ML20066C799

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Rev a to RHR Sys Operating Procedures,SOP-E11
ML20066C799
Person / Time
Site: 05000605
Issue date: 01/09/1991
From: Torres W
GENERAL ELECTRIC CO.
To:
Shared Package
ML20066C783 List:
References
23A6179AK, 23A6179AK-RA, NUDOCS 9101110223
Download: ML20066C799 (30)
v • d • e


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^ 'd SYSTEM DESIGN DEFINITION if U 1r 1r 08 oo INCLUDES REOUIREMENTS INTEGRATED EMERGENCY OPERATING PROCEDURE y8g FORSYSTEM EOUIPMENT&

PROCEDURES GUIDELINES -

j;^go MAN-MACHINE INTERFACES r1 Plant andSystem Design Definition

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Appicant Scope EQUIPMENT PROCUREMENT y y 3 l

U 'U U U U EQUIPMENT MAINTENANCE FINAL VERSION EMERGENCY OPERATING OPERATOR INSTALLATION- TRA!NING OF SYSTEM PROCEDURES AND FINAL TRAINING INSPECTION

  • MATERIALS OPERATING VERSION OF INTEGRATED MATERIALS AND TESTING PROCEDURES OPERATING PROCEDURES Figure 1 Relationship Of System Training Material Preparation to Other Plant Design and Procurement Activities e

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'O GE Nuclear Ettergy 23A6179AK ss uo. g REV A REYtSION STATUS SHEET DOCUMENT TITLE RESIDUAL HEAT REMOVAL SYSTEM OPERATING PROCEDURES, SOP-E11 LEGEND OR DESCRIPTION OF GROUPS TYPE: OPERATING PROCEDURE pyp, K6/7 MPL ITEM NO: A80-3030 REYlSIONS l A PRELIMINARY ISSUE PER GAB E RM - DMH-3445 765 PRINTS TO MADE BY APPROVALS DEPT LOCATION W B TORRES C K TANO OE NUCLEAR ENERGY SAN JOSE CHKD BY ISSUED CONT ON SHEET 2 F E WILHEMI G A BAYLIS

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O GE Nucirr Energy 23A6179AK sH No. 2 REV A I

TABLE OF CONTENTS i

EELA l

1. PURPOSE 4
2. PRECAUTIONS AND LIMITATIONS 4 l 3. STARTUP OF THE RHR SYSTEM 4
4. PLACING THE RHR SYSTEM IN STANDBY READINESS CONDITION 6
5. EMERGENCY CORE COOLING AND DRYWELL SPRAY 7 5.1 Automatic Initiation '

7 5.2 Manual Startup for Reactor injection 8 5.3 Drywell Spray 9 5.4 Shutdown to Standby Readiness . 9 5.5 Injection Valve and RHR Pump Override 11

6. SUPPRESSION POOL COOLING AND WETWELL SPRAY 13 6,1 System Startup of the Suppression Pool Cooling Mode 13 6.2 Shutdown to Standby Readiness 13
7. SHUTDOWN COOLING AND FUEL POOL COOLING 14 7,1 System Startup in the Shutdown Cooling Modo 14 7,2 Fuel Pool Cooling 18 7.3 Shutdown to Standby Readiness 19 l
8. TEST MODE 21 8.1 Prerequisites for Test Mode 21-8.2 Startup of the Test Mode -21 8.3 -- Shutdown to Standby Readiness 21
9. OTHER OPERATIONS- 22 9.1 RHR System Flushing - 22 S.2 Reactor Cavity Drain to Suppression Pool Surge Tank or to the Suppression Pool 24

i O GE Nuclear Energy

. ,3 ,,,,,sg .a uo.3 Rev A TABLE OF CONTENTS (continued)

P.AGA

10. REFERENCES 25 ENCLOSURE 1. RHR SYSTEM ELECTRICAL LINEUP, DIVISION A 26 ENCLOSURE 2. RHR SYSTEM ELECTRICAL LINEUP, DIVISION B &C 27 ENCLOSURE 3. RHR SYSTEM DIVISION A VALVE LINEUP 28 ENCLOSURE 4. RHR SYSTEM DIVISION B & C VALVE LINEUP 29 ENCLOSURE 5. RHR SYSTEM INSTRUMENTATION & CONTROL LINEUP 30 l

