ML090400737

Entergy Nuclear Northeast - 2-ECA-0.0, Revision: 2; Loss of All AC Power

ML090400737
Person / Time
Site:	Indian Point
Issue date:	04/23/2008
From:	Entergy Nuclear Northeast
To:	Engineering Region 1 Branch 1
John Richmond
References
2-ECA-0.0, Rev 2
Download: ML090400737 (29)

Text

Nuclear Northeast Procedure Use Is: 0 Continuous Reference 0 Information Control Copy: .I -- Effective Date:

2-ECA-0.0, Revision:

2 Approved By: PARTIAL REVISION Number: 2-ECA-0.0 A. B. C. iitle: Revision Number: LOSS OF ALL AC POWER REV. 2 PURPOSE This procedure provides actions to respond to a loss of all AC power. SYMPTOMS OR ENTRY CONDITIONS

1) The symptom of a loss of all AC power is the indication that all 480V busses are de-energized.

2) This procedure is entered from 2-E-0, REACTOR TRIP OR SAFETY INJECTION, Step 3, on the indication that all 480V busses are de-energized.

ADVERSE CONTAINMENT CONDITIONS EOP values for adverse containment should be used if either of the following conditions exist: o Containment radiation levels greater than 1E5 R/hr. - OR - o Containment pressure greater than 4 psig. I 1 of 28 Number: litle: 2- ECA-0 .O LOSS OF ALL AC POWER I. Verifv Reactor TriD: Manually trip reactor. o Reactor trip breakers - OPEN o Neutron flux - DECREASING o Rod bottom lights - LIT Revision Number: REV. 2 o Rod position indicators - AT ZERO 2. Verifv Turbine Trio: a. All turbine stop valves - a. Manually trip turbine. LE CLOSED turbine will !4OJ trip, close MSIVs. - IF MSIVs can NOi be closed, THEN manually run back turbine. 2 of 28 Number: TiLle: llevision Number: 2- ECA-O .O LOSS OF ALL AC POWER REV. 2 ~ ACTION/EXPECTED RESPONSE 3. Check If RCS Is Isolated:

a. PRZR PORVs - CLOSED a. E PRZR pressure less than 2335 psiy, THEN manually close PORVs. b. Letdown isolation valves - b. Manually close valve. CLOSED 0 LCV-459 o 200A o 2008 0 2OOC c. Excess letdown isolation valve c. Manually close valve. - CLOSED o 213 4. Verify AFW Flow - GREATER THAN 400 GPM: a. Turbine-driven AFW pump RUNNING b. Manually align turbine-driven AFW pump FCVs as necessary

c. Adjust steam supply speed control valve as necessary:

o HCV-1118 a. Manually open steam supply reyulator valve: 0 PCV-1139 3 of 28 Number: 2 - ECA-O .O ff****l.******..*~lf**,***)*t*.tt.t

• CAUTION *

• The load on the diesel generators should remain less than 1650 KW but may *

• be increased to 2000 KW for a maximum of 2 hrs in any 24 hr period. * * * ***~******f****f*f~*f.tt******~~~~**~*~~*~*

Title: Revision Number: LOSS OF ALL AC POWER REV. 2 5. Try To Restore Power to Anv 480V &.L a. Energize 48UV bus with diesel generator:

1) Check diesel generator(s) - 1) Emergency start diesel RUNNING generator(s1:

a) Manually actuate SI 2) Verify 480V bus - 2) Manually energize 480V bus AUTOMATICALLY ENERGIZED from running diesel generator.

This Step continied on the next page. 4 of 28 2-ECA-0.U STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED - IF 48UV bus can NOT be energized from diesel generator(s1, iHEN perform the following:

a) Locally trip running diesel generator(s).

bf Contact Con Ed UU to determine if 138KV or 13.8KV power readily available.

c) E outside power is NOT readily available, THEN perform the following:

1. Start Appendix R DG per: 0 2-SOP-27.6, UNIT 2 APPENDIX R UIESEL GENERATOR OPERATION

2. Dispatch NPU to black start a GT per: 0 2-SOP-27.5.3, BLACK START OF GAS TURBINE 1, 2, 3. 3. Go to Step 6. OBSERVE CAUTIONS PRIOR TU STEP 6. d) E outside power is readily available, THEN attempt to manually energize 48UV bus using the following:

