ML17250B122
| ML17250B122 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| FR-C.2, NUDOCS 9004200731 | |
| Download: ML17250B122 (30) | |
Text
FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV:
5 PAGE 1 of 14 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE N
SUPERINTEN EN go EFFECTI E DATE QA NON-QA CATEGORY 1.0 REVIEWED BY:
GINNASTATION START:
DATE TlME COMPLETED:
DATE TlME'00420073f 9004i0 PDR ADOCK 05000244 I
PNU IQ,
/
FR-C.2
RESPONSE
TO DEGRADED CORE COOLING REV:
5 PAGE 2 of 14 A.
PURPOSE - This procedure provides actions to restore adequate core cooling.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
F-0.2, CORE COOLING Critical Safety Function Status
- Tree, on any ORANGE condition.
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FR-C.2
RESPONSE
TO DEGRADED CORE COOLING REV:
5 PAGE 3 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10 R/hr.
1 Check RWST Level GREATER THAN 284 Perform the following:
a.
Ensure SI system aligned for cold leg recirculation using Steps 1 through 13 of ES-1.3, TRANSFER TO COLD LEG RECIRCULATION.
b.
Go to Step 4.
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FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV 5
PAGE 4 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2 Verify SI Pump And RHR Pump Emergency Alignment:
a.
RHR pump discharge to Rx vessel deluge OPEN
~ MOV-852A
~ MOV-852B
- b. Verify SI pump C - RUNNING
- c. Verify SI pump A - RUNNING
- d. Verify SI pump B - RUNNING a.
Ensure at least one valve open.
- b. Manually start pump on available bus.
- c. Perform the following:
- 1) Ensure SI pumps B and C
running.
- 2) Ensure.SI pump C aligned to discharge line A:
o MOV-871B closed o
MOV-871A open 3)
Go to Step 4.
- d. Perform the following:
- 1) Ensure SI pumps A and C
running.
- 2) Ensure SI pump C aligned to discharge line B:
o MOV-871B open o
MOV-871A closed
- e. Verify both SI pump C discharge valves OPEN
~ MOV-871A
~ MOV-871B 3)
Go to Step 4.
- e. Manually open valves as necessary.
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FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV!
5 PAGE 5 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3 Verify SI Pump Suction Alignment:
a.
Check BAST level:
o Level - GREATER THAN 10X o
Annunciator B-23, BORIC ACID TANK LO LO LEVEL-EXTINGUISHED
- a. Perform the following:
- 1) Ensure at least one SI pump suction valve from RVST open.
~ MOV-825A
~ MOV-825B
- 2) Ensure at least one valve in each SI pump suction line from BAST closed.
~ MOV-826A or MOV-826B
~ MOV-826C or MOV-826D
- b. Verify SI pump suction valves from BAST -
OPEN
~ MOV-826A
~ MOV-826B
~ MOV-826C
~ MOV-826D
- c. Verify SI pump sucti'on. from RVST
- CLOSED
~ MOV-825A
~ MOV-825B 3)
Go to Step 4.
- b. Ensure both valves in either flow path open.
o MOV-826A and MOV-826B
-OR-o MOV-826C and MOV-826D
- c. Manually align valves as necessary.
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FR-C.2
RESPONSE
TO DEGRADED CORE COOLING REV 5
PAGE 6 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4 Verify SI Flow In Both Trains:
a.
SI line loop A and B flov indicators
- CHECK FOR FLOV b.
RCS pressure
- LESS THAN 250 psig f465 psig adverse CNMT]
c.
RHR loop flov indicator -
CHECK FOR FLOV
- a. Perform the folloving:
- 1) Manually start SI pumps and align valves as necessary.
- 2) Establish maximum charging flov.
b.
Go to Step 5.
- c. Manually start RHR pumps and align valves.
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FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV' PAGE 7 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF ANY PRZR PORV OPENS BECAUSB OF HIGH PRZR
5 Check RCS Vent Paths:
a.
