ML20205S744
| ML20205S744 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 04/08/1988 |
| From: | Bishop E CAROLINA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20205K904 | List:
|
| References | |
| EOP-01-SRP-NSW, EOP-1-SRP-NSW, NUDOCS 8811110158 | |
| Download: ML20205S744 (14) | |
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t CAROLINA POWER & LIGHT COMPANY-BRUNSWICK STEAM ELECTRIC PLANT UNIT 0 NUCLEAR SERVICE WATER SYSTEM RECOVERY EMERGENCY OPERATING PROCEDURE: E0P-01-SRP-NSW VOLUME VI -- r ,
Rev 003 ( %
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Approved By: ff Lod Date L/ TI f[
Gener(alManager/ [
Manager-Operatio/'jvs Page 1 of 14 {
8811110158 881025 ?'
LIST OF EFFECTIVE PAGES E0P-01-SRP-NSW Page(s) Revision 1-14 3 i
i BSEP/Vol. VI/EOP-01-SRP-NSW Page 2 of 14 Rev. 3
a A. TITLE - Nuclear Servfee Water System Recovery B. ENTRY CONDITION Available service water' pumps CANNOT maintain the nuclear service water header pressure greater than 40 psig.
C. OPERATOR ACTIONS
- 1. IF the affected units' diesel generators are operating, THEN PERFORM Section 1 on page 4 of this procedure.
- 2. IF the affected units' diesel generators are NOT operating THEN PERFORM Serrion 2 on page 7 of this procedure.
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i BSEP/Vol. VI/EOP-01-SRP-NSW Page 3 of 14 Rev. 3 l
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p Section 1 - Recovering Nuclear Service Water System When the Affected Unit's Diesel Generators are Operating.
- 1. CLOSE the following valves:
- 2. IF nuclear ses< ice water header pressure is restored and maintained Eove 40 psig, THEN CONTINUE in this section at Step 12 on page 6.
IF NOT, THEN CONTINUE in this section at Step 3.
- 4. E nuclear service varer header pressure is restored and maintained above 40 psig, THEN CONTINUE in this section at Step 9.d. IF NCrr, THEN CONTINUE in this section at Step 5.
- 5. E the other unit's nuclear service water header pressure is NOT above 40 psig, THEN TRIP the diesel generators by depressing the AUTO STOP push button.
- 6. CLOSE D/G SW SUPPL' ISOL, SW-V255.
- 7. E the affected unit's diesci generators are operating, THEN locally ,
VERIFY service water supply valves from the other unit are open. l li
- 8. E nuclear service water header pressure is restored and maintained above 40 psig, THEN PERFORM the following steps:
- b. E nuclear service water header pressure can still be maintained above 40 psig, THEN EXIT this section and ENTER Section 3 on page 10 of this procedure,
- c. E nuclear service water header pressure CANNOT be maintained above 40 peig, THEN CONTINUE in this section at Step 9.
- 9. E nuclear service water header pressure is NOT above 40 psig, TFEN VERIFY or INITIAT' che following steps:
- a. TRIP nuclear service water pumps.
- b. ALIGN all conventional service water pumps to the conventional !
- d. E the conventional service water header pressure is above 40 psig, THEN OPEN Conventional Header To RBCCW Heat Exctangers Supply Valve, SW-V146.
BSEP/Vol. VI/EOP-01-SRP-NSW Page 4 of 14 Rev. 3 i
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- e. IF the Conventional Service Water System is NOT adequately supplying the RBCCW heat exchangers, THEN PERFORM the following steps: .
(1) TRIP both reactor recirculation pumps.
(2) TRIP both CRD pumps.
(3) TRIP RWCU pumps and ISOLATE the system.
(4) NOTIFY E&RC to sample the drywell.
(5) MONITOR fuel pool temperature.
(6) j]; RBCCW temperature exceeds 125'F, THEN ISOLATE RBCCW supply to the fuel pool heat exchangers.
- 10. ))[ fire protection water is needed for cooling RBCCW heat exchangers, THEN PERFORM the following steps:
- a. CLOSE the following valves:
(1) RBCCW Heat Exchanger A Service Water Inlet Valve, SW-V109 (2) RBCCW Heat Exchanger B Service Water Inlet Valve, SW-V108 (3) RBCCW Heat Exchanger C Service Water Inlet Valve, SW-V107
- b. OPEN the following valvest (1) RBCCW Heat Exchanger A Charging Valve, SW-V166 (2) RBCCW Heat Exchanger B Charging Valve, SW-V155 (3) RBCCW Heat Exchanger C Charging Valve, SW-V154
- c. OPEN Well Water To Service Water Shutof f Valve, WW-V206.
- d. Unit 1 only - UNLOCK and OPEN Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV20.
- e. Unit 2 only - UNLOCK and OPEN Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV10.
- f. MONITOR and CONTROL the fire protection tank level to maintain fire protection tank level greater than 27 feet 6 inches.
