ML18228A476

Letter Response to Request for Completed Diesel Generator Questionnaire

ML18228A476
Person / Time
Site:	Turkey Point
Issue date:	06/15/1978
From:	Robert E. Uhrig Florida Power & Light Co
To:	Office of Nuclear Reactor Regulation
References
Download: ML18228A476 (37)

Text

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REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS >

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NRC ORG:

UHRIG R E

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8. LIGHT DOCDATE: 06/15/78 DATE RCVD: 06/19/78 DOCTYPE:

LETTER NOTARIZED:

NO COPIES RECEIVED

SUBJECT:

LTR 1

ENCL 1

RESPONSE

TO NRC LTR DTD 12/15/77...

FORWARDING APPLICANT"S COMPLETED QUESTIONNAIRE FOR NRC RELIABILITYSTUDY OF STANDBY DIESEL GENERATOR UNITS.

PLANT NAME: TURKEY PT 03 TURKEY PT M REVIEWER INITIAL:

XJM DISTRIBUTER INITIAL:

DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS RELIABILITYOF STANDBY DIESEI GENERATOR UNITS; (DISTRIBUTION CODE AQ14 >

FOR ACTION:

INTERNAL:

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FIlE LEVELS DOCo DATE UNTTED~AMS-NUCL~A~EGULATORYCOMMIS DDC MONTHLY ACCESSION LIST

'0%/01/78 6%/3'0/7 50-390 TENNESSEE VALLEY AUTHORITY WATTS BAR 01 50 04/03/78.

ACCESSION NBR o 78101-0025 UMEN~YPEo C

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RECP o ORE ILLY J P

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GILLELAND J E

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Y RECP AFFILI ORG AFFILIA

SUBJECT:

FORWARDING FINAL CONSTRUCTION DEFIC IN THE MAIN STEAM ISOLATION VALVE B 50 390 04/10/78 ACCESSION NBRo 77340 0248 DOCUMENT. TYPE,o MEMO DOCUMENT-S-I-Z~

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REQUEST FOR RDDL INFO-REQUIREDTQ-C I 50 9

C 04/10/78 ACCESSION NBRo 78102-0081 DOCUMENT T-YPE.

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ORGY CASE E

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FICHE NSR NOTARIZEDo LPDRo Y

RECP AFFILI ORG AFFILIA SUBJECT; ADVISING OF NOTICE OF MEETINGS SUBJ AIMPLEMENTATION OF 10 CFR 73 o 55 RE ESEARCH FS~RYSI CAL PROTECTI~

NUC ~

PWRo REACTORS AGAINST SABOTAG

FLORIDA POWER 5 LIGHT COMPANY June 15, 1978 L-78-206 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory CcxmLssion Washington, D.C.

20555

Dear Sir:

Re:

Turkey Point Units 3 and 4

Docket Nos.,50-250 and 50-251 Diesel 'Generator 'Questionnaire C3l/I Q)

~C'~

4/l Qcno Pl

'Xl CA o

The attached information is submitted in response to a letter fran Karl,R. Goller dated December 15,1977.

Very truly yours, Robert E. Uhrig Vice President RZUpmS/mal Attachment CC:

Mr. James P. O'Reilly, Region XX etg)i, Robert. Lowenstein, Esquire

@000 78'EOPLE...

SERVING PEOPLE

l 1

questionnaire for NUCLEAR REGULATORY COMHISS ION RELIABILITYSTUDY of Standby Diesel Generator Units Date questionnaire Completed:

Plant Name:

Turke Point Diesel Hanufacturer:

Schoonmaker Number of Units:

2 Size Kw/Unit:

6 15 78 Unit Ho. 3 6 4 Model:

645 Series Diesel Engine Electro-Motive Div, G.M. Corp.

Rated Speed:

900 rpm Average Operating Hours Per Unit to Date:

500 hrs DIESEL GENERATOR STATUS A.

~En ine:

1.

Problems are caused chiefly by (give estimated number) a.

Defective parts 9

b..Installation errors:

c.. Failure of system to respond properly in function or sequence:

d.

Faulty adjustment:

l 2.

Would more stringent inspection and testing requirements during acceptance or pr eoperational tests significantly improve the diesel-generator power plant. performance?

Yes Ho X

8. ~5<<i S'(i di l.. Air-to-cylinder cranking.

Air cranking motor X

t1fr.

