ML17261A989
| ML17261A989 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/23/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261A978 | List: |
| References | |
| AP-SW.1, NUDOCS 9003080341 | |
| Download: ML17261A989 (18) | |
Text
EOP:
AP-SW.1 SERVICE WATER LEAK REV:
7 PAGE 1 of 7 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE P
0 P
T SUPERIN EN ENT EFFECTIVE DATE QA~ NON-QA REVIEWED BY:
CATEGORY 1.0 G~NN'TATION DATF 900308034'00~7 PDR
@DOCK OS0002O4 Tli';IE
EOP:
AP-SW. 1 SERVICE WATER LEAK REV 7
PAGE 2 of 7 A.
PURPOSE This procedure provides the necessary instructions to respond to a station service water leak.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
SYMPTOMS The symptoms of SERVICE WATER LEAK are; a.
Service water header pressure low alarms on
- computer, or b.
Annunciator H-6g CCW SERVICE WATER LO FLOW 1000 GPMg
- alarms, or c.
Annunciator E-31, CONTAINMENT RECIRC FAN CONDENSATE HI-HI LEVEL alarm, exhibits an unexplained increase in frequency, or d.
Sump pump activity increases in containment, the aux bldg, 'or intermediate bldg, or e.
Unexplained increase in the waste hold-up tank, or f.
Visual observation of an SW leak.
EOP:
AP-SW. 1 TITLE:
SERVICE WATER LEAK REV:
7 PAGE 3 of 7 STBP ACTION/EXPECTED RBSPONSE
RESPONSE
NOT OBTAINED CAUTION IF EITHER D/G STARTS, BUT VILL NOT ACCEPT BLECTRICAL LOAD, AND COOLING WATER NOT AVAILABLE, STOP THE AFFECTED D/G TO PREVENT OVERHEATING.
NOTE:
o Steps 1 through 3 are IMMEDIATE ACTION steps.
o See Attachment A for a list of the major non-safeguards loads supplied by each service water header.
O 1
Verify 480V Busses 17 and 18 ENERGIZED Verify D/Gs running OR start D/Gs and manually load busses 17 and 18 onto the D/Gs if necessary.
O 2
Verify 1 SW Pump RUNNING In Each Loop:
o Loop A, 1A or 1B SUP pump-RUNNING IF an SV pump has tripped, THEN start the standby pump for that loop.
o Loop B, 1C or 1D SVP pump-RUNNING O
3 Check SW Header Pressure For Each Loop:
o A loop SV header pressure-GREATER THAN 40 PSIG AND STABLE OR INCREASING o
B loop SW header pressure-GREATER THAN 40 PSIG AND STABLE OR INCREASING IF pressure can NOT be restored in both loops, THEN trip the reactor and go to E-O, REACTOR TRIP or SAFETY INJECTION.
0 f
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AP-SW. 1 T1TLE:
SERVICE WATER LEAK REV:
7 PAGE 4 of 7 STEP ACTION/EXPECTED RESPONSE RBSPONSB NOT OBTAINED NOTE: If SV is lost to any safeguards equipment, the affected component should be declared inoperable and appropriate actions taken as required by Tech Specs, Section 3.
CNMT sump A level - INCREASING
/
CNMT sump A pump start frequency
- INCREASING IF the SW leak is NOT in the
- CNMT, THEN go to Step 8.
NOTE:
o An A-25.1, GINNA STATION EVENT REPORT, should be submitted for a SV leak in containment.
o Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.
o Sump at 10 feet indicated on the control board indicators is approximately 6 feet 6 inches belov the bottom of the reactor vessel.
5 Check If The SW Leak Is Within The Capacity Of 1 CNMT Sump Pump (50 GPM):
o Maximum of 1
CNMT sump A pump running AND sump A level - LESS THAN 10 FBET AND STABLE OR DECREASING IF leakage exceeds the capacity of 1
- pump, THEN plant shutdovn should be considered.
EOP:
AP-SW.1 SERVICE WATER LEAK REV:
7 PAGE 5 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
CNMT recirc fan condensate collector level indicators may be helpful in identifying a leaking fan cooler.
6 Check, Prior to A CNMT Entry, If Source Of SW Leak Is A Leaking CNMT Recirc Fan Cooler OR A Reactor Compartment Cooler:
a.