0 2-AUP-138KV-I, LOSS OF POWER TO 6.9KV BUS 5 - AND/OR 6. 0 2-AOP-48UV-1, LOSS OF 48UV BUS. This Step continued on the next page. 5 of 28 LOSS UF ALL AC POWER REV. 2 ~

Number: 2- ECA-0.0 b. Check 480V busses - AT LEAST ONE ENERGIZED:

o 2A AND 3A - OR 0 5P litle: Revision Number: LOSS OF ALL AC POWER REV. 2 OR o 6A c. Start one service water pump on the essential header to support running diesel generator

d. Return to procedure and step in effect and imlement FRPs b. Go to Step 6. OBSERVE CAUTIONS PRIOR TO STEP 6 6 of 28

- Number': Title: Revision Number: 2- ECA-0 .O LOSS OF ALL AC POWER REV. 2 STEP I CAUTION f

• o When power is restored to any 480V bus, recovery actions should + continue starting with Step 24.

• o If an SI signal exists or if an SI signal is actuated during this

• procedure, it should be reset (refer to Step 18b) to permit manual ' loading of equipment on a 480V bus. ' o If a diesel generator is started, a service water pump should be

• started on the essential header to provide diesel generator cooling.

• o If a partial train (bus 2A or bus 3A) is energized, safeguards

• equipment on the energized bus including RCP seal cooling should be *

• placed in PULLOUT or isolated. . * . * * * . f

• 1 * *.f***ff**f*ff*f**lf****.**ttt

6. Place Foilowinq Eauioment Switches In PULLOUT Position:

o Containment spray pumps o SI pumps o FCUs o Motor-driven AFW pumps o Turning gear oil pump o Bearing oil pump o Turbine auxiliary oil pump o CCW pumps o RHR pumps 7 of 28 2 - ECA-0.0 This Step contiiiiied on the next page. 8 of 28 LOSS OF ALL AC POWER REV. 2 Number' : rille: 2-ECA-0 .O LOSS OF ALL AC POWER 9 of 28 Revision Number: REV. 2

. Nunibe r : Title: Rev1 siori Number: 2-ECA-0.0 LOSS OF ALL AC POWER REV. 2 8. DisDatch Personnel To Locallv Close Valves To Isolate RCP Seals And Place Valve Switches In CLOSED Position:

o RCP seal return isolation valve outside containment:

0 MOV-222 o RCP seal injection isolation valves outside containment:

0 MOV-250A o MOV-250B 0 MOV-250C o MOV-2500 o RCP thermal barrier CCW return isolation valve outside containment:

0 MOV-789 10 of 28

- Number: .I i t I e: Kevi s ion Nuinber : 2- ECA-O .O LOSS OF ALL AC POWER REV. 2 - 9. Check If CST Is Isolated From Hotwell : a. Verify condenser hotwell isolation valves - CLOSED: o LCV-1128 0 LCV-1128A 0 LCV-1129 o CD-6 o CT-8 b. Place condenser hotwell isolation valve controllers in MANUAL: o LCV-1128 o LCV-1128A 0 LCV-1129 10. Check SG Status: a. MSIVs - CLOSED b. Main FW regulating and bypass valves - CLOSED c. Blowdown isolation valves CLOSED a. valve(s1 open or position not known, THEN dispatch personnel to locally close valve(s).

valve(s1 can NOT be closed, iHEN locally close associated isolation valve(s1:

o CT-7 for LCV-1128 and o CD-5 for LCV-1129.

LCV-1128A.