- 11. J][ fire protection water is needed for containment heat removal, THEN PERFORM the following stepst
BSEP/Vol. VI/EOP-01-SRP-NSW Page 5 of 14 Rev. 3
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- c. OPEN CONV-NUC HDR XTIE V5V, SW-V102.
- e. OPEN Well Water Flush To Service Water Shutof f Valve, WW-V203.
'f. MONITOR and CONTROL fire protection tank'leve1Lto maintain' fire protection tank level greater-than 27 feet 6' inches, 3 Unit 1 only - UNLOCK and OPEN' Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV20.
- h. . Unit 2 only - UNLOCK and OPEN Fire Protection (Well Water) To Service Water Flush Shutof f Valve. 2-FP-PV10.
- 12. - JJP the nuclear service water pumps have lost electrical' power gjt will NOT start, THEN CONTINUE in Section 4 on page 11 of this procedure.
- 13. 'IF service water pumps were supplying the nuclear header AND pressure could'NOT be maintained above 40 psig, THEN CONTINUE in Section 3 on page 10 of this procedure.
BSEP/Vol. V1/EOP-01-SRP-NSW Page 6 of 14 Rev. 3
I Section 2 - Recovering Nuclear Service Water System When the Af fected Unit's Diesel Generators Are NOT Operating.
- 1. CLOSE the following valves:
- 2. IF nuclear service water heater pressure is restored and maintained above 40 psig, THEN CONTINUE in this section at Step 10 on page 9.
IF NOT, THEN CONTINUE in this section at Step 3.
- 3. CLOSE D/G SW SUPPLY ISOL, SW-V255.
- 4. IF nuclear service water header pressure is restored and maintained above 40 psig, THEN EXIT this section and ENTER Section 3 on page 10 of this procedure. IF NOT, THEN CONTINUE in this section at Step 5.
- 6. JU[ nuclear service water header pressure is restored and maintained above 40 psig, THEN PERF07.M the following steps. IF NOT, THEN CONTINUE in this section at Step 7:
- a. OPEN D/G SW SUPPLY ISOL, SW-V255.
- b. IF nuclear service water header pressure can still be IEaintained above 40 psig, THEN CONTINUE in this section at Step 7.c.
- c. II nuclear service water header pressure CANNOT be maintained above 40 psig, THEN CONTINUE in this section at Step 7.
- 7. JU[ nuclear service water header pressure is NOT restored and maintained above 40 psig, THEN VERIFY or PERFORM the following steps:
- a. TRIP nuclear service water pumps.
- b. ALIGN aki conventional service water pumps to *he conventional header.
- c. JU[ the conventional service water header pressure is above !
40 psig, THEN OPEN Ccnventional Header To RBCCW Heat Exchangers ,
Supply Valve, SW-V146. l
- d. JU[ the Conventional Service Water System is NOT adequately supplying the RBCCW heat exchangers THEN PERFORM the following steps (1) TRIP both reactor recirculation pumps.
BSEP/Vol. VI/EOP-01-SRP-NSW Page 7 of 14 Rev. 3
(2) TRIP both CRD pumps.
(3) TRIP RWCU pumps and ISOLATE the system.
(4) NOTIFY E&RC to sample the drywell.
(5) MONITOR fuel pool temperature.
i (6) Jg[ RBCCW temperature exceeds 125'F, THEN ISOLATE RECCW
< supply to the fuel pool heat exchangers.
- 8. JU[ fire protection water is needed for cooling RBCCW heat exchangers, THEN PERFORM the following steps:
- a. CLOSE the following valves: ,
(1) RBCCW Heat Exchanger A Service Water Inlet Valve, SW-V109 (2) RBCCW Heat Exchanger B Service Water Inlet Valve, SW-V108 (3) RBCCW Heat Exchanger C Service Water Inlet Valve, SW-V107
- b. OPEN the following valves:
(1) RBCCW Heat Exchanger A Charging Valve, SW-V166 (2) RBCCW Heat Exchanger B Charging Valve, SW-V155 (3) R3CCW Heat Exchanger C Charging Valve, SW-V154
- c. OPEN Well Water To Service Water Shutof f Valve, WW-V206.
- d. Unit 1 only - UNLOCK and OPEN Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV20.
- e. Unit 2 only - UNLOCK and OPEN Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV10.
- f. MONITOR and CONTROL the fire protection tank level to maintain i fire protection tank level greater than 27 feet 6 inchea.
- 9. JU[ fire protection water is needed for containment heat removal, THEN PERFORM the following steps:
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- e. OPEN Well Water Flush To Service Water Shutof f Valve, WW-V203.
Page 8 of 14 Rev. 3 BSEP/Vol. VI/EOP-01-SRP-NSW 1
- f. MONITOR and CONTROL fire protection tank level to maintain fire protection tank level greater than 27 feet 6 inches.
