ML20113G596
| ML20113G596 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 12/20/1988 |
| From: | Gregory Stone GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20092F288 | List:
|
| References | |
| CON-IIT05-020D-90, CON-IIT05-193-000F-90, CON-IIT5-193-F-90, CON-IIT5-20D-90, RTR-NUREG-1410 NL-LP-11203-02, NL-LP-11203-2, NUDOCS 9202210490 | |
| Download: ML20113G596 (59) | |
Text
I Georgia Power
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VOGTLE ELECTRIC GEt4ERATING PLANT g,
TRAINING LESSON PLAN TITLE:
EMERGENCY D!ESEL GENERATOR AUXILIARIES NUMBER:
NL-LP-It203-02-C PROGRAM:
QUTSIDE AREA 0FERATOR REVISION: 2
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AUTHOR:
s.D. STONE DATE:
12/19/90 APPROVED:
du-DATE:
j2_ go.gp IfGTRUCTOR GUIIELitES:
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1.
LESSON FORMAT A.
Lecture with visual aids II.
MATERIALS A.
Lesson Plan B.
Slides and Slide Projector C.
Transparencias and Overhead Projector D.
Student Handouts E.
Dry Erass Board anc Markers III.
REMARKS Perforaance-based instructional units (IUs) are attached to the leston plan as student handouts.
After the lecture instruction
- should be provided for the attached instructional units.
The instructor should be available to answer questions that may arise concerning tne IU material.
After instruction on the 10, the student will perf orm, simulate,. observe or discuer. (as identified on t'n's cluster sigr.off criteria list) the task cove, red in the tratructional unit in the presence of an evaluator, prm%ir NASTR CDPY e
NL-LP-11203-02-C l.
PURPOSE STATEMENT:
UPON COMPLETION OF THIS LESSON, THE STUDENT WILL HAVE AN UNDERSTANDING OF THE
[,c FUNCTIONS AND CPERATICNS OF THE FOLLOWING EMERGENCY DIESEL ENGINE AUXILIARY
/
SYSTEMS AIR START, Lube DIL,-JACKET WATER COOLING, COMBUSTION AIR SUPPLY AND EXHAUST, AND CRANKCASE VENT!LATION II.
LIST OF OBJECTIVES:
1.
List the functions of the Air Start System.
2.
Make a drawing of one train of the air start system, including the following components as a minimum, and stating the function of eacht a.
Compressor b.
Aftercooler c.
Air dryer d.
Air receiver e.
Barring device supply f.
Air supply to engine control panel
- g. : Air start solenoid valves (admission valves) h.
Air start distributor 1.
Air sucoly manifolds (on engine)
J.
Air start valves-(at cylinder heads) 3.
Explain the theoretical principle behind the operation of the air dryers.-
4.
List the power supplies for thes a.
Air compressors b.
Air dryers c.
Air start solenoid valves 5.
State the start /stop permissives of the air compressor and aftercecler fans.
.6.
List the diesel engine permissives associated with the Starting Air System,. to include how depletion of the Air Start System is
-prevent &d during multiple start sequences.
7.
List the locations in the diesel building where Starting Air System pressures can be read.
2
NL-LP-it203-02-C 11.
LIST OF OBJECTIVES B.
Describe the rresponse of the Starting Air System on receipt nf a OG start signal (eeergency or normal).
9.
List t!)e points of the Starting Air System which can be " blown donn" to check for or reanve moisture.
10.
State the condition indicated by a hot starting air pipe tri e cylinder.
11.
Statu the pump supplying lube oil when the caergenct diesel engine ist a.
Running b.
In sL:ndby 12.
State the functions of the Diesal Lubs 011 System, including major engine components which are lubricated.
13.
Draw a sketch of the lube oil keep ware circuit, including as a minimum the following components:
a.
Keep uare heater c.
Keep warm suction isolation valve d.
Keep warm pump e.
Keep ware filter-f.
Keep warm strainer 14.
Draw a sketch of the engine lube oil pump circuit, including as a minimum the following components:
a.
Pump suction foot valve 6.-
Engine L.O. pump c.
L.O. cooler
- d. -Duplex oil filter s.
Luke oil strainers-f.
Pressure regulators 15.
State the type and power supplies for the following Idbo oil' components
-a.
Main oil pump b.
Keep warm circulating oil pump c.
Lube oil keep warm heater 16.
For the lube.cil cooler, states a.
How cooled b.
Type of liquid on tube side c.
Type of liquid on chell side 3
NL-LP-11803-03-C
- li.
LIST OF OBJECTIVES 17.
For the lube oil sump, statet a.
Noaiber of tanks b.
Canacity 18.
List-the start /stop permissives of the tube' oil keep warm pump.
19.
State how lube oil temperature is controlled when'the diesel generator is in standby, and when running.
20.
List the diesel generator trips associated with the Lube Oil System, includin0 the setpoints.
21.
List the various methods by which lube oil sump level can be measured.
22.
List the pressure (and delta P) instruments f or the Diesel Lube 011 System which can be read in the diesel generator building.
State what possikle problems an abnormal (Hl/ LOW) reading indicates.
23.
State the reason that the turbochargers are prelubricated before
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a planned segine run.
24.
State how and where lube oil is added.
25.
State how the diesel engine would respond tos a.
Failure of engine-driven sain oil pump b.
Inoperabls lube oil keep warm pump
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c.
Inoperable lube oil keep ware heater 26.
State the function of the crankcase ventilation' aystem.
27.
State the causes and ef fects of high crankcase pressure.
28.
Give the start /stop permissives of the crankcase f an.
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29.
State the diesel generator trip associated'with the crankcase ventilation system.
30.
State which-type of instrument is on the engine control panel f or the-crankcase ventilation system, and how it-is correctly read.
31.
State the f unctions of the Jacket Water Cooling System.
N 4
4
NL-LP-11203-03-C ll; LIST OF dBJECTIVES 32.
Make a drawing of the flow paths of the Jacket cooling water, including as'a minimum the following major components, and stating _the function of eacht a.
Jacket water-pump d.
Jacket water cooler c.
Thermostatic control valve d.
Jacket water standpipe e.
Lube oil cooler f.
Jacket water keep ware pump g.
Jacket water kaap'wara heater
- 33. - List the power supplies for the following a.
Jacket water keep warm pump b.
Jacket water keep warm heater 34.
List-the start /stop permissives for the Jacket water keep warm pump and heater.
35.
List the diesel generator trips associated with the Jacket Water System.-
36.
List the temperature, pressure, and level instrumentation of the Jacket Water System.which can be read in the diesel generator room.
State what an abnormal (HI/ LOW) reading indicates.
37.
Describe how Jacket water temperature is maintained during standby and during diesel misgine running operations.
30.
Describe the purpose for which the following systems interface with the emergency-diesel generator systees a.- Dominerallred water b.
NSCW 39.
State.the functions of the combustion air supply and exhaust systems.
s 40.
State the principle of operation of a turbocharger.
- 41. - Make a simple drawing of the combustion air supply and exhaust
.systee,_ including an a minimums-4 Cycoil air intake filter b.
oAir~ intake silencers c.
Turbochargers (air supply blades) d.
Combustion air coolers e.
Combustion air supply dampers f.
Air intake manifolds 0
Exhaust outlet manifolds h.
-Turbochargers (exhaust blaces) 1.
Exhaust muffler i
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N NL-LP-11203-03-C:
-11; LIST OF OBJECTIVES
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- 42. ' State'tha response df the combustion air supply dampers to a 1
diesel engine trip.
4 3.-
Stats the maximum cylinder tomperature and the reason for that limit.
4 44.
State the consequence's of water in the intake manifolds, and how
-it can be detected.
45.
State the principles of operation of the cycoil air intake filter,
.and indicate. the importance of proper filter oll level.
c e
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b 1
nL-LP-112ua-vi w
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REFER 8NCNS:
1.
Plant Vogtle Proceduress 13145 Diesel Generator" (Rey 8) 13146
" Diesel Gen 6 eater Fuel 011 Iransfer System" (Rev 1) 14980
" Diesel Generator Operability Test" 13427 "4160 VAC IE Electrical Distributien System",
- 17035, Annunciator Response Procedu,res (Rev 3)
- 17038, Annunciator Response Procedures (Rev 3) 2.
Technical Specificationst 3.0.1 Electrical Power Systems. AC sources 3.
" Emergency Diesel Generator" Vogtle Training Text Chapter 16C 4.
Plant Manual Chapter 23 (Rev 0) 5.
Pk1Ds, Logics and Other Drawings Piping and Instrument Diagrams IX4DB170-1 (Rev 21) 1X4DB170-2 (Rev 21)
Vendor Drawings AX4AK01-27 (Lube 011)
AX4AK01-26 (Jacket Water)
AX4AK01-29 (Starting Air)
AX4AK01-29 (Fuel 011)
Control Logic Diagrams:
1X5DN107-1 (DG Fuel 011 System) (Rev 6) 1X5DN107-2 (DG Unit Engine) (Rev 3) 1X5DN107-3 (Generator) (Rev 2)
Elementary Diagrams 1X3D-BH-G03C (Rev 2) 1X3D-BH-603D (Rev 1) 1X3D-BH-603E (Rev 2) s IX3D-BH-603F (Rev 2) 1X3D-BH-6036 (Rev-1) 1X3D-BH-603H (Rev 3) 1X3D-BH-603I (Rev 2) 1X3D-BH-603J (Rev 3) i One Line Diagrams 1X3D-AA-A01A (Rev 12) 1X3D-AA-K01A (Rev 7) l 7
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NL-LP-11203-02-C
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REFER'nWCBS r 6.
Vendor-Manuals-Ax4AK01-509 (Rev 0)
AX4AK01-510- (Rev 2)
AX4AK01-563 (Rev 6) 7.
FSAR:
G.3, 9.5.4,-9.5.5, 9.5.6, 9.,5.7, 9.5.8 O.
DAP Commitments:
SOER 83.006 " Unavailability of emergency power causwd by diesel and breaker unavailability" SDER 83.001 " Diesel generator f a!!ures" SER 84.042
" System interdependency overnights results in 'ess of redundant safeguards functions" IEN 85.028 "Pertial loss of AC power and diese! generator degradation" IEN 84.069
" Operation of-emergency diesel generators" ONR 297
" Grid high voltage and undervoltage, trip relays -
contribute to EDG output breaker lockout" NUREG 1216.000 "Saf ety' evaluation report-related to operability and reliability of emergency. diesel generators manuf actured by Transamerica DeLaval Inc." (Not an OAP action itse, but a training commitment)
- 9. -INSTRUCTIONAL UNITS:
NL-10-11203-C-001 Respond to Emergency Diesel Generator Lube 011 System Alarms NL-1U-11203-C-002 Respond to Emergency Diesel Generator Jacket Water Systee_ Alarms 10.
TRANSPARENCIES:-
NL-TP-11203-C-001 Starting Al'r System
'NL-TP-11203-C-002 Starting Air System, One-Circuit-NL-TP-11203-C-003-Air Compressor, Cutaway Front View
-NL-TP-11203-C-004 Air Compressor, Cutaway: Side View-
.NL-TP-11203-C-005 Air Dryer, Basic Flow Paths NL-TP-11203-C-006 'A' Train DSL GEN Air Start Eplenoid Valves.
NL-TP-11203-C-007 Starting Air Valve NL-TP-11203-C-006 Air. Start Di stributor Layout NL-TP-11203-C-009 Diese! Alarms Assoc. with Starting Air-NL-TP-11203-C-010 Lube 011 Keepware Syst. Basic Flowpath
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NL-TP-11203-C-011 Engine-Driven L.D. Syst. Basic Flowpath-NL-TP-11203-C-012 Outline of Aux Skid Base _.
NL-TP-11203-C-013 Alarms Associated with Lube Oil System:
NL-TP-11203-C-014 Major Flowpaths, Jacket Water Syst.-
NL-TP-11203-C-015 AlarmsiAssociated with Jacket Wtr. Cooling-Syst.-
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NL-LP-11203-02-C REFEREWCNS:
11.
Student Handouts NL-HO-11203-C-001 Emergency Diesel Generator Auxiliaries 12.
Other DCP BO.049 Jacket Water N
- e w
d e
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i 111. LESSON OUTLINE:
NOTES 1.
INTRODUCTION This lesson describes the operation of the engine-related auxiliary systems of the diesel generator.
Auxiliary systems to be presented include
' Air Start System Lube 011 System Crankcase Ventilation Jacket Water Cooling System-Combustion Air Supply and Exhaust System The fuel oil system, which includes fuel oil transfer, is covered separately as one control of the engine and generator PRESENTATION A.
Air Start Systea 1.
Purpose Have students refer to 1X4DB170-1, Provide means for quick starting of the diesel Rev 21 upon receipt of a start signal, by injecting high pressure air into the cylinders 2.
Functions Objective 1 a.
Starting Air Supply - 2 circuits b.
Supply engine pneumatic control air NL-TP-11203-C-001 (60 psi) to operate logic for engine protective circuits c.
Air for barring device d.
Air for rolling engine e
e.
Air for governor booster servomotor Governor oil pressure low 3.
Components and Flowpaths initially NL-TP-11203-C-002 a.
Compressors (2 per engine)
Students must be aole to draw 1)
Two stage, reciprocating,-three cylinder, with intercooler between low and high pressure stages, Lubricated by constant-tumo splash NL-TP-11203-C-003 system. Compressors are air-cooled, and intercooler is forced-air cooled by shaft mounted fan NL-TP-11203-C-004
[
76 scfm, 250 ostg to t
NL-LP-li203-02-C
] Ill.
LESSON OUTLINE:
NOTES 2) 400V Electric motor and belt drive INBI (Train A), INB0 (Train B)
Objective 4a 3)- Functions Provide a method of re-Objective 2a filling the starting air receiver, and sized to refill its receiver from minimum cranking pressure to 250 psig within 30 minutes b.
Aftercooler (2 per engine) 1)
Air-to-air heat exchanger 2) 400V electric motor drives fanblade 3)
Functi on: Removes heat of compression Objective Ib from high-pressure air being discharged from the compressor c.
Air dryer (2 per engine)
NL-TP-11203-C-005
- 1) Mechanical, refrigeration, 200 scfm, powered from 120V/240V DIST PN INYIt (Tr. A) INYO1 (Tr. B)
Objective 4b Similar to house air conditioner
- 2) Runs continuously, independent of air compressor 3)
Function Remove moisture from Objective 2c compressed air discharged from compressor d.
Air receivers (2) 1)- Vertical, cylindrical, rated for 273 psig
- 2) Function: Allow at least five Objective 2d starting attempts consecutively
~~
without compressor assistance s
- 3) On normal starts, each attempt is five seconds maximum 4)
On emergency starts,_ starting air-is supplied until-engine runs, or (150 prig in receivers 5)
Engine can still be started down to about 90 psig (normal start) 11
NL-LP-11203-02-C 111. LESSON OUTLit'E:
NOTES e.
Barring device suoply 1)
Pneumatic device, used to turn the engine by engaging into flywheel holes and extending
- 2) Function of air supply:
To cause the Ob)ective2e shaf t of the barring device to move, in response to the positioning of a 3-way air control valve
- 3) Air supply is filtered, supplied from only one receiver, and normally isol ated f.
Air supply to engine control panel (control air) 1)
Supplied from both receivers through a shuttle valva
- 2) Air pressure supplied-at 250 psig, regulated to 60 psig 3)
Function of control air supplyt Objective 2f Provides medium to operate the engine's pneumatic control system g.
Air start _ solenoid valves (admission valves) 1)
Four per engine. two per bank, NL-TP-11203-7,-006 each bank having an 'A' control power and 'B' control power solenoid
- 2) When open, supply air to the air stert manifold
- 3) Function Open on an engine start or Objzetive 2g engine roll sAgnal to provide starting w
air to the air manifold for each bank, and close, when required, to conserve air pressure h.
Air start valves Objectivo 2J 11 16 total, one per cylinder 1
- 2) Open from piloting air (from air NL-TP-11203-C-007 distributors) 12
IA-LPall403 VA-C
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11!.
LESSON OUTLINET NOTES [
3)
S& ring pressure (plus firing pressurv) to close
- 4) Functione Open to supply startine air to cylinders, f rom tne two startihg air supply etnifolds 3
1.
Air start distributors (2)
Objective 2h D One per bank, camshaft-driven NL-TP-It203-C-0C0
- 2) Lubricated by " oil spitter" 3)
Air supplied tg distributor from starting air manifotos (one par bank) when mantfold is pressurited 4)
Air distributed itg3 distributors f or piloting open ths' starting air valves for each cylinder in the currect sequence j,
Air start supply manifold
- 1) One per sngine bank
- 2) Located at enginn hieds, to <*ent of injector pumps 3)
Function Distribute s' < t
- eo -
Ob. tecti ve 21 to the air start valve (c' race
, ik cylinder, and to the air t' -a,
distributor f or that bank, ien the air start admission valve is open 4)
If.s cylinder's air start valve sticks Objective 10 open, air start manifold gets very hot paint burning off and piping may turn red.
If f eeling manifold to check f or stuck-epen air start valve do not grasp with hand 44 Instrumentation, controls and permissives a.
Air compressors
- 1) Auto start at 225 psig, decreasing Ob.iective 5 receivar pressure 2)
Auto stop at 250 psig, increasing receiver pressure 13
____-__-_-__-_-_-----:-----_--------------------------------------------~~~
ni.-LP-il203-02-C Ill.
LESS_ON OUTLINE:
NOTES i
3)
Trip on low oil level in crank swo 4)
Not powered in situation while INBl (or (NDO) are de-energized b.- Aftercooler fans 1)
Auto start and stop when compr'essor
{
starts and stops 27 Not powered in Si situation while INBI (or INBO) de-enrr gi z ed c.
Air dryers 1)
Run continuously 2)
Crankcase heater must be energized at least 24 houts prior to anticipated start, so refrigerant will not condenne in crankcase 3)
Not powered during SI situation iehile INBI! (or INB05-) are de-energized r
d.
Receivers 1)
Pressure indicato on each recetver e.
Air start selsacid valves
- 1) Normal start signale All four open Objective 8, 6 until engine reaches 200 rps ("enginc running" signal) but not f or more than.