Manually close valves. E valves can be manually closed, locally close valves. Locally close MSIVs as necessary per 2-SOP-ESP-001, LOCAL EQUIPMENT OPERATION AND COMPENSATORY ACTIONS. 11 of 28 Number: Title: 2- ECA-O .D LOSS OF ALL AC POWER 11. Check If Aiiv SG Is Faulted: a. Check pressures in all SGs - o ANY SG PRESSURE DECREASING IN AN UNCONTROLLED MANNER - OR - o ANY SG COMPLETELY DEPRESSURIZED b. Isolate faulted SG(s): o Isolate AFW flow o Dispatch NPO to close steam supply header valves to turbine-driven AFW pump from faulted SG(s): o MS-41 (SG 22) o MS-42 (SG 23) o Verify SG atmospheric steam dumDs - CLOSED Revision Number: REV. 2 a. Go to SteD 12 b. Manually close valves. 1_E valves can NOT be closed, THEN dispatch NPO to attempt to locally close valves or associated block valves. 12 of 28 Number: 2- ECA-0.0 12. Check If SG Tubes Are Intact: o Main steamline radiation recorder (R-28, R-29, R-30 and R-31) - NORMAL o Condenser air ejector radiation recorder (R-45)- NORMAL o SG blowdown radiation recorder (R-49) - NORMAL o NO SG LEVEL INCREASING IN AN UNCONTROLLED MANNER Title: Revision Number: LOSS OF ALL AC POWER REV. 2 Try to identify ruptured SG(s). Continue with Step 13. OBSERVE CAUTION PRIOR TO STEP 13. WHEN ruptured SG(s) identified, THEN isolate ruptured SG(s): o Isolate AFW flow o Dispatch NPO to close steam supply header valves to turbine-driven AFW pump from ruptured SG(s): 0 MS-41 (SG 22) 0 MS-42 (SG 23) o Adjust ruptured SG(s) atmospheric steam dump controller setpoint to 74%, 1030 psig. WHEN ruptured SG pressure less than 1030 psig. THEN verify ruptured SG atmospheric steam dump closed. 1+ NOT closed, THEN place controller in manual and close valve. IF valve can NOT be closed, locally isolate oDen valve. - 13 of 28 Number: 2-ECA-Or 0 14 of 28 litle: Revision Number: LOSS OF ALL AC POWER REV. 2 N~inbii r : 'I i ti e: 2-ECA-O .

0 LOSS OF ALL AC POWER 15 of 28 Revision Number: REV. 2 Number: 2-ECA-0.0

• o SG pressures should NOT be decreased to less than 110 psig to prevent

• injection of accumulator nitrogen into the RCS.

• o SG narrow range level should be maintained greater than 10% (27% FOR

• ADVERSE CONTAINMENT) in at least one intact SG. If level can NOT be

• maintained, SG depressurization should be stopped until level is

• restored in at least one SG. I . ~fff.*ff*t***~fff*f**t***)tlltl*lft**l Title: Revision Number: LOSS OF ALL AC POWER REV. 2 I I

• f f * *I NOTE o The SGs should be depressurized at a rate sufficient to maintain a cooldown rate in the RCS cold legs less than 100°F per hour. This will minimize RCS inventory loss while cooling the RCP seals in a controlled manner . o PRZR level may be lost and reactor vessel upper head voiding may occur due to depressurization of SGs. Depressurization should NOT be stopped to Drevent these occurrences.

16. Deoressurire Intact SGs To 210 DSiq: a. Check SG narrow range levels - a. Perform the following:

GREATER THAN 10% (27% FOR ADVERSE CONTAINMENT) in at 1) Maintain maximum AFW flow least one SG until narrow range level greater than 10% (27% FOR ADVERSE CONTAINMENT) in at least one SG. 2) Continue with Step

17. WHEN narrow range level greater than 10% (27% FOR ADVERSE CONTAINMENT) in at least one SG, THEN do Steps 16b through 16e. This Step coniinued on the next page. 16 of 28 Number : litle: 2 -ECA-O .O LOSS OF ALL AC POWER b. Manually dump steam using SG atmospheric steam dumps to maintain cooldown rate in RCS cold legs - LESS THAN 100"FiHR Revision Number: REV. 2 c. Check RCS cold leg temperatures - GREATER THAN 325" F d. Check SG pressures - LESS THAN 210 PSIG e. Manually control SG atmospheric steam dumps to maintain SG pressures at 210 psi0 17. Check Reactor Subcritical:

o Intermediate range channels - ZERO OR NEGATIVE STARTUP RATE o Source range channels - ZERO OR NEGATIVE STARTUP RATE b. Locally dump steam using SG atmospheric steam dumps: o Refer to 2-SOP-ESP-001, LOCAL EQUIPMENT OPERATION

__ AND COMPENSATORY ACTIONS for local operation as necessary.

c. Perform the following:

1) Control SG atmospheric steam dumps to stop SG depressuri rati on. 2) Go to Step 17. d. Continue with Step 17. WHEN SG pressures decrease to less than 210 psig, THEN do Step 16e. e. Locally control SG atmospheric steam dumps to maintain SG pressures at 210 psig: o Refer to 2-SOP-ESP-001, LOCAL EQUIPMENT OPERATION AND COMPENSATORY ACTIONS for local operation as necessary.