3 Unit 1 only - UNLOCK and OPEN Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV20.
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- h. Unit 2 only - UNLOCK and OPEN Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV10.
- 10. Jg[ the nuclear service water pumps have lost electrical power Ojt will NOT start, THEN CONTINUE in Section 4 on page 11 of this procedure. *
- 11. j][ service water pumps were supplying the nuclear header AND pressure could NOT be maintained above 40 psig, THEN CONTINUE in Section 3 on page 10 of this procedure.
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Section 3 - Service water pumps are/were NOT maintaining the nuclear service l water header pressure above 40 psig.
- 1. CHECK Nuclear Service Water System for leakage as follows:
- a. CHECK "FLOOD STATUS" board on Panel XU-51.
- b. CHECK flood level annunciators on UA-12.
- c. WALKDOWN system piping to locate any leaks.
- d. ATTEMPT to isolate any source of leakege that is found.
- e. NOTIFY maintenance to begin repairs as required.
- 2. CHECK service water traveling screens and trash racks for excessive build up. WASH screens OR NOTIFY maintenance to clean trash racks ,
as required.
- 3. WHEN system leakage has been isolated, repaired, OR it has been determined that no leakage exists. THEN CONTINUE in Section 5 on I page 12 of this procedure. l t
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Section 4 - AC power is NOT available to the nuclear service water pumps OR I the pumps will NOT start. l
- 1. J.F the affected pumps' 4 kV E bus is deenergized, THEN PERFORM the Auxiliary Electrical Power System Recovery Procedure concurrently with this procedure.
- 2. ENSURE discharge valves on all nuclear service water pumps that are NOT operating are fully closed.
- 3. IF the affected pumps' 4 kV E bus is energir.ed, THEN CHECK each U fected pump breaker for electrical protection devices and CHECK the control power fuses.
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- 4. _W HEN any pump becomes available to the nuclear header. THEN CONTINUE in Section 5 on page 12 of this procedure. l T
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Section 5 - Restoring the Nuclear Service Water System
- 1. START one service water pump to the nuclear header.
NOTE Service water flow to the RBCCW heat exchangers should be 2500 to 5500 gpm.
- 4. VERIFY proper flow rate through RBCCW heat exchangers (SW-FI-1158-1 on XU-2).
- 5. START additional service water pumps to the nuclear header as required to maintain pressure above 40 psig.
- 6. IF the nuclear service water header pressure is below 40 psig, THEN PERFORM the following steps
- a. MONITOR nuciear service header pressure locally (SW-PI-143-2 in Service Water Building or SW-PI-815 in Reactor Building) to ensure the validity of the low pressure alarm.
- b. MONITOR service water pump; discharge strainer dP locally and CHECK UA-1 for annunciators.
- c. IF (1) Any pump discharge strainer dP is above 5 paid AND the air operated blowdown valve is NOT open EE (2) Any pump discharge strainer dP is above 5 psid AND the strainer backwash drive motor is NOT operating, THEN PERFORM the following stepst l
BSEP/Vol. VI/EOP-01-SRP-NSW Page 12 of 14 Rev. 3 l
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NOTE POWER SUPPLY TO BACKWASH PUMPS DRIVE MOTOR 1A ------- MCC-1PA-BU4 IB ------- MCC-1PB-BY2 2A ------- MCC-2PA-E04 25 ------- MCC-2PB-E40 (1) RESET thermal or magnetic trip on 480 volt breaker for the affected drive motor.
(2) IF the st-siner drive motor for any strainer is operating jND the air operated blowdown valve is NOT open THEN OPEN the manual blowdown on the affected strainer.
(3) NOTIFY maintenance to begin repairs as required.
- d. IF the nuclear service water header pressure CANNOT be restored AWD maintained above 40 psig. THEN RETURN to Step C on page 3 of this procedure. .
- 7. IF the nuclear service water header pressure can be maintained above 40 psig, THEN PERFORM the following steps:
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PERFORM the following steps:
(1) CLOSE RHR Service Header Flush Valve, SW-V140.
i (2) CLOSE Well Water Flush To Service Shutoff Valve, WW-V203.
- (3) Unit 1 only - CLOSE and LOCK CLOSED Fire Protection (Well Water) To Service Water Flush Shutoff Valve, 2-FP-PV20.
(4) Unit 2 only - CLOSE and LOCK CLOSED Fire Protection (Well Water) To Service Water Flush Shutof f Valve, 2-FP-PV10.
(5) IF plant conditions allow, THEN STOP the motor-driven and liesel-driven fire pump.
- b. ALIGN service water to the RHRSW booster pumps and the vital header as required by plant conditions.
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- c. . RESTORE any of the following systems that were tripped due to loss of service water as plant conditions allows !
(2) CRD (OP-07) d (3) RWCU-(OP-14)
(4) Reactor recirculation (OP-02)
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