Electric cranking motor Nfr.

h1odel Wo.

hiodel hlo.

2. If air cranking, then 4 Tanks, 25ft each per D.G.

Give size of starting air tank:

Length Diameter Normal standby air tank pressure 225 psi.

Is pressure reducer used?

Yes x

No Air press regulator Reducer pipe size?

inches.

Starting air cont~ol admission valve pipe size in'air piping system, inches.

Minimum air tank pressure for engine cranking 2l5 psi.

Number of five-second cranking periods between above p

t k

t g

Number of air tanks per engine Can starting air tanks serve more than one engine?

Yes x

No Is air pipe to engine from top of air tank?

Yes x

No Does starting air tank have water condensate drain?

Yes~ Ho Does starting air pipe have water condensate trap and drain near engine?

Yes

'o X

(y serainer only)

Is starting air piping horizontal?

Yes X

Ho Does it slant toward drain?

Yes No (No drain)

If water condensate drains are provi'ded, then is draining:

a.

Automatic through float valve? 'es

'No Manual by hand valve?

Yes No c.. If manual, then is draining water condensate done:

N/A

I daily?

week'ly?

monthly?

before each start if manual?

no procedure?

Is dirt and rust filter provided in star ting air pipe?

Yes ~ No If provided, where installed?

Ahead of air ressure

.re ulator How is it cleaned?

Dismantle and manually clean How often and when?

Give pipe size of filter:

1<" to 1Y'ut inches.

How is it known whether filter is plugged or has high oressure dt op?

'I Is starting air pipe to engine positioned:

a.

Below floor?

b.

On the floor?

z c.

Overhead?

z What is air pressure drop from air tank to engine during cranking psi No way to determine with installed instrumentation Give approximate length (nearest ten feet) of starting air pioe for individual engine or all engines from air tank to:

a.

Nearest engine 3o feet (Each engine has its own air tanks) b.

Furthest enqine feet

Diameter of starting air pipe from:

a.

Air tank to starting valve 2

inches b.

At air starting valve inches c.

At engine inches What is the primary source of power for the start'.ng air system?

A MCC of the asso'ciated unit Is there a duplicate and redundant motor and air compressor set?

Yes

~

Ho (The adjacent unit's)

What is the time required to recharge one air tank?

(6 minutes to recharge 225 psig to 250 psig)

Does starting air supply system have independent secondary power supply for compressor?

Yes Ho x

If yes, then by:

a.

Gasoline engine?

b.

Motor driven?

c.

Other? (Specify~

3. If electric (Battery powered)

cranking, then:

a.

Battery charging:

Continuous trickle charger Intermittent charging If so, how is charging requirement determined?

-.Tine cycle Test Other b.. Battery used:

Common Plant Individual Unit Other Starting cable size; Length:

Battery to engine (1 ongest)

1.

'Does the bulk tank to day tank fuel supply system (viz:

pump, motor, etc.)

have redundant independent power supplies?

Yes X

'No Two transfer pumps one with power source from Unit 3 and one with Does thi's system have a hand-operated emergency fuel power source from U-4 pump?

Yes No~

If yes, is this hand-operated pump and piping in immediate operating c'ondition?

Yes No 2.

Is there a water and sediment drain from the very bottom of the:

a.

Bulk tank?

Yes x

No b.

Day tank?

Yes x

No 3.

Is the reqular functional fuel oil outlet slightly above (two to three inches) the bottom of the:

a.

Bulk tank?

Yes x

No Integral unable to determine b.

Day or integral tank?

Yes No Day No r

4.

Is bottom of day tank and/or inteqral tank above all parts and piping of the enqine fuel injection systems?

X No X

(Day tk)

(Integral Tk)

It yes, Give approximate amount inches feet 5.

Does the engine fuel system have a fuel bleed return line to the fuel day tank and/or integral tank?

Yes X

No During extended operation, such as more than two to three

hours, does the fuel in the day tank become:

(yes or no) a.

Warm?

b.

Hot?

No (above 130'F)

What is fuel oil return line size (nominal)?

a.

Pipe size inches b.

Tubing siz~e 5

8 inches 6.

Do engine fuel oil filters have air bleed or vent valves readily accessible?

Yes 'o X

7.

How is fuel transferred from day tank to engine fuel system?

a.

By gravity x

b.

Engine driven pump c.

Electric motor driven pump d.

