ML17261A988
| ML17261A988 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/23/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261A978 | List: |
| References | |
| AP-RHR.2, NUDOCS 9003080340 | |
| Download: ML17261A988 (26) | |
Text
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AP-RHR.2 TITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 1 of 11 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE 0
P T SUPERINT DE T
'L 8 cd 0
EFFECTIVE DATE QA X
NON-QA CATEGORY 1.0 I
REVIEWED BY:
GINNASTATION START:
DATE TIME CC VIi-'LETEC):
DATE TIME'003080340 900227 PDR ADOCK 05000244 FNu Q
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AP-RHR. 2 LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 2 of 11 A.
PURPOSE This procedure provides guidance necessary for maintain-ing core cooling and protecting the reactor core-in the event that RHR cooling is lost during RCS reduced inventory operation, (i.e.,
at indicated "B" Loop Levels of less than 64 inches).
B.
ENTRY CONDITIONS/SYMPTOMS 1.
SYMPTOMS The symptoms of (Loss of RHR At RCS Reduced Inventory Conditions) are:
a.
Annunciator A-20, RESIDUAL HEAT REMOVAL LOOP LO FLOW 2900 GPM (Set at 400 GPM per 0-2.2 in RHR Cooling mode) alarm is lit, or b.
Unexpected increase in RCS temperature while on RHR cooling at low loop levels, or c.
Erratic or no flow on FI-626, or d.
Annunciator J-9, Safeguard Breaker Trip alarm lit.
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AP-RHR. 2 TITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 3 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 1
Establish CNMT Closure 0-2.3.1A, CONTAINMENT CLOSURE CAPABILITY DURING RCS REDUCED INVENTORY OPERATION, Step 5.8, while continuing with this procedure 2
Check RHR Pumps AT LEAST ONE RUNNING Go to Step 7.
CAUTION DO NOT START A SECOND RHR PUMP UNTIL THE CAUSE OF THE ERRATIC FLOV OR LOSS OF FLOV ON THE FIRST PUMP HAS BEEN DETERMINED AND CORRECTED.
3 Check RHR Flow GREATER THAN 200 GPM AND STABLE Perform the following:
a.
Stop all running RHR pump(s).
b.
Go to Step 7.
4 Verify CCW Operation:
o CCV pumps - AT LEAST ONE RUNNING o
CCV To RHR Hxs, MOV-738A and MOV-738B -
OPEN AS NECESSARY o
CCV temperature and flow alarms
- EXTINGUISHED Perform the following:
- a. Restore CCV to RHR:
o Start the standby CCW pump if it is not running.
o Open MOV-738A and MOV-738B, as necessary.
- b. IF CCV can NOT be restored, THEN refer to AP-CCV.3, LOSS OF CCW-PLANT SHUTDOWN, Step l.
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AP-RHR.2 TITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 4 of ll STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5 Verify RHR Alignment - NORMAL Align valves as required.
(Refer to Attachment'.
A) 6 Check RCS Temperature:
a.
RCS temperature
- STABLE OR DECREASING b.
Go to Step 12
- a. Return to Step 2.
7 Check If RCS Loop Level Must Be Raised:
a.
RCS loop level - LESS THAN 30" ON B LOOP LEVEL INDICATOR
- a. IP RCS loop level is greater than 30",
THEN start an available RHR pump and go to Step 9 immediately.
-~
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AP-RHR.2 TITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 5 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION BEFORE RAISING LOOP LEVEL, THE S/G OFFICE SHOULD BE NOTIFIED.
\\
8 Increase RCS Loop Level By The Following Methods, Listed in Preferential Order of Use:
- a. Gravity feed method:
- 1) Close RHR pump discharge valve to loop B cold leg, MOV-720
WHEN B loop level indicator greater than 30 in.,
THEN close MOV-856
" 3) IF RCS loop level NOT increasing, THEN close MOV-856, open MOV-720, AND go to Step 8b.
- 5) Open RHR pump discharge valve to B loop cold leg, MOV-720
- 6) Start one RHR pump 7)
Go to Step 9 immediately
- 5) IF MOV-720 does NOT open, THEN open core deluge valves MOV-852A and MOV-852B.
This Step continued on the 'next page.
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AP-RHR.2 LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 6 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED (Step 8 continued from previous page)
- b. Charging to intact loop cold leg method:
- 1) Check B loop cold leg-INTACT
- 2) Open charging line valve to loop B cold leg, AOV-294
- 3) Verify HCV-142 demand at OX
- 4) Start operable charging pump and increase flow to maximum
WHEN B loop level indicator greater than 30 in.,
THEN stop operating charging pump
- 7) Close charging line valve to loop B cold leg, AOV-294
- 8) Start one RHR pump This Step continued on the next page.
- 1) IF A loop cold leg intact, THEN go to Step 8c.
IF A loop cold leg NOT
- intact, THEN go to Step 8d.
- 4) IF charging pump will NOT
- start, THEN:
a) Close AOV-294.
b)
Go to Step 8d.
- 5) IF RCS loop level NOT increasing as expected, THEN:
a) Stop operating charging pump b) Close AOV-294.
