ML17261B112
| ML17261B112 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 06/01/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261B111 | List: |
| References | |
| AP-RHR.1, NUDOCS 9007310040 | |
| Download: ML17261B112 (25) | |
Text
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AP-RHR.1 TITLE:
LOSS OF RHR REV:
8 PAGE 1 of 8 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC. REVIEW DATE
"-Ql-a LANT SUPERINT DENT l.- l-f.
EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
8 INNASTATlON START'ATE TfME COMPLETED:
DATE TflVf E'007320040 900725 PDR ADOCK 05000244 P
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AP-RHR.1 LOSS OF RHR REV:
8 PAGE 2 of 8 A.
PURPOSE This procedure provides guidance in the event of a loss of RHR cooling at or above normal loop levels.
(i.e.
at. indicated "B" loop levels of 64 inches or greater)
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS - This procedure is entered from; a.
FR-C.3,
RESPONSE
TO SATURATED CORE COOLING, b.
AP-CCW.3, LOSS OF CCW PLANT SHUTDOWN 2.
SYMPTOMS The symptoms of (Loss of RHR) 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 lit, or b.
Annunciator J-9, SAFEGUARD BREAKER TRIP alarm lit, or c.
Unexpected increase in RCS temperature while on RHR cooling, or d.
Erratic or no flow on FI-626, RHR Loop Flow
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AP-RHR. 1 TITLE:
LOSS OF RHR REV:
8 PAGE 3 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
IP at any time during the performance of this procedure the indicated "B" loop level falls below 64 inches, THEN go to AP-RHR.2, LOSS OF RHR WHILE OPERATING AT RCS REDUCED INVENTORY CONDITIONS.
1 Check RHR Pumps:
o RHR pumps - AT LEAST ONE RUNNING AND NO TRIP INDICATION IF 2 RHR pumps were running AND 1
has tripped, THEN perform the following:
- a. Ad)ust cooling as necessary.
- b. IF S/G cooling also required, THEN go to Step 9.
IF 1
RHR pump was running AND has
- tripped, THEN start the other RHR pump AND go to Step 15.
IP all available RHR pumps have
- tripped, THEN perform the following:
- a. Reset and attempt to restart 1
RHR pump.
- b. IP RHR pump starts, THEN go to Step 7.
- c. IP RHR cannot be restored, THEN go to Step 9.
CAUTION DO NOT START -A SECOND RHR PUMP UNTIL THE CAUSE OF THE ERRATIC FLOW OR LOSS OP FLOW ON THE FIRST PUMP HAS BEEN DETERMINED AND CORRECTED.
2 Check RHR Flow:
IF an RHR pump(s) is running with less than 200 gpm flow OR erratic flow is indicated, THEN stop all running RHR pump(s)
AND go to Step 4.
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AP-RHR.l LOSS OF RHR REV:
8 PAGE 4 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3 Verify CCW Operation:
o CCW pumps - AT LEAST ONE RUNNING o
CCW to RHR Hxs, MOV-738A AND MOV-738B -
OPEN AS NECESSARY o
CCW temperature and flow alarms
- EXTINGUISHED To restore CCW to RHR:
o Start the standby CCW pump if it is not running.
o Open MOV-738A AND MOV-738B as necessary.
IF CCW can NOT be restored, THEN continue attempts to restore
- CCW, refer to AP-CCW.3, LOSS OF CCW-PLANT SHUTDOWN AND go to Step 5.
4 Verify RHR Valve Alignment NORMAL (Refer to Attachment A)
IF RHR valve alignment not normal, THEN stop all running RHR pump(s)
AND align valves per Attachment A
as required AND start one RHR pump.
5 Check RCS Temperature:
a.
RCS temperature
- STABLE OR DECREASING b.
Go to Step 16
- removed, THEN go to Step 13.
6 Check PRZR Wide Range Level (LI-433)
GREATER THAN 0 INCHES To restore desired PRZR level, perform the following:
- a. Direct AO to manually open MOV-856 as required.
IF level can NOT be restored quickly enough, THEN manually open MOV-856 from the Control Board.
b.
WHEN desired level obtained,.
THEN close MOV-856.
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AP-RHR.1 LOSS OF RHR REV:
8 PAGE 5 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7 Start At Least 1 RHR Pump:
o RHR pump(s)
- RESET BREAKER AND START ONE PUMP IF both RHR pumps will not start, THEN:
o Notify electricians AND go to Step 9.
8 Check RHR Flow:
a.
RHR flow - AS DESIRED AND STABLE a.
Go to Step 9.
b.
Go to Step 15 9
Check RCP Status:
a.
RCP - AT LEAST ONE RUNNING IF NO RCP running, THEN:
- START, AND start one RCP.
b.
Go to Step 10.
