ML20198C041
| ML20198C041 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 12/14/1998 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17265A479 | List: |
| References | |
| FR-C.1, NUDOCS 9812210284 | |
| Download: ML20198C041 (19) | |
Text
lbf: llM, gl REV: 16 i
4 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING 4
PAGE 1 of 18 O
V ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER kb o (Nblmh RESPONSIBLE @ AGER l2-/4-0f EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
O D
9812210284 981214
- PDR ADOCK 05000244 >
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E0P: TITLE:
REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING i
PAGE 2 of 18 O A. PURPOSE - This procedure provides actions to restore core cooling.
B. ENTRY CONDITIONS / SYMPTOMS
- 1. ENTRY CONDITIONS - This procedure is entered from: I
- a. F-0.2, CORE COOLING Critical Safety Function Status ,
Tree, on a RED condition.
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REV: 16 ER-C.1 RESPONSE TO INADEQUATE CORE COOLING 1 PAGE 3 of 18 O
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STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NDIE: Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+05 R/hr.
- 1 Monitor RWST Level - GREATER Perform the following:
THAN 28%
TRANSFER TO COLD LEO RECIRCULATION.
2 Verify SI Pump Suction Aligned to RWST:
- a. Verify SI pump suction valves a. Ensure at least one SI pump from RWST - OPEN suction valve from RWST open.
- MOV-825A
= MOV-825B e MOV-825B a
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E0P: TITLE:
REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING S
PAGE 4 of 18 t' %
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STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED l
CAUTION RHR PUMPS SHOULD NOT BE RUN LONGER THAN 1 HOUR WITHOUT CCW TO THE RHR HEAT EXCHANGERS. .
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1 3 Verify SI Pump And RHR Pump Emergency Alignment:
- a. RHR pump discharge to Rx vessel a. Ensure at least one valve open. i deluge - OPEN l 1
e MOV-852A
- MOV-852B l
- b. Verify both RHR pumps - RUNNING b. Manually start pumps I
- c. Verify SI pump C - RUNNING c. Manually start pump on available bus, l
- d. Verify SI pump A - RUNNING d. Perform the following:
, O 1) Ensure SI pumps B and C running.
- 2) Ensure SI pump C aligned to discharge line A:
o MOV-871B closed l o MOV-871A open
- 3) Go to Step 4.
- e. Verify SI pump B RUNNINC e. Perform the following:
- 1) Ensure SI pumps A and C l running.
- 2) Ensure SI pump C aligned to discharge line B:
o MOV-871B open o MOV-871A closed l
- 3) Go to Step 4.
- f. Verify both SI pump C discharge f. Manually open valves as valves - OPEN necessary.
. MOV-871A
. MOV-871B i
Os
'* ' E0P: TITLE:
REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING
-4 PAGE 5 of 18 STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED
- 4 Verify SI Flow In Both Trains
- Perform the following:
l o SI line loop A and B flow a. Manually start pumps and align i indicators - CHECK FOR FLOW valves as necessary.
o RHR loop flow indicator - CHECK b. Establish maximum charging flow. ,
FOR FLOW J
I l 5 Check RCP Support Conditions:
. a. Verify Bus 11A or 11B - ENERGIZED a. Restore power to Bus 11A or 11B d
(Refer to ER-ELEC.1, RESTORATION OF OFFSITE POWER).
- b. Check other RCP support b. Continue attempts to establish l conditions (Refer to Attachment RCP support conditions.
RCP START)
I 6 Check SI ACCUM Discharge J.E SI ACCUM discharge valves closed i J . Valves - OPEN after ACCUM discharge, THEN go to Step 7. IF NOT, THEN perform the l- . MOV-841 following:
. MOV-865
- a. Dispatch A0 with locked valve key to locally close breakers for SI ACCUM discharge valves.
. MOV-841, MCC C position 12F e MOV-865, MCC D position 12C
- b. Open SI ACCUM discharge valves.