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\ GE Nuclear Energy 23A6179AK SH No. - 4 REV A 1.0 PURPOSE This procedure provides the detailed lastructions for operating the Residual Heat Removal System (RHR). The various operating modes of RHR are covered, from startup to shutdown. In addition to these operating modes, procedures are presented for system flushing and draining of the reactor cavity after refueling. ,

2.0 PRECAUTIONS AND LIMITATIONS 2.1 Technical Specification Requirements:

(later) 2.2 The Leak Detection and Isolation System isolates RHR Shutdown Cooling Suction isolation valves F012A, B, C and F013A, B, C, on any of the following conditions:

-Reactor Vessel water level 3 ( setpoint later),

-Roactor Pressure high (setpoint later), or

-High RHR Equipment Room Temperature (setpoint later), i 2.3 Refer to Emergency Operating Procedures SEOP- (later) for Drywell Spray and Wetwell Spray.

3.0 STARTUP OF THE RHR SYSTEM The following prerequisites shall be satisfied prior to conducting the system

'Startup to Standby Readiness"in Section 4.

3.1. The following support systems available as follows:

1 3.1.1 The Suppressio:. Pool System [later], to provide and maintain a

} pool water level of [ later ] sufficient to maintain adequate net positive suction head to the RHR pumps.

3.1.2 The Reactor Building Cooling Water System (P21), to provide cooling water to the RHR heat exchangerc, 3.1.3 Electrical Power Distribution System (R10), to provide power for the RHR pumps, system motor operated valves, controls and instrumentation.

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1 O GE Nucirr Encrgy

-23A6179AK SH NO. 5 REV A 3.0 STARTUP OF THE RHR SYSTEM (continued) 3.1.4 Emergoney Diesel Generators, to provide a standby source of electric .

powwr should outside sources of power not be available.

3.2 System electricallineup completed per Enclosures 1 and 2.

3.3 System valve lineup compl6ted per Enciosures 3 and 4.

3.4 System instrumentation and control lineup completed per Enclosure 5.

1-4 6

/ \

(V) GE Nuclear Energy 23A6179AK SHNO. 6 Arv A 4.0 PLACING THE RHR SYSTEM IN STANDBY READINESS CONDITION Place the RHR System in standby readiness per the following :

4.1 Open the following valves:

Suppression Pool Suction valves F001 A( B, C),

Heat Exchanger Outlet valves F006A(B,C), and Minimum Flow valve F022 A(B, C),

Une Fill Pump valve F030A(B,C); open at designated (later) position.

4.2 Place the RHR A( B, C) SYSTEM OUT OF SERVICE switches in the OFF position.

4.3 Start the Une Fill Pumps C002A( B, C). Adjust F030A(B,C) to obtain (later) pressure from Ph701 A(B,C).

l l 4.4 Verify that the following annunciators are clear:

RHR A(0.C) OUT OF SERVICE HHR PUMP A(B,C) LOW DISCHARGE PRESSURE RHR SUCTION VALVE CLOSED FILL PUMP TRIP 4.6 Vent the RHR pumps locah as follows:

Eumn Valves A c609,F608,F610,F611 0 F619,F618,F621,F620 C F633,F634,F635,F636 4.6 Vent the RHR System pipings locah as follows:

Sy110m Valves l A F655,F656 B F645,F646 C F648,F649 l l 4.7 Locally vent the RHR Heat Exchanger shell.

O GE Nuclear Energy 23A6179AK SH No. 7 RW A 1 5.0 EMERGENCY CORE COOLING AND DRYWELL SPRAY 5.1 Automatic Initiation g ...

The Emergency Mode of the RHR System willInitiate automatically on either a high drywell pressure of[later) or a low vessel water level of

[later). Automatic startup can also be initiated by actuation of the respective RHR MANUAL INITIATION pushbuttons for each division.

In addition, drywell spray can be initiated by the operator after a system permissive of drywellpressure exceeding (setpoint).