Is a manual pump also provided for injection system filling and/or air venting after servicing or replacement of parts in the fuel injection system?

Yes No z

If yes, is the manual pump in immediate operating condition?

Yes Ho 8.

Type of fuel (e.g., dl, ~2, 03, JP-4, etc.)

82

.9.

Approximate bulk tank capacity, aa ooo gallons.

10. Typical frequency of refilling (weekly, monthly, etc.) 2 times/yr ll. Typical refill (gallons),

approx 5,000 gallons D. L~tail S

1.

Lube oil TyPe Zez ~1663 or 1570 diesel engine oil b.

Visco>>ty ZSO lnZZ g 100op SSU 81 g 210op Viscosity Index 72 c.

Specification number Product Code 1663 6 1570, zinc free d.

Oil change determined bv:.

Time interval:

Yes x

No Gi By oil analysis:

Yes x

No monthly water only quarterly, if required by analysis results of every 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br />

2.

Lube oil filters are:,

a.

F,ull flow b.

Bypass c.

Combination z

3.

Interval and/or basis for changing filter cartridge:

a.

Monthly X

b.

Yearly c.

By running time hours d.

By oil analysis.

Yes No e.

By pressure drop.

Yes No f.

Does provisions exist for changing cartridges during engine operation?

Yes No 4.

Oil Pressure Monitoring a.

Normal operating pressure-60 psi b.

Alarm 44 psi c.

Shutdown 17 psi 5.

Oil temperature "control:

a.

By standby heater in engine sump N/A '.

b.

Heating means for maintaininq standby temperature:

Direct in oil Oil-to-water heat exchanger X

Other (Specify)

E.

Coolin S stem - En ine Water l.

Temperature control by:

a.. By, thermostat in water?

Yes X

No If yes, then:

Bypass thermostat?

Yes ~ No Throttle thermostat?

Yes No b.

By radiator shutter:

Automatic Manual Other (give type) 2.

Corrosion control (water additive)?

Yes X

No If yes, give chemical additive or name of compound.

Proportion or concentration control:

a.

By additive measurement?

Yes No z b.

By water coolant analysis'?

Yes x No 3.

Engine cooling water cooled by:

a..

Radiator?

X b.

Heat exchanger from sea, river or other water?

c.

Other?

(give type) 4.

Engine cooling water temperature-monitoring a.

Standby temperature N/A

'F b.

Normal operating temperature

>e>

'F c.

Alarm temperature 17>

F d.

Shutdown temperature 185

- 'F e.

Water circulation during standby:

Thermo-syphon Pump 5.

Water Pressure Monitoring:

Yes x

No a.

Alarm b.

Shutdown c.

Both 35 G.

Water temperature Sensor. Position:

a.

In piping fron engine h.

In engine piping X

c.

In engine direct If yes, then bottom connected to:

a.

Water pump suction?

Yes ~ No b.

Top of system?

Yes No c.

Both of above?

Yes No d.

Is bottom of surge tank above top of engine system?

Yes No x

e.

Does engine have constant air bleed from top of engine water piping to surge or supply tank?

Yes Z

No Give size of bleed or vent line, ~lz inches.

Manual air bleed only?

Yes X

No f.

g, F.

Governor -

S eed Control 7.

Water surge or. supply tank in system.

Yes X

No t<anufacturer Woodyard Electric (speed sensi ng No Hydraul ic X

oP ~35, L G.10, Automatic load sharing?

Yes x

Ilo UG-8 1.

Is compensation or stability control and/or speed of response manually adj ustable?

Yes x 'o If yes, ad,justed by:

a ~

b.

c ~

Eye and ear?

z Test and specification?

Other?

(Specify) 2.

Engine - generator normal shutdown or stopping means and m'ethod.

~ ~

~ Is the engine stopped:

a.

manual ly?

Yes No If'es, then:

Directly at engine?

Yes x

Ho Through local control panel?

Yes X

Ho b.

Automatically through the controls in the control room?

Yes X

Ho c.

By setting governor to "fuel-off" position?

Yes No r

d.

By over-ride of governor settings and control position directly. to fuel injection pumps?

Yes

'o e.

Other means.

Describe briefly.

Fuel supply.cut-off valve

3. 'hen engine is stopped, is'uel control in:

a.

Full fuel or maximum fuel position?

b.

Full off or no fuel position?

z c.

Intermediate' d.

Random?