= ACCUM A. MOV-841
. ACCUM B, MOV-865 l
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REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING
- 4. $ PAGE 6 of 18 i i'
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STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 7 Check Core Exit T/Cs - LESS Go to Step 10.
THAN 1200 F 8 Check RVLIS Indication:
- a. RCPs - BOTH SECURED a.~ Return to procedure and step in effect
[55% adverse CNMT] to Step 1. IF NOT, IllEN go to ,
Step 9. j
- c. Return to procedure and step in i effect !
9 Check Core Exit T/Cs:
1
- a. Temperature - LESS THAN 700* F a. E decreasing, THEN return to I Step 1. IF NOT, THEN go to O)
( Step 10. I
- b. Return to procedure and step in effect
. .......................................c CAUTION IF OFFSITE POWER IS LOST AFTER 51 RESET. THEN SELECTED SW PUMPS AND ONE CCW PUMP WILL AUTO START ON EMERGENCY D/G. MANUAL ACTION WILL BE REQUIRED TO RESTART SAFEGUARDS EQUIPMENT.
10 Reset SI O
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l REV: 16 l FR-C.1 RESPONSE TO INADEQUATE CORE COOLING l
PAGE 7 of 18 l -
STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED l
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11 Reset CI:
- a. Depress CI reset pushbutton l- b. Verify annunciator A-26 CNMT b. Perform the following:
l ISOLATION - EXTINGUISHED
- 1) Reset SI.
- 2) Depress CI reset pushbutton.
l NOTE: This procedure should be continued while obtaining CNMT hydrogen sample in Step 12.
12 Check CNMT Hydrogen Concentration:
- a. Direct RP to start CNMT hydrogen monitors as necessary l ['i b. Hydrogen concentration - LESS b. Consult TSC to determine if V THAN 0.5% hydrogen recombiners should be placed in service.
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E0P: TITLE:
REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING PAGE 8 of 18
. n v STEP ---
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED CAUTION o IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
o A FAULTED OR RUPTURED S/G SHOULD NOT BE USED IN SUBSEQUENT STEPS UNLESS NO INTACT S/G IS AVAILABLE.
HQIE: TDAFW pump flow control valves fail open on loss of IA.
- 13 Monitor Intact S/G Levels:
- a. Narrow range level - GREATER a. Maintain total feed flow greater THAN 5% [25% adverse CNMT) than 200 gpm until narrow range level greater than 5% [25%
adverse CNMT} in at least one
~
If total feed flow greater than 200 gpm can HQI be established, IHEH perform the following:
- 1) Continue attempts to establish a heat sink in at least one S/G (Refer to ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
- 2) Go to Step 23.
- b. Control feed flow to mainta2n narrow range level between 11%
[25% adverse CNMT] and 50%
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E0P: TITLE:
REV: 16 FR-C.1- RESPONSE TO INADEQUATE CORE COOLING l s PAGE 9 of 18 l
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! - STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED ,
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......................................... j l CAUTION IF ANY PRZR PORV OPENS BECAUSE OF HIGH PRZR PRESSURE. IT SHOULD BE CLOSED ,
AFTER PRESSURE DECREASES TO LESS THAN 2335 PSIG (REFER TO STEP 14B). l 1
l .........................................
l 14 Check RCS Vent Paths: l
- a. Power to PRZR PORV block valves a. Restore power to block valves l - AVAILABLE unless block valve was closed to isolate an open PORV:
l . MOV-515. MCC D position 6C l . MOV-516. MCC C position 6C l b. PORVs - CLOSED b. H PRZR pressure less than
- 2335 psig. THEN manually close
! PORVs. i
! bQ H any PORV can NOT be closed.
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THEN manually close its block ,
! valve. 1
- c. Block valves - AT LEAST ONE OPEN c. Open one block valve unless it was closed to isolate an open PORV.
- d. Rx vessel head vent valver. d. Manually close valves.