5.1.1 Upon receipt of an Initiation signal, verify that the RHR System automatically achieves the following configuration:

-RHR Pumps C001 A, B, & C start,

-The emergency diesel generators start ,

-The Line Fill Pumps C002A, B, & C stop,

-The following valves close,if open:

Test return valves F021 A, B, &C Wetwell Spray Valves F0668 C Drywell Spray Valves F0598,F060B F0590, F0600

[ These valves close when injection valves F0478, C opens.]

l Heat Exchanger Tube Side Bypass Valves F007A,B,& C Fuel Pool isolation Valves F0378, F037C l

Discharge To Uquid Weste isolation Valves F032A,B,C F033A,B,C-

O D GE Nuclear Energy 23A617GAK SHNo. 6 nry A ,_ _

5.1 Automatic initiation (continued)

-The following valves open,if closed:

Injection valves F047A, B, & C If reactor pressure is s [36.5 kg/cm2g),

Heat Exchanger Outlet valves F006A, B, & C, Testable Check Vafve Disks F048A, B, & C open when flow starts to inject into the reactor.

-Verify that the Minimum Flow valves F022A, B, & C are closed when their respective loop flows are grecter than

[leter) .

-Verify that normal Heat Exchanger RCW water flow is established.

5.2 Manual Startup for Reactor Injection 5.2.1 Verify that the RHR is lined up in Standby Readiness por 4.0.

5.2.2 To start the respective RHR loops, initiate its division logic by arming and depressing its MANUAL INIT! ATION switch.

5.2.3 Verify that the RHR loop initiates as in 5.1.

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r CAUTION Execute the following step only as directed by Emergency Operating Procedure EOP-[later),

Primary Containment Control.

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& GE Nuclear Energy 23A6170AK SH No. 9 REV A 1

5.3 Drywell Spray 5.3.1 Verify that drywell pressure is greater than 0.14 kg/cm2.

3 5.3.2 Close injection valve F047B(C) and initiate RHR B(C) per Section 5.2.

5.3.3 Open Drywell Spray isolation valve F060B(C).

i 5.3,4 Thrott's open F059B(C) to initiate drywell sprays.

i 5.3.5 Terminate Drywell Spray as directed by ECPs when drywell pressure decreases below [later kg/cm2).

5.4 Shutdown to Standby Readiness

  • *
  • 1 This procedure may be conducted anytime after the conditions causing the initiation have cleared or it has been verified that an emergency no longer exists.

5.4.1 if the RHR System was started with the Manual Initiation switch, return the collar to the DISARM position and depress the System RESET pushbutton to clear the initiation logic for a division.

5.4.2 Terminate Drywell Spray, if directed by Emergency Operating Procedure EOP [later) Containment Control, by closing the drywell spray valves F059B(C) and F060B(C).

5.4.3 Close injection valves F047A, B, & C.

I 5.4.4 Verify that the respective Minimum Finw to Suppression Pool I valves F022A, B, & C open when their respective loop flows drop to less than (later).

5.4.5 Before stopping an RHR pump, start the Line Fill Pump for the respective loop and verify it is running.

5.4.6 Stop RHR Pump A, B, & C, i

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GE Nucbcr Encrgy

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! 5.4 Shutdown to Standby Readiness (continuw) lI S.4.7 Verify Testable Check valve disks F04BA, B & C are closed.

S.4.8 Stop the emergency diesel generators, if running and no longer required.

l S.4.19 Close Heat Exchanger RCW Water Discharge valves P21-i

- F013A,B, & C.

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0 GE Nuclear Energy 23A6179AK Arv A sH M). 11 1

5.5 Injection Valve and RHR Pump Override 5.5.1 Injection Valve F047 Manual Override l t

I CAUTION Stopping Injection flow with an automatic initiation signal present should only be performed if it can be proven that a LOCA condition does not exist or that adequate core cooling can be maintained by other injection systems, or it directed by the Emergency Operating Procedures.

n 5.5.1.1 To Override the injection valve auto open signal, momentari'y place the injection valve F047 control switch in the CLOSE position and than release it to spring return to AUTO.