5 seconds 2)
Emergency start signals All four open Objective 8, 6 until engine reaches 200 rpm, but if no start occurred, will continue to supply sir until air pressure is
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150 peig.
Operator must d*.'termine reason f or f ailure to start, and correct it
- 3) Can supply air again, below 150 ps',g, I
using normal starting
- 4) With loss of
- A" rentrol power at engthe cottrol panel, both engine banks still get supply of starting air.
Some with loss of "B" power 14
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.s
.m @C i
111. LESSON OUTLINE
- l
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NOTES f.
Pressure instruments and alarms i
- 1) Rsceiver pressure, wach receiver, Objective 7 i
gauge at the receiver
- 2) Starting air pressure - left bank s
(eng. control panel) 3)
Starting air pressure - right bank (eng. control panel)
- 4) Control air pressure (engine control Directly related panel) 5)
DG " LOW PRESS CON 1ROL AIR" NL-1P-11203+C-009 annunciator, 55 psig c'ecr.
L
either hsacer pressure less ther, 215 psig 7)
DG "HIGH PRESS STARilNG AIR" annunciator, aither header 260 psi ce greater l'
8)
DG " FAILED TO START" annunctstor, engine did not reach 200 rpm within 5 seconds of start signal 9)
DG "$MITCH NOT IN AUT0" annunciator air compressor or aftercooler switch Plus several other not in AUTO DG switches 5.
Operations a.
Checks made on rounds 1)
Control and starting air Uhnk pressur e
- control air, 62 psig
- starting air, 225 - 250 psip 2)
Air compressor general inspection 31 Air compressor power on
- 4) Air teceivers and dryers - blowdown Note - May require nntti meisturn f ree indiv. verification from Proc. 11092-1, Rev i b.
DG Oper40111ty test 15
f NL-LP 1!203-02-U lli.
EESSON OUTl.lNE:
NOTES 1) 31 day test, can be more often Also a 104-day test 2)
Depending on what month it is, an air receiver is isolated for test start oi Certain 9pnths, DG, then rhoaened neither haolated t
3)
During the new DG rua (or afterwards),
Proc. 14)S0-1 each compressor is checked for auto-starting, and checked for amount of, time required to recover from 150 to 250 psig.
Must be 1/2 hour or less c.
Air dryers - principle cf operation
- 1) Holst, compressed air, saturated with water vapor, enters dryer i
- 2) Precooled by outgoing refrigerated air 3)
Further cooled at air-to-refrigerant Objective 3 heat exchanger.
Veror.in the cooled Principle of opera-air condensing to water droplets tr/
tion Chilling to chilling condense roisture for removal 4)
At separator, water dioplets separate to a drain trap
- 5) Cooled dry air travels to air-to-air heat exchanger where it takes heat free incoming air d.
Blowing down to remove moisture frdividual verffi-1)
Places ggptit.Lgt cetion possibly required.
See Receiver deatns PLID-170-1 After coolwr drain traps.
Objective 9 Dryer blowdown 2 Capped drain valvas Capped strainer drain e.
Abnoreal conditions 1)
" Hot" starting air manif old af ter Objective 10 start a)
Indicates stuck or leaking air start valve f or one or more cy!!nders b)
Can get bot enough to burn paint from ptoe 16
rn se-s ssJs ss L
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LESSON OUTLINE-NOTES
- 2) Loss of contr01 air (previously discussed) a)
Engine can not be shut down using normal methods if already running
- 3) Low air pressure a)
If there is no supply of air from at least one receiver, at 210 psig or greater, the dieral generator is " inoperable" b) Must have the Er_tM9I.1 and the path must not be isolated B.
Lube 011 System 1.
Purposes a.
Provide att for lubricating and cooling of engine and turbocnarger bearings and other components during engine operation n.
Provide oil for prelubricating and warming of engine bearings and other components when engine is in standby 2.
Functions a.
Engine running
.t ) Lubricate Prevent metal-to-metal contact of bearings, gears, and turbocharger Objective 12 bearings, by tube oil pumped from a NOTE: Explain that reservoir to the components some components, generator's such as 21 Cool the bearing, and m
Woodward governor-Recove heat, and transf er it to the actuator, have their Jacket water system when the engine own oil systems, not is operating associated with the engine's lube oil systee
} '-
- 3). Clean Reeove contaminants from engine oil I
b.
Engine in standby l
4 17
)
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NL-LP-442VJ-Vo-u
[lli.
LESSO_N OUTLINE:
' NOTES 1)
Prelubricate The main tube header is pressurized Objective 12 somewhat by an electric motor-driven pump.
Eiearings are prelubricated.
Turbocharger bearings are not pre-lubricated while in blandby, byt a
" drip" flow is supplied.
( (.35 Cal /hr)
NO rocker tube is provided while in standby. Possibility of-hydraulic lock of a cylinder if oil leaked inside it 2)
Wars The oli is warmed by an electric immersion heater Prevents extreme viscosities on start, and allows quich starts 3)
Clean keep-warm oil system has a filter and strainer 3.
Components and Flowpaths NL-TP-ti203-C-010 Students must be a.
Keep-warm circuit flowpath able to sketch for Objective 13 1) 1.uts oil sump tanks
- 2 interconnected reservoirs -
2)
Keep-wara heater
~ electric immersion heater heats lube oil.
1hermostatically controlled
- Powered f rom MCC INBC (!NB1 f or B Objectiva 15c Train) 3)
Kopp-ware suction isolation valve 4)
Keep-warm pump l
- runs when engir.e is in standby l
- stops when engine starts
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10 l
NL-LP-il203-02-C 111. LESSON OL.ULINE:
NOTEi
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~ supplies tube oil for prelubrication when engine is in standby Objective 11a
- Powered from 400V MCC INB0/lNBl Objective 15b
- 5) Keep-warm filter (ens / engine)
- 6) Keep-warm strainer (one/ engine)
NL-1P-il203-C-Oli b.
Flowpath when engine is running Objective 14 Students sketch 1)
Sump tank main 810wpath
- 2 interconnected 350 gal tanks /
Objective 17a, b engines 2)
Pump suction foot valve
- Buction pressurized 5y keep-warm system when in standby
- 70 psig relief, protects suction piping between pump and foot valve during engine " rock back", or reversing, just when engine comes to stop 3)
EnginedJriven main tube oil pump
- 500 gpm
- positive displacement, rotary gear
- driven by engine gearset Objective 15a
- 4) Pressure regulators
- 2 in paralle!
- regulate oil pressure to 55 psig
- sensing line from main oil header
- regulators receive part 'of pump discharge, divert it to sump to saintain pressure (on main header)
NL-TP-11203-C-012
- 5) Lubs oil cooler (1 per engine)
- lube cil on shell sico, 500 gpo Objective t6e being cooled
- Jacket water on tube side, as Objective 16b cooling medium d
e 19
../
l NL-LP-11803-02-C
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Ill.
LESSON OUTLINE:
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NOTES
- lube oil cooled by Jacket water at Objective 16a lubs oil cooler.
The Jacket water is in turn cooled by N$CW at the Jacket water cooler e
6)
Duplex oil filter (one filter of the duplex.'
i
- full-flow, duplex, cartriage type
- 500 gpm rating, 150 psig, 200"F rating 10 micron particle retention
- can be swapped to standby filter of duplan with engins running
- continuous vent to tube ' oil suse
- 7) Lube oli strainer (one of a pair)
- basket-type, stainless steel screen, 80 alcron particle retention
- helps prevent passing of particles should a filter cartridge deteriorate 4.
Instrumentation, Controls, Permissives n.
Lube oil knip-warm pump
- 1) Auto starts when engine is stopped Objective 10 (part)
- 2) Auto stops when engine is started.
Not powered in 81 situation wntie INBI tor INBO) are de-energized 1--
3)
Presuure indicator at engine front 4
gauge penel normally reads discharge pressure. Can be alsened to show suction pressure b.
Keep-nnre heater 0
1)
Thermostat set f or 150 F
- 1) Henter de-energized when keep-warm Objective 10 (part) pump stops. energizes by thermostat if keep-warm pump is running 29
e NL-LP-112t'3-02-C 111. LESSON _6(JTLiNE:
NOTES 3)
NO low sump tank level cutout f or heater c.
Lube oil keep-warm filter 1)
Diff press gauge at engine front gauge paret 4
d.
Lube oil keep-warm strainers 1)
Diff press gaugt at engine front gauge panel c.
Turbocharger drip sightglasses 1)
Should show very small steady oil stream, or drips, while in standby f.
Engirie driven tube oil pressure gauge 1)
At engine frorit gauge panel 2)
Possible to realign it to show suction pressure g.
Lube oil coolur 1)
Jacket wrter temperatures'to and from tube oil cooler 2 (local, at cooler)
?)
Lube oil teinperature to and from tube oil cooler (local, at cooler) h.
Lube oil filter (duplex main) 1)
"HI DIFF FRESS LUBE OIL FILTER" alarm UL-TP 11203-C-013 (20 PSI) c 2)
Diff pressure gauge on enginw control panet 3)
Diff pressure gauge at engine front gauge panol 4)
Pointer on linked 3-way valves indicates which filter of the duplex is in service 1.
Lube oil ttrainers (main) 1)
Diff pressure gauge on engine front gauge panal 21
. ~
.. ~
. _. -. +.
NL-LPall2O3-02-C Ill.
LESSON OUTLINE:
NOTES J.
- 1) 011 pressure indicating youges on engine control panel.
Dual needle
- red (r ight), - black (lef t) 2)
"DG LOW PRESS TURBO O!L - LEFT."
20 psig 3)
"DG LOW PRESS TURBO O!L - RIGHT" 20 psig 4)
"DG TRIP LOW PRESS TURBO OlL" Trips engine at 15 psig turbocharger oil pressure (except after emergency start) h.
011 temperature alarme and engine trips 1)
LOW TEMP LUBE O!L ~ lb (140 F) 0
- 2) LOW TEMP LUBE DIL - UU7 (140 F)
U
- 3) Hi TEMP LUBE OIL - IN (175 F) a) HI TEMP LUBE DIL - OUT (190"F)
- 5) DG TRIP HIGH TEMP LUBT Dil (200 F) 1.
Sunip tank level
!)
" LOW LEVEL LUBE OIL" alare (26" above tank bottem)
DEA 8 ano PDG 2/PDG 4 Objective 21 2)
" PUSH TO READ" level indicator Not particularly
" Bubbler" type, unir.g supply of arcurate control air, and reading 1*ts back-pressure Located on engine control panel (PDG 2, PDG 4) 3)
Dipstick (Sarkings shown)
- MIN STATIC
- NAX STATIC-
- MAX DPERATE i
1 22
NL-LP-11203 02-C 111. LESSON OUTLINE:
-}40TES
_ _ =
Dipstick located at top of right-hand tank (tank nearest the tube oil duplex (right-hand, as filters) facing the engine from the flywheel end) 5.
Operations (Lube 011)
~
a.
011 temperature control 1)
In standby, temperature is contreile' d Objective 19 by thermostat setting of keep
- warm heater
- 2) When engine is running, temperature JW - Jacket water controlled by Jacket water temperature which is, in turn, controlled by JW temperature control valve Some have already b.
DG Trips been mentioned.
Listed tegnther 1) 2/3 low lobe oil crossure on main lobe here.
oil header, 30 psig Objective 20 Trips DG regar dless of how stat ted
" LOW Oil PRESS SENSOR MALFUNCl!DN" alarm if 1/3 sensors have mal f unctioned. A second sensor mal-function can cause trip 2)
" TRIP, HIGH TEMP LUBE O!L" (200"F) 3)
"1 RIP, LOW PRESS YORDO OIL" (15 psig)
Al "TR!g,)HIGHTEMFENGINEBEARING" (229 F
- 4A related trip
- Af ter a low prusure turbo oil trip, or high temperature trige the engine is prevented fro.s normal rentart for 90 seconds.
Engine will still emergency start
- The high engine bearing trip can not be reset until maintenance personnel The fusible replace some f usible metal rods mwlt at 220' rods F
which are part of the detection systee of the main bearings.
The DG will still emergency. start-
- Af ter low lube oli pressure trip, EMERGENCY TRIP RESET pushbutton must be pressed to allow a restart attempt 23
~...
NL-LP-11203-02-C lil.
LESSON OUTLINE:
NOTES c.
Checks made on rounds f or lube oil system From Proc !!B02-1
!) Lube oil temo - IN pas. 19 on thermocouple readout. 140 - 165 F Note Froc 13145-1 (temperature to engine) calga(on142-170,F
- 2) Lubeoiltemp-OUTpos. goon,thermo-couple readout, 140 - 165 F (temperature from engine)*
3)
DG lube oil sump level high or low
- 4) Luhe oil keep-warm pump pressure 30 to 50 pst 5)
Lube ott keep-warm strainer 0 - 20 paid 6)
Lube ott keep-warm filter 0 - 20 psid d.
Adding oil to sump Objective 24 1)
Added to sumo in accordance with procedure 13145-1 2)
Can be added while running or shut-down 3)
Level should increase 1" for each 55 gal.
4)
Added to dipstick connection o.: top of sump
- 5) Using electric or hand-driven pump
- e. -Prelubricating turbocharger NL-TP-11203-C-014 g
il Turbocharger prelubricated prior to planned run 2)
One to two minutes before engine start, turbecharger orifice bypass valve is opened. providing flow of tube oil to turbocharger bearings 3)
Bypasses the drip orifices 41 Bypass valve closed shortly af ter engins start 24 i
e i
NL*LPal1803-03-C lil. LESSON OUTLINE:
]
NOTES l.
5)
Drip lubrication lubricates turbo Objective 23 bearings using oil cupplied b'r the keep-warm circuit, at a rate low enough not to leak past seals into thrust bear ing has the turbine section high delt2 P across it,trdtlally at Drip bypass supolies pressurized Ivbe start oil froin the keep-warm circuit'tc p.MgfJtp1 drip lubrication to the turbocharger bearings for planned start by providing tube oil at a higher rate
- 6) N aber of non-prelubricated starts are tracked f.
Abnormal oporattons 11-Failure ef engine-driver main oil pump Objective 25a Rege FSAR 9.5.7
- Engine trips on low lobe oil table 9.5.7-2 presgureorhighbearingtemperature (220 F)
- Engins incoerable 2)
Failure of cooling system - how lube oil is affected
- Engine temperatures rise, and rate of rise depends on load
- Engine will trip, on a iecket water trip, or possibly tube oil temperature high 7
3)
Inoperable keep-warm pump Objective 25b
- detected by low lube oil temperature alares
- DG declared snoperable, and
_ F r em !?035-1, MAINTENANCE t100E selected until pump 13145 can be restoreo 4)
Inoperable tube on! keep-warm heater Ohjsetive 25c
- If gube oil temperature drops below 120 F, the.DG ia etarged to maintain temperature above 120 F
- 5
st-LP-11203-02-C lli.
LESSON _05ILINE:
~
NOTES 5)
Tube leaks in tube oil heat exchanger
- Engine L.D. pressure higher than Jacket water pressure
- Fossibly discovered by increasing o
JW stardotpe level, along with decreasing tube oil sump level
- 6) From tube oil pressure un ED21ag Objective 22 control canal ag_VER (e9qtne running)
- Arprox. 55 osig normall Lgn pressure E
alarm at 40 psig
- Lube oil filter clogged
- Lube oil strainer clogggd y-
- Lube oil pressure regulator is failed open
,L
[
- Engine driven pump malfunction I
- Low lube oil level in su.tp
- H!gh oil temperature
- 7) Low turbochsrger oil pressure on dual Objective 22 gauge at engine control panel (lef t or right) Lgn pressures L
- Lube ull filter clogged
- Lube oil strainer clogged
- Lube oil pressure regulators fall open
- Engine-driven tube oil pumo mal-function
- Low lebe oil sump level
- Turbocharger arelube valve open
- High oil temperatures B)
High dif f erential pressure on the Objective 22 lubs oil filter diff nressure gauge, 1X4DD110-1
(.
engine control canel a
2b
- - - - - - - - - - - - - - - - - - ~ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
.... 02-C 111. LESSON OUTLINE:
NOTES r
- in service tube filter clogged Alarms at 20 psid
- 9) PDI at engine front gauge panel tube Objective 22 oil filtsr dift pressure high reading in service tube filter clogged Bame as nbnva
~
- 10) Hi dif f erential pressure acros's lube Objectfve 22 oil kaap-warm strainer or filter (keep-warm pump running)
- clogged filter or strainer
- 11) High differential pressure across tube Objective 22 strainer One in service, one in standby In-service strainer clogged
- 12) Pump discharge pressure main oil pump Objective 22
- Some general causes as low header pressure (6) above
- 13) Keep-warm pump discharge prssoure Objective 22 IX4DD170-1 Lows possible pump failure, or hot oil Hight strainer or filter blocking C.
Crankcase Ventilation System 1.
Purpose Removes f umes and vapors from the crankcase 2.
Functions Objective 26 a.
Remove vapors and f umes with 2 electrically
~
driven fans 1
b.
Maintain negative crankcase pressure to reduce 011 seepage c.
Relteve gases in event of a crankcase explosion 3.
Components and flowpaths 1
NL-LP-li203-03-C lil.
LESSON OUTLINE:
NOTES a.
Two motor driven blowers pulling air and vapors from the cronkcase, when the engine is running to expel vapors s
1)
Electrical supply 120 VAC distribution panels (INYIl and INYD2) 4 supplied f rom 480V MCC INBl (and INBO) panels b.
Blowers discharge through an oil separator c.
Separated oli returns to crankcase d.
Crankcase air and fumes discharge to outside the DG Dullding e.
Relief doors
- 1) Relieve gases and prassure should a 1
crankcase explosion occur'inside the engins Il Reiteves to DG room 3)
Relief doors have flame traps to help On left side of keep flames from escaping the engine engine only, relieve towards wall, rather 4)
Relief doors open et about i 1/2 psig than towards NCC's anJ reclose quickly to prevent entry control panels, or of fresh oxygen to the engine crank-personnel paths case 1
5)
If not for the relief doors, the engine side covers might blow af f in a crankcase explosion, spreading fire 4
Instrumentation, Controls and PermLssives
- a.. Manometer on engtre control panel 1)
Right side of manometer U-tube Objective 30 connected to engine vacuum
- 2). Read the top of the right and lef t columns.