CLOSED
. S0V-590
. S0V-591
. S0V-592
. SOV-593 l
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E0P: TITLE:
REV: 16 E'R-C .1 - -RESPONSE TO INADEQUATE CORE COOLING t-PAGE 10 of 18 I
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STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 15 Establish Condenser Steam Dump Manual Control
- a. Verify condenser available: a. Place intact S/G ARV controller in MANUAL and go to Step 16.
o Intact S/G MSIV - OPEN o Annunciator G-15. STEAM DUMP ARMED - LIT l
- b. Place steam dump mode selector switch in MANUAL
- c. Place steam dump controller in l MANUAL l N0IE.
Q Partial uncovering of S/G tubes is acceptable in the following steps.
16 Depressurize All Intact S/Gs To 200 PSIG:
- a. Dump steam to condenser at a. Manually or locally dump steam maximum rate at maximum rate using S/G ARVs.
IF NOT. TEEN go to Step 23.
- c. Check RCS hot leg temperatures c. IE RCS hot leg temperatures BOTH LESS THAN 400*F decreasing. THEN return to
- Step 13.
IF NOT TEEN go to Step 23. I
- d. Stop S/G depressurization i
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.FR-C.1 RESPONSE TO INADEQUATE CORE COOLING PAGE 11 of 18 i G
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STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 17 Check If SI ACCUMs Should Be Isolated:
j a. RCS hot leg temperatures - BOTH a. Go to Step 23.
LESS THAN 400* F
- b. Dispatch A0 with locked valve key to locally close breakers i
for SI ACCUM discharge valves if l-necessary l
- d. Close SI ACCUM discharge valves d. Perform the following
- ACCUM A, MOV-841 1) Reset CI.
.# 2) Ensure two air compressors running.
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l 4) Open vent valves for l unisolated SI ACCUMs.
- 5) Open HCV-945.
l e. Locally reopen breakers for MOV-841 and MOV 865 t
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REV: 16 FR-C.1' RESPONSE TO INADEQUATE CORE COOLING l
i PAGE 12 of 18 j-v -
STEP -
ACTION / EXPECTED RESPONSE RESPONSENOTOBTAINEDl l
l 18'Stop Both RCPs 19 Dump Steam to Condenser At Manually or locally dump steam at Maximum Rate To Depressurize maximum rate using S/G ARVs.
All Intact S/Gs To Atmospheric Pressure 20 Verify SI Flow: Perform the following:
i-o SI line loop A and B flow a. Continue efforts to establish SI indicators - CHECK FOR FLOW flow.
-OR- b. Try to establish charging flow.
o RHR loop flow indicator - CHECK c. J.E core exit T/Cs less than FOR FLOW 1200* F. THEN return to Step 19.
IF NOT, THEN go to Step 23.
21 Check Core Cooling:
- a. Core exit T/Cs - LESS THAN 1200* F a. Go to Step 23,
- b. RCS hot leg temperatures BOTH b. Return to Step 19.
LESS THAN 320*F
THAN 77% [82% adverse CNMT]
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, PAGE 13 of 18 1
STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1
4 s l I 22 Go to Appropriate Plant l
, Procedure i l a. Check RWST level - GREATER THAN a. Go to ES 1.3, TRANSFER TO COLD 28% LEG RECIRCULATION, Step 1.
- b. Go to E-1 LOSS OF REACTOR OR SECONDARY COOLANT. Step 17 i
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E0P: TITLE:
REV: 16 FR-C.1 RESPONSE TO INADEQUATE C3RE COOLING PAGE 14 of 18 g- -
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STEP -
ACTION / EXPECTED RESPONSE RESPCNSE NOT OBTAINED
}LQIE: Normal conditions are desired but not required for starting the RCPs.
23 Check If RCPs Should Be Started:
- a. Core Exit T/Cs - GREATER THAN a. Go to Step 24.
1200* F l b. Check if an idle RCS cooling b. Perform the following:
loop is available
- 1) Reset SI.
o Narrow range S/G 1evel -
GREATER THAN 5% (25% adverse 2) Reset CI.
CNMT]
l 3) Ensure two air compressors o RCP in associated loop - running.