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CAUTION l Closing the injection valve while an initiation signal is present prevents any further automatic opening of the valve until the j initiation signal clears and is reset. Manual l

i operation of the valve will be required if flow is required to maintain reactor water level.

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I 5.5.1.2 Verify that the indicator RHR INJECTION VALVE F047A (B,C) MANUAL OVERRIDE is received.

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5.5.1.3 Verify that the Minimum Flow to Suppression Pool valve F022A (B, C) opens when system flow decreases below (later) with the RHR pump running.

l 5.5.1.4 If necessary to inject into the reactor vessel, manually reopen the injection valve,

4 O

V GE Nuclear Energy 23As179AK swo. 12 A(V A 5.5.2 RHR Pump C002 Override I

CAUTION Stopping injection flow with an automatic initiation signal ,

present should only be performed if it can be proven that a LOCA condition does not exist or that adequate core cooling can be maintained by other injecilon systems, or 11 directed by the Emergency Operating Procedures.

4 5.5.2.1 Close injection valve F047A (8,C) per 5.5.1, 5.5.2.2 Stop the RHR Pump C00t A (B,C) and place its control switch to PULL LOCK position.

CAUTION Stopping the RHR Pump while an initiation signal is present prevents any further automatic starting of the pump in the emergency injection mode, unt!!

the initiation signal clears and is reset, s

5.5.2.3 Verify that the annunciator RHR PUMP A(B,C)

MANUAL OVERRIDE is r: celved.

5.5.2.4 If necessary to inject into the vessel, restart RHR Pump and open injection F047A(B,C) valve.

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O GE Nuclear Energy 23A6179AK SHNo. 13 AFV A 6.0 SUPPRESSION POOL COOLING AND WETWELL SPRAY l l 6.1 System Startup of the Suppression Pool Cooling Mode 6.1.1 Verify that the system is lined up for Standb/ Readiness per 4.0.

6.1.2 Start RHR Pump A(B,C).

0.1.3 Verify that the respective Minimum Flow to Suppression Pool Valves F022A, B, & C open (8 seconds after pump start) whenever their respective loop flows are less than [later).

6.1.4 Open Wetwell Retum valve F021 A (B,C). Throttle F021 A(B.C) as required to control suppression pool temperature.

6.1.5 Verify Minimum Flow valve F022A(B,C) closes.

I CAUTION Execute the following step only as directed by Emergency Operating Procedure SEOPilater),

Primary Containment Control.

5 6,1.6 Open Wetwell Spray valve F066B(C) to initiate wetwell spray.

6.1.7 Terminate wetwell spray as directed by EOPs when wetwell air space pressure decreases below (later) kg/cm2, 6.2 Shutdown to Standby Readiness l When suppression pool cooling is no longer required, shutdown the i Suppression Pool Cooling Mode to Standby Readiness as follows:

6.2.1 Close the Wetwell Return valve F021 A(B, C).

6.2.2 Close the Wetwell Spray Sparger valves F066B(C).

6.2.3 Verify that the respective Minimum Flow to Suppression Pool

! Valves F022A, B, & C open [ 8 second delay ) when their l

respective loop flows are less than (later).

6.2.4 Before shutting down an RHR pump, start the respective Line Fill pump and verify it is running.

6.2.5 Stop RHR Pump A (B, C).

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& GE Nuclent Energy -

23A6179AK A

sH IC . 14 AEV

! 7.0 SHUTDOWN COOLING - AND FUEL POOL COOLING i

7.1 System Startup of the Shutdown Cooling Mode 7.1.1 Prerequisites for Startup 4

7.1.1.1 The systerr is lined up for Standby Readiness per 4.0.

t 7.1.1.2 RHR System is flushed and conductivity is less than

[later). Refer to Subsection 9.1 for flushing procedures, i

7.1.1.3 Begin the shutdown cooling operation only after the reactor Dressure has been reduoed to below 9.5 kg/cm ) and reactor water level is above Level 3.