(If not consistent and typical in.above, then give the usual.)

4.

When starting from the standby condition 'after shutdown for at least 24'hours, give number "of seconds from start-

'o-crank to full fuel or maximum fuel position of governor qnd fuel control, j.o seconds.

G.

Governor - Overspeed (shutdown) 1.

Speed sensing?

a.

Electrical b.

F1ybal 1 c.

Other (Specify) 2.

Fuel shutoff force generated by:

a.

Spring?

b.

Air?

c.

Hydraulic?

d.

Electrical' e.

Other?

(Speci~fy 3.

Overspeed sensing setting?

(in terms of full speed) a.

115%

b.

110%

x c.

Other~Specify) 4.

Is overspeed tripping set point tested periodically?

Yes x

Ho

Ify, h

I.<< f '.~fy I,

hIy, H.

1.

Generator Nfr.

EHD-GH Model Ho.

A-20 Single bearing or two bearings'?

Single Does generator have damper windings?

Yes x'o 2.

Does generator have any obvious fault or difficulty?

Yes Ho~

Is problem repeti tive?

Yes Ho If yes, then describe briefly.

I.

Exciter and Vol tape Regulator Exciter Manufacturer:

Model Type:

Rotating Static If rotating drive?

Oirect Be'It or Chain DC with field control Brushless wi th rectifier 2.

Yoltage Regulator:

Manufacturer Basler llodel gg ~4g~oo Type:

Mechanical Static x

3.

Are paralleled units of automatic load sharing control of fully automatic type?

Yes No x

(Not paralleled)

If yes, has any obvious influence or interrelationship been noted between the stability and response time of the engine governor and the stability and voltage control of the generators?

Yes No 4.

Have engine governor and voltage regulator/exciter adjustments been made on the site or under any con-ditions since any of the Qni ts have been placed in service?

Yes Ilo If yes, by means of wha't tests and what standards?

Give name or very brief description.

5. If any difficulties have occurred, give approximate number of problems..'.

Components b.

Miring c.

Other (damage in service or dropping of miscellaneous hardware into switchboard, etc.)

ev 4 J.

Parallelin:

En ine-Generator Units N/A Do not parallel DGs.

l.

Do all. units consistently have the proper voltage output?

Yes No 2.

Do all uni ts automatically share both the "real" or in-phase load and also the reactive load reasonably well?

Yes No 3.

At the same Kw load, are both the field and the armature line currents of the several uni ts consistently close

'to the same value?

Yes No If no, approximate percent difference.

4.

Synchronizinq a.

In automatic synchronizing do circuit breakers close

- immediately after reaching full synchronous speed?

Yes Ne

b. If "no" above then, does speed of some units drift slowly while failing to synchronize and close circuit breakers?

How many seconds?

Occasionally Always Never K.

Switch Gear and Electrical Con (other than exciter/

voltage regulator L

l. If any difficulties have occurred, then give approximate number of problems.

a.

Components ~~~ayers) b.

Wiring c.

Other (damage in service or dropping of miscellaneous hardware into switchboard, etc.)

d.

Design concept faults.

That is, does the switch qear and its controls perform the proper functions and in proper sequence and timing.'~~I des~<<<<ro>>

has been corrected.

2 ~

'a ~

Do the on-site'diesel generator units and related support equipment have any storage battery power systems for any service whatsoever?

Yes X

No b.

Identify each storage battery power system associated with the on-site diesel generator unit and its function.

4160 Breaker Control Ckts Field Flashin Miscellaneous Controls c.

Does each system identified above adequately fulfill the service requirements for which it is intended?

Yes X

No If no, briefly describe.

d.

Is there a

DG battery maintenance program?

Yes X

No L.

Safet Shut. downs Give safety shut down settinqs compared to equilibrium operating condi tions.

l.

Engine and generator speed.

Give rpm or hertz:

a.

Synchronous and usual b.

Overspeed shutdown setting 2.

Engine cooling water (see E.4) a.

Equilibrium 165

'F b.

Alar'm 175 F

c.

Shut down 185

'F "P

3.

Lube oil pressure (see D.4) a.

Equilibr'ium 60 psi b.

Alarm 44 psi c.

Shut down 17 psi 4.,

Lube oi 1 tempera ture" Not monitored a.

Equilibrium

'F b.

Alarm F

c.

Shutdown

'F 5.