AVAILABLE AND NOT OPERATING l 4) Establish IA to CNMT.
- 5) Open all PRZR PORVs and block valves a) H any block valve can NOI be opened. THEN ensure f- power supplied to block valve.
l b) H IA NOT available. TjiEN refer to Attachment N2 PORVS.
l
- 6) H core e.'it T/Cs remain greater than 1200*F. THEN l open Rx vessel head vent valves.
. SOV-590
. SOV-591
. S0V-592
= S0V-593
- 7) Go to Step 24.
- d. Return to Step 23a l
'** E0P: TITLE: 1 REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING,
-a PAGE 15 of 18
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STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 24 Try To Locally Depressurize Use faulted or ruptured S/G.
All Intact S/Gs To Atmospheric Pressure:
o Use intact S/G(s) ARVs l l
0R-o Open TDAFW pump steam supply valve from intact S/G(s)
. S/G A, MOV-3505A j e S/G B, MOV-3504A '
-0R-o Perform the following:
- a. Open intact S/G MSIV bypass valves
- b. Open both priming air ejector i steam inlet valves )
. V-3580 l e V-3581 I
25 Check Core Exit T/Cs - LESS J_E core exit temperatures THAN 1200 F decreasing. THEN return to step 23.
lE core exit temperatures increasing. THEN go to SACRG-1.
SEVERE ACCIDENT CONTROL ROOM GUIDELINE INITIAL RESPONSE step 1.
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TOP: TITLE.:
REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING PAGE 16 of 18 STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1
26 Check If SI ACCUMs Should Be Isolated:
l l a. RHR loop flow indicator - AT. a. Return to Step 23.
LEAST INTERMITTENT FLOW
- b. Dispatch A0 with locked valve key to locally close breakers for SI ACCUM discharge valves if necessary
. MOV-841 MCC C position 12F
= MOV-865 MCC D position 12C
- c. Reset SI.
l I d. Close SI ACCUM discharge valves d. Perform the following:
l t = ACCUM A. MOV-841 1) Reset CI. ,
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- ACCUM B. MOV-865 l lt' 2) Ensure two air compressors l running.
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- ACCUM B. A0V-834B l
l 5) Open HCV-945.
! e. Locally reopen breaker.n for MOV-841 and MOV 865 i-l l
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E0P: TITLE:
REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING j, PAGE 17 of 18 STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 27 Check If RCPs Should Be Stopped:
- a. Both RCS hot leg temperatures - a. Go to Step 28.
LESS THAN 320'W
- b. Stop all RCPs ,
28 Verify SI Flow: Perform the following:
o SI line loop A and B flow a. Continue efforts to establish SI indicators - CHECK FOR FLOW flow.
-OR- b. Try to establish charging flow, o RHR loop flow indicator CHECK c. Return to Step 23.
FOR FLOW 29 Check Core Cooling:
O%
- a. RCPs - BOTH SECURED a. Return to Step 23.
- b. RCS hot leg temperatures LESS b. Return to Step 23.
THAN 320'F
- c. RVLIS level CREATER THAN 71% c. Return to Step 23.
(82% adverse CNMTl i
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REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING PAGE 18 of 18 O -
STEP -
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED t
1 30 Go to Appropriate Plant Procedure
- a. IE PRZR FORVs and head vents
, were opened in Step 23. THEN 4 consult TSC.to evaluate long term status AND continue with l transitions. ;
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- b. Check RWST level - GREATER THAN b. Go to ES-1.3, TRANSFER TO COLD l 4 28% LEG RECIRCULATION. Step 1.
.,. c. Go to E-1. LOSS OF REACTOR OR SECONDARY COOLANT, Step 17.
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REV: 16 FR-C.1 RESPONSE TO INADEQUATE CORE COOLING
- PAGE 1 of 1 i
l FR-C.1 APPENDIX LIST l
)
l TITLE
- 1) ATTACHMENT RCP START (AU-15.0)
- 2) . ATTACHMENT N2 PORVS (AM-12.0) l l
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