... NOTE ***

Refer to injection.(later) Procedure if reactor la shutdown by b 7.1.2 Valve Alignment after System Flushing 7.1.2.1 Verify that the following valves are aligned as follows after flushing of the selected RHR loop to be used for shutdown cooling per Section 9.1:

MalY.R D.tf21Q11gn Position -

F028A(B,C) Line Fill Pump luolation Closed l F001 A(B,C) Suppression Pool Suction Lc.

F007A(B,C) Heat Exchanger Bypass Closed F006A(B,C) Heat Exchanger outlet Closed F022A(B,C) Minimum Flow Open-F047A(B,C) RHR Injection Closed F002A(B,C) Shutdown Cooling Isolation Closed F02tA(B,C) Return to Suppressio'n Pool- Closed i

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O GE Nuclear Energy Arv A 7.1.2.1 Verify that the following valves are aligned as follows after flushing of the selected RHR loop to be used for shutdown cooling por Section 9.1:(continued):

Drywell Spray Sparger 4

F059B(C) Closed F060B(C) Drywell Spray Sparger Closed F066B(C) Wetwell Spray Sparger Closed F070B(C) Fuel Pool Return Suction isolation Closed 7.1.3 Warming of Discharge Piping l

[ NOTE: Loop A dscharpe piping is warmed with CVWretum to feedwaterline A Loops B & C are warmed eth reactor water.)

These steps may be performed when RPV pressure is below (30 kg/cm2) and prior to the RHR shutdown cooling Interlocks clear.

7.1.3.1 Open RCW valves P21-F013B(C,A) to establish cooling water flow through the RHR heat exchanger.

7.1.3.2 Open Warmup valve F049B(C,A). l 7.1.3.3 Open injection valve F047B(0,A).

l 7.1.3.4 Open Heat Exchanger Bypass valve F007B(C,A). l 7.1.3.5 Open Discharge to Radwaste isolation valve F032B(C,A). l 7.1.3.6 Slowly throttle open Discharge to Radwaste valve F033B(C,A) to initiate warming and control the warming rate to less than [55 *C/nour). Throttle valve P21-F013A(B,C) as necessary for warmup. Use F020B(0,A) to control flow lf discharging to the suppression pool.

7.1.3.7 Closely monitor the heat exchanger inlet temperature Lllater). When heat exchanger Inlet temperature is with 55'C] of reactor temperature [later), close F033B(C,A) or F020B(C,A) as appropriate.

7.1.3.8 Close Warmup valve F049B(0,A) and injection Valve F047B(C,A).

\} GE Nuclear Energy 23A6179AK A

sH NO . 16 AFV t 7.1.4 Warming of Pump Suction Side for RHR Loops B(C,A)

Perform warming of the suction side of the system after the shutdown cooling interlocks clear.

7.1.4.1 Close Heat Exchanger Bypass valve F007B(C,A) 7.1.4.2 Verify that RCW cooling water flow to the heat exchangers has been established, 7.1.4.3 Open Shutdown Cooling Suction isolation valve F002B (0,A).

7.1.4.4 Open shutdown Cooling Suction valves F0128 (C,A) and F013B(C,A).

7.1.4.5 Open Discharge to Uquid Waste valve F032B (C,A).

7.1.4.6 Slowly throttle open Discharge to Radwaste valve F0338(0,A) to initiate warming and control the warming rate to less than (55 'C/ hour). Throttle valve P21-F013A(B,C) as necessary for warmup. Use F020B(C,A) to control flow if discharging to the suppress!on pool.

7.1.4.7 Closely monitor the heat exchanger inlet temperature

later). - When heat exchanger inlet temperature is within 55'C) of reactor temperature [later), close F033B(C,A) or F020B(0,A) as appropriate.

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7.1.4.8 Lock close Discharge to Uquid Waste valve F032B(C,A).

O GE Nuclear Energy 23A6179AK SH NO, 17 AEV A I

7.1.5 Startup o: RHR Shutdown Cooling Place RHR Loops B and C, and then as required, . Loop A into shutdown cooling operation as follows:

7.1.5.1 Throttle Heat Exchanger Bypass valve F007B(C.A) to 20% open.

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l l 7.1.5.2 Start RHR Pump B (C,A).

l l 7.1.5.3 Open injection valve F047B(C,A).