IF an RCP cannot be started, THEN verify conditions for Natural Circulation using Attachment NC.
10 Check S/G Status:
o
" Narrow range level in either S/G
- GREATER THAN 17X
-OR-o AFW flow - AT LEAST 200 GPM AVAILABLE IF S/Gs are not operable, THEN:
b.
Go to Step 15.
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AP-RHR.1 LOSS OF RHR REV' PAGE 6 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED ll Establish Condenser Steam Dump:
o Steam dump - ESTABLISHED IP the condenser is NOT available, THEN:
o Dump steam via S/G ARVs.
12 Check RCS Temperature:
a.
RCS temperature
- STABLE OR DECREASING b.
Go to Step 15
- a. IP dumping steam does not provide adequate
- cooling, THEN initiate S/G blovdown from both S/Gs AND maintain both S/G levels stable by controlling AFW flov AND go to Step 15.
13 Check If 1 RHR Loop Is Operable:
a.
RHR pumps - RUNNING OR START ONE b.
RHR flov - GREATER THAN 200 GPM
'ND STABLE 14 Check Refueling Cavity Level:
- a. Refueling cavity level - GREATER THAN 23 FEET ABOVE Rx VESSEL FLANGE IF NO RHR loops operable, THEN verify 1 or more containment recirculation fans running AND verify refueling cavity sveep fans running AND place RCDT pumps in operation (Refer to ER-RHR.1, RCDT PUMP OPERATION POR CORE COOLING).
a.
Stop refueling AND increase refueling cavity level to greater than 23 feet (Refer to RF-2D, FILLING THE REFUELING CANAL) AND go to Step 15.
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AP-RHR.1 LOSS OF RHR REV 8
PAGE 7 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Verify Maintenance Notified And Continue Attempts To Restore Inoperable RHR Pumps Or RHR Flow:
- a. Maintenance
- NOTIFIED
- b. Attempts continued
- TO RESTORE INOPERABLE RHR PUMPS OR FLOV 16 Establish Monitoring Of RCS Temperature:
o RCS temperature
- MONITORING ESTABLISHED 17 Complete NOTIFICATION TO HIGHER SUPERVISION 18 Check Alternatives For Long Term Cooling:
o Refer to ER-RHR.l, RCDT PUMP OPERATION'FOR CORE COOLING o
Consider establishing secondary heat sink o
Consider RCS feed and bleed 19 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.l 717LE:
LOSS OF RHR REV:
8 PAGE 8 of 8 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 20 Check For NRC Reporting Requirements:
o NRC reporting requirements=-
REFER TO 0-9.3, NRC IMMEDIATE NOTIFICATION 21 Verify RHR Cooling:
a.
RHR cooling normal:
o RHR cooling - RESTORED o
RCS temperature
- STABLE OR DECREASING
- b. Return to REQUIRED PLANT OPERATION
- a. Return to Step 1.
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AP-RHR. 1 LOSS OF RHR REV:
8 PAGE 1 of 1 ATTACHMENT A NORMAL RHR COOLING VALVE ALIGNMENT RHR Pump Suction From Loop A Hot Leg..................
MOV-700 Open MOV-701 Open RHR Pump Discharge To Loop B Cold Leg.................
MOV-720 Open
'OV-721 Open RHR Letdovn to CVCS.........;.........................
HCV-133 RHR Pump Discharge Cross-Connect......................
V-709C V-709D RHR HX Bypass..........................................
V-712A V-712B Open Open Open Open Open FCV-626 as desire RHR HX Outlet 1A...................................
HCV-625 as desire RHR HX Outlet 1B...................................
HCV-624 as desire RHR Pump Suction From RWST............................
MOV-856 Closed RHR Pump Suction Valves A RHR Pump...............................
MOV-704A Open B RHR Pump'...........................:...
MOV-704B Open
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AP-RHR. 1 TITLE LOSS OF RHR REV:
8 PAGE 1 of 1 ATTACHMENT RCP START A)
The following are prerequisites for starting an RCP:
o RCP oil lift pump running (2 minutes) o RCP oil liftpressure white light LIT B)
In addition, the following conditions should be met prior to starting an RCP:
1)
Both PRZR spray valves closed DEMAND AT 04 2)
CCW in service and aligned to RCP 3)
RCP temperatures normal:
o Seal inlet temperature
'- LESS THAN 135'F o
CCW temperature and flow alarms, EXTINGUISHED o
Motor bearing temperatures NORMAL (PPCS GD RCPS or recorder, if selected) 4)
RCP seal injection in service o
Seal injection flow GREATER THAN 6 gpm o
Labyrinth seal D/P GREATER THAN 15 INCHES OF WATER 5)
RCP N1 seal D/P GREATER THAN 220 psid 6)
RCP oil levels:
o Level alarms EXTINGUISHED o
Level indicators ON SCALE 7)
RCP seal return:
NOTE a) b)
c)
RCP 41 seal outlet valves open:
o AOV-270A for RCP A o
AOV-270B for RCP B
IF MOV-313, seal return isolation,
- open, THEN verify the following:
o VCT pressure GREATER THAN 15 psig o
RCP N1 seal leakoff flow BETWEEN 0.25 gpm AND 5.5 GPM o
RCP N2 seal standpipe low level alarm EXTINGUISHED IF MOV-313 closed, THEN verify other RCP
$ 1 seal parameters normal prior to starting an RCP:
o RCP 41 seal inlet temperature o
RCP gl seal D/P RCP oil lift pump should be stopped after RCP is running.