Power to PRZR PORV block valves
- AVAILABLE b.
PORVs - CLOSED
- a. Restore power to block valves unless block valve was closed to isolate an open PORV:
~ MOV-515, MCC C position 6C
~ MOV-516, MCC D position 6C
- b. IF PRZR pressure less than 2335 psig, THEN manually close PORVs.
- c. Block valves - AT LEAST ONE OPEN IF any PORV can NOT be closed, THEN manually close its block valve.
c.
Open one block valve unless it was closed to isolate an open PORV.
d.
Rx vessel, head vent 'valves-CLOSBD
- d. Manually close valves.
'OV-590
~ SOV-591
~ SOV-592
~ SOV-593
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FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV:
5 PAGE 8 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
Normal conditions for running RCPs are desired, but RCPs should not be tripped if normal conditions cannot be established or maintained.
6 Check RCP Status:
- a. At least one RCP - RUNNING
Go to Step 9.
- b. Try to establish support conditions for the operating RCP.
7 Check RVLIS Fluid Fraction
- a. Fluid fraction (any RCP on)-
GREATER THAN 60X
- b. Return to procedure and step in effect.
- a. IF increasing, THEN return to Step l.
IF NOT, then go to Step 8.
8 Check If One RCP Should Be Stopped:
- a. Both RCPs - RUNNING
- b. Stop one RCP c.
Go to Step,10 a.
Go to Step 10.
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FR-C.2
RESPONSE
TO DEGRADED CORE COOLING REV:
5 PAGE 9 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9
Check Core Cooling:
a.
- GREATER THAN 43X [46X adverse CNMT]
- a. IP increasing, THEN return to Step l.
IP NOT, THEN go to Step 10.
- b. Core exit T/Cs - LESS THAN 700'F
- b. IP decreasing, THEN return to Step 1.
IF NOT, THEN go to Step 10.
- c. Return to procedure and step in effect 10 Check SI ACCUM Discharge Valves OPEN
~ MOV-841
~ MOV-865 IP SI ACCUM discharge valves closed after ACCUM discharge, THEN go to Step ll.
IP NOT, THEN perform the following:
~ MOV-841, MCC C position 12F
~ MOV-865, MCC D position 12C b.
Open SI ACCUM discharge valves.
~ ACCUM A, MOV-841
~ ACCUM B, MOV-865
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FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV 5
PAGE 10 of 14 STEP ACTION/EXPECTBD RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IP CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATBR SOURCES POR AFW PUMPS WILL BE NECBSSARY (REFER TO ER-AFW.1, ALTERNATE WATER SUPPLY TO AFW PUMPS).
o A FAULTED OR RUPTURED S/G SHOULD NOT BE USBD IN SUBSEQUENT STEPS UNLESS NO INTACT S/G IS AVAILABLE.
NOTE:
TDAFW pump flov control valves fail open on loss of IA.
11 Check Intact S/G Levels:
- a. Narrov range level - GREATER THAN 5X [25X adverse CNMT]
- b. Control feed flov to maintain narrov range level betveen 17X
[25X adverse CNMT] and 50X
- a. Increase total feed flov to restore narrov range level greater than 5X [25X adverse CNMT] in at least one S/G.
12 Verify Condenser Steam Dump In Manual:
- a. Verify condenser available:
o Intact S/G MSIV -
OPEN
- a. Place intact S/G ARV controller in MANUAL and go to Step 13.
o Annunciator G-15, STEAM DUMP
- LIT
- b. Place steam dump mode selector svitch in MANUAL
- c. Place steam dump controller in MANUAL
0
FR-C.2
RESPONSE
TO DEGRADED CORE COOLING REV:
5 PAGE 11 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION THE FOLLOVING STEP MAY CAUSE A RED PATH CONDITION IN F-0.4, INTEGRITY STATUS TREE.
THIS PROCEDURE SHOULD BE COMPLETED BEFORE TRANSITION TO FR-P.1,
RESPONSE
TO IMMINENT PRESSURIZED THERMAL SHOCK.