7.1.5.4 Throttle open Heat Exchanger Bypass Valve F007B(C,A). l 7.1.5.5 Throttle open Heat exchanger outlet valve F006B (C,A).

Maintain the required cooldown rate by adjusting the positions of Heat Exchanger outlet valve F006B( C.A) and/or Heat Exchanger Bypass valve F007B(C,A).

7.1.5.6 Monitor reactor coolant temperature on Display Forrnat

[later).

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9 23A6179AK s e . it Rf'y A 7.2 Fuel Pool Cooling 7.2.1 Normal Refueling Operation 7.2.1.1 Verify that the Fuel Pool Cooling System is in operation per SOP-G41, 7.2.1.2 Place RHR System B(C)In the Shutdown Cooling Mode per 7.1. Throttle open Heat Exchanger outlet valve F006B(C) and close Heat Exchanger bypass valve F007B(C).

7.2.1.3 Open Fuel Pool return isolation valves F037B(C) and F03BB(C).

7.2.1.4 Close Injecnon valve F047B(C) to begin returning water to the fuel pools.

7.2.1.5 When the cooling of the fuel poolls no longer required, reopen Injection valve F047B(C) and close Fuel Pool isolation valves F037B(C) and F038B(C) to return to Shutdown Cooling Mode.

7.2.2 Fuel Pool Cooling for Complete Cors Removal 7.2.2.1 Verify that the Fuel Pool Cooling System is in operation per SOP-G41, 7.2.2.2 Verify that manual valves G41-F029 is open to provide a suction path for the RHR pumps. Verify manual valves G41-F093 and G41-F017 are open and G41-F022 is closed to provide a return flow path to the spent fuel storage pool.

7.2.2.3 Place RHR Syntem B(C)in the Shutdown Cooling Mode i per 7.1.

7.2.2.4 Open Fuel Pool isolation valves F037B(C) and ,

F038B(C).  ;

7.2.2.5 Close injection valve F047B(C).

7.2.2.6 Open Fuel Pool Suction valve F070B(C),

7.2.2.7 Close Shutdown Cooling Isolat!on valves F012B(C) and '

F013B(C).

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23A6179AK SH n 19 Arv A 7.2.2 Fuel Pool Cooling for Complete Core Femove.1(conunued) 7.2.2.8 When fuel pool cooling is no longer required,

- Open injection valve F04713(C).

- Open Shutdown Cooling Isolation valves F012B(C) and F013B(C).

ll - Close manual valve G41 F029. ,

Close Fuel Pool isolation valves F037B(C) and F038B(C).

Close Fuel Pool Suction valve F070)(C) to return to the Shutdown Cooling Vode.

7.3 Shutdown To Standby Readiness 7.3,1 Close Heat Exchanger Bypass vah e F007A(B,C).

7 3.2 Close injection valve F047A(B,C).

7.3.3 Stop RHR Pump A(B,C).

7.3,4 Close Shutdown Cooling to Pump valve F002A(B,C)..

7.3.5 Close Shutdown Cooling Suctlan valve F012A(B,C).

7.3.6 Close Shutdown Cooling Suc.lon valve F013A(B,C).

7.3.7 Close the Minimum Flow to Suppression Pool valve F022A(B,C).

7.3.8 Close valve P21-F013A(B,0) to secure cooling water flow to the heat exchangers.

7.3.9 Open Flushing Water Supoly valve F026A(B,C).

7.3.10 Open F004A(B,C).

7.3.11 Open F043A(B,C), F017A(B,C), F032A(B,C) and throttle open F033A(B,C) to discharglhg flushing water to Radwaste.

7.3.12 After flushing, close vahes F017A(B,C), F043A(B,C).

F004A(B,C), and F026A.(B,C).

+ .

& GE Nuclear Energy 23A6179AK RFv A SH E 20 t

l 7.3 Shutdown To Standby Readiness (continued) 7.3.13 Lock open the Suppression Pool Suction valve F001 A(B,C).