Control SG atmospheric steam dumps to stop SG depressurization and allow RCS to heat up. ~ 17 of 28 Number': 1 i 1.1 e : 2-ECA-0.0 LOSS OF ALL AC POWER CAUTION Krvision Number: REV. 2

• Placing key switches to DEFEAT will prevent auto SI actuation.

f

• f***fft*******f*fl**f*ttt**************~*~~~

II Depressurization of SGs will result in SI actuation.

SI should be reset to permit manual loading of equipment on 480V bus. I/ 18 Check SI Sianal Status: a. SI - HAS BEEN ACTUATED b. Reset SI: 1) Check all CCW pumps RUNNING a. Go to Step 22. WHEN SI is actuated, THEN do Steps 18b, 19, 20 and 21. 1) Place non-running CCW pumps CCR control switches in PULLOUT. 2) Place controls for main AND bypass feedwater regulating valves to CLOSE 3) Verify Automatic Safeguards Actuation key switches on Panel SB-2 in DEFEAT position:

o Train A SIA AND - o Train B SIA-2 4) One at a time, depress Safety Injection reset buttons (Panel SB-2): o Train A o Train B 5) Verify Train A AND B - RESET 5) Verify Relays reset (Top of Safeguards Initiation Racks 1-1 AND 2-11: 0 SIA-1 o SIM-1 0 SIA-2 o SIM-2 18 of 28 2-ECA-0.0 ACTION/EXPECTED RESPONSE ATTACHMENT 1 provides a list of Phase A valves. LOSS OF ALL AC POWER REV. 2 19. Verify Containment Isolation Phase A: a. Phase A - ACTUATED 0 Train A master relay CAI (above rack E) o Train 8 master relay CA2 (above rack F) b. Phase A valves - CLOSED c. IVSW valves o 1410 o 1413 o SOV-3518 o SOV-3519 d. WCP valves o PCV 1238 o PCV 1239 o PCV 1240 o PCV 1241 OPEN: OPEN: a. Manually actuate phase A. b. Manually close valves. IF valves can NOT be manual5 closed, THEN locally close Val ves. c. Manually open valves. d. Manually open valves. e. Place personnel AND equipment hatch solenoid control switches to INCIDENT on SM panel 19 of 28 Number: 2- ECA-0.0 20. Verify Containment Ventilation Isolation:

Title: llcvi s ion Number: LOSS OF ALL AC POWER REV. 2 a. Containment purge valves - a. Manually close valves.

CLOSED: o FCV-1170 iHEN close valves from fan o FCV-1171 room. o FCV-1173 - IF valves can NOT be closed, - IF valves can NOT be closed, o FCV-1172 inEN dispatch operator and HP personnel to close outside valves by isolating instrument air: 0 FCV-1171, IA-780 0 FCV-1173, IA-779 b. Containment pressure relief

b. Manually close valves.

valves - CLOSED: o PCV-1190 iHEN close valves from fan 0 PCV-I191 room. 0 PCV-1192 - IF valves can NOT be closed, - IF valves can NOT be closed, __ THEN dispatch operator AND HP personnel to close outside valves by isolating instrument air: 0 PCV-1191, IA-777 o PCV-1192, IA-778 - IF containment pressure relief can &QJ. be isolated, jXJN- locally close the following valves (Fan House 88 ft. el): 0 UH-1013, Pressure Relief Fan 0 UH-1014, Pressure Relief Fan Inlet Stop Outlet stop 20 of 28 Nuniber : 2- ECA-0 .O 21. Check Containment Pressure - HAS Perform the following:

REMAINED LESS THAN 24 PSIG a. Verify containment sDraY Title: Revision Number: LOSS OF ALL AC POWER REV. 2 signai actuated.

U'~, THEN manually actuate. b. Verify containment isolation Phase B valves closed.