Difference in inches is the reading i
b.
Alarm on Annunciator Panel 1)
"DG TRIP H! CRphkCASE PRESS" i
28 0
us-te-o sva-o..u llis LESSON OUTLINE:
NOTES al 3 psig crankcase pressure Objective 29 b) DG can be restarted in 90 seconds (normal start) a c)
DG can be emergency started immediately
Do not run when INDI (or INDO) are not powered 3)
Increasing crankcase pressure, causes/
effects 5,
Operations Causes of off-normal manometur readings, Objective 2*/
s.
and effects on manometer or enerations
- 1) Normal readings, ngine running, CC Actual loaded and fans on unloadtd monometers vary from engine to 3
- unloaded slight negatis iout engine
-2.0 to -2.5" H2O
- leadede less negativu, about -1.5" Ref Test togs in to 2.0a H2O due to more blowby AX4AK01-509, Sect. 8
- long term decrease in crankcase vacuum Ring and cylinder wear of engine increased inleakage of air from leaks of air into tne crankcase
- 2) Engine running CC fans off s
- Blight positive pressure, approx.
+ 1/2" to +1"
- Effects: possible leakage of oil from engine covers, if not snug
- Loose valve covers or side covers cruse vacuum to be lower than noreal 1
i e
1 29 l
f!L-LP-11303-03*C 111,. LESSON OU_TLINE?
i NOTES 3)
Crankcase explosion Cause crankcase relief doors to open, relieving prsssure, at approx. I 1/2 psig Cause of crankcase explosions. Hot' spot, uuch as a hot bearing or other internal components igniting vaport Engine trips at 3 psig crankcase pressure If the engine had tripped due to the high crankcase pressure sensor', and you are not sure if it was real or spurious, if the liquid was blown out of the manometer, it was real D.
Jacket Water Cooling System t.
Purpose The Jacket water system provides enough -
a.
engine cooling to allow continuous engine opkrational maximum load b.
When the engine is shutdown, the Jacket watar system provides engine warming to promete engine startieg 2.
Functions a.
Engine runnlig, orovides cooling water fort Fujective 31 NL-1P-11203-C-018 1)- Lube oil, at tube oil cooler a
- 2) Coahustion air, at 2 combustion air coot ers
_4 3)
Governor oil, at governor cooler 4)
Turbochargers (2) 5)
Exhaust Jackets 6)
Engine, through internal passages 7)
Standptpe supports b.
Engine in r.tandby. provides heating of the i
above l
t 30 i
T h-y
' ' -yw wy-vy'n-r vs rw i-y-
=,imerer a e -umsv gC 9
u,-t*?-
-p a
-e--
ae 4 g
-FC'-
--+--p utv ei--+mP4 e4-
1 NL-LP-11203-02-C 111. LESSON OUTLINE:
NOTES 3.
Components and flowpaths NL-TP-il203-C-014 a.
Jacket water pump Students to be able to draw f or Objec-1)
Single stage, centrifugal tive 32 shd give functions 2)
Driven by engine, through gearset 3) 1800 gal / min, 117 ft head, 1470 rpm
- 4) Function to circulate water through Objective 32a the coolant loop of the diesel generator during Deriods of engine operation to remove heat from the engine b.
Thermostatic valve Objective 32c
!) Function: Provi6e capability to bypass ths Jacket water around the Jacket cater cooler, for temperature control
- 2) Full bypass at 152 F cr less
- 3) Full flow e.t 170 F for greater 4)
Inlet of valve receives 750 gpa of Travel stop attach-JW pump ed to TCV 19096 to limit travel to con-c.
Jacket water cooler trol man flow 11 Function Provides a means of Objective 32b removing heat from the engine when the engine is operating, transferring heat to NSCW
- 2) Jacket water on shell side;
- 3) NBCW on tube side, flows continually d.
Jacket water standpipe Objective 32d 1)
Functions:
- Allow for volumetric changes due to temperature variations
- Provide makeup trater
- Absorb pump pressure variations i
31
. - -. - -. ~. -.. - - -.. - _ -... - -.
NL-LPail2O3-02-C I Ill.
LESSON OUTLINE:
]
NOTES
- Provide positive suction head to the Jacket water and keep-warm pumps 2) 600 gallons u.- Lube all cooler Objective 32e
- 1) Purposes Provide means of remo'ving heat from engine lubs all 2)
Jacket water through tube side, at 900 gpm 3)
Lube oil through shell side f.
Jacket water keep warm pump Objective 32f 1)
Functient
- Circulate heated water from the standpipe through the tube oil cooler and engine components, while the engine is in standby, to promote engine starting 2)
Horizontal, centrifugal pump 31 50 gal / min, 50 f t head 4)
Powered from 400 VAC HCC INBl/INB0 Dbjective 33a g.
Jacket water keep-warm heater Objective 32g
!)
75 KW immersion heater
- 2) Functicn Heats the water which the keep-warm pump circulates 3)
Thermostatically controlled 4) 430VAC MCC INBl/IN00 Objective 33b 4.
Instrumentation, controls, permissives a.
Jacket water keep-warm pump permissives Objective 34 1)
Stops when engine starts 2)
Starts when engine stops 32
NL-l.P-il2O3-02-C Ill.
LESSON OUTLINE:
~
NOTES
- Power to INBl/lNB0 not available in 91 conditions b.
Jacket water keep-warm heater permissives 1)
Starts if keep-warm AND thermostat (150" pump is running F) demands, start 2)
De-energized when pump stops c.
Diesel generator trips anscciated with JW Objective 35 system 1) 7/3 high Jacket water temperature sensors
- 200 F water temperature exiting engine
- trips DG, regardless of how started
- shutdown signal terminated after about 90 seconds, and engine can be restarted if problem was corrected 2)
Jacket water pressure low trip
- 6 psig or less JW pressure
- Trips DG efter normal start Alarms only if emergency start d.
Annunciator alarms 1)
DG LOW TEMP JACKET WATER - IN 140"F 2)
DG LOW TEMP JACKET WATER - DUT 140"F 3)
DG HI 1EMP JACKET WATER - IN 175"F 0
4)
DG HI TEMP JACKET WATER - OUT 190 p 5)
DG TRIP HI TEMP JACKET WATER 2/3" Outlet header temp. detectors 200 F 6)
< 8 put water pressure being supplied to engine 7)
DG TRIP LOW FRESS JACKET WATER
< 6 psi 33
- l o _ _ _ _ _ _ _ _ _ - - - - - - - -
nL-tr 41203-02-0 lil.
LESSON OUTLINE:
NOTES 8)
DG LOW LEVEL JACKET WATER Standpipe level 4" below centerline of JW return header 9)
DG HI JACKET WATER TEKF SENSOR MALF 1/3 JW trip sensors f ailed Sedond sensor failure can cause e.
Local indications and interpretations of trip abnormal readings 11 JW pressure, engine pump IN or DUT
- At engine's f ront gauge panel (auxiliary skid)
- Dual function, suct. press or disch press. normally aligned to show disch pressure
- Low discharge pressure indicated Pump failure Pump not running Low standpipe level Downstream break
- High distharge pressure indicated:
Blocked discharge flowpath 2L JW keep-warm pressure, pump IN or DUT
- At engine's front panel (Auxiliary skid)
- Dual function, suction or discharge pressure, normally aligned to show disch pressure Y
- Low discharge pressure indicatedi Pump failure Pump not running Low standpipe level Downstream break Suction isolation valve closed
- High discharge pressure indicated Possible blocked dischargs flowpath 34 f
HL-LP-112Va-Uk-C
~
_ lli.
LESSON OUTLINE:
NOTES 3)
Jacket water pressure gauge on engine control panel
- Reads JW pressure downstream of tube oil cooler, being supplied to engine
- Low Pressure Engine driven JW pues malfunction Leak in JW system Low level in JW standpipe 4)
JW IN, JW DUT thermocouple digital readouts
- At engine control panel
- At normal range 142"F to 170"F
- Low reading can indicates Keep-warm pump heater or thermostat malfunction
- High reading can indicate Three-way temoerature control valve stuck in bypass Engine driven JW pump malfunction Loss of or insufficient NSCW flow Engine overload Biofouling of NGCW side of Jacket water cooler 5)
Wide range level instrumentation,and narrow level instrumentation
- Low level indicatede Loss of water (leak or drain valve open)
Water temperature low
~'
- High level indicatedt Temperature increase Leak into system (NSCW or lubs oil) 5.
Operations a.
Engine normally in stendby 1)
JW temperature bel-e maintained by Objective 37 cycling on/off of ww kW heater, (Partial) controlled by thermostat set for 150 F Water being carculated by JW keep-warm
- 5 i
NL-LP-11203-02-C i
111. LESSON OUTLINE:
NOTES
-\\
pump, running continuously (while in i
standby)
- 2) Checked on rounds, every 0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />
- JW IN tthermocouple readout)
- JW OUT (thermocouple readout)
- Jacket water keup-warm pump pressure tengine front panel)
NSCW provides Objective 30 cooling water for the diesel generators Engine can run loaded only about 3 minutes without NSCW flow 41 Dwmineralized water t-
- Provides makeup of water to the Objective 3B standpipe
- Manual makeup through norsally isolated valves
- Chemistry Dept. treats Jacket cooling water by adding chemicals to control FH, copper corrottrm and f errous corrosion b.
Engine running 1)
Checks mode, and readings taken on including JW checks DG operating log (18085-C)
- 2) JW temperature is being maintained Objective 37 by thermostatic control valve s by-(Partial) passing some flow around, and allowing some flow through the JW cooler, to maintain JW temperature 3:
- IU2'F and below, valve is tully by-pasging 170 F and above, full flow through cooler E.
Cembustion Air Supply and Exhaust 1.
Purpose l
i -
_y,,
c
--.--e
i NL-LF-it2V3-02-C i
111. LESSON OUTLINE:
NOTES Provide filtered, compressed air f or combustion, arid a means f or removal of exhaust products 2.
Functions of system Objectiva 39 Filter air being supplied to engine, 4.
b.
Silence air being supplied to engine, and exhaust from engine, to minimite tiolse levels in DG building Ineresse engine efficiency by compressing c.
the air being supplied for combustion, then tooling it through coolers d.
Isolate whon r tred on an engine trip, by shutting off the comb'astion air damper for each bank 3.
Components and Flowpaths NL-1P-il2O3-C-016 Objective 41 4.
Intake air filter Students draw system flowpath 1)
Removris dust and grit from air befo-e NL-TP-11203-C-017 it enters engine 2) 011 bath type (Cycoil" brand) 3)
109 cal of oil in reservoir 4) 25,100 scf m r ated flow 5)
Locatad on 2nd level of building b.
Intake silencers 1)
Minimize DG room noises 4 2) 2 Tubular duct sliencers per unit c.
Combination exhaust driven turbine /
contrifugal blower on common shaft 2)
Two, one for each bank 3)
Exhaust turbine functions.to cause bloker to turn i
37 l
. LPal1203-02-C 111. LESSON OUTLINE:
NOTES 4)
Blower functions to pressurire the fresh, filtered combustion air
- 5) Water cooled by Jacket Water system 6) 011 lubricated bearings d.
Combustion air coolers (intercoolers) 1)
One for nach bank 2)
Jacket water cooling medium
)
3)
Removes heat of compression from i
turbocharged air 4) 900 gpm Jacket water flow e.
Combustion air supply dampers 1)
_Two, one per cylinder bank 2)
Close on engine trips to isolate combustion air supply (smother) 3)
Actuated by cy!!nder-type pn?umatic i
actuators Air supplied to extend actuators, closing the-dampers Spring pressure opens dampers when air is vented from actuator f.
Air intake manifold
- 1) Distribute combustion air supply to each cylit. der 4
- 2) _ Runs beneath " catwalks", each bank 9
g.: Exhaust outlet manifolds 11 Exhaust gasses from each cylinder 2)
Collect in common pipe and discharge to turbocharger h.
- 1) ' Turbine blades driven by gasses q
exhausting drom engine cylinders 1
3B
.;._.a,_._.__.._,_._,
. 1.--
02-C 111. LESSON OUTLINE:
~
NOTES 1.
Exhaust silencer (muffler)
- 1) Upstairs in DG building
- 2) Conducts heat and exhaust oroducts
=
out of building, plus minimitas DG building noise 4
Instrumentation Controls, Permissives a.
No active controls (Start /Stop switches) b.
On engine trip, combustion air dampers close, strangling air supply to engine c.
Shut rapidly (less than about 1.5 sec.)
on overspeed of engine Overspeed trip occurs at 517.5 rpm d.
Shut slowly on other trips due to the path that the control air must take NOTE: Dampers shutting more quickly on over-From IEN 86.007 speed is due to an engine-damaging over-speed incident at Grand Gulf.
Slow response of overspeed tripping devices, plus improper recovery from governor maintenance allowed the engine to overspeed on a test start.
Modification at VEGP added a second overspeed vent valve to ensure dampers close rapidly on an over-speed trip s.
Associated DG trips and alarms
- 1) LDW PRESS TURBO O!L - RIGHT Already covered with tube cil information
- 2) LOW PRESS TURb0 OIL - LEFT 3)
TRIP, LOW FRESS TURBO DIL
- 4) Vibration trip - vibration sensor on each turbocharger, plus two engine vibration sensors
- 5) Turbocharger associated trips will not trip the DG if DG ilad been emergency started (SIS,-or manual) f.
Local engine panel 1)
Combustion air pressure
- 9 n
..e e
n,
..,-,-,mw,.rrm--
iet-Lr-n.vs va w Ill.
LESSON OUTLINE:
NOTES
- Intate manifold pressure being supplied by turbochargers
- LEFT-TEST-RIGHT selector, one gauge
- Proportional to load tapprox)
- Dif f erence in bank pressures' can indicate turbocharger problems 2)
Theraccouple digital readouts
- thermocouples 1-0, lef t bank cyl.
- Thermocouples 9-16, right bank cyt.
- Thermocouples 17, 18 - turbocharger atock exhaust temperatures 5.
Operations a.
Principle of operation of turbocharger 1)
Turbine receives exhaust, and spins Objective 40 2)
As exhaust-driven turbine spins, so does its bearing-supported shaft 3)
At other and of shaft, blower wheel pulls fresh air in, pressurizes it, and discharges to an intercooler 4)- Turbocharger pressurizes intake manifold 5)
Amount of air being pulled in depends on flow of exhaust being discharged, so turbocharger speed wilf vary with load due to heat increase with load 6)
Scavenges exhaust from cylinder after exhaust stroke
- 7) Fills cylinder with air charge of high density on intake stroke 8)
Turbocharger bearings
" Drip" lut.e f rom tube oil keep-warm system, while engine is in standby
{
49
~
nu ur-a.6vevc u lli.
LESSON OUTLINE *
[
NOTES
~
i "Prelubrication" Just prior to plcnned engine start (1-2 minutes) until after engine started, bypasses drip orifices, from lube oil keep-warm system
- Not mal lube - provided by engine's main ol', rumps, upon start 9)
Turbocharger couling n
W
- Jacket water system b.
Temperature monitoring Objective 43
}
1)
Turbothgeger inlet temperature limited Manufacturer's war-to 1200 F rantv - 1200 F man h
to turbine 2)
Not directly read, so ww use a cyligder exhaust temperature limit of 1050 F maximum 7
3)
Cylinders cool slightly between C
strokes, and cylinder thermcouples will read average temperatures, so cylinder temperature tiedings will be less than the temperaturu'of the tahausts from the cylinders combined
- 4) May approech 1050"F at 110% (overload) testing 5)
Each cyli.1aer should be within 1 50 F of everage of all_ cylinders-t.
intake filter-operation Objective 45
.M
- 1) 011' bath-air cleaner i..; 3 j
- Air flows into filter through bug screen, and up through a ventbri-type liquid lift tube which forces the oil through an outlet at top to engine
- Air mixes with oil droplets at holes in cistribution plate
- 011, dust, grit filtered by self-cleaning pad, and drain back to reservoir 41
\\
l
NL-LP-11203-02-C Ill.
LESSON OUTLINE:
NOTES 1
- Mist eliminator pad further removes oil mist 2)
Imp y tance of proper oil level
- Level too high, could be fromt Water is reservoir Dust displacing oil Ivvel
- Low or no eti level Dust enters engine cylinders and een cause premature wear
- Ciight sludge buildup in bottom of reservoir a part of normal opteration d.
Water lo intaks manifolds b
- 1) Can damage engine head or cylinder, Water 15 if water also enters a cyltr.dar, incompressible causing tracks, leaks Objective 44 2)
Detected by 1/4" bleed line at bottom of each intake manifold 3) 4 lines total, "one at each engine Corner" g
- 4) Provide tell-tale, in case there is water intake manifold 5)
Provide small but continual blowdown Hith engine running 6)
Water leaks possible from, turbocharger or intercooler III.
SUMMARY
A.
Review Objectivt B.
Answer Questions 42 i
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Ef1ERGENCY DIESEL GENERATOR - ENGINE 1111.E 3 gggggg; NL -LP-11204-00-C CONTROL _AND PROTECTION pgfjggg; OUTSIDE AREA OPERATOR REYl S 10ll:
0 3g;(gig, G. D. STONE D Al E :.
10/26/a7 APPROVED:
DALE:
S/////'l llisiltir.lfR Lillifl.Ilf.St FORMAT A.
Lecture with visual aids MATERIALS A.
Overhead projector B.
Transparencies C.
White board with narkers III.
EVALUATION A.
Written or oral exam in conjunction with other lesson plans IV.
REMARKS A.
A perf ormance-based instructional unit (IU) is attached to i:he lesson plan as ' student handout.
Af ter the lecture, instruction ehould be provides y the attached instructional unit.
The instructor.should be avails., e to answer any questions that may arise co'scerning the 10 aaterial.
After instruction en the IU, the student wf11 perform, striolate, observe or discuss (as identified on the cluster signoff criteria list) the task covered in the instructional unit in tne presence of an evaluator.
,n N AxS...R ^, PY moman
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F~r~
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NL-LP-11204-00-C l.