7.3.14 Open the Minimum Flow to Suppression Pool valve F022A(B,C).

7.3.15 Start the Line Fill Pump C002A(B,C),

7.3.16 Verify that the following annunciator RHR A(B,C) PUMP DISCHARGE LOW PRESSURE is clear.

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& GE Nuclear Energy 23A6179AK SH W 21 AFV A 8.0 TEST MODE 8.1 Prerequisite for Test Mode The System is lined up for Standby Readiness per 4.0.

8.2 Startup of the Test Mode 8.3.1 Open Heat Exchanger cooling water discharge valve P21-F013A(B,C).

8.2.2 To start the respective RHR loop, start RHR Pump A(B,C).

8.2.3 Open Test Retum to Suppression Pool valve F021 A(B,C).

8.2.4 Verify that Minimum Flow to Sup>ression Poo' valve F022A(B,C) closes when flow is greater than lsetpoint).

8.2.5 Monitor Display Format (later) and verify that the rated flow is k 954 m3/ hour.

8.3 Shutdown to Standby Readiness Condition 8.3.1 Close Test R..arn valvt F021 A(B,C).

1 8.3.2 Verify that Minimum Flow to Suppression Pool valves F022A(B,C) open when their respective loop flows drop to less than [later).

8.3.3 Veriff that the Line Fill Pump is running for the respective loop, then stop RHR Pump A(B,C).

II 8.3.4 Close Heat Exchanger cooling water discharge valve P21-F013A(B,C).

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I O GE Nuclear Energy 23A6179AK SH NO. 22 MV A 9.0 OTHER OPERATIONS 9.1 RHR System Flushing NOTE When a reactor shutdown has been scheduled or becomes necessary, coordinate operation of the RHR system flush with -

the Radwaste operation, 9.1.1 Flushing RHR Loop A l

(Flushing of Loop A la typical of Loops B and C.)

9.1.1.1 Operate RHR Loop A in the Suppression Pool Cooling Mode per Subsection 6.0 of this procedure for approximately [later, minutes), then open Heat Exchan er Bypass valve F007A for approximately (later, minutes for crud removal prior to flush ng.

9.1.1.2 Stop RHR pump A and Line Fill pump A.

l 9.1.1.3 Lock closed Suppression Pool Suction valve F001 A.

9.1.1.4 Close Test Retum valve F021 A. l 9.1.1.5 If open, close Minimum Flow valve F022A.

l 9.1.1.6 Locally, close Line Fill pump suction valve F028A.

9.1.1.7 Close Heat Exchanger Bypass valve F007A and open Outlet valve F006A.

9.1.1.8 Locally open Flushing valve F026A to initiate flushing of the heat exchanger outlet piping -

9.1.1.9 Open Discharge to Radwaste valve F032A. Throttle

. F033A to drain to Radwaste.

9.1.1.10 When the conductivity of water being discharged to Radwaste is less than 1 pS/cm2, open the Heat Exchanger Bypass valve F007A and close Outlet valve F006A to begin flushing the heat exchanger and associated piping.

s Q GE Nuclear Energy

,,,,,,, ,,c. es REV A

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9.1.1 Flushing RHR Loop A (conunuw) 9.1.1.11 When the conductivity of water being discharged to Radwaste is less than 1 pS/cm2. close Heat Exchanger Bypass Valve F007A and Flushing Water Supply valve F026A to terminate flushing of the heat exchanger.

9.1.1.12 Open Shutdown Cooling Isolation valve F002A and open Flushing Water Supply valve F014A to initla'e flushing of the pump suction and discharge pipings.

9.1.1.13 When the conductivity of water being discharged to Radwaste is less than 1 pS/cm2, close Discharge to Radwaste valves F033A and F032A and Flushing Water Supply valve F014A to terminate flushing.

9.1.1.14 Close Shutdown Cooling Isolation valve F002A. '

9.1,1,15 If the system is to be aligned for Shutdown Cooling, proceed to Section 7.0 of this procedure.

