ML17250B108
| ML17250B108 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| ECA-1.2, NUDOCS 9004200671 | |
| Download: ML17250B108 (13) | |
Text
EOP:
ECA-1.2 TITLE:
LOCA OUTSIDE CONTAINMENT REV 2
PAGE 1 of 9 ROCHESTER GAS AND ELECTRIC CORPORAT N
GINNA STATION NTROLLED COPY NUMBER CHNICAL REV1E PORC REVIEW DA 4 el l~
P l NT UPERIN EN NT, v(~le EFFECTIVE DATE QA NON-Q CATEGORY 1.0 GINNASTATION START:
DATE REVIEWED BY COMPLETED.
9004200671 800410 l~
PDR',
- ADOCN,/05000244 J
P'NU
EOP:
ECA-1.2 LOCA OUTSIDE CONTAINMENT REV:
2 PAGE 2 of 9 A.
PURPOSE This procedure provides actions to identify and isolate a
LOCA outside containment.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
E-O, REACTOR TRIP OR SAFETY INJECTION, and E-l, LOSS OF REACTOR OR SECONDARY COOLANT, on abnormal r'adiation in the auxiliary building due to a loss of RCS inventory outside containment.
r
EOP:
ECA-1.2 LOCA OUTSIDE CONTAINMENT REV 2
PAGE 3 of 9 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 Verify Proper RHR Normal Cooling Valve Alignment:
o MOV-700 and MOV-701, RHR suction valves from A hot leg - CLOSED o
MOV-720 and MOV-721, RHR discharge valves to B cold leg-CLOSED Manually close valves.
IF neither MOV-700 nor MOV-701 can be closed, THEN perform the following:
a.
Stop any running RHR pumps.
- b. Close the following valves:
~ MOV-856, RHR suction from RWST
~ MOV-704A and MOV-704B, RHR pump suction cross tie valves IF neither MOV-720 nor MOV-721 can be closed, THEN:
a.
Stop any running RHR pump.
'. Close the following valves:
~ HCV-624 and HCV-625, RHR Hx outlet valves
~ HCV-626, RHR Hx bypass valve, if open
EOP:
ECA-1.2 TITLE:
LOCA OUTSIDE CONTAINMENT REV:
2 PAGE 4 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check CVCS Valve Alignment:
- a. Verify the following valves-CLOSED
~, AOV-310, Excess letdown isolation valve
~ AOV-296, Auxiliary spray valve
~ AOV-392A, Charging line isolation valve to loop B hot leg
- a. Manually close valves.
IF AOV-310 can NOT be closed, THEN ensure seal return isolation valve, MOV-313, closed.
IF AOV-296 or AOV-392A"can NOT be closed, THEN perform the following:
- 1) Manually close HCV-142 charging line flow control valve.
- b. Verify the following CI valves-CLOSED
~ MOV-313, seal return isolation valve
~ AOV-371, letdown isolation valve
- 2) Dispatch AO with RVST area key to locally close V-384A.
- b. Manually close valves.
IF either valve can NOT be
- closed, THEN dispatch AO to locally isolate flowpath as necessary.
o Close V-315A, seal return filter inlet, to isolate MOV-313 (reach rod outside SURF room).
o Close V-204A, NRHX inlet, to isolate AOV-371 (inside NRHX room).
EOP:
ECA-1.2 LOCA OUTSIDE CONTAINMENT 0
REV:
2 PAGE 5 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3
Check Charging Valves For Backflow:
a.
Check charging pumps - ALL PUMPS ORR
- b. Close charging line isolation valve to loop B cold, AOV-294 c.
Check RCS pressure.-
INCREASING d.
Go to Step 7
a.
Go to Step 4.
- b. Perform the following:
- 1) Manually close HCV-142, charging line flow control valve.
- c. Restore charging line as necessary and go to Step 4.
EOP ECA-1.2 TITLE:
LOCA OUTSIDE CONTAINMENT REV:
2 PAGE 6 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
RCP Seal Injection Flow To Each RCP GREATER THAN 6 GPM IR CCW is being supplied to either RCP thermal barrier, THEN perform the following:
a.
Ensure at least one charging pump running.
- b. Increase charging pump speed and adjust charging line flow control valve (HCV-142) as necessary to establish required seal in)ection flow.
c.
Go to Step 5.
IP neither CCW pump is running, THEN perform the following:
a.
~ MOV-759A
~ MOV-759B b.
Go to Step 6.
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EOP:
ECA-1.2 LOCA"OUTSIDE CONTAINMENT REV:
2 PAGE 7 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5
Check RCP Thermal Barrier For Leakage:
- a. Close RCP A thermal barrier return valve, AOV-754A
- b. Check RCS pressure
- INCREASING c.
Go to Step 7
- d. Close RCP B thermal barrier return valve, AOV-754B e.
Check RCS pressure
- INCREASING
- f. Go to Step 7
- b. Restore RCP A thermal barrier cooling, if desired, and go to Step 5d.
- d. Close RCP B
CCW return valve, MOV-759B.
- e. Restore RCP B thermal barrier cooling, if desired and go to Step 6.
EOP:
ECA-1.2 LOCA OUTSIDE CONTAINMENT REV 2
PAGE 8 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6
Check Safeguards Valves For Backflow:
Go to Step 7.
- c. Dispatch AO with locked valve key to locally close breakers for SI pump discharge to cold leg isolation valves
~ MOV-878B, MCC D position SC
~ MOV-878D, MCC D position SF
- d. Close SI pump discharge to cold leg B (MOV-878B) and check for pressure increase e.
Open breakers for MOV-878B and MOV-878D
- a. Perform the following:
- 1) Open MOV-852A.
- 2) Close RHR pump discharge to Rx vessel deluge (MOV-852B).
- 3) Check for RCS pressure increase.
IF NOT, THEN open MOV-852B and go to Step 6c.
- d. Perform the following:
- 1) Open MOV-878B.
- 2) Close SI pump discharge to cold leg A (MOV-878D).
- 3) Check for RCS pressure increase.
IF NOT, THEN open MOV-878D.
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I EOP:
ECA-1.2 TlTLE:
LOCA OUTSIDE CONTAINMENT REV:
2 PAGE 9 of 9 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7
Check If Break Is Isolated:
a.
RCS pressure
- INCREASING b.
Go to E-l, LOSS OP REACTOR OR SECONDARY COOLANT, Step 1
a.
Go to ECA-1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step l.
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