__ IF NOT, ~ THEN manually close valves. - IF valves can NOT be manually closed, TnEN locally close valves. c. Verify IVSW isolation valves open: o 7864 o 7865 o 7866 o 7867 d. One at a time, depress Containment Spray Reset Pushbuttons:

o Spray SYS Reset Train A o Spray SYS Reset Train B 22. Check Core Exit TCs - LESS THAN - IF Core Exit temperatures greater 1200°F than 1200°F and increasing, THEN 40 to SACRG-I, SEVERE ACCIDENT CONTROL ROOM GUIDELINE INITIAL RESPONSE, Step 1. 21 of 28 Number: 2-ECA-O .O o 2A AND 3A 1) Check status of local litle: Rev is ion Nuiubcr: LOSS OF ALL AC POWER REV. 2 OR - actions : o 5A - OR o 6A o AC power restoration o RCP seal isolation.

o DC power supply. 2) Check status of auxiliary boration systems: o BAST temperature greater than 155°F. - IF temperature less than 155°F. request TSC to provide emergency power supply for boric acid heat trace to prevent crystal 1 iration. 3) Check status of spent fuel cooling: o Spent fuel pit level greater than low level alarm. - IF level less than low level alarm, THEN dispatch NPO to makeup to the spent fuel pit as necessary.

4) Open doors on all control room cabinets.

5) Dispatch NPO to open AFW pump room roll -up door. 6) Return to Step 11. OBSERVE CAUTION PRIOR TO STEP 11. 22 of 28 Number: litle: 2-ECA-O .O LOSS OF ALL AC POWER CAUTION * *

• The loads placed on the energized 480V bus should NOi exceed the capacity *

• of the power source. f f*.f***.*ftf*.l,**f.+Itt***t***ttt*~**~***~******** - NOTE ATTACHMENT 2 provides a list of 480V equipment load ratings. Revision Number: REV. 2 25. Verify Service Water System Ouerati on : I a. Verify at least one pump - a. Manually start pump. RUNNING ON ESSENTIAL HEADER I b. Service water valves from b. Locally open valves as 23 of 28 Number: l~itie: 2- ECA-0.0 LOSS OF ALL AC POWER a1 ternate power supply per 2-SOP-27.1.6, INSTRUMENT BUS, DC OISTRIBUTION SYSTEM AND PA SYSTEM INVERTER llev is ion Nllmber : REV. 2 d. 23 Static Inverter on alternate power supply per 2-SOP-27.1.6 o Bus 2A: a. MCCs: o MCC 24 o MCC 24A b. 22 Battery Charger in service c. 22 Static Inverter on alternate power supply per 2-SOP-27.1.6

d. PA System Inverter on alternate power supply per 2-SOP-27.1.6 This Step continued on thc nrxt page. 24 of 28 Numtier : 2- ECA-0.0 o Bus SA: Title: Revision Number: LOSS OF ALL AC POWER REV. 2 a. MCCs: o MCC 26B o MCC 27A b. 24 Battery Charger in service c. 24 Static Inverter on alternate power supply per 2-SOP-27.1.6 25 of 28 Nurnoer : 1 i t.1 e : 2 - ECA-0.0 LOSS OF ALL AC POWER NOTE If RCP seal cooling was previously isolated, further cooling of the RCP seals will be established by natural circulation cooldown as directed in subsequent procedures.

Revision Number: REV. 2 27. Select Recovery Procedure:

a. Check RCS subcooling based on a. Go to 2-ECA-0.2, LOSS OF ALL core exit TCs - GREATER THAN AC POWER RECOVERY WITH SI VALUE OBTAINED FROM TABLE: REQUIRED, Step 1. 0 - 400 401 - 800 801 - 1200 1201 - 2500 52 (83) 36 (49) 23 (30) 19 (26) b. Check PRZR level - GREATER b. GO to 2-ECA-0.2, LOSS OF ALL THAN 14% (33% FOR ADVERSE AC POWER RECOVERY WITH SI CONTAINMENT)

REOUIRED, Step 1. c. Check if SI equipment - C. GO to 2-ECA-0.1, LOSS OF ALL ACTUATED WITH RESULTANT AC POWER RECOVERY WITHOUT SI INJECTION FLOW UPON AC POWER REQUIRED, Step 1. RESTORATION

d. Gn to 2-ECA-0.2.