13 Depressurize All Intact S/Gs To 200 PSIG:
- a. Maintain cooldown rate in RCS cold legs - LESS THAN 100'F/HR b.
Dump steam to condenser
- b. Manually or locally dump steam from intact S/Gs:
o Use S/G ARVs.
-OR-o Open TDAFV pump steam supply valve(s) for affected S/G(s):
~ S/G A, MOV-3505A
~ S/G B) MOV-3504A
-OR-
- c. Check S/G pressures
- LESS THAN 200 PSIG
- d. Stop S/G depressurization o
Locally perform the following:
o Open intact S/G MSIV bypass valve.
o Open priming air ejector steam isolation valves.
~ V-3580
~ V-3581
- c. Return to Step 11.
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FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV 5
PAGE 12 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION RHR PUMPS SHOULD NOT BE RUN LONGER THAN 1
HOUR WITHOUT CCW TO THE MAIN RHR HEAT EZCHANGERS.
14 Check RHR Pumps RUNNING Manually start pumps as necessary.
15 Check If SI ACCUMs Should Be Isolated:
a.
RCS hot leg temperatures BOTH LESS THAN 400'F
- b. Close SI ACCUM discharge valves
~ MOV-841
~ MOV-865 a.
Go to Step 17.
- b. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs.
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
- c. Locally reopen breakers for MOV-841 and MOV-865 CAUTION SYMPTOMS FOR'R-C.l,
RESPONSE
TO INADEQUATE CORE COOLING, SHOULD BE CLOSELY MONITORED DURING SUBSEQUENT STEPS.
16 Stop All RCPs
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FR-C.2 LITLE:
RESPONSE
TO DEGRADED CORE COOLING REV 5
PAGE 13 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 17 Depressurize All Intact S/Gs To Atmospheric Pressure:
- a. Maintain cooldovn rate in RCS cold legs - LESS THAN 100'F/HR b.
Dump steam to condenser
- b. Manually or locally dump steam from intact S/Gs:
- 1) Use S/G ARVs.
- 2) Open TDAFV pump steam supply valve(s) for affected S/G(s):
~ S/G A, MOV-3505A
~ S/G B, MOV-3504A
- 3) Locally perform the folloving:
o Open intact S/G MSIV bypass valve.
o Open priming air ejector steam isolation valves.
~ V-3580
~ V-3581 18 Verify SI Flow:
o SI line loop A and B flov indicators
- CHECK FOR FLOV Perform the folloving:
- a. Continue efforts to establish SI flov.
-OR-o RHR loop flow indicator - CHECK FOR FLOV
- b. Try to establish maximum charging flov.
- c. Return to Step 17.
4 J
FR-C.2 TITLE:
RESPONSE
TO DEGRADED CORE COOLING REV 5
PAGE 14 of 14 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 19 Isolate Both SI ACCUMs:
a.
Close SI ACCUM discharge valves
~ MOV-841
~ MOV-865
- b. Locally reopen breakers for MOV-841 and MOV-865
- a. Vent any unisolated ACCUMs:
- 1) Open vent valves for unisolated SI ACCUMs.
~ ACCUM A, AOV-834A
~ ACCUM B, AOV-834B
- 2) Open HCV-945.
20 Stop All RCPs 21 Check Core Cooling:
- GREATER THAN 68X t73X adverse CNMT]
o Both RCS hot leg temperatures-LESS THAN 325'F Return to Step 17.
22 Go to Appropriate Plant Procedure a.
Check RUST level - GREATER THAN 28X b.
Go to E-l, LOSS OF REACTOR OR SECONDARY COOLANT, Step 17 a.
Go to ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Step 1.
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FR-C.2
RESPONSE
TO DEGRADED CORE COOLING REV 5
PAGE 1 of 1 FR-C.2 APPENDIX LIST TITLE 1)
ATTACHMENT RCP START PAGES