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AP-RHR.1 0
LOSS OF RHR REV:
8 PAGE 1 of 1 ATTACHMENT NC NOTE: It may take several minutes following initial transient for natural circulation to develop.
The following conditions indicate natural circulation flow:
o RCS subcooling based on core exit T/Cs GREATER THAN REQUIREMENTS OF FIGURE MIN SUBCOOLING o
S/G pressures STABLE OR DECREASING o
Core exit T/Cs STABLE OR DECREASING o
RCS cold leg temperatures AT SATURATION TEMPERATURE FOR S/G PRESSURE The following equipment should be operating to support natural circulation and cooling:
o Control rod shroud fans o
PRZR heaters (Refer to ER-PRZR.1, RESTORATION OF PRZR HEATERS DURING BLACKOUT) o One Reactor Compartment Cooling Fan
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AP-RHR.l TITLE:
LOSS OF RHR REV:
8 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit, T/C Indication RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'P 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)
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ATT-3. 0 TITLE:
ATTACHMENT CI/CVI REV 3
PAGE 1 of 3
n Superintendent Date
/
NOTE:
Locked valve key may be required for local operations.
AUTO ISOL VALVE AOV-200A AOV-200B AOV-202 AOV-5392 AOV-371 MOV-313 AOV-9227 AOV-508 AOV-5738 AOV-5737 AOV-5735 AOV-5736 SOV-921 SOV-922 SOV-923 SOV-924 AOV-539 AOV-1789 AOV-1786 AOV-1787 AOV-1721 ALTERNATE ISOL AOV-371/133 AOV-371/133 AOV-371/133 V-5397/5410 V-204A/820 V-315A/315C V-9225 AOV-548/550A/550B V-5701 V-5702 V-5733 V-5734 V-928A V-928B V-929A V-929B V-546 V-1655 AOV-1787 AOV-1786 AOV-1003A/1003B/1722 ALTERNATE ISOL LOCATION MCB MCB MCB IB BASEMENT CLEAN SIDE NRHX ROOM (locked area)
SWRF ROOM (reach rods)
IB BASEMENT CLEAN SIDE MCB IB BASEMENT CLEAN SIDE IB BASEMENT CLEAN SIDE SAMPLE HOOD SAMPLE HOOD
'INSIDE A H2 MON PNL (AFW PUMP AREA)(key 59)
INSIDE A H2 MON PNL (AFW PUMP AREA)(key 59)
INSIDE B H2 MON PNL (AFW PUMP AREA)(key 59)
INSIDE B H2 MON PNL (AFW PUMP AREA)(key 59)
BY SFP HX BY SFP HX MCB MCB WASTE DISPOSAL PANEL/AB SUB-BASEMENT
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ATT-3.0 ATTACHMENT CI/CVI REV 3
PAGE 2 of 3
AUTO ISOL VALVE AOV-1003A AOV-1003B AOV-1597 AOV-1598 AOV-1599 MOV-813 MOV-814 AOV-1723 AOV-1728 AOV-951 AOV-953 AOV-955 AOV-959 AOV-966A AOV-966B AOV-966C AOV-846 AOV-8418 AOV-7971 AOV-7970 AOV-7445 AOV-7478 ALTERNATE 1SOL AOV-1721 AOV-1721 V-1596 AOV-1599 AOV-1598 MOV-817 V-815A AOV-1728 AOV-1723 AOV-966A AOV-966B AOV-966C V-957 V-956F V-956E V-956D V-8629/944A V-5021 AOV-7970 AOV-7971 AOV-7478 AOV-7445 ALTERNATE ISOL LOCATION WASTE DISPOSAL PANEL WASTE DISPOSAL PANEL IB BASEMENT CLEAN SIDE MCB MCB MCB AB INT LEVEL WASTE DISPOSAL PANEL WASTE DISPOSAL PANEL MCB MCB MCB PRIMARY SAMPLE ROOM SAMPLE HOOD SAMPLE HOOD SAMPLE HOOD BY SFP HX IB BASEMENT CLEAN SIDE MCB REAR MCB REAR MCB REAR MCB REAR
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ATT-3.0 ATTACHMENT CI/CVI REV' PAGE 3 of 3
AUTO ISOL VALVE PEVO-5879 PSVO-5869 MOV-7443 MOV-7444 SOV-1B *(10214S1)
SOV-2B *(10214S)
SOV-3B *(10211S1)
SOV-5B *(10213S1)
SOV-1A *(10215S1)
SOV-2A *(10215S)
SOV-3A *(10205S1)
SOV-5A *(10209S1)
ALTERNATE ISOL N/A FLANGED N/A FLANGED N/A FLANGE D N/A FLANGE D V-1080A V-108 0A V-1076B V-1084B V-1080A V-1080A V-1076A V-1084A ALTERNATE ISOL LOCATION SAMPLE HOOD SAMPLE HOOD SAMPLE HOOD SAMPLE HOOD SAMPLE HOOD SAMPLE HOOD IB BASEMENT CLEAN SIDE IB BASEMENT CLEAN SIDE
- NOTE:
Valves normally deenergized with manual isolation valve locked closed.