Indicate all other protective interlocks (give name and;)

a.

Usual or proper condition Hi crankcase ress tri 8 1.7" H20 start. failure relay not up to speed 15 sec.,

DG lockout electrical gen malfunctions (7'inputs); Local/Remote Smitch, Lolevel in skid tk.

b.

Shutdown condition N/A see (a).

6.

a.

What source of power is provided to operate alarms and shutdown controls?

(See G.2) 125 v DC 6 120 v AC b.

Do the generator units automatically shutdown in case of the electrical power loss to its control system?

Yes ~ No N..

Emer enc or Alert Conditions l.

Are all safety shutdown and safety inter locks bypassed during emergency conditions?

Yes No z

e

2. If "no" above, then which are not bypassed.

Name items.

Overspeed trip, Iianual tri, Diesel electrical tri s.

Breaker not closed 15 sec. after start of D.G., start failure of DG.

3.

For e'ach interlock not bypassed is coincident logic used?

Yes No X

If yes, is it testable?

Yes No N.

Haintenance 1.

Does plant have regularly scheduled maintenance pro-If so, return copy of these procedures with questionnaire.

2.

>Ihen need for minor adjustments obviously exists, then:

a.

Is remedial action taken immediately or at earliest practical opportunity?

Yes~ No b.

Is remedial action taken only at periodic prescheduled or programmed times and conditions?

Yes No c.

For best performance record which of above appears better:

immediate or early action'?

X as scheduled on1y?

d.

Hust permission for minor maintenace be obtained from some higher out-of-plant authority?

Yes No X

e.

Is maintenance referred to above allowed and encouraged?

Yes x

tio In periodic surveillance tests, simulated alert standby tests, etc., is the criteria "pass/not pass" the test used?

Yes X

Ho g.

Is there a conscious continuing policy to detect and remedy marginal conditions or imminent trouble:

for examples:

lube oi.l pressure shutdown only two to five psi below operating pressure or, perhaps overspeed governor setting only one or two percent above starting speed surge or etc.?

Yes X.

No,

~- h.

Are efforts to remedy marginal or questionable conditions

. as mentioned above encouraged by plant management?

Yes x

No i.

Are remedial steps on items similar to the above taken or allowed when the unit has started and operated satisfactorily within specified limits or conditions?

Yes X

No 0.

Startino Conditions 1.

Give starting or necessary cranking time as experienced.

a.

Starting time per specification 15 seconds b.

Usual starting time 10 seconds c.

Haximum starting time observed 10 seconds

2.

Give usual time intervals as follows:

a.

Time from start-to-crank to first firing.of any cylinder.

seconds b.

Time from start-to-crank to approximate full firing of. al 1 cylinders.

seconds 3.

Give maximum speed surge when starting; use both tachometer and frequency meter if possible.

Does.not surge b.

Usual conditions 900 rpm 60 Hz Maximum observed 90O rpm 60 Hz 4.

During a surveillance test, give time from start-to-crank to when steady synchronous speed is attained and maintained.

a..

Usual lo seconds b.

Maximum mm seconds c.

As specified l>

seconds.

5.

Give briefly the most troublesome problems in 'starting.

a.

Host troublesome Low water press (inadequate surge tank).

b.

Next to most troublesome Fuel line problems (starvation)

P.

Air Cleaner or Air Filter - Combustion Air 1.

Combustion air source:

taken from engine room or inside the building,. or from outdoors?

a.

Indoors~

b.

Outdoors am b.

Ce d.

e.

-3.

Excessive air flow restriction and servicing need determined by?

a.

Instrument such as:

2.

Give type and make of air cleaner's or air filters:

Oil bath Hake PARR Model C25850B Oil wetted screen Hake Paper Hake Other Hake Precleaner:

Yes No X

b.

C.

de e.

manometer Personal judgement by appearance, etc.

By smoking exhaust Time schedule X Periodic Maintenance Dt (p

'y1 4.

Are clipatic extremes normally experienced such as:

N/A a.

Air heavily loaded with water mist, high humidity and low temperature?

Yes No x b.

Blowing sand and dust?

Yes No X

c.

81 owi ng snow (blizzards)?

Yes No x

d..

Other-Narae 5.

Are climatic extremes potentially possible such as:

a.

Air heavily loaded with water mist,'high humidity and low temperature?

Yes No b.

B'lowing sand and dust?

Yes No~

c.