PURP6SE STATEMENT:
FOLLOWINGCOMPLETIONOFTyl8LESBON,THESTUDENTWILLPOSSEBSTHOSEKNOWLEDGES SYSTEMATICALLY IDENTIFIED FOR THE PERFORMANCE OF DIESEL ENGINE CONTROL AND PROTECTION SYSTEM TASKS II.
LIST OF OBJECTIVES:
l.
State the uses of the pneumatic portion of the emergency diesel engine control and protection system.
2.
State the source of air supplied to the pneumatic engine control system.
3.
List the basic uses of the A, B, and C control circuits, and state how they are monitored.
4.
List the diesel engine and generator control panel permissives that are necessary for the following to occurs a.
Normal manual start, from control room b.
Normal manual stset, fram engine control c.
Automatic start on loss of of fsite power o.
Automatic start on safety injection signal 5.
List the protective trips available to the diesel generators after a normal start.
6.
List the protective trips available to the diesel generator
,after an emergency start has occurred.
7.
Describe the operation of the PULL-TO-RLN/ PUSH-TO-SIOP button at the engine front.
B.
For the fellowing pushbuttons on the diesel engine control panel, state the response which will occur when each is pushed ter actuated).
a.
EMERGENCY START (when glass is broken) b.
START c.
OPERATION NODE d.
MAINTENANCd MODE e.
ENGINE ROLL f.
EMERGENCY STOP (break glass, pushbutton) g.
EMERG-STOP RESET h.
STOP 1.
RESET FROM LOCA 2
1
.2 NL-LP-ll204-00-C it.
LIST OF OBJECTIVES
~
9.
For the (qllowing indicators on the diesel engine control panel, state the,Nignificance of each being lita a..
UNIT AVAILABLE b.
EMERGENCY STOP c.
DIESEL AUTO START SIGNAL d.
SHUTDOWN SYSTEM ACTIVE e.
SAFETY INJECTION SIGNAL f.
IN TEST SEQUENCE g.
52-G CLOSED h.
READY TO LOAD 1.
RUNNING j.
STOPPING k.
BYPASS TEST FAILURE 1.
STARTING 10.
State the function of the Woodward Governor System.
11.
Give a brief description of the uses for the three control knobs I
on the EGB-35 governor actuator, and the approximate values to which they are normally set 4.
LOAD LIMIT b.
SPEED SETTING ADJUSTMENT c.
SPEED DROOP 12.
Describe how the Woodward type SG Overspeed Trip functions to shutdown the diesel engine.
13.
Describe the response of the fuel rack shutdown cylinder and combustion air valves to a diesel trip signal.
14.
State the permissives which allow barring of the diesel engine, and state the difference between barring and rolling.
15.
Give a brief description of the cylinder moisture check.
16.
Discuss how trends in the parameters monitored by 1.qging (using 11885-C) during operation can be used to determine operational problems.
p 17.
State a probable consequence of starting the EDG with an inadequate governor oil level, or without prcper governor venting by maintenance personnel.
18.
State the method-of detecting engine incalance and the possible consequences of sustained engine operation in_an unbalanced condi ti on. -
19.
State the reason for the cylinder moisture check after the emergency diesel generator han been run, nd give the time scheduled f or the check.
I 3
NL-LP-11204-00-C REFEREACES:
~
1.
PLANT V0GTLE PROCEDURE 8e 13145, DIESEL GLNERATOR (REV 8) 13146, DIESEL GENERATOR FUCL DIL TRANSFER SYSTEM (REV 1) 14900, DIEEEL 6ENERATOR OPERABILITY TEST (REV 1) 13427, 4160 VAC 1E ELECTRICAL DISTRIBUTION SYSTEM 17035, ANNUNCIATOR RESPONSE PROCEDURES (REV 3) 17038, ANNUNCIATOR RESPONSE PROCEDURES (REV 3) 2.
TECHNICAL SPECfFICATIONS:
3.8.1 ELECTRICAL POWER SYSTEMS, AC SOURCES 3.
STANDBY (EMERGENCY) DIESEL GENERATOR, V0GTLE TRAINING TEXT CHAPTER 16C, VEGP 4.
PLANT MANUAL CHAPTER 36, REV 0 5.
PinIDS, LOGICS AND OTHER DRAWINGS:
PIPING AND INSTRUMENT DIAGRAMS:
1X4DB170-1 (REV 21) 1X4DB170-2 (REV 21)
VENDOR DRAWINGS:
AX4AK01-27 (LUBE DIL)
AX4AK01-26 (JACKET WATER)
AX4AK01-29 (STARTING A!R)
AX4AK01-28 (FUEL OIL)
CONTROL LOGIC DIAGRAMS 1X5DN107-1 (D6 FUEL DIL SYSTEM) 1X5DN107-2 (D6 UNIT ENGINE) 1X5DN107-3-(GENERATOR)
ELEMENTARY DIA6RANS:-
1X3D-BH-603C (REV 2) 1X3D-BH-6030 (REV 1) 1X3D-BH-603F (REV 2) 1X3D-BH-603F (REV 2) 1X3D-BH-6036 -(REV 1) 1X3D-BH-603H (REV 3) 1X3D-BH-6031-(REV 2)
-1X3D-BH-603J (REV 3)
ONE-LINE DIAGRAMS 1X3D-AA-A01A (REV 12) 1X3D-AA-K01A (REV 7) 4 1
.-. = _ -.
.-~
~
NL-LP-11204-00-C REFEREACES:-
~
~
6.
VENDOR MANUALS AX4AK01-509 (REV 0)
~
AX4AK01-510 (REV 2)
AX4AK01-563 (REV 6) 7.
F.S.A.R.
0.3, 9.5.<4, 9.5.5, 9.5.6, 9.5.7, 9.5.8
- 8.
CAP COMMITMENTS:
+
SOER 83.006 UNAVAILABILITY OF EMEPGENCY POWER CAUSED.BY DIESEL AND BREAKER UNAVAILAB:LITY SOER 83.001 DIESEL GENERATOR FAILURES SOER 84.042 SYSTEM INTERDEPENDENCY OVERSIGHTS RESULTS IN LDSS OF REDUNDANT SAFEGUARDS FUNCTIONS IEN 85.026 PARTIAL LOSS OF AC POWER AND DIESEL GENERATOR DEGRADATION IEN 84.069 OPERATION OF EMERGENCY DIESEL GENERATORS OMR 297 GRID HIGH VOLTAGE AND UNDERVOLTAGE TRIP RELAYS CONTRIBUTE TO EDG OUTPUT BREAKER LOCKOUT NUREG 1216.000 SAFETY EVALUATION REPORT-RELATED TO OPERABILITY, AND RELIABILITY OF ENERGENCY DIESEL GENIRATORS -
MANUFACTURED BY TRAN6 AMERICA DELAVAL, INC" (NOT AN OAP ACTION ITEM, BUT A TRAINING COMMITNENT) 9.
INSTRUCTIONAL UNITS: NONE 10.
TRANSPARENCIES:
NL-TP-11204-001 LESSON OBJECTIVES NL-TP-11204-002 BASIC DG GOV. CONTROL NL-TP-11204-003 EGB-35 GOV / ACTUATOR CUTAWAY NL-TP-11204-004 EGB-35 GOV / ACTUATOR 3-u!EW NL-TP-1204-005-OVERSPEED TRIPL RONT/ SIDE F
NL-TP-11204-004 OVERSPEED. TRIP - CROSS-SECTION.
NL-TP-112W-007 ENGINC CONTROLS,-PDG2/PD64 NL-TP-11204HXG DG CONTROLS, G'EAB 11.
BTUDENT HAttDOUTS:
Nt*HO-11204-C-001-ENERGENCY DIESEL GENERATORt ENGINE CONTROL AND PROTECTION
)
ll t
l-5-
NL-LP-11204-00-C-Ill.
LESSON OUTLINE
- NOTES 1.
INTRODUCTION' i
F A.
This lesson describes how the diesel engine controls function,in the starting, running, and stopping of the engine, and include a review of engine protection devices B..
The operation of Woodward governing systems used for adjusting engine speed and load are presented-C.
There su a separate lesson f or the generator and its protection D.
Present Lesson Objectives NL-TP-11204-001 PRESENTATION A.
Overview, Engine Controls 1.
Provides a means of starting. loading, running, and stopping thw diesel generstor 2.
Locations a.
Normal control from control room (DEAB) b.
Backup control from diesel engine control panels PDG-2 (Train A)
PDG-4 (Train B) 3.
Two basic modes of operation 4.
Operational mode
- 1) Control circuits armed 2)- Must be in operational mode to be operable V
l b.
Maintenance mode 1)
Start circuits locked out 1.
- 2) Used for repair, maintenance, barring.
rolling 3)
Pushbutton on local panel l
4)
DG INOPERABLE in MAINT. MODE s
4.
Selection of control station a.
LOCAL / REMOTE switch I
-6
h NL-LP-11204-00-C lil.
LESSON OUTLINE:
NOTES 1)
Saitch on Generator Control Panel PDG-1 Train A PDG-3 Train B
- 2) Normally in REMOTE (control room operation)
- 3) FAINTENANCE mode selecticn possible only af ter local operattor is selected 4)
DG "!NOPERABLE" in LOCAL No start on SIS (Auto)
No start on Loss of Offsite Power (Auto)
Can be manually started, PDG-2/PDG-4 Can be emergency started PDG-2/PDG-4 e
B.
General Functions 1.
Electrical control circuits a.
Three circuits, A, 8 and C, 125VDC b.
Function
- 1) Start and stop inputs
- 2) Alarm functions
- 3) Senerator interface
- 4) Control of auxillaries 2.
Pneumatic control circuits a.
60 psig control air, supplied from Air Objective 2 Start System (regulated f rom approx.
Drawing
-250 psig to 60 psig) 09-BOO-76021-2 in AXLIAK01-509 b.
Ball check valves allow supply, even if
++
one receiver depressurized c.
Functions and uses
- 1) Monitor various engine parameters, Objective 1 1.e.,
pressures and temperatures a
7 l
, ~,,..,,,,
?
NL-LP-il204-00-C 111. LESSON OUTLINE:
~
NOTES 2)
Generate a shutdown signal in response to sensor tripping, to cause engine trip by closing combustion air dampers
~
and move fuel racks to no fuel" a
d.
Pneumatic logic is hinary logic 1)
Examples three-way valves,'one passage closes as another opens 2)
AND, OR, NOT, MEMORY, etc.
e.
Pneumatic delay circuits 1)
Timing chamber in accumulators air is metered through orifice 2)
It takes a specific '.ime to bleed or charge the accumulator with control air 3.
Pneumatic / Electric Interfaces i
a.
Inputs from electrical system, generatts pneut.atic signala b.
Pressure switches 1)
Outputs from pneumatic systet., used se status and control inputs to electrical portion 4.
Governing Systems a General NL-TP-il204-002 a.
Functione control amount of fuel oil being supplied to engine by injector pumps, in Objective 10 order to control DG, speed or load b.
Generate Output Sensed 1)
Speed - (frequency of AC) - DN!Y
- 2) Load - (volts and amps)
Parallel c.
Lead or speed signal compared to contr'ol inpat
- 1) Control input so speed setting of potentiometer
- 2) Local or contrcl r com handswitch adjusts motor art ven potentiometer 8
NL-LP-il204-00-C l11. LESSON OUTLINE:
_NO ESi] _
d.
Gov er nor-Ac t u a t or 1)
"Er.or signal" from electric control causes changes in ynvernor-actuator output 2)
Output from governor-actuator controls flow of fuel to engine 3)
Governor-ectuator has a centrifugal (mechanical) section governor to bark up the electric governor C.
Components 1.
Woooward EGB-35 Governor-actuator More detall in Vendor a Manual a.
Stalled work capacity 35 f t-lbs torque AlljAK01-564 b.
Electric governot-section, mechanica!
NL-TP-il204-003 gover nor, and actuator to positten terstnal (output) shaft c.
Self-contained hydraulic oil supply 011 supply critical
!) Oil heat exchanger cools governor oil, using Jacket water 2)
Self-contained oil pumps d.
Small DC speed - adjusting r.otor on tcp of ours is not connected for use e.
Mechanical governor
- 1) Centrifugal speed s6nsing flyweight head, driven by the engine, oppossd by
" speeder" spring force f.
Electric governor 1)
Recet /es output of EGA control bon
- 2) Polarized coil produces f orce pr oportional to current in coil changing electric signal to hydraulic g.
Three external adjustments 1)
Load limit knob Objective !!a a)
Limits maximum engine load, NL-TP-il204-004 whether the unit i s controlled by mechanical or by electric 9
.-~
...-.- - - - ~_.._ -._._ -. -
--~.- - - --.-.-
e l
NL-LP-li?04-00-C i
111. LESSON OU_TilNE:
NOTES governor / actuator b) Ranges " MIN FUEL" to " MAX FUEL" f
c) Normal Settings MAX FUEL 2)
Speed setting 4djustment knob Objective 11b a)
Sets the speed to which the mechanical governor will control engine speed b) 470 rps (approx. 4 1/2% higher than normal speed) c) Vernier dial, turning knob changes tension on s9eeder spring d) Setting adjustment varies from governor-to governor but ranges of 11 - 14 expected.
Actual setting must be obtained from standby sode status checks.
Checklists in Frocedurt= 13145-1, or Orprability Test e) Speed-setpoint of mechanical governor (470 rpm) is high enough to not interf ere with normal operation of electric Governor 3)
Spoed droop control knob - st.s speed Objective lic dro e of mechanical governor a) teormal setting is 2.5 (5% speed drosp of mechanical governor) b) Speed-droop can be calculated by noting dif f erence in no-load and full-load speed, divid6d by no-load speeds c) Example Assume that all No had was a mechanical governor.'If the engine is started, the speed would go to 470 rpm, if speed droop was 4 1/2%
(470-450)/470 Now we load the generator, and by full load, diesel generator' speed should to
l NL-LP-il204-00-C
.___ lli. LESSON OUTL!NE:
NOTES have "dropoed" to 450 rpm, due to the added load n.
Booster Sorvomotor 1)
Compressed air f rom the startidg air system moves a spring-loaded pisten inside the servomotor 2)
Governor oil on other side of piston 3)
Oil under pressure supplied to governor, and governor moves fuel linkage to fuel-on 4)
Engine fires at once, rather than waiting for buildup of governor oil pressure 2.
Wooowaro EG A Control Box a.
Electronic unit in generator control IX30-BH-G03G panel b.
Works along with speed-setting potentiometer (60V"NOP" on print) c.
Function - to produce a signal to the electric portion of the EGB-35 governor-actuator, to control speed (and frequencv) if in unit mode, or load, if in parallel (droop) mode d.
Speed detected by output frequency of generator
pot entiometer 2)
Speed (f requency) is the sensed and controlled parameter when in isochronous (untt) mode 3)
When speed (f requency) agrees with speed demanded by speed +setsning potenticaetor, a constant signal will be sent to electric governor section of EGB-!5 governor-actuator
~
Load is detectsd by generator nutput e.
voltage and current 11 DC signal procaced, proportional 11
NL-LP-li204-00-C Ill.
LESSON OUTLINEL NOTES to KW output of generator 2)
OC LOAD signal summed with opposing signal from speed-setting potentiometer 6
- 3) When the loAu Jignal and speed-setting potentiometer do not agene, a current la sont to a coil in the electric portion of the governor-actuatot'
- 4) Electric signal changed to a hydraulir, sigin!
3.
Woodward Overspeed Trip, Type GG NL-TP-11204-005 a.
Driven from same engine that driven the fuel pump b.
Self-resetting af ter trip, when speed drops below tripping speed c.
517.5 rpe tripping speed d.
Flyweight, spinning, proportional to engine l
speed, tende to lift a plunger value NL-TP-il204-006 e.
Flyweight assembly opposed by speeder Objective 12 spring f.
At trip speed, att under pressure-passes-through pilot plunger, lifting po w piston g.
Power pistun causes terminal shaft to rotate h.
Are out tereinal shaft moves, striking two air vent values 1.
Vent values - do not self-reset, must be ennually reset J.
Vent values-cause air to be supplled to close air damper and extend fuel shutdown cylinder D.
Controls ard Instrumentation 1.-
125VDC: 2 C1 ass 1E, and one non-1E, interfaced A & B one IE
-with DG for control purposes C is non-lE a.
'A' Power (125V DC)
IX3D-BH-G03C Objective 3 (part) 1)
Starting (basic uses) 12
U NL-LP-11204-00-C Ill.
LESSO.N OUTLINE:
NOTES al Deactivate shutdowns (or emerg, i
attrt) b)
I sec. field flash delay c)
Two air start so16nolds enirgize d)
Activate shutdowns (normal start)
Gaf ety inJ start from GSPS 11 49s 'w?rg start (PS-45A) g
- v. gs wf c4441tm power (sequetwer) h)
SpetV switches (100 and 440 rpm)
- 2) Monitorie.g (basic use) a)
Optical isolators b) 6everal generator related (and other) annunciators 3)
DIST pn1 1AD11, Skr 72 11 (Train A) 4)
DIST pn1 19D11, Pkr 72-11 (Train B) 5)
' A' Power monitored bys "A power available" white indicating light on 3Jd2/PDG4 b.
'B' Power (120VDC)
(
1)
Str.rting thesic use)
Objective 3 (pert) al' 8tatlar functions as 'A' circuit s
2)
Stopping functions (basic use) a) ENERG stops h) MAINT/0PERATIONAL mode circuits c)
STOP circuits d)
"!N TEST BEOUENCE" indicator (sequencer an testing).
3.6 DISTR. panel IAD12, BKR 72-11 i
(Tr. A) l 4)
DISTR. panel 1BD12, BKR 72-11 13
NL-LP-11204-00-C lli.
LESSON OUTLINE:
~
NOTES (Tr. D)
+
$)
'B' power monitored byl "B power available" white indicating light on PDG2/PDG4 c.
'C' Power (125VDC) 1A3D-BH-G03E Dbjective 3 (part) li Alarms (baste use)
PS-9N 1, 2 f rom fuel rack cyl.
a)
Failed to start alarm (200 rpm in entenced 5 sec Roset P.B. part of ann..nci6 tor reset sw
?)