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ATT-3.1 LITLE:
ATTACHMENT CNMT CLOSURE REV 2
PAGE 1 of 2 Superintendent Date 7
A)
Ensure at least one door closed in EACH CNMT airlock:
o Equipment airlock o
Personnel airlock B)
Verify valves in column 1 closed.
IF any valve NOT
- closed, THEN evaluate penetration and isolate as necessary (Refer to columen 2).
NOTE:
Locked valve key may be required for local operation.
COLUMN 1 AUTO ISOL VALVE AOV-5392 (IA)
AOV-371 (L/D)
MOV-313 (RCP Seal)
AOV-9227 (Fire Sys)
AOV-508 (DI Water)
'AOV-5738 (S/G B/D)
AOV-5737 (S/G B/D)
AOV-5735 (S/G samp)
AOV-5736 (S/G samp)
AOV-539 (PRT gas)
AOV-1789 (RCDT to gas anal)
COLUMN 2 ALTERNATE ISOL V-5397/5410 V-204A/820 V-315A/315C V-9225 AOV-548/550A/550B V-5701 V-5702 V-5733 V-5734 V-546 V-1655 ALTERNATE ISOL LOCATION IB CLEAN BSMT
'RHX ROOM (locked area)
SWRF ROOM (reach rods)
IB CLEAN BSMT MCB IB CLEAN BSMT IB CLEAN BSMT SAMPLE HOOD SAMPLE HOOD BY SFP HX BY SFP HX AOV-1786 (RCDT/VH)
AOV-1721 +CDT pumps)
AOV-1787 (V-1716A)
BY SFP HX AOV,-1003A/1003B/1722 WASTE PANEL/AB SUB-BASEMENT AOV-1597 (CNMT rad)
AOV-1598 (CNMT rad)
MOV-813 (CCW)
V-1596 AOV-1599 CCW SYSTEM INTACT IB CLEAN BSMT MCB AUX BLDG INT (BY RWST)
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ATT-F 1 TITLE:
ATTACHMENT CNMT CLOSURE REV 2
PAGE 2 of 2
COLUMN 1 AUTO ISOL VALVE MOV-814 (CCW)
AOV-846 (ACCUM N2)
AOV-8418 (DI water)
COLUMN 2 ALTERNATE ISOL CCW SYSTEM INTACT AOV-1728 V-8629/944A V-5021 ALTERNATE ISOL LOCATION AUX BLDG INT
( BY RWST)
WASTE PANEL BY SFP HX IB CLEAN BSMT AOV-7970 (Mini purge)
AOV-7971 MCB REAR AOV-7445 (Mini purge)
MOV-7443 (Leak test)
MOV-7444 (Leak test)
AOV-5879 (Purge)
AOV-5869 (Purge)
AOV-7478 MCB REAR Notify S/G office and locally close 'valve Flanged except for ILRT Purge Exhaust Fan OFF Purge Supply Fan OFF C)
Verify both S/Gs intact in CNMT OR steam and feed headers isolated outside CNMT (Refer to 0-15.2, REQUIRED VALVE LINEUP FOR REACTOR HEAD REMOVAL, for specific guidance).
D)
Evaluate and isolate any other known openings from CNMT to the outside atmosphere.
Contact Outage Coordinator or Maintenance Manager and refer to 0-2.3.1A, CONTAINMENT CLOSURE CAPABILITY IN TWO HOURS DURING REDUCED RCS INVENTORY OPERATION, for add-itional guidance.
E)
Verify fuel transfer flange installed or gate valve, V-650J, closed.
F)
Contact S/G office to ensure that S/G maintenance penetration is isolated (no openings to outside).
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