Blowing snow

( blizzards l?

Yes No Z d.

Other-Name Tem erature Conditions l.

Ambient outside hottest 95

'.F.

2.

Ambient outside coldest

'F.

3.

Engine-generator room hottest

'F.

A.,Engine-generator room coldest F.

35 o

5.

Inside swi tch gear hottest Air Cond.

<<19-R.

0 erator ualifications (as presently exists, and suggested minimums if different l.

Minimum education required (check)

~Exi stin

~Su ested a.

High School b.

. Trade School c.

Technical School d.

No minimum 2.

Minimum Years of operating experience (diesel electric generator)

Existina

~Su usted

. a.

0-3 b.

3-6 c.

6-10 d.. 10-15

'3.

Operator training a.

Mi1 itary b.

Industrial c.

On-the-job d.

Combination of a, b,

'and c (indicate which)

~Exi stin Suquested 4.

licensing required a.

State b.

Federal c.

Utility or self d.

None Existina Sucuaested S.

Are any ~farci n eases such as propane, freon, halon, carbon dioxide, etc. stored in the:. Oiesel Engine room'?

Yes No or adjacent bui'Idings?

Yes No If ye s,

( othe r than hand portable fire exti ng ui she rs ), then identify gases a nd give approximate ta nk size.

3 Gases Volume (ft

)

T.

Does control system automatically bypass, in emergency

starting, any engine temporarily out of service for maintenance?

Yes No X

If yes, then how many failures to bypass have occured?

U.

Does the control system automatically override the test mode under emergency conditions?

'Yes No V.

Have repetitive mechanical failures occurred in any component part or subsystem of the engine, generator, or switch gear, etc.?

Yes x

Ho If yes, then which part or subsystem?

4Kv Breaker Water S stem, fuel system, starting air.

How many failures?

A rox.

15 Give nature of failure.

Electrical, low ress.

M.

)tould periodic (yearly or other) evaluation and/or testing by "outside experts" contribute significantly to the diesel-generator reliability?

Yes No GiVe brief reaSOnS fOr the, anSWer.

This is the Practice at PTP.

X.

1.

Give the accumulated time-load operating record for each diesel-genera<or unit from installation to the present (Running Hours):

A 9/14/71 Preoperational test Date B 8/6/71 Engine ':

Surv. Testing 5

Emergency Total

Serial Ho.

Haintenance Hrs..:

and Other Hours Ho Load

Loaded Service Hrs.

~

~

A 1398

~

B,

~

1302 447.7 389.9 DG are only run for surveillance tests

& post maintenance no record to separate each.

2.

Surveillance test. load (percent of continuous rating) 110~

-3.

Give the projected or planned time-load operation for each diesel-generator unit during the next 12 months.

2750 KW 2750 KM 2500 161

Sur veil 1 ance 5:

Emergency

tiaintenance Hrs.

and other Service Hrs.

Total Hours 30 30 Provide the following sunmary of the eriodic surveillance testin experience:

a.

Starting date of surveillance testing (OL date) 7/19/72 b.

Periodic test interval Bi-weekly c.

Total number of surveil lance tests performed about 180/engine d.

Total nunber of test failures 9

failure to start 5

f 1

11 failure due to equipment not conditions (fail. of Air failure to accept load 6

Bker to close failures due to operator error 1

beinq operative during energency e.

Supply a copy of the surveillance test procedures with this completed questionnaire.

I

0

<<22 Additional Comments Y.

General Su qestions Briefly give constructive criticism or suggestions as to improvement in reliability of the diesel generators.

These remarks may cover tests, maintenance, practices,

orders, policy, adjustments, etc.

LORIDA POWER

& LIGHT COMPANY TUTOR'.Y POINT UNITS 3

& 4 OPERATING PROCEDURE 4304.1 JANUARY 27 1978

1.0 Title

EMERGENCY DIESEL GENERATOR PERIODIC TEST LOAD ON 4KV BUS 2.0 A

royal and List of Effective Pa es:

I 3.0 2.1 ~Aroval:

2.2 List of E fective P es:

1 1/27/78 2

1/27/78 gr m Change Dated 1/27/78 Reviewed~.by".,PNSC Janua 27 1978 Approved. by e.

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Date "J~~~~She'et'~Tp 5/19/75 4

1/2FPP8 ~ g c,jji";Sheet -$!PP(19/75 pureeee:

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This procedure provides instruction for:

4g D

1.'anually starting the Emergency diesel generator from control room.