Power-for PDG2sPDG4 panel indicating lights (basic lights)
C 3s Annunciator power (basic use) (logic, horn) 4)
Crankcase fan and generator heater control powe*
- 5) DISTR pans) IND31, BKR 72-07 (A t-ain)
(Non 1-El 6)
DISTR panal IND32, BKR 72-11 (B train)
Plon 1-El 7)
'C' power monitor ed by:
"C power avellable" white indicating light on PDG2/PDG4 d.
120V,4C.
s
!)
Power to thermocouple 1sgital Anoicator panel " Doric Trendicator"
- 2) Hour-eater
- 3) Panel heater and interior Itght 2.
Engine Etarts 1
a.
Normal engins starts
- 1) Control Soc.a - manual pushbuttons 2)
Diesel generator control panel (local) pushbutton 14
NL-LP-i!304-00-C lli.
LESSON OUTLINE:
NOTES
.,_]
- 3) Automatic - loss of offsite power 1
b.
Emergency engine starts l
- 1) Automatics safety injection signal
- 2) Manuals local emergency breakglass 3.
Permissites for engina starts - normal IX5DW170-2 i
a.
Normal start - pushbutton, control room Objective 4a (CEAB)
- 1) local / remote switch (LRS) in REMOTE 2)
DG is in OPERATIONAL mode b.
Normal start - pushbuttcn, local engine Objective 4b panel (PDG2/PDG41
!) LRS in LOCAL Il DG is in OPERATIONAL aode C.
Normal start - loss of of f site power -
Objective 4c automatic start
- 1) LRS in PENOTE 1
- 2) From sequencer, loss of voltage, 2/4 UV f or.8 se:onds at 70% nominal voltage l
- 3) From sequencer, degraded voltage i
2/4 UV f or 20 sec, at 88.5% normal voltage NOTE: Alarm is 2/4 UV ri.1% for 10 sec.
l 4)
D6 f or the bus with the UV starts d.
What occurs on man, normal starts 1)
Start air solenoids energine l-a)
Start air to engine until 200 rpm or 5 seconds 2)
Saf e shutdown trips inservice (some initially bypassed for 90 sec.)
3)
Accessortes affected 15
- - ~.
r e
M.-L P-i l ?04 C lli.
LESSON OUTLINE:
~
NOTES [
a)
Gen spats heater off b) JW keepwarm pump off c) LO Leopwarm pump off d) l'our-meter actuited
- 4) Generator's field flathed a)
After 1 second, OR l
b)
When 200 rpm reached 5)
At 440 rpm (and 90% genarator voltage)
A)
Permissive to close breaker b)
Breuker closurs requires other permi ssives, covered in gnother lesson plan c)
Breaker stays open 6)
Auto r.ormal start same, excepts a)
On loss of of f site power, governor speed-setting potentiometer (and voltage regulator's ad tusting potenticmeter) prs-position to 60 H! and 4160V position h)
Speed and voltage can not be adjusted for 15 seconds from initiation el DG output breaker el aes 90% voltage, 440 rpm 4.
Permissives f or engino startr,, emergency 1X50N 170-2 4.
Automatic emergency start - SIAS
- 1) LRS in Renote Gujective 4d 2)
DG 'DPERATIOP - " mode 3)
Start air pressure > 150 psig 4)
Bafety injection signal occurs b.
Manual emergency st ar'.
16
NL-LP-il204-00-C 111. LESSON OUTLINE:
~
~
NOTES 1)
DG in "0FERATIONAL" mode 2)
Dreak the lens on the breakglass for en.orgency start (button is released) 3)
LRS (n Sither position c.
What happens on emergency start 1)
Shutdown system deactivated, leaving cnly four trips available 2)
Normal trip signals bypassed
- 3) Governor and voltage regulator Also, if in motor operated potentioseters PARALLEL, gov. is pre-position (60HZ, 4160 VAC) is changed to UNIT N3D-BH-G03G, H "UPR" retay
- 4) Air start solenoid valves close 200 rpm, or air receiver pressure dropo to 150 psig
(!f start did not occur, loce) checks made before wasting inore air. Heutarts can be cado using normal starts) 5)
Engine starts, comes to speed, gen.
voltage established 5.
Modes a.
Operational Hods PD-40A
- 1) Must be in Operatinnat mode for any start 2)
To enter a)
Barring device locked out b) No shutdown signals present c) Press " Return to Operational Mode' b.
Maintenance Mode 1)
No DG start available in Natnt. Mode 2)
To enter al Go to LOCAL first 17
_ _ _ _ _ _. _ - ~. _ _. _ _. _ _. -. _ _. _
NL-LP-!!204-00-C Ill.
LESSON OUTLINE:
NOTES b)
Shutdown system active (no SIS) c) Engine not running d) Maintenance pushbutton pressed
- 3) Can Air Roll DG - if barring device i
AS locked out c.
LOCAL / REMOTE switch 1)
Switch on gen. control panel 2)
In Remote, engine can start ont a) Normal manual start, control room b) Loss of offsite power c)
Saf ety injection signal l
3)
In Local, engine can start one a)
Stert pushbutton on PDG2/PDG4 (noreaal start)
NOTE: Local emergency star't Breakglass starts can occur if local or remote 6.
Trips, automatic -
tX5DW170-2 a.
Af ter normal start Objective 5
- 1) Lube oil temp high, 200"F r
2)
Engine bearing temp high, 228 F
' resetting" involves replacing fusible rod temp. detectors NOTE: The follcwing are inhibited froe causing an engine trip for the i
first 90 seconds after start
- 3) Crankcase pressure high, 3 psi
- 4) Turbocharger oni pressure low, 15 r,sig
- 5) Jacket water pressure low, 6 psig
- 6) Vibration (two engine sensors, and one f or each turbocharger)
NOTE: The above six trip signals IB
e NL-LP-!!204-00-C c-lil.
LESSON OUTLINE:
NOTES lock-aut a normal restart f or 90 seconds, but will not lock-out an emergency start 7)
Ger.erator fault, 1060
+
4 a) Normal restart af ter resetting of 1cckout b) No 90-seconds post-trip timer NOTE: The following four trips will also stop the DG if emergency started
- 0) Generator differential, 107, via 196A lockout a) Lock-out, and Emerg Trip Roset P.B. to restore
- 9) 2/3 lube oil pressure low, 30 psig a) Emerg trip reset P.B.
10) 2/3 high Jacket water temp 200 F a) Emerg trip reset P.B.
!!) Ove' speed, 517.5 rpe a) Hust manually reset two air valves b) Emerg trip reset 7.
Trips aitor Emergency start i
Objective 6 a.
186A Generator Differential Trip 1)
Lockout relay reset and Emerg Trip Guidance from i
reset pushbutton to restore, plus SR needed to reset adelnistrative guidance b.
2/3 Low Lube Oil Pressure, 30 psig I
!)
Fmerg trip reset P.B. to restore and allow restart 0
c.
2/3 Hi Jacket Water Temp, 200 F 1)
Emerg trip reset P.B. to restore and allow restart d.
Overspeed, 517.5 rpm 19
NL-LP+11204 00-C lil.
LESSON.. OUTLINE:
N_O.TES
!)
HLeet two air valves and Emerg trip reset to restart 0.
Manual Stops 1X3DW 170-2 a.
Normal Stops
- 1) Control Room stop P.O.
a)
LRS in Remote 2)
PDG2/PDG4 stop P.B.
a)
LRS in Local j
b.
Emergency Stops
- 1) Control Room Eenrg Stop P.B.s al 2/2 P.D.
(preseed at same time) b) LRS in Remote
- 2) PDG2/PDG4 Emerg Stop a)
Breaks glass, push button b) LRS either position 3)
Nust press Emerg Trip Reset to allow recovery a)
DG inoperable after an Emergency Stop, until restored c.
Stopping after Energency Start
!)
' Reset LOCA" pushbutton, then r; areal 4'
t, top 2)
The Eeerg Stop method WILL stop DG, but it is inoperable until reset and placed back in service, and is net the procedural method for normal recovery
-9.
Response to. Trip Signal a.
DG output breaker trips b.
Generator excitation circuits tripped (A L B)
Objective 13 c.
Fuel Rock Shutdown Cylinder D tends
" extensible link" 20
.~ -
NL-LP-!!204-00-C
_Ill.
LE.SSON OUTLINE:
NOTES
- 1) Control air to actuator
- 2) Fuel racks on injector fuel pumps go 1X4AK01-443-4 to "no fuel
d.
Con.bustion air valves - both close
- i
- 1) Control air to actuators v.
Governor and regulator potentiometerse STRESS AIR pre-position in preparation f or next start required to shut-down DG 10.
PULL-TO-RUN/ PUSH-TO-STOP switch Objective 7 a.
Located at front of auxiliary skid u.
Will trip DG when pushed c.
DG restart sends air signal to reset the switch, so does not keep DG shut down, if needed 11.
Controls on E6.gine f.ontrol Panel tL-TP-!!204.007 e.
ENERGENCY START - breakgless Objective 8a Breaking glass (or removing lens cover) 1X3D-BH-G03C, allows spring loaded button to " pop" out.
IX3D-BH-G03D, DG starts, with normal shutdown deactivated IX5DN107-2 b.
START - Pressing START pushbutton starts Objective Ob DG (i f LRS is in LOCAL) with normal shutdown d.n service c.
OPERAT!DNAL mode - returne DG from NAINT i
Objective Sc mode to OPERATIONS mode.
Must be in GPERATIONAL mode to start DG d.
HA!NTENANCE mode - with LRS in LOCAL, Objective ed pressing pushbutton takes DG out of OPERATIONAL mode, inhibiting all starts -
DG will not start.
Must be in MAINTENANCE mode f or barring and rolling operations.
DG inoperable e.
ENGINE ROLL - in NAINT. mode, allows Objective 8e spinning of 73 while P.D. is pressed.
Engine does not start.
The DG will stop spinning when the button is retsased f.
EMERGENCY STOP - breakglass in either Objective af local or remote with LAS, breaking glass and. pushing button steps DG locally. It can Glass is broken, not be restarted until emerg. stop has been buttons pushed.
t 21
NL~LP-ll304-00-C 111. LESSON OUTLINE:
NOTES reset, so D6 is INOPERADLE until EMERG STOP Dif fers f rom EMERG is reset START breakglat.:
g.
EMERGENCY STOP-RESET - Pressing pushbutton Objective Og f
resets manual or automatic EMERGENCY STOPS, once trip conditions have been clear'ed.
Permissive to restart DG, if no other trip signals present I
h.
RESET FROM LOCA - Resets Emergency Start Objective Si signal to DG start circuits, and places normal shutdown trips in service, allowing a normal stop (control room or local)
Normal recovery method after emergency start 1.
STOP - will stop the DG from PDG2/PDG4 Objective Oh I
i f LRS 1 s -in LOCAL, and engine has been started under normal start i
J.
TEST BYPASS - tests blocking of'ncraal DG trips when DG is running under an Emergency Start k.
Annunciator Pushbutton 1)
TEST 2) 91LENCE (born) 3)
ACKNOWLEDGE 4)
RESET Annunciatw pushbuttons must be depressed Keeps logic correct in cwrect sequence when an alare occurs BILENCE/ACKNOW' EDGE / RESET Horn does not sound if engine'is not running and alarm occurs - prevents burning up hwn in unattended building REBET also resets latching relays fw-FAILED TO START alarm 1.
PUSH-T0-READ pushbuttons for day tank and tube oil sump level indicators
!)
Control air supplied-to bubblers" 12.-
Indicating lights o14 PDG2/F OG4 Objectiv6 a.
EMERGENCY STOP - RED 1X3D-BH-G 22
i NL-LP-!!204-00-C i
111. LESSON OUTLINE:
NOTES 1)
Lit until reset, can not restar> until R-238-3 contact reset i
- 2) From Manual Eeerg Stop, or one of the four Auto Emerg Stops 4
b.
52G CLOSED - RED Objective 9g 1)
Gen, output breaker closed c.
SHUTDOWN SYSTEM ACT!VE - RED 113D-BH-G03E Objeettve 9d
- 1) Engine normal shutdowns active 2)
Lit on normal start i
3)
Extinguished on EhERGENCY STARTS d.
BYPASS TEST FAILURE - RED 1X3D-BH-G03E i
If lit red during Emerg Start, with TEST PS-36N BYPASS pressed, indicates a normal trip can Objective 9k trip the DG e.
UNIT AVAILABLE - BLUE Objective 9a 1X3D-BH-G03E, and No overspeed, and DC start ekt power
.tX5DN107-2 available, STARTING AIR PRESSURE
> 150 patg, barring device locked out f.
DG AUTO START Signal RED Objective 9c DG Auto Start signal exists free Loss of Offette Power, or Safety injection g.
SAFETY INJECTION SIGNAL - GREEN Objective 9e Lit on EMERGENCY STAni - from shutdown syst
-deactivate stenal h.
IN TEST SEQUENCE - RED 1X3D-BH-603D, Relay DG 1A-AX
- SEQUENCER (bFSS) IN TESTING Dbjective 9f l
- K 357 L
1.
READY TO LOAD - BLUE Objective 9h 1)
Engine at 440 rpm 2)
DG voltage 1 90'4. normal SDL202-3A, D j.
RUNNING - RED Speed switches 23
NL-LP-il204-00-C r
~
lit.
LESSON OUTLINE:
~
~
~~
N-.OTES
- 1) Engine speed above 200 rpm Objective 91 k.
STOPPING - RED Objective 9)
- 1) Lit on unit trip PSV-N!
- 2) Engine will not normal stret when lit
- 3) Pressing START will only waste air Objective 91 1.
STARTING - RED IX30-DH-G03E, 1)
Lit when starting is initiated IX4AK01-44-9
- 2) Normal or amorgency starts PS32-N2 m.
'A' PCWER AVAILABLE 1) 125VDC control power to 'A' circuit IX3D-BH-603C
d.
'B' POWER AVAILABLE IX30-BH-603D 1) 125 VDC control power to
- B' circuit
- 2) CB 3-4 on engine panel, IE sources o.
'C' POWER AVAILABLE - 125 VDC Control Power IX3D-BH-G03F to 'C' Circuit.
CB 5-6 on engine panel, Non-!E scurce E.
Operations NORMAL OPERATIONS 1.
Local control panels - normal standby 4.
All annunciator lights extinguished b.
" UNIT AVAILABLE" light lit c.
'A' POWER AVAILABLE light lit d.
'B' POWER AVAILABLE light lit i
e.
'C' POWEit AVAILABLE light lit f.
REMOTE / LOCAL switch on generator panels in REMOTE g.
JW Keep-ware pressure gauge 15 - 25 psig h.
L.O. keep-warm pressure gauge 30 - 50 psig 24
- - -. -.,- - =
4 9
NL-LP-il204-00-C lli.
L.ESSON _ OUTLINE:
NOfES
~
- i. Control air pressure gauge 50 - 62 psig J.
L.O. IN, OUT (Digital Thermo-142 - 170 F coup'e k.
JW IN, OUT (Digital Thermo) 142
'170 F 2.
Cylinder Moisture Checks a.
DG inoperable while in LOCAL b.
Reason f or running - to check f or evidence Cbjective 19 of water which may have leaked into a cylinder.
This can cause hydraulic lock of a cylinder, causing cylinder and head cracks or damage, if an engine start is attempted with full air pressure c.
Shift Supervisor notified of ANY moisture discovered, or if resistance is encountered when barring d.
When performed
- 1) Prior to a scheduled run, if not done within previous four hours
- 2) Four to alght hours after shutdown 3) 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> af ter shutdown e.
Rolling is use of starting air to spin the Objective 14 (part) engine, without its starting f.
Barring is slowly turntag the engine a smal.1 amount at a time.
Barring is done with a barring device, using. air pressure to extend a red,-with the rod pushing the engine's flywheel at holes in the flywheel g.
Permissives/ interlocks to allow barring Objective 14 (part) 1)
LRS in LOCAL 2)
Engine not running 3)
No LOCA signal present 4)
MAINTEf4ANCE mode selected
- 5) -Removal of lockout pin h.
Cylinder moisture check - brief description Objective 15.
25
NL-LPall204-00-C lli.
LESSON OUTLINE:
NOTES NOTE: Permission must be obtained -
DG inoperable during check -
Licensed Operator must consult Tech Spec
!)
LRS to LOCAL - FDGl/3
- 2) MAINTENANCE pushbutton pressed -
PDG2/4 3)
Verify fuel and air shutdown cylinder fully extend
- 4) Open all cylinder cocks Note presence of any moisture DEFORE barring AND after 5)
Open air supply valve to barring device 6)
Unlock pneumatic barring device by removing lockout pin 7)
Engage device in flywheel, bar over l
at Isant two revolutions of the flywheel i
This takes each piston through all f our combustion cycles 0)- Check f or evidence of moistus ?
9)
Disengage and lockout barring device 10)
Verify "BARRING DEVICE ENGAGED" alarm resets 11)
Close isolatten valve from receiver to barring device 3.
Engine Imbalance Objective 18 a.
Cylinders not carrying an equal load b.
Detected by observing cylindor exhauet temperature on Digital Thermocouple Readout (Doric Trendicator).
One (or more) cylinder's temperature excessively higher or lower than the average indicates possible imbalance Cylinderexhaustgemperaturewhichis Refs c.
greater than + 50 F of average should be AXUAK01-509, 4
26
~
NL-LP-ll304-00-C Ill.
LESSON OUTL NEI NOTES
'l investigated Page'0-3, and G-H-1, 2 d.
Causes:
Misadjustment of fuel injection pumps (possibly f ollowing maintenance activitters)
Injector problems
/ ;ording to Di r t, impurities in fuel oil factory rep, plugging of two i
spray nozzles on
~
an injector will cause fuel line to injector to rupture e.
Results of cylinder imbalance - cylinder (s) carrying excessive load, possibles 1)
Scored pistons and liners
- 2) Excessive vibration 7)
Excessiva otston, valve, bearing, and crankshaft wear 4)
Excessiva fuel centutt.ption 5)
Excessive tube oil usage 4.
Reviewing the DG Operating Log it105-C) 4 Commitment SOER 83-001 a.
Majority of engine problems preceded by begins some change in operating data.