CNMT recirc fan coolers AND reactor compartment coolers isolated one at a time (Refer to Attachment B for isolation) -
~
LEAKAGE DETECTED
- a. IP leak can NOT be located without a CNMT entry, THEN make a
CNMT entry.
Refer to A-3, CONTAINMENT VESSEL ACCESS REQUIREMENTS.
7 Complete ISOLATION OF LEAKAGE SOURCE AND GO TO STEP 16 8
Check Aux Bldg And Inter Bldg Sump Pump To Determine The General Location Of A Leak:
o Aux Bldg OR Inter Bldg sump pump run frequency - INCREASED IP AUX BLDG and Intermediate Bldg.
sump pumps run frequency has NOT increased, THEN have personnel check for leakage in the Turbine Bldg.
9 Establish THE SPECIFIC LOCATION OF THE LEAK 10 Complete An Evaluation ON THE CONSEQUENCES OF ISOLATING THE LEAKING SECTION
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AP-SW. 1 SERVICE WATER LEAK REV 7
PAGE 6 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE: If SV is lost to either D/G, refer to ER-DG.2, ALTERNATE COOLING FOR EMERGENCY D/Gs, if cooling is required.
ll Establish If Plant Operation May Continue:
o Plant operation -
MAY CONTINUE IF plant shutdown is required, THEN refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOVN.
12 Establish Isolation Of The SW Leak At The Source:
a.
SV leak - ISOLATED AT THE SOURCE
- a. IF the leak can NOT be isolated within either loop, THEN split'he A and B loops as follows:
- 1) Close V-4669 OR V-4760 in B D/G room.
b.
Go to Step 16
- 2) Close V-4611 OR V-4612 in screenhouse.
- 3) Close V-4625 OR V-4626 in Inter Bldg clean side.
- 4) Close V-4639 OR V-4756 in Inter Bldg clean side.
5)
Go to Step 13.
13 Establish Which Loop Has The Leak:
a.
Check leak location on SV flow print - TO DETERMINE WHICH LOOP SHOULD BE AFFECTED
0
AP-SW.1 SERVICE WATER LEAK REV:
7 PAGE 7 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 14 SW Pumps In Affected Loop STOPPED Stop SV pumps in affected loop.
15 Complete ISOLATION OF THE LEAK 16 Complete NOTIFICATION TO MAINTENANCE AND HIGHER SUPERVISION
-END-
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AP-SW.1 TITLE:
SERVXCE WATER LEAK REV:
7 PAGE 1 of 1 ATTACHMENT A A SW LOOP NON-SAFETY RELATED LOADS:
0 0
0
~ 0 0
0 0
0 0
0 0
0 0
0 0
1A and 1C instrument air compressors.
1A main feed pump.
Exciter cooler.
Bus duct coolers (both)
Seal oil unit airside and H2 side coolers.
B turbine oil cooler.
All 3 condensate pumps.
Secondary sample coolers.
Battery room air conditioners.
Relay room air conditioners.
Traveling screens.
Circulating water pumps.
Administrative computer room HVAC.
House heating boiler sample cooler.
Spent fuel pit Hx.
B SW LOOP'ON-SAFETY RELATED LOADS-'
1B main feed pump.
o Both heater drain pumps.
o Both EH oil coolers.
o A turbine oil cooler.
o 1B instrument air compressor.
o Service air compressor.
o Vacuum priming pumps.
o 1A and 1B HVAC water chillers.
o Laundry room cooler.
o New spent fuel pit Hx.
EOP:
AP-SW. 1 TITLE:
SERVICE WATER LEAK REV 7
PAGE 1 of 1 ATTACHMENT B SERVICE WATER LOADS IN CONTAINMENT AND ASSOCIATED ISOLATION VALVES:
NOTE:
A locked valve key will be needed as these are locked valves.
Intermediate Bldg. (clean side):
o A CNMT recirc fan cooler SW inlet V-4627 SW outlet V-4629 o
B CNMT recirc fan cooler SW inlet V-4628 SW outlet V-4630 o
C CNMT recirc fan cooler SW inlet,V-4641 SW outlet V-4643 o
D CNMT recirc fan cooler SW inlet V-4642 SW outlet V-4644 Intermediate Bldg. (hot side - sample hood):
o A Rx compartment cooler SW inlet V-4757 SW outlet B-4758 o