, c) IF A loop cold leg intact, go to Step 8c.
d) IF A loop cold leg NOT
- intact, go to Step 8d.
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AP-RHR. 2 TITLE:
LOSS OF RHR 'WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 7 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED (Step 8 continued from previous page) 9)
Go to Step 9 immediately
- c. Charging to A loop cold leg method:
- 1) Open alternate charging line to loop A cold leg, AOv-392B
- 2) Start operable charging pump and increase flow to maximum
WHEN B loop level indicator greater than 30 in.,
THEN stop operating charging pump
- 5) Close alternate charging line to loop A cold leg, AOV-392B
- 6) Start one RHR pump 7)
Go to Step 9 immediately
- 2) IP charging pump will NOT
- start, THEN:
a) Close AOV-392B.
b)
Go to Step Sd.
- 3) IP RCS loop level NOT increasing as expected, THEN:
a) Stop operating charging pump.
b) Close AOV-392B.
c) Go,to Step Sd.
This Step continued on the next page.
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AP-RHR. 2 TITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 8 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED (Step 8 continued from previous page)
- d. Safety injection to loop hot legs method:
- 1) Open loop hot leg SI inlet, valves MOV-878A and/or MOV-878C
- 2) Open SI pumps suction valves MOV-825A and/or MOV-825B
- 3) Start operable safety injection pump
VHEN B loop level indicator greater than 30 in.,
THEN stop operating safety injection pump
- 6) Close SI pumps suction valves
~ MOV-825A
~ MOV-825B
- 7) Close loop hot leg SI inlet valves
~ MOV-878A
~ MOV-878C.
- 8) Start one RHR pump 9)
Go to Step 9 immediately
- 4) IP RCS loop level NOT increasing as expected,
~TH a) Stop operating SI pump.
b) Close loop hot leg inlet valves.
~ MOV-878A
~ MOV-878C c) Close SI pump suction valves.
~ MOV-825A MOV-825B d) Return to Step l.
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AP-RHR.2 TITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV 2
PAGE 9 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9 Verify RHR Flow:
a.
RHR flow - GREATER THAN 200 GPM AND STABLE b.
Go to Step 12
- a. IF an RHR pump is running with less than 200 gpm flow or erratic flow is indicated, THEN:
- 1) Stop running RHR pump.
- 3) Start one RHR pump.
4)
Go to Step 10 immediately..
10 Verify RHR Flow:
a.
RHR flow - GREATER THAN 200 GPM AND STABLE b.
Go to Step 12
- a. IF adequate RHR flow can NOT be established, THEN perform the following:
- 1) Stop running RHR pump(s).
- 2) Evacuate CNMT.
- 3) Check to assure that CNMT closure is completed or nearing completion.
5)
Go to Step 11.
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AP-RHR.2 TLTLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV 2
PAGE 10 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 11 Verify Maintenance Notified And Continue Attempts To Restore Inoperable RHR Pumps Or RHR Flow:
o Maintenance
- NOTIFIED o
Attempts continued to restore inoperable RHR pumps OR flov o
Go to Step 12 12 Establish Monitoring of RCS Temperature:
o RCS temperature
- MONITORING ESTABLISHED 13 Check With Higher Supervision:
o Higher supervision
- NOTIFIED 14 Check Alternatives For Long Term Cooling:
o Long term cooling alternatives-EVALUATED 15 Check For Site Contingency Classification:
o Site contingency classification REFER TO SC-100, GINNA STATION EVENT EVALUATION AND CLASSIFICATION
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AP-RHR.2
'ITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE ll of ll STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 16 Check For NRC Reporting Requirements:
o NRC reporting requirements-REFER TO 0-9.3, NRC IMMEDIATE NOTIFICATION 17 Verify RHR Cooling:
a.
RHR cooling normal o
RHR cooling - RESTORED o
RCS temperature
- STABLE OR DECREASING
- b. Return - REQUIRED PLANT OPERATION
- a. Return to Step l.
-END-
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AP-RHR.2 TITLE:
LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS REV:
2 PAGE 1 of 1 ATTACHMENT A NORMAL RHR COOLING VALVE ALIGNMENT RHR from Loop A Hot Leg RHR to Loop B Cold Leg RHR Letdown to CVCS MOV-700 Open MOV-701 Open MOV-720 Open MOV-721 Open HCV-133 Open RHR Pump Discharge Cross-Connect..........
V-709C V-709D Open Open RHR Hx Bypass V-712A V-712B Open Open FCV-626 as desired RHR From 1A RHR Hx.......................
HCV-625 RHR From 1B RHR Hx.......................
HCV-624 RHR Supply Valve From RWST...............
MOV,-856 RHR Pump Suction Valves as desired as desired Closed A RHR Pump o
o
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B RHR Pump MOV-704A Open MOV-704B Open
t
EMERGENCY PROCEDURES INDEX ISSUED: 01/08/92 TITLE REV DATg E-0 REACTOR TRIP OR SAFETY INJECTION 16 91/05/03 E-1 LOSS OF REACTOR OR SECONDARY COOLANT 10 91/05/03 E-2 FAULTED STEAM GENERATOR ISOLATION 4
90/04/09 E-3 STEAM GENERATOR TUBE RUPTURE 12 91/07/26
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