Data changes can be so slight that tends may be hard to detect in shart time intervals Trends easier to determine if readings are taken under the same condi$1ons b.
Long-tores From Vendor's Manual
- 1) Lube oil pressure starts to decrease r r
but tube oil temperature stays constant l
a)
Bearing waaring t
b) Lube oil wearing c) Relief valve not tunctioning properly d) Possibly f uel dilution 27
NL-LP-11:04-00-C Ill.
LESSON O!!TLINE:
~
NOTES
- 2) Lube att pressure drops, tube et!
temperature increases a)
Problem with heat exchanger, possibly plugging up
- 3) Lube oil consumption increasing a)
Piston rings starting to foul b)
Valve guida wear c)
Leaks in tube oil cooler (Lube oil pressure higher than JW pressure, so leaks will be into the water system) 4)
Crankcase vacuum starts to decrease al Piston ring wear, causing blow-by
- 5) Jacket water temp. starting to rise a)
JW cooler starting to f oul b)
Would be hard to detcrmine, since temperature control valve can causeouglettemperaturetovary up to 15 F 6)
Jacket water outlet temperature drops (greater temp. differential across engine) a)
Poor combustion b)
Leaky head gasketts) c)
Scuffed pistons d)
JW system not vented e)
Faulty water pump c.
Short t erm, possibly f ound by reviewing From 17035-1 previous f ew logs Objective 21 begins
- 1) Keepwarm filter plugging (engine not running) 2)
Exhaust temperature in one cylinder different than a erage 28
t NL LP-11204-00-C Ill.
LESSON OUTLINE:
NOTES i
a)
Bad fuel pump, or injector norrie i
- 3) Exhaust stack temporstures above
!!mits 1
al Engine overicaded
- 4) Lube oil temperature IN/0UT increasing a)
Inadequate coolant flow through lube oil HX l
b)
Inadequate NBCW flow through JW cooler c) High NBCW temp d)
Diofouling of NGCW side of JW i
cooler e)
Engins overload
- 5) Fuel oil pressure decreasing a) Fuel oil filter clogged 1
b) Fuel oil strainer clogged c)
Pressure regulator f ailing open di Fuel pump malfunction
- 6) Jacket water pressure decreasing a) JW pump malfunction b) Leak in system i
c) Standpipe level decreasing
c) Pressure regulator (s) failing open d)- Pump malfunction a) Low sump level
- 8) Fuel filter diff, press. increasing l
29
NL-LP-11204-00-C Ill.
LESSON OUTLINE:
~ ~ ~ ~ ~ ~ ~ -
NOTES a)
In-service filter fouling b) Can switch to standby filter with engine running (Procedure 13145-1) 9)
Lube oil filter diff, pressure increasing a)
In-service filter clogging b)
Can switch to standby filter with engine running (Procedure 13145-1) 10)
Turbocharger oil pressures decreasing a) Lube ol' filter clogged b)
Lube oil strainer clogged c)
Lube oil pressure reg. f ailing open d)
Engine-driven tube oil pump malfunction e)
Low lube oil sump level Also, short-term, turbocharger prelube valve left open Objective 21 ends SOER 83.001 ends ADNORMAL OPEPATIONS 1.
Loss of Control Air Pressure a.
Running DG continues to run b.
Cannot be shut down by normal means, hince fuel rack shutdown cylinder will not extend and air dampers will not close c.
Loss of engine protection 2.
Low Governor 011 Level IEN 06.07 Objective 17 4.
Probable engine overspeed and trip b.
Uncontrollable engine speed c.
This occurred at Grand Gulf nuclear station, causing internal engine damage.
Maintenance had been performed on the governor, and it was incorrectly vented when reinstall ed.
In their case, the 30
__m.
_. _. - _ _ _ _ _. _ _. _ _ _ _ _. _ _ _. _. _ _ _ _ _. ~. _. _ _. _ _. _ _
NL-LP-!!204-00-C 111. LESSON OUTLINE:
NOTES i
overspeed trip device was incorrectly i
adjusted. On engine startup, the engine oversped several seconds IX4AK01-443-4 d.
Our DG was modified, with a second over-
[
speed air vent valve, so combustion al-dampers respond quicker 3.
Transf erring LRS a.
On PDG1/3 b.
If parallel with RAT and LRS transferred to LOCAL 1)
Governor and voltage regulator taken out of DROOP, to UNIT 2)
Governor will now sense for speed 3)
Any dif f erence in speed (detected) signal and setting of speed-set potentiometer will be detected 4)
Governor will try to make up for the error signal, taking on a large load, and tripping on overcurrent 4.
Prolonged Operations a.
DG should not be operated f or prolonged periods at less than 30% power b.
DG should be loaded to at least 50% f or two hours every 24 during low or no-load operation 5.
Failure of-Class 1E Eafety-Related Switchgear Begin IEN 03.050 Circuit Breakers to close on demand (Refer to IEN 83-50, August 1, 19G3) a.
Failures attributed to a problem within the circuit breakers closing control circuitry located inside the breaker cubicle P
b.
Typical causes f or f ailures include 1)
Blown control circuit fuses 2)
Intermittent electrical connections 31 Dirty or corroded contacts i
- 4) Malfunctions in the spring charging
..i'.
31
......a -
u.
NL-LP-11204-00-C Ill.
LESSON OUTLINE:
NOTES motors or associated spring position switch contacts c.
Nearly 25% of tabulated events involve diesel generatnr cutput breakers 1)
Due to more permissive interlocks associated with the closing circuit of these breakers - reason for relatively high percentatie of occurrences d.
Important f or breahrn to be checked f requently f or proper status, i.e., control power, spring charge, etc.
End IEN 03.050
SUMMARY
A.
Review t.nason Plan Objectives for Summary
.n N
32
o LESSON OBJECTIVES
( REPLACE TI-ilS PAGE WITH TI-lE LATEST REVISION Ol' TI-IE LESSON OBJECTIVES)
?
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T%TR GENEPATIQi DEPARINDTP N ELECIRIC GDIERATDC Pl#Nr
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'1T11E:
RESPOND TO IMEIGENCY DIESEL NUMBER: N1r IU-11205-009-01-C GDIERAIDR "MISCELLAND.XJS" AINM9
- ~.
P!t% DAM:
CUTSIDE AREA OPERAIOR REVISIQi:
1 N,1ITOR:
G. D. STQiE DATE:
7/31/89
?
APIPOVED:
-A DATE:
b
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,CNf RE6T MiiCES:
E90CEDJRE 17035-1, ANNUNCIATOR RESIONSE PROCEDURES (RW 4) s l $'
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NIeIU-11205409-01-C; Respcx1d to Diesel Cererator Hiscellaneous Alans I
IEPJDRiAlt!Gi ortTEcrIVE Given a directive fIun the control tu2a, Insponi to diesel gernrator miscellaneous alarns.
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'Ibc alarm rust be acknowlaigcd and its validity determined. The condition causi.rg the alarm nist be investigatal and, if pcssible, corra:tive actions
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taken. All cxrrunication ui activities rust be perforrut in acconianoa I
with current, apptwed procedun:s.
1LWt'&TIW The diesel ganerator niscellanecus alaIns on the annunciator panel at the ergine contml parnl also appear on the diesel generator annurciator panel in the control tuan. These alarns are:
1.
DGIA TRIP HIG1 "T24P DGINE BFC 2.
CG1A TRIP HI CFR GCASE FMESS 3.
CG1A VIDPATICH TRIP 1
4.
DL;1A 'IRIP OVERSITID 5.
DG1A IfW PRES 5 CI2Ti10L AIR 6.
D31A HIGi PRESS SIARTIlG AIR 7.
DGlA FAIIED 'IO STAFT 8.
D31A SWI1UI ICT IN AUID 9.
EG1A ERRRI1G DEVICE DGtGED 10.
DG1A PMEL INITUSIOl 11.
DGlA HI TEMP PMEL 12.
D31A D4ERGDr3 START 13.
DGlA DUDE QTTL IUG A FAIILHE 14.
DGIA UGINE OfrL IUER B FAIILTE 15.
DG1A ICCAL MN K IHR FAIIIIRE Upon receipt of any one of these alarms, the control tu2n cperator will direct the Om to perfom local actions in accortree with Plant Vogtle ARP 17035-1 (17038-1 for DG1B).
hhen respcrdirg to any ane of these alarms:
1.
Icknowletkyo the alarm. This will ircitdo depressirg the SIIHK'E push button to cilience the alarm horn. Notice snich arnlurciator vi.h is flashirg.
Ibr utltiple alarra, it is a gocd operatirg practice to mke a note all alatu windcw that are flashirg before pressirq the ACNORFDGE butten on the ergine control panel.
2.
Investigate the alarm as directed by the control ru.rn operator. Owck local iniications that may help in deteridning the cause of the alarm.
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4 NieIU-ll205-009-Ol-C; Res[rard to Diesel Generator Mismllarwxos Alams 3.
Take correct.ive acticos as direc*.ni by the contrV1 Ituu operator to restore the diesel generator to norml operating curditions.
The alam rust to ret att er the condition causity the alam Fas been cornetai.
4.
Ing the act!vity.
Acr/ rE1A TTUP HIGI TD{P DUINE BRG 7his alarm occurs at 2280 F.
If the diesel generator has been startcd frun a norml start, it will trip.
This alarm could be caused by high taperature of the lubrication cil, Icas of lube oil prwssure, the failure of a min ergire bearing, or an ergire overlcad. This trip will tot self-reset because the detectors have fusible rods wnich begin to mit at 228 degrees F and nust then be replaced. The DG will still start in an emrgency, howver.
hiTt2dsKh9_tbtalNL Ackro. ledge the alam by deptwairy the ACnKMIEEGE puhtutton on the the ergine control panel.
Silcom the alana horn by depress.iry the SILHE pushbutton.
Illysticate the aloth Check the lube oil out tempu~ature by setting the thermxouple solector to ID CtJr ard tuadify the Doric Trerdicator.
tbnitor the annunciator panel for other alarm that my be illuminattd, irdicatirg the cause of this alarm.
List 2n for abnorral noises irdicatirg a failuru of a min engine bearinJ.
If the diesel generator is still runnirn (i.e., had been emargency startad), continn11y monitor the tenperaturn and inform the control team i
operator of the torperature status. The control roam operator may decide l
to shut dcWn the d.iesel generator if it had been emergen'./ started, deperdent upon your investigation.
i Take cgrm;t;itm action.
Check the oil le.'el in the lube oil sum.
If the level is low, notify the control recu cperator, who will direct Maintenance peraonnel tb add oil.
If the ' lube oil taperature is high, ensure proper cperation of jacket water and NSCW to the jacket water heat exchargar.
Check for prtper operation of the Inbe Oil System.
If the IDbo 011 System is not operating properly, check for other alams, such as incrvesing taparatures, low oil level, or differential pressure across the lube oil strainers or filteIs.
If this alarm cores in after other diesel gerwrator lube oil alarms, correct the lube oil alam first.
If there is a malfunction in the Inbe oil System, the situation will clear when the Lubo 011 System m1turrtion is cortucted.
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NL-1U-11205-009-01-C; Pespond to Diesel Generator Miscellaneous Alarrn Stay clear of the sides of the engine, siroe a imariry, if hot errugh, can cause ignition of oil vaporu in the crankcase.
If the Inbe 011. System is operatiry prgerly ard to other alarm have activated, this alern could be due to the hihire of one of the orgirwi unin' hearings.
Notify the ccntrol rorzu cperator of equigent status.
- 1he cordition causirg the alarm will be corrected by thintemnoe.
Igj_Mie activith Lcq the activity in the cparator's log.
A08 CG1A TRIP KI CF0WKCASE FM:SS
'Ihis alarm occurs at 3 psi crankcase pressure and can be cand by extrrrely excessive wear of the piston ard cylirder liters that allcws otabustible gases to pressurize the crankcase, the crankcase fans not cperatirg, a crankcara explosion due to vapors ignitad bf a hot spat in the crankcam, or a plug in the crankcase vent lire to the atacqhere.
Upon receipt of this alarm, the diesel generator will trip unless it has been amrgency started, at which tim it wmld annunciate the alarm.
bGhDWlEbfLthC_aliLIL
'1his vill include depressity the SIID4CE pushh2tton to silence the alarm horn.
21ote which annunciator wirdcw is flashi29 Check for nultiple alarms.
Investierate hinIm Verify the crankcace pressure frca the crankcase pressure marxreter (1-PI-19184) at the etnine control panel. If an actual crank::ase explosion coeurred, the water may have been blown from the manxcter. Check tM crankcase fan breakers en INYI to ensure that they aru CH.
Determine if the area appears smoky.
Take corrective actiqh Notify the centrol room operater of the investigation.
Reset the breakers for crankcase fans, if tripped. 'Ihe control roca cperator wil.1 direct hintenarca perscmal to investigate otNr causes of tho trip.
If the atresphere in the diesel generator recxn alrears very smky, the centrol rcm operater will direct safety personrel to test tM atmosphere because high crankcase pressuru my cause explosive gases to acc.mulate in the diesel gererator recn.
Care the cordition causing the alarm has been corrected, ruset the alarm.
Ira the actaylt;ya Irq the activity in the operator's Icy.
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NIrIU-ll205-009-01-C; Respons to Diesel Gererator Miscallarnous Alams A09 DGIA VIIERATION 'ITtIP This alam will. occur if exocssive vibration is detected at the dienel ergire or turix%r and irrlicates potential uchanical ptablem with the r:ovity parts of the diesel ergirn.
Upon receipt of this alam, the dieeel ergine will automatically shut down when cperatiry frun a norml start. On an emergercy start, tM alarm will annurciato tut the diesel will not trip.
b2D2Wifdle_thtaMIL
'Ihis will irclude depmssirq the SIl?2 ICE pish button to silencu the alam hom. Note which annurciator wirdow is flashing.
Inym?ds;tto the filarW If the diesel engine is still runtt!rg, check the ergine for unustal noisen or vibrations. Unusual noises :tay be difficult to detect as scano noises wvi vibrations are norml for an cryine of this size.
Take corrw-tive actin Notify the ountrol tuan operator of any unusual toises or vibrations. 'lha control rton cperator will direct Mainterarce perscrnal to inwestigate tM alam. Roset the alam when the cause (;f the vibration Ms been cortw:ted.
Im the a tivity.
Ing the activity in the cperator's log.
AlO CGlA'IRIP OVERSPEED
'Ihis alam occurs when the diesel ergine speed reachen 517.5 rpm.
'Ihis chculd twver occur unless the cpvernor ralfuretions.
'Ihis alam will always result in a signal beiry gererated to trip the diesal ergine regartiless of hw it was started.
If the diecel ergine tripped at a speed beyard the design setpoint, the trip could cause internal damge to the diesel engine.
s Adacn/1* the alamt
'Ihis will irclude deprt;ssing the SILDICE pish buttcn to silence the alarm horn. Nota whidt anrurciatr'r window is flashirq.
Itwesticrats the alhJ h If ptwent when an cwrspeed occurs ard the apprudlnate speed that was reached prior to the agins tripping is c6mrved, inform the control ruan operator. Ctserve tha governor for oil leaks, nomal oil level, or any loose linkage to the *ual racks.
Infom the control ruxa operator of the governor's physical appearance.
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NLe7U-ll205-009-01-C; hpcid to Diecel Generator Miscellanocus Alarms Take corrwet.iyAmtigli The control rucia cparator will direct Mainterance personrel to investigate the dioce) orgine crverspeed, Upon direction fitan the control item operator ard wnen the condition causity the alarm has been corrected, tuset the 3
overspoed trip device (located at the front of the diesel orgine ard to the right of the goverror).
Raset the device by depressify dcun on the-two latenes until they latch aM hold.
When the ovarupmd trip device is reset, press the emergency trip reset pushbutton on the ergine conttul panel (when di1W) then reset the alam.
Ioy the activity.
Irg che activity in the cperator's leg.
t F01 DGIA LOW WESS OTTITOL AIR
'Ihe control. air rtior, of the diesel air system is tapped off of the startirg air en the diesel generator, atter the stininers ard before the soleroid air-operated start valve.
The Startiry Air Systna la regulated to maintain apptwimately 60 psig control air pressure.
This alam will amear if the contrul' air pressure decreases to aproximately 55 psig or less. 'Ihe poss21e causes for this alam irclude: the failure of the etntrol air pressure regulator, a leak in the Control Air System, or-the strting air being isolated frun the diesel ergine, icw starting air pressure or failure of control air pressure switch 1-PSIr19174.
Acknowleche th3 alam.
Depress the SIIBKE push buttro to silence the alam horn.
Note wrtich annunciator window is flashing.
Investiaate the alam.
. Verify the Icw control air pressure at-the-engiae control panel. Check for the low pressure statting air alarm. If this alam has activated also, ard is 55_ psig or less, take corrective action to brirg the starting: air pressure back to normal.. O>ck the Control Air Systai for leaks..A leak in the OxTtrol Air Systen should be easily detected aniibly, if the diesel generator is shut down. Look in the back of the argine cartrol panel ard
-listen for any air leaks. Usirg a flashlight, cbserve the small air lines arcard the-diesel arigine to dctermine if any nroken lines are causing a leak.
A shut'le valve allows control air to be provided by either receiver, c
unlees the receivers are isolated.
If the starting air pmssure is norml ard them aru no leaks, but the Icw pressure still Iwains, this indicates a mlfunctica of the control air pressure regulator located in the back of the ergine control panel. Inform the contzel rrmm operator of all firdirgs.
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NicIU-11205-009-01-C; Respond to Diesel Germrator Miscellanents Alarms IQ;p_qorrective action.
Upon direction frun the control room operator, perio. n actions to rcgain control air pressure. Either restors the starting air pressure to norml or Maintemnae persmnel may be requinxi to repair any leaks or replace air pressure regulators.
After repairs have been performed to restore the control air pressure, reset the alam, NctrE: Adequata control air pressure mst be mintained for diesel
_ generator trip capability.
Ip2 the activity.
Iog the activity in the operator's log.
M3 DG1A HIGt IRESS STARTEG AIR
'Ihis alarm occurs when the starting air pressure increases to 260 psig.