2.

Paralleling the emergency diesels with energized 4160 V bus.

3.

Loading the unit to test load of 2750 KW.

This test is performed to meet the requirements of Technical Specification 4.8.1.

This test is scheduled in Operating Procedure 0204.2, Schedule of Periodic Tests, Checks, Calibrations and Operating Evolutions.

I 4.0 Pxecautions and Limitations:

4,1

. For test.purposes the generator load shall n<< exceed 2750 KW and genexato current shall not exceed 435 amps.

4.2 4.3 Except during the normal cooldown cycle of ll to 14 minutes, do not allow engine to run unloaded at 900 RPM for periods in excess'f 10-15 minutes unless absolutely necessary.

This type of operation causes oil to collect in turbocharge turbine, which could. result in a turbocharger fire-.,

Upon completion of the test the diesel generator and all associated equipment must be inspected to verify that it is ready to run, the local normal selector switch is in the NOR'fAL mode, the key-interlock

, bypass switch is in the BY-PASS mode, and the diesel generator 4160 volt breakers are recharged.

4.4 During parallel operation only one emergency diesel breaker shall be closed at a time.

Closure of both breakers would result in tying the auxiliary busses of 3

& 4 units together through the emergency diesel breakers.

Excessive circulating currents could result.

~i OPERAX PROCEDURE 4304. 1,,

'AG E'URGENCY DTESEL GENERATOR 1/27/78 4.5 The electric motor driven prelube pump (soak back pump) must be in operation.at all times engine is not running.

This is necessary to provide turbo charger prestart lubrication and post shutdown bearing cooling.

4.6 Caution must be used when paralleling emergency diesel with system as there are no sync.

check relays; 4.7 Normal fuel oil pressure at 2750 KM is approximately 30 psi.

Change fuel oil filter when fuel oil pressure exceeds'"40 psi.

5.0

.Related S stem Status:

The plant should be in a stable condition with no anticipated major operator action required during the test period.

6.0

References:

.6.1 PSAR, Section'

'6.2 Technical Specifications 3.7 and 4.8.

6.3 Schoonmaker, instruction Manual for 2800 KW Emergency Diesel Electric Generator.

6.4 Bechtel Corporation Logic Diagram, Diesel generator and diesel breaker controls, dwg. No. 5610-E-.33.

6.5 Operating Procedure 4303.1Emergency Diesel Generator NormalStandby Condition.

7.0 Records R

uired:

F 1 Completed copies of section 8 of this~rocedure constitute quality

~ssn~gge records and, therefore, shall be routed to the Quality

-ControL Surveillance,.Technician in accordance with Administrative

. Procedure 019Q ~

Scheduling and Surveillance.of Periodic Tests and Cbecbe"Re cd=ed b

Tecbn'-ca dpeciPicetiona, and.~>>

~ be.rata'"ed in accordance with Administrative Procedure~

.trol and Quality Assurance Records.

INITIALS A

B OPERAT~e PROCEDURE 4304 1 ~

PAC

~IERGENCY DIESEL GENERATOR PERIODIC TEST LOAD ON 4KV BUS I

8. 0 Instructions:

NOTE:

Omit steps 8.1 through 8.6 if companion diesel generator is not in the ready-to-start mode.

8.1 Emergency Generator Daily Check List has been completed.

NOTE:

Xf Ready-To-Start light is out or if Diesel Generator fails to start refer to Operating Procedure 4303.1, Emergency Diesel Generator Normal Standby Condition.

FOR DOCUMENT CONTROL USE ONLY T.OPS T DATE T YN T DEPT T DOCT T DOCN T SYS T CCXP T ITN T BET 8.2 Close air supply valve'o starter motors.

(

8.3 Open cylinder drain cocks and manually bar engine over, at least one revolution.

8.4 Inspect for water at drain cocks Notify Maintenance Superintendent if water is evident.

Do, not operate engine for test if water is evident.

8.5 Close drain cocks.

8.6 Open air supply to starter motors and place a clean rag under the exhaust from the starter motor to check for proper operation of the in line lubricators.

8.7 Establish communication between operators in emergency diesel room and control room.

8.8'erify Ready-to-Start light ON.

. 8.9.

Place key interlock bypass switch, located 'on diesel electrical

panel, to OFF.