LOSS OF All ~~ AC POWER RECOVERY WITH SI REQUIRED, Step 1 END 26 of 28 Number: 1itie: 2- ECA-0.0 LOSS OF ALL AC POWER ATTACHMENT 1 (Attachment page 1 of 1) CONTAINMENT ISOLATION VALVES llevisiorl Number: REV. 2 1. 2. The followina valves will close on Phase A isolation:

VALVE NAME CCW from excess letdown Hx CCW to excess letdown Hx Vent header from RCDT Gas analyzer PRT Gas analyzer RCDT Letdown from regenerative HX Letdown oriface control stop valves Make-up to PRT Containment sump pumps to WDS - hold-up tank Instrument air to containment RCDT to WDS - hold-up tank SG blowdown and sampling system Radiation monitor return to containment Accumulator sampl es Sample - pressurizer steam Sample - pressurizer liquid Sample - RCS loops SJAE to containment Hi-Rad sample system return to containment sump Recirculation pump discharge sample line Accumulator NZ Supply Line Stop VALVE NUMBER(s 1 796, 793 798, 791 1786, 1787 548, 549 1788, 1789 201, 202 ZOOA, 2008, 2OOC 519, 552 1723, 1728 1702, 1705 PCV - 1228 PCV-1214, 1214A PCV-1215, 1215A PCV-1216, 1216A PCV-1217, 1217A PCV-1234, 1235 PCV-1236, 1237 9566, 956H 956A, 956B 956C. 9560 21, 22, 23 MOV-956E, 956F 1229, 1230 MOV-4399, 5132 MOV-YYOA, YYOB 863 The followinq valves will close on Phase B isolation:

VALVE NAME VALVE NUMBER(s1 Component cooling from RCS thermal barrier return MOV-789, FCV-625 Component cooling from RCS motor bearing return MOV-786, 784 Component cooling to RCS pumps MOV-769, 797 Seal water return containment isolation valve MOV - 222 END 27 of 28

~ Nunibf r : iitle: Revision Number': 2- ECA-O .O LOSS OF ALL AC POWER REV. 2 - ATTACHMENT 2 (Attachment page 1 of 1) 480V EQUIPMENT LOAD RATINGS 1 Use the fol!owinq table to determine 48OV eauioment load ratinqs: EOUIPMENT 21 SERVICE WATER PUMP 22 SERVICE WATER PUMP 23 SERVICE WATER PUMP 24 SERVICE WATER PUMP 25 SERVICE WATER PUMP 26 SERVICE WATER PUMP PRLR CONTROL HEATERS 21 PRZR BU HEATERS 22 PRZR BU HEATERS 23 PRZR BU HEATERS 21 AFW PUMP 23 AFW PUMP 21 FAN COOLER UNIT 22 FAN COOLER UNIT 23 FAN COOLER UNIT 24 FAN COOLER UNIT 25 FAN COOLER UNIT 21 SI PUMP 22 SI PUMP 23 SI PUMP 21 SPRAY PUMP 22 SPRAY PUMP 21 RHR PUMP 22 RHR PUMP 21 CHARGING PUMP 22 CHARGING PUMP 23 CHARGING PUMP 21 RECIRC PUMP 22 RECIRC PUMP 21 CCW PUMP 22 CCW PUMP 23 CCW PUMP 21 LIGHTING TRANSFORMEF 22 LIGHTING TRANSFORMEF 23 LIGHTING TRANSFORMEF TURBINE AUX OIL PUMP STATION AIR COMPRESSOR 282 KW 282 KW 485 KW 250 KW 250 KW 316 KW 350 KW 150 KW 299 KW 228 KW 225 KW 93 KW 22 DG BUS 2A BUS 3A 282 KW OR 282 KW 282 KW OR 282 KW 485 KW 250 KW 316 KW 228 KW 554 KW 384 KW 250 KW 316 KW 303 KW 150 KW 150 KW (N) 225 KW 23 DG BUS 6A 282 KW 282 KW 277 KW 384 KW 250 KW 345 KW 350 KW 303 KW 150 KW 299 KW 228 KW 150 KW (E) 112 KW END 28 of 28