'Ibe possible cause for this alarm is the failure of the air outpressor n
pressure svitches to rhut off the air cacpressor. This' alam is ccmon for both air ccopressors.
Acknowlg@rp the alam.
'Ihis will include depressirg the SIIDICE push button to silence the alann horn. Note which annunciator window is flasttirq.
Investicate the al m Check the starting air pressure gatge (1-PI-9052 and 9056) cm the engine control panel and locally (1-PI-9060 and 9064) at the air receivers to determirm which of-the two starting air conpressors caused the alam. 'Ibe receiver pressurized to 260 psig caused the alarm.
p Take correcti w action.
If the affected startirq air capressor is.still running and upcn direction from the: control room operator, stop the air capassor by_ placing its handswitch to the SIOP positico at MCC INBI. Depr = nwize the affected air start receiver until the alam can t:e _ reset or until the air pressure is down to approximtaly 250 psig.
'ntis can bo tne by cracking cpen the receiver bicu$cwn valve, contjnuously nonitor the startirq air systan that s
was shut down and notli*y the control roan cperator of systan status.
Restart the air cwp-,r if the pressure decreases to approxjaately 225 psig and stop it Wue1 the air pressure -is approximately 250 poig.
'Ibe centrol rocsa cperator will direct Maintenarce personrnt to check and repair the starting air ccupreamor pressure switch if necessary. When the repairs have been ccepleted, place the air ccrpressor control switch back in the t,
- AUID positim, ensure that the alam clears, and reset the alam, Ia1 the act;.vitv.
Ing the act:.vity in the operator's Icg.
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tru-IU-11205-009-01-C; Respond to Diesel Gerwrator Mismilarcous Alarm 3 F05 IM1A FAllDRE TO STARI' 1his alann will occur if the diesel engino fails to rnach 200 rpn within five socords after receivirq a start sigml.
hsible causes for this alarm irclude a mlfuretion of the Ibel 011 Systm, the Startire Air Systs, or the Electro-Preumtic Control System.
Acknowlthe tM alarm.
1his will inclucie deprm.sirg the SIIDCE Inshtxitton to silence the alann he:m. Note which anrurciator window is flashirg.
Investicntq_thq.alnIm cieck for other associated alarms that my have causd Utis alano.
I'nsure r.cm.1 level in the fuel oil day tank. Usirn a flashlight, trace the dlignment of the Starting Air Svsts frm the hlr receivers to the diesel engine ard trace the hl 011 System fran the day tank to tM diesel e2nine checkiry for misalignal valves or l.a.aks.
A ccmon cattse !s misalignment of the valve fIm the day tar'l to the ergino (1-2403-U4-031).
Also, verify startirg air pnwa.tre is norml ard the rtooiven are not isolated.
Take corn stiye action.
Notify the control tun operator of all firdirgs.
Correct any misaligruents as directed.
When the cordition causiry tho alarm has been corrected, reset the alarm.
The contxol roam operator may attexpt a restart after the cause has been corrected. A rcrmal tv. start attexpt is inhibited for about 90 seconds.
Ica the activ.i h Irg the activity in the operator's log.
E06 tr1A SWIIUI ICI' IN N1IO
'Ihis alarm occaru shen one of several diecei generator u.4hul switdies is not in ADIO (or switchs.1 to OFF).
6GhDW.12%W thC..alEIL Ackrowledge the alarm on the ergine panel.
Investicate the alarm.
The alarm oculd have bre caused by the mispccititxtirg of any of the followiry hardswitches; a.
Dici oil transfer pung 001 or 002 (ctxitrol roca switches) or at the diesel generator rem:
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NIrIU-11205-009-01 C; Pr. parti to Diesel Gererator Miscellanoatis Alants a.
Afteroroler 1 or 2 b.
Air ccrprem.or 1 or 2 c,
lubo oil kocpwann pmp d.
Lute oil koorvann heater e.
Jacket water hwptann prp f.
Jacket water koi p. heater g.
Cenerator spice iv. uter Cetennine if a;1y of the above switches are out of Feition and if tag-outs or maintenm:e is boirq dcnc on tM affectal system. 'Ihe Icos of the lube oil ktquann ptrp affccts ergire cparability, hke correst_ive actignh Ibset the affected handswitch after directed by the lioersed cperator.
L.zLthe activltv-Icg the activity in the cpenr;or's log.
F07 DG1A BARRDU DEVICE DGGD 2GhYElEha tb2 alan
%is will include depressirg the SIIR4CE push button to silence the alam horn. Note which arwnciator wirdcw is flashirg.
Investicrate the ala n
'Ihin alann occuns Quen the barrirn device has toen e.rgagal to prevent cparation of the diesel generator during nuintetance.
'Ihe alarm in expected whea barrirn is.in process.
Ta)e cerrw:tive aqtia Retum the er.gine to OPERATIONAL and reset the alarm when karrirq ls acg.lete.
Igg.the activity.
Icg the activity in the cperator's Icg.
s IVS DG1A PANEL INIREION
'Ihis alann ocntrs when the ergire control paml door is open.
6:knculchthe a1%
'Ihis will imlude dr.pmssity the SIIDG push button to silerrxs the alunn horn.
Investicate the alarm.
De*h why the ergine control parel dcor is cym.
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NIeIU-11205-009-01-c; Pespond to Diesel Comrator Miscellaneous Ahum Thko cotlegirtagtin Notify the cu'. trol roan cycrator of your firdirgs.
Close the pinel door and remt the alam, ifELthtagtiMi.th Icg the activity in the crerator's Icq.
ID) [G1A HI TDiP PAtEL This alanu occurs when the teqcraturu insida the ergim control panel reaches 1300 P.
The possible causes for this *lann include cuerheating of the contrul circuitry in the ergim control panel or high temperature detected in the diesel gemrator roan.. Tko ackiitional sources of heat in the engine control panal art the interior light ard the 250 watt strip
- heatar, hghnowledae the alarm.
' Ibis will include depressing the SIIDE push button to silence the alann horn.
Im2Et191tcMa_ clam, meck for high tenparature in the diessl canarator recru by checking the HVAC controllers in the diesel gererator roatn.
Feel the ergino control panel frun the cutside for excessive heat.
Icck for snaka aruni the ergine control panal. Open the door to check for smiderirg.
If possible and can be done safely, place year hand a fev inches from tM strip heater to detennine if excessive heat is Indiating frun it.
The strip heater is tornely onurgized baiow 1000 F.
Take corrgtdys_ g tj n If the high tecperature is in the diesel gerarator rrxtu, check the alignment-and operaticn of the HWC System.
If sanka or fiIn occurs, notify the contrul roan op6rator ard stard by to assist the firn brigade.
Check for adequate ventilation of the engim control parel ard (G Ican.
The non-ESF fan should start above 85 degrees F. (with the emine not runnirg),
s Iccr the3gtivity.
Lcq the activity in the operator's lag.
F10 DGlA DG3GDC LTARI' This alarm is e@ected wtwn the diesel generator has been started frun a safety injection signal or frun a :nanual trnamercy start.
Only four 9-9 I
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NIeIU-ll205-009-01-C; Respond to Diesel Generator Miscellaneous Alams autcmtic trips will be embled-when the diesel is running urr.lcr an emrtjercy start. 'Ihese trips are:
a.
Inw presuru lube oil trip b.
High jacket water tarperature trip
.c.
Engine overspxd trip d.
Generator differential trip Jg:knowlectie the.ilarg If this alam occurs, the diesel generator has started. Ackrosledge the alam.
Investimste the alam.
This alam does not inilcate a malfunction to be investigated, unless it started for no a; parent Imson.
If the start occurred by itralf, with no safety injection tw,trring, start may have been due to a broken or loose breakglass.
Personnel will be aware if the local emergency start was intentiend.
Take huctive actlen.
'Ihe ocntrol roca cparator will direct the OAO to verify the blue "zmdy to lead" light illuminates.
Refer to Procedure 13145-1, "Dimel Generator Operation Urde" ITA
. Ocrxlitions," and manitor the listed paraneters.
Im the activity.
Icg the activity in the qmrator's log.
B08 DG1A DCDIE CNIL ECWER A FAIIIJRE ihit; alam octr.ru on a loss of 123V DC supplied to the engine control panel (braaker 1-AD11-ll on panel 1-AD11' tripped), control power breakers CB 2 (gatged) on the frtmt of the engine's. control panel are tripped, or a loss of cxmtrol-air pressure.
ICIE: Control air pgmaatre nust be maintained for diecel ' generator trip capability.
Control power A is used for rarveral engine starting functicos, such. as field flashing and cpenirq two starting air admission valves. Its starting functicos are redundant to the B power circuits. 'Ibe A antrol power circuit also powers several generator-related (ard other) alam circuits.
Ackrowleche the alarm.
i 9-10 i
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NIrIU-11205-009-01-Cr Regrrd to Diesel Generator tiiJcellaneous Alarm This will irritde depressire the SIIDCE push button to silence the alarm horn.
10Y!:stiGatfl.29_alADh On the cryino control prel, check, the white light above the A pcdr circuit nreakers. The light is rormlly lit, ard the cirmit bmder is rurmally cdocal.
If the light in n,t lit and CB 1-2 is still clo&d, the problem my te further ugtream (electrically) with the trip of breder 1-AD-11-11 at paml 1-AD-11. Also check for nomil control air pressum (60 psig).
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Take corrective action.
y Reclose the breaker (s) or restore control air (as applicable).
IaL2tt_gtivitv.
Iog tne activity in the eparator's Icg.
S 809 DG1A DGINE OfrL PCfdER B FAILUBE This alarm cccurs on a loss of 125V DC supplied to the ergire control panel (brukar 1-AD-12-11 on pinel 1-AD-12 tripped), the control pcar bmters CB 3-4 on the left front of the ergine control. panel trippai, or a 1cus of control air pressure.
tCIE: Control air pmssure mst be mintained for diesel generator trip capability.
Control pomr B is used for several ergine startiry furrtions such as field flashing of the gererator ard cpenity two startirg air admission valves.
Its startirq functicn is redurdant to that of the A powr 125V DC cirr.uits, and the diesel generator SIOP cixulits. The electrical portions of the
. iry circuits are ftun B pcNer only. Do not ocnfuse this with B or A a
tra
. Each diesel generator has an A, B, ard C 125V DC control power circuit.
With B circuit 125V DC not available, the diesel generator is still capable of beirq started (frun the A circuit) hit cannot be stcpped using electric circuits (includirg protective generator trips ard an emergency st@).
hleche the alarm This will include depressiry the SILENCE pmh button to silence the alam Mm.
Invest:mte the alam.
When cLspatched by the control room operatcr, check the breaker 1-AD-12-11 (on 1-AD-12). It is nomally cicad.
9-11
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NIelU-11903-009-01-C; Paspond to Diesel Generator Miscellaneous Alarm Check brukers CB 3-4 (gatged) on the engine control panel. They aru norm 11y closcd ard its Mute B power irrheatirn light is lit. Also enmare control air system pressure is rorml.
I&Acorrective actin.
Reset the applicable tripped ci2u11t breaker ard notify the control rom 4
cperator. If the breaker (s) will not c:tay reset ard the control rom operator directs, shut ck'v. n the diesel generator by p.tshirs in the p2sh-to-step / pull-to-run switch on the front of the cryine skid after a rorm] start, It can still restart cri a start signal. If. the diesel generator had been started urder an emergency start or it it is desirable to help prevent a restart, manually actuate the crerspeed trip device.
Ioa the actlylt;ya Irg the activity in the operator's log.
E09 DG1A LOCAL ANN FNL EWR FAIIURE This alarm is en the control rom arninciator light board, but involves responses from the OAO.
The diesal generator arnmciator power supply is powered by 125V DC. The power supply, in turn, provides-24V DC for use by the annunciator systems.
9 DG1A annunciator power mqply receives its 125V DC frra patul 1-NI)-31, breaker 07, through the C power supply breakers, CB 5 and-6 en the engite control panel, and throu@t breakers CB 9 and 10 inside the ergine control panel.
With the -Iccal panel de-energized, all other diesel generator control rom annunciators are inoperable.
Without this alam to alert the control roca operator, alarm conditicns could exist without annunciating in the control room.
Acknowleinq_,the alam.
Acknowledge any directive frta the control room.
Ity_esticate the alam.-
The control roca cperator vill dispatch you to check the breakers, reset tnem, and c. heck that the annunciator power supply in the bottom of the panel is en.
-Take correc.tive action...
Allow directives from the control recn to correct any conditions causirg the alarm.
p Ica the activity.
l-Log the activity in the cperator's icq.
9-12
NIrIU-ll205-009-01-c; Reqord to Diecol Cenerator Mirallaneous Alarns DTIDEtWICD GLTDC Follcv these steps to investigate miscellaneous diesel generator alarr.s.
Ackncwleck e the alarm.
1.
J 2.
Irwestigate the alam.
3.
Take corrective action.
4.
log the activity.
s, d
4 g.
4 g.13 s
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NL-IU-11205-009-01-C; Respond to Diesel Geterator Miscellmcus Alams SEIE-TFVI Before procoodirg to the Task Practim, answer the follcuirg quwtions.
l.
DGIA FAIUJRE TO STMC alam occurs when 2.
There are four autcautic trips that exist sten the diesel ergim is runnirg urder energency start, hhat are they?
a.
b.
c.
d.
3.
Men DGlA TRIP OVERSPEED alarm occurs, _ it will result in a sigml being generated to trip the diesel ergine, ttganiless of how it was startxd.
a.
7tue b.
Palse N
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e NIrIU-11205-009-01-C; Pecpord to Diesel Generator Mit.cellarwxus Alarm RWnIIS 1.
the diesel generator failed to start 5 secortis after receiviry a statt signd 2.
a.
Icw pinsure lube oil b.
high jacket water terparature t
m3 na overupcxd c.
d.
generator diffetwitial 3.
a.
True w
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s NIrIU-11205-009-01-C; Respord to Diesel Generator Miscellanecus Alarm T6SE.IPACTICE Defore pruxeding to the Ewrformance Test, cmplete the followiry Task Practica exercise (s).
1.
Peview Procedures 17035-1 ard 17038-1.
IM sure that you urderstand all precautions, liraitations, and steps associated with resporx11ng to DG miscellaneous alarm.
2.
Take this instructicrial unit and Prrxxxhlres 17035-1 and 17038-1 to the diesel generator tuildirn.
De sure that you can locato all local cxrpanents arx2 instrumerttation associated with req;ordirq to DG miscellarwous alarm.
3.
In the diesel gemrator buildi19. walk thrti.sgh the task of res;xxxiiry to DG miscellarwxus alarm.
L paiblo, hve a fellow trairen evaluate your perfortance using Prv xx$nw 17035-1 and 17038-1 ard this instructioral unit.
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NLi-IU-11205-009-01-c; Respord to Diesel Generator MiscellanLuis Alarm EDD(BCK O[4 TASK WACTICE 1.
If you have any questions abcut the ptrcautions, limitations, or' steps in Prrcodures 17035-1 ard 17038-1, ask ycur instructor.
2.
You should have been able to locate all local cu:gs 2nts an1.
instnmentation associated with tu: rniing to DG miscellanecas alarm.
T If you had any difficulty, ask your instructor for help.
3.
You should have walked thrux3h the steps rvacessary to respord to CG miscellaneous alatws.
If you had any difficulty, re-read the pertinent ca.tions of this instructioral unit ard the proacdure.
Resolve any questions with your instructor.
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,. V EURER GDIERATIOt1 DEPARDE2fr
\\0GTIZ EIICTRIC GDIERATDJG PINTT DISTPUCTICt1AL Ul11T TITLE:
RGKtfD 10 D4ER22Cl DIESEL NUMBER: NicIU-11205-008-01-C GDIERATOR GDiERATOR ALAFMS PIOGRN4:
OUTSIDE AREA OPERA 70R REVISICti:
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ALT OR:
G. D. ErIONE IATE:
7/31/89 b
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REFERDiCE:
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\\0GITE ITOCEDURE 17035-1, N21UNCIATOR RESP 7EE PROCEEURES (RD/ 4)
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e NIr IU-11205-009-01-Ci Pespond to Diesel Geterator Conerator" Alarus PERF0F@WJCE DIUECTIVE Given that a generator alam on the cryine ccotrol panel has annunciated, '
respond to the diesel generator GENERATOR alann.
The alam cust be acknowicdged. The cortiition causirq the alam tust be investigatal and, if possible, con:uctive actions taken.
hhere possible, the diesel generator nust be r* turned to nonal operating conditions. All comunication and activities ist be perfonwxi in accortlance with current, approved precedures.
INFORMATION The alams associatal with the generator portion of the diesel generator azu located on ALB35.-(AIB38) and are as follcus:
CGIA (B) GDEPAIOR TB00BE WINDOW E1 DGIA (B)
IDW-VOLTAGE WD11XM E2 DGIA (B) HIGi 'IDIP GDI OfIL WL WINDOW E3 DG1A (B)
IDW EXCITATION WDJIIM E4 DGIA (B) TRIP GENERATOR FAULT WHIDCW E6
[G1A (B) TRIP GIN DlTF WDiDOW E7 DG1A (B) - HIG{ TD@ GEN BFARUGS WINDOW E8 DGIA (B) GDERA70R UNMR IT20UDC WINDOW D6
!CTE:-
DGIA (B) DISARTm GDI QTIL POWER FAIIIEE, AND DGlA (B) DISABIED lOI-RESCP OF DERGDC TRIP are covered in another instructional unit.
- E01 DGlA GDERATOR 'IBOUSE ACROffNP ' hie AIAHM Acknowle& e the alam conditica by depressing the AQ@0WLEDGE buttcs1 on the J
diesel generator. panel.
The DGIA GDEPATOR.IBOUBIE alam is located in window E01 en the armuriator panel. -
4 numrIGATE 'nlE AIARM
- The control rrxan cparator will-dispatch the OAO to detemine the truuble--
with the diesel generator. The generator trouble alam responds to same-of the same diemal: generator relays that the DG trip generator fault alam responds to, but the generator trcuble alam does not nemaarily mean-a trip of the diesel generator has cccurred.
At the generator control panel, check the three lockcut relay harxiles (186A, B arri C) and report to the control roam imediataly if any one is in the tripped positicri, or if the rei light atxwe any of the 186 lockouts is 8-1
.m.