8.'10 NOTE:

Ready-To-Start light goes off when key interlock bypass switch is switched to OFF.

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Press start button on console for emergency diesel under. test and simultaneously start stop watch.

8. 11 8.12 Record time to reach approximately 60 Hz 6 4160 volts.

Set governor speed droop to approximately 30 on droop scale.

This setting is always left on "0" when engine is in standby mode.

Check the clean rag placed under the starter motor exhaust for evidence of oil.

8. 13 8.14 From the console, adjust frequency,'hase, and voltage to match auxiliary bus.

N

'Close the emgergency diesel breaker from the console.

On the first, third, and fifth weeks the diesel should be tied to the 83 unit bus.

On the second and fourth weeks the diesel should be tied to the 8'4 unit bus.

Never close both breakers at:the same time when the busses are energized.

OPERATING PROCEDURE 4304.1, PAGE 4 EMERGENCY DIESE>> GENERATOR PERIODIC TEST LOAD 0 KV BUS L/8// /5 INITIALS A

B

8. 15 8-16

8. 17 Pick up load to approx.

1000 KW and hold for approximately 5 minutes.

Take readings for Data Sheet two minutes after reaching 10(D KW load.

Operator in diesel room will inspect equipment for abnormal conditions.

Raise load to 2500 KU and hold for" approximately 45 minutes-

8. 18 Take readings, as specified on data sheet thirty minutes after

- reaching 2500 KQ load.

8. 19 Slowly open air box drain valve approx.

10% and purge oil from the air box.

Reclose to a point where a slight flow of air, into the drain bucket, can be detected.

Do not close air box drain valve completely.

8. 20 After approximately 45 minutes increase load to 2750 KW.

of operation at 2500 KH,

8. 21 Operate unit for approximately 10 minutes 2750 KW.

Take readings

's specified on the data sheet two minutes after reaching 2750 KW load

8. 22 After approximately 10 minutes operation at 2750 KM, reduce load to approximately 200 Ktf, and open emergency diesel generator breaker.

Do not exceed 15 minutes operation at 2750 KH.

8. 23 Reset governor speed droop to "0" on the droop scale.

8. 24 Adjust console speed/load changer so that emergency diesel is at 60H

8. 25

8. 26 8.27 Adjust, emergency diesel generator voltage to 4160 volts, from console.

NOTE.

Speed and voltage adjustment settings determined in 8-24 >>d 8.25 are the settings required for emergency deadline operation-Press stop button, on the console.

Verify the Diesel Generator completes the shutdown cycle and comes to a complete stop.

8.28 Return key interlock bypass switch to BYPASS.

8.29 8.30 8.31 8.32 l

8.34 Verify all alarms are clear and the Ready-To-Start light is ON.

Verify Local Normal selector is in NORKQ position.

During the first test of each quarter (on each diesel) obtain a copy of Appendix 0 of Operating Procedure 0209.1, Valve Exercising Pro-

cedure, and obtain required data during performance of next two steps.

Press the "Push to Fill" switch and observe the Skid Tank Level.

Release the "Push to Fill" switch when the Skid Tank level exceeds 200 gallons.

Record the tank level.

Diesel A Skid Tank level Diese1 B Skid Tank level NOTE:

The High Level Switch will prevent over filling the Skid Tank.

Test run Diesel Fuel Oil Transfer Pump.

Verify that the emergency diesel generator breakers are recharged.

OPERATING PROCEDURE 4304. 1, EST OPERATION OF EMERGENCY DIESEL GENERATOR SET DATA AND RECORD SHEET SHEET 1 5/19/75

DIESEL 'GENERATOR A Date

" Time from start signal to 60 Hertz and 4160 Volts Accepta-ce Criteria Sec.

< 15 sec.

Start 2 minutes 30 minutes after Road

'fter load at 1000 KU

. at 2500 KV 2 minutes after load at 2750 Sl<

~Saa Clock Time:

Min.

Running time Meter Hours Load, output KU Frequency Hertz Gen. Voltage Volts Gen. Current Amps Fuel Oil Level Day Tank Ft-In, Fuel Press Oil Press Outside Air Temp Psi Psi oF Engine Coolant Temp

'F The starter motor. exhaust shows evidence of oil.

Yes No.

a Synchronized to Bus Remarks:

Test Performed By:

'.Evaluated bv:

s',uclear P a"".".upervisor

P i

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