C NL-IU-11205-008-01-C; Respond to Diesel Generator " Generator" Alma
- nt lit. Check each of the diesel generator relays for targets.
Tugets are orange /rud - indicators and are visible if the relay picks up. Wport firdirgs to the control Ivxa.
'Ibe relays which can cause thn alarm are auxiliary (X) relays actuatdd by the followirg primry relays:
132 Reverse 1%er Relay 140 Insa of Excitation (field) 146 Negative-Ihase Sequence Relay 151V/A Voltage Restrained overntrrent (OC) Relay 151V/B Voltago Restrained Overcurrent (OC) Relay 151V/C Voltage Restrained Overuirrent (OC) Relay 151N Neutral Grourd OvercurInnt Relay 159 Generator Ns CNervoltage Relay (alarm only) 160 Potential Transforrers (PT) Failure Relay (alarm only) 164L Generator Field Ground Relay (alarm only) 181 thderfrequency 127 Urdervoltage
. On the primry Islay for the above functions, a target will appear shr-'ing that the relay has " picked up" when it detected the cordition flhe diesel o
generator and its relays do not respord in the same mnner for_ all-relays,
'Ibe response of each depends on che corditions urder which the diesel generator was started, i.e.,
emergercy start or normal start situation.
This can affect whether the diesel generator continues to run or not.
'Ibe three lockcut relays en thu generator control panel each have a TRIP and a RESFIT positicx1.
1.
186A locko.it relay -will trip when a' diesel generator differential relay picks up. _ 'Ihis is further explained in the discussion of the
'IRIP GEN DIFF alarm.
2.
1868 lockout relay will trip when the'140-loss of excitation relay
- picks up; 151V/A,-B, or C-voltage restrained overt:urrent (OC) relays for each phase relay picks +p; 151N picks up on an overcurrent at the neutral. lead of the generator; 160. indicates a failure of a potential transformer (PT).
'3.
186C _ lockout _ relay will trip while the engine is runnify _ on a ' 132 ruverse power, or 146 negative phase mjuence.
TAFE wxKtLT2NE ACTI{Rf Make rute of primary relays ard lockout Inlays ravirg targets showing.
Report - findirgs to the control' rocm operator.
Roset the relays when directed by the control roca operator.
'1he control roca operator may be
[
aware of what caused the relays to pick up.
l.
1.
Press relay target reset pushbutton on the generator contrul_ panel.
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7 NIe-IU-11205-008-01-Cf :t ;xsd to Diesel Generator " Generator" Alarms r
IKrla Never rec.ct a relay-target or lockout relay until directtd to do so. Shift Supervisor (or hi>gher) approval is required.
2, To ruset the orange target irdicator on the primary relay, press up on the push red on the front of the primry relay panel, the put rud is usually 1ccated on the lower left side.
3.
hirn the hanile on the lockout relay to the RESLT pmition ard quickly release it.. Itw red monitor light illuntinates. Quickly release the harrile. Never hold the handle in the reset position. Etramicate with the contrul rom operator Mille you are resettirg the nuP-RESET hanile on the 1cckout relay. If it trips again, report the re-trip and await further instructions.
P 4.
REET the annunciator alarm.
IOG 'IME ACI'IVITY The activity Dust be logged in the diesel generator log book. This must be done after the cause of the alarm is detemined ard action is taken to correct the c::odition causmg the alam.
E02 CG1A ICW VOIlDE t-ACENOWIM THE AINN Acknowledge the alarm candition by depressity the ACKlWIIDGE button on the diesel generator panel.
'the CG1A IfW VOLTAGE alam is 1ccated in window E02 on the annunciator panel.
INVEFUQhTE 'INE AIRM
- Ihe control room operatur will direct the OAO to ciwck' local instrumentation at the generator cantrol panel and determine the cause.
nhamwe the reading on the field V meter on the generator ContrD1 panel, whitti has a scale of 0-150 DC and a field annster of 0-500 anps. - Also, locally check bus voltage using a bus V meter and selecting Itase A-B, B-C, ard C-A voltages. Beput the voltages to the control. room operator. The readirgs'should agree in both places, w
Remain in constant mammication with the control recun operator for additional specific instructions.
TAKE dw<wnVE ACTION-
-Initial cxwcive acticn _ will be taken primarily by the contrul rom operator, since it involves adjusting the voltage frta the control rum.
Specific corrective actions may be direxed by the control room operator.
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NIrlV-11205-006-01-Q Respond to Diesel Generator " Generator" Alarms should the control rva operator rot be able to restore voltage, and the diesel generator is supplylig load due to a loss-of-offsite pcwer, the OAO will to directed to transfer to the nanual voltage ttgulator (per Pttoedure
-13145-1). Renain in constant ocumunication with the 10 Vrdle perfoming the following:
+
a.
Deptuss umargerry shutdown pishbattoit (1-lG '4474) on generator conttel panel.
b.
Verify the generator field volts are zero, c.
Place local /rumote switch 1-15-4516 to local, d.
Depress nanual voltage regulators pushbutton 1-1E-4495, e.
Verify manual voltage regulator light is on.
f.
Press exciter enable pushhJtton 1-1G-4457.
g.
Press field flash punhbutton 1-1G-4459 for 3 to 5 socords.
h.
Adjust the generator voltage to 3750 to 4330 volts, usirg the voltage regulator raise-lower switch handle.
i.
Place the local / remote switch (1-HS-4516) to remote.
LOG 11E ACTIVITY Iog the activity in the diesel gercrator log book. 'Ihis nust be done after the cause of the alam is determined ard action is taken to correct the canditlan causirg t.'a alam.
E03 DG3A HIGH TENP GEN QEL RTL M'N 'llE_hWM Acknowledge the alarm cordition by depressirg the ACKNCMILIX:E button on the diesel generator panel. The DGlA HIGH TEMP GEN CEL IWL alarm is located in wirdow E03 on the annunciator panel.
INVESTIG6'IE '11E AINN This alarm is functional when the diesal generator is operating aid can be caused by the followirg conditions:
1.
cNerheating of e.s: citer cartponents.
- 2. _ rising temperature in the diesel generator rocn.
3.
loss of HVAC.
4.
failure of hit #1 temperatum switch 1 'IS-4774 Qwck for risirq tenparature in the diesel generator rtom b[cMcking tenperature at thermostats for INAC Iccated in the diesel-generator rocn. -
Feel the back of _ the generator control panel for higher than normal tartperaturn. Nation any unusual smell, such as burnirq Insulaticn.
Lock for smoke on or near the generator control panel. With the CG in standby, check that HVAc is operatirg correctly with the run-EEP fan running and danpers open if abcne 85 degrees F. Report any indication of smoke or fire i
to the control room hmiediately.
Report firdirgs to the control roca
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tilrIU-11205-008-01 Cl Paspxd to Diesel Generator "Gererator" Alanu ThFE$ Fmri'lYU_ACTIW Take.mwures to restore pitpc.r ventilation to the DG rocan, nrd to the gnnerator mntrol pvol.
In addition, follcu any other inctnetiens given by the wnttul tram cicrator.
Ensure that the dicsol gescrator roam INAC is cycratirq normily.
LCCc 11E.ACTJJTi Lcq the actavity in the dieral gemrator Icq book. This rmt bo dono after the cause of h alarm is detemined ard action is taken to corrtrt the candition causiry the alam.
004 D31A IDI EXClTATICil lQ242dLU;GE M Ali g Ackrr.ulcdge the adarm condition by deprussirq the A02KM112CE button on tho dlecol gercrator panel. The [nIA IDi EXC1 TAT 10ti alarm is lccated in wijdow E04 on the annurciator psnel, DNESTIGATE M AINE m
1hin alam cculd be caused by the follcwirn conditions:
L Problan with the exciter rtgulator The generator boirg cperated with a leadiry reactive [u.ur.
i alarm can occur due to ta, ting.
TAFI CDPPfriivgJ;3'Igf Follcw thr4 directives of the control rocun operator.
The situation is citared when the anrunciator light is no lorger ilhmtimted.
The crott'al rocn qscrator win ccka the corrtctions, by adjustify voltage.
1D3 ')lE_ACITV1TI tcg the activity in the diesel gercrator Icg boo't. This must be darc after the cause of the alarm is detenttincd ard actico la taken to currtet the m ndition causirn the alarm.
E06 DGIA 1 RIP GINERAltR FAULT 6CEL*;WLETGE TIE ALAJT 4 Acknowledga the alam candition by dcpresstry the A0001LTGE batton on the diesel gerentor panel. The IrlA TRIP CDIERATOR FNJLT alam is located in virrku E06 on the annunciator panel.
DIVPSTlfATE THE Af#ti This alam will appear when the 1960 or 186C trip ard lockout tulays have tripped.
186B will trip, causing the DG breaker to cien ard the DJ to shutdcun (ex pt durirn an SI) if any of the folicwiry relays pick up:
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NieIV-11205-008-01-C; Ra4xn1 to Diesel Gerwrator " Generator" Alan:s P
1.
Awa of field 140 relay, 2.
puso overturrent 151VA,151VD, ard 15Hr.
3.
Inutral grutrd enercurrent 151N.
180C will trip after a time delay if either of the follwirg cocurs:
- 1. -Pevem e power relay 132.
2.
tiagativa pmse sequence rolay 146.
The 186C will cause the DG outrut breaker to trip (but the emine continues to run), if the DG is runnirg ln parallal (as durirn testim). The ocntrol roam crerator will direct the OAO to locate the relays to the right of the generator cod.rci panel. Identify targets, rote Widi telays have targets showim, hrd report to the control rom operator khich 186 Icckrnt tulay trig ul.
TNT QiddA nVE ACTICtj The cmtrol toom operator thould perforn the rw-mq actions frern the control rtxm to correc.t the conditions caaning the alam. If the target is showirg on phase overcia rent relay, rud phase % B, ard C amters to detemine which pase had werturuznt. This will awly if the diesel is still ru nirs under enervercy startup conditions, i<cport fin 11rgs to the control room. Oroe the situation is corrected ard the 10 directs, react the relay target by:
- 1. prussing the relay target reset pushbutton.
- 2. lifting up on the rush red on the front of the relay paml.
- 3. rusettirg lockout relay B or C (only aftar being directed to do so).
- 4. resetting the anrurciator alarm.
Never hold 'an 86-type lockcAtt relay to the reent position. Tb do so can result in damage to the relay coll.
IDG 7tE gl'IVITY l
log the activity in the diesel generator log book. 'this at be d:ne af'er the cause of the alam is detentirwd arti action is taken to correct t!w corditim causfng the alam.
E07 TKIT GEN Dif7 ACXtKMID2 'DC ALWN Ackrowledge the alam condition by depressing the ACMIOftIDE button on the diesel generator panel. The DG1A TRIP CD1 DIIT alam is. located in _ window E')7_on the annunciator panel.
DNFETICahTE_11DLN,Ntf The prthble cause of this alam _ is any one or twre of three 187 diffenntial. relays sensirg differential current. A 187 relay is designed to be a sensitive. rulay that. protects the generator by causirg the die.t.el B-6 i
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NL-IU-11205-000-01-c; Itcspord to Diesel Generator " Generator" Alams esq1m ard excitation to rtut dcun Nd the generator brtuker to cyn when a phase tc-thare cvetutrtrnt occur..
Wnen a 187 relay picks up, it caures the 186A lockcut relay to trip.
The 186A lockcut relay will cauce the tripping functic,ns to initiate. 'Ihir, diesel generator trip is available even durinj ereigen y stattup.
Ensutu that the diosol eJnire han rhut dcAn.
This is an autcrutic mergercy stcp situation.
If this alam occurm atd thc dicael generator does rut trip, the diocol generator rust be mergemy atqpd.
'1he control roarn operator will dispatch the CVC to detemitw the cauro of the trip.
Inspect the gerwrator to detect make, hot spots, filu, burnirq cdors, or burning electrical inm11ation.
Make notes of relay tattjets i
thNiry at the gerwrator control parel, inclulity whicta phano(s) of differvntial relays are rhwirn targets.
Chcck for other 186 lockcut t
relays khich ruy have triprod.
Peport firdirns to the control recen operater.
TAF G FRECIT/E ACTIW If a fire has occurrid, assist with firefightiig.
narther corrective actions my include extensive tipairs to the dinsel generator. 'Ihe diesel genarator will to inoperable in an actual rhre differential situation.
Fol1N any further directivas recolved frun the contrul rocrn operator. When directtd, trset the target IWat pirhbutton, dif fetuntial relay flag (s),
ard reset lockcut relay 186A.
IfXt.'llE ACI'IVI'IY log the activity in the dieral generator Icq book. 1his mst be dono after the cause of the alarm is determintd ard action is taken to correct the cordition causirg the alsnn.
E08 (U1A HIG{ 11MP CD1 IEARDCS a
hQlWIEICE_ MIE AIAIM Acknchaedge the alarm ccrdition by deprenslig the A030WLEDCE button on the diesel gemrator panel.
1he fSIA HIGt TD4P GDI EARUGS alarm is locatcd in wirdN EG1 on the annunciator panel.
JFDTPICATE 30'_ AIRH fetentire mil icvels usiry a sight glass.
This alarm occurs at approxirately 1800 P. at the gercrator bearirns, ard is probably causo.1 by Icv oil level, or failure of the gererator pcdestal bearings. The control recrn qmrator will dispatch the Olc to 1ccally check barity oil taperature ard level. The torperature irdicator is a digital roadout type on front of the generator o:ntrol snel. Report the taperature ard level to the cnitrol rocn operator, check for oil leaks or smoka at the pxiestal 8-7 i
tileIU-11205-008-01 <1 Paspard to Diesel Cererator "Gemrator" Alatra tearirr 4 prtblm oculd also tu a talwratutu sensor txilfurttion or Icss c; h to the taterature switdl.
TMIEMCI:D3LALTIM Asaist while Riintemrou perrorvel ackis oil to the ptdestal burirgs.,
WA31E.ACTIVTIY Ing the activit;y in the diesel gererator log book. 'this rust to dono after the cause of tho alam is determined ard ection is taken to correct the cordition causiry the alam.
D06 D01A GDI UliDm-1TGXW4Cl i
If the in is in parallel with tN PAT ard this alitnn occurs (at 59.5 lit),
tho generator outpat breaker tripa. nie crxitml rmn oparator will then step the ergine. If the DG is isolated ard pcuerirq the 4160V 1E bus, the ocotrol roan cperator will adjust the ergine speed control to restoru frapercy to 60112.
ACMTMDT2 UE AINE Ackrxuletkje the alann oorilitico by depressim the ACEN:DGE button on the diesal generatcr panel. The CG1A Gui t?tIDm-ntEQUDKY alam is 1ccatM in wi2dow D06 cn the annurcictor panel.
IINIHrIGNIE mm AINE
'Ihis alam is causat by urder-frequency corditions when the diesal gercrator is runnirn, mio control rmn operator will dispatch the OAO to the generator control panel to check the targets on the Inlays firdirgs to the control rectn operator.
Peport INTdUREC'PIVE AcrIOJ corrective action vill primrily be taken by the control' rom operator.
When directed by the crotrul room operator, depretw the relay target tumt and reset the urder-frequency reley target. Rosot the annurciator ard rotify the control rotun @erator Im mE_Em Img the activity in tho diesel generator Icq book, siis tust tw dcne after the cause of the alam is detamined ard action is taken to ccertet the cen11 tion causim the alam.
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e NIeIU-11105-008-01-c; Pospard to Dieml Generator " Generator" Alarna SIlf_-IIEl' Dcfore prtcealiry to the Mk Practice, ara.mr the following qacstionk.
1.
How nany 1cckout tilays are on the gererator control pvm17 a.
3 b.
5 c.
7 2.
State the rhysical sterra to take in resettirr; a relay target ard a lockout relay, 1
i 3.
Mitch tyrm of generator relay, if pickrxi up, will trip the diesel generator urder both rorral start ard energency statt situatiors?
4.
If you rce a 186 A, B, or C 1cctmt relay hanile in the TRIP pcoitien, you rhould reset the 1cckout relay inimuitately, a.
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NL-IV-11205-008-01-Ct Respcn1 to Diesel Generator " Generator" Alarm IW1hD?>
1.
a.
3 2.
a.
Prass relay taryot wret pushbutton b.
Roset tanyct iniicator(s) on the ruiay(s),
nirn the lockcut relay's rkutilo to meet, ani quickly relreso it, c.
d.
Rocat the anrunciator.
3.
187 difforential relay 4.
Falso. You tust first infom ycur sur*nvisor, who nist clear ycu to recat it.
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NIeIU-11205-008-01-C; Respni to Diesel Generator "Cererator" Alatra TNd IIMCHG Defore procoodity to the Performance hut, cxrplete, the followiry Task Practice exorcir.e.
1.
Paview Prcccdure 17035-1.
IM furu that you urderstarti all prucautions, limitaticas, and stern associata$ with respcedity to diesel gerwater " Generator" alarrs.
2.
Taka this inntneticm1 unit ard Procatare 17035-1 to the diesel gernrator luildirg.
De sure that you can locate all local ctmporetits ard irstzuentation associatai with respxding to diesel generator "Germrator" alans.
3.
In the diesel generator buildirg, walk thtugh the tank of tropentity to diesel genarator "Gererator" alarma.
If paanible, have a fellcw trainec evaluato your performtrx usity Pnxxdure 17035-1 ard this instructioral Unit.
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!!IrIU-11205-008-01-C; Pespord to Diecel Gemrator "Cemrator" Alarm DIDMCX CN TASK IPAQHCE 1.
If ycu have any questiam about the par.:autions, limitations, or' stern in Praxdure 17035-1, ank ycur instnetor.
2.
You should have been able to locate all local corponents anri Inntrumentation asscciated with recpanding to diesel gemrator "Gemrator" alanns.
If ycu had any difficulty, ask ycur instructor for help.
3.
Ycu should have walked ttungh the stegt ncmssary to tropcxd to diesel generator "Gemrtcor" altrra.
If you had any difficulty, rc-red the partinent sections of this instnictiom1 unit ard the prucrxtu.m Resolve any cpesttons with ycur i s tructor.
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