9.1.1.16 If the system is to be aligned for Standby Readiness, align valves per Section 4 of this procedure.

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O GE Nuclent Energy 23A6179AK soo. 24 Arv A 9.2 Reactor Cavity Drain to the Suppression Pool Surge Tank or to the Suppression Pool When required to drain the reactor cavity pool water to the suppression pool after re' ?llng operations, perform the following steps:

9.2.1 Verify J.41 Section 6.3, steps 6.3.1 through 6.3.4 of SOP-G41 have been completed. Verify that the following valves are open to provide a suction path to the reactor cavity well: G41-F026,026, 001, 002, and 029.

9.2.2 Verify that RHR B(C)is in the Standby Readiness condition per Section 4 of this procedure. Close Suppression Pool Suction isolation vaNo F001B(C).

9.2.3 Locally open Fuel Pool Suction isolatlan valve F070B(C).

9.2.4 Open Shutdown Cooling section isolation valve F002B(C).

9.2.5 Start RHR Pump B(C).

If draining to the suppression pool surge tank (SPH), open valve

'later) to the sur9e tank, and open valve F032B(C) and throttle open "033B(C) to discharge flow to the surge tank, if dralning to the suppression pool, close F033B(C) and F032B(C),

and throttle open F020B(C) to discharge flow to the suppression pool.

9.2.6 After the reactor cavity is drained, return the RHR System to the Standby Readiness condition, and locally close manual valves G41-F026,028,001,002, and 029.

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0 GE Nuclent Energy 23A6179AK RFV A sMNO. 26 i

10, REFERENCES

! 10.1 Residual Heat Removal System Design Specification,22A6275, j Revision 2, PAE NO. 3.52.

! 10.2 Residual Heat Removal System P&lD,795E880, Revision 2, PAE NO. 3.53.

10.3 Resl dual Heat Removal System Process Diagram,796E327,

Revision 3, PAE NO. 3.54.

1 10.4 Residual Heat Removal System IBD,137C8326, Revision 1 PAE NO. 3.55.

10.5 Emergency Operation Procedure [ PPE 1.B.21,23A6146, draft).

10.6 Reactor Building Cooling Water System P&lD,

, Toshiba Drawing No, NT-5000071, Revision 2, PAE NO.1,131.

10.7 Reactor Buildin Cooling Water System IBD, Toshibs Drawin No. 3W1UO236, Revision 2, PAE NO. 3.133.

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& GE Nuclear Energy 23A617bAK A

SH NO. 26 REV 9

j ENCLOSURE 1. RHR SYSTEM ELECTRICAL LlNEUP, DIVISION A COMPONENT DESCRIPTION BREAKER NO. $1ATUS/ POSITION or CONTROL SW C001 RHR Purro A later. Open C002A L6ne Fill Purr; A lJter Open F001A Suppression Pool Suction later Closed F002A Shutdown Suction isolat6on later Closed F006A Heat Erchanoer Outlet later Closed F007A Heat Erenanoer Bypass later Closed F012A Shutdown Coolino isolaten later Closed F013A Shutdown Coolina isolaten later Closed F021A pst Retum to Suppression Pool later' Clossd F022A ' Minimum Flow to Supp Pool later Closed F032A DischarQe to L60uid Waste Isolation later Closed F033A Discharge to LtQuid Waste isolaton later Closed F034A Hx Exchancer_ Service Water Disch. later Closed F047A Inloction later Closed F049A infection Check Bypass later Closed I

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& GE Nuclear Energy 23A617tiAK SW. 27 AEV A 1

ENCLOSURE 2. RHR SYSTEM ELECTRICAL LINEUP, DIVISIONS B & C COMPONENT DESCRIPATION BREAKER NO, STATUS / POSITION or CONTROL SW C0018,C RHR Pump later Open C002B,C Line Fill Pump later Open F0018.C Suppress 6on Pool Suet 6on later Closed F0028 C Shutdown Sucten isolat6on __later Closed F0068.C Heat Exchanoer inlet later Closed F007RC Heat Erchanoer Bypass later Closed F 0128,C Shutdown Coohna isolation later Closed F 0138,C Shutdown Coohno isolation later Closed F 0218,0 Test Return to Suppressen Pool later Closed F0226,C Mirumum Flow to SuDo Pool later Closed F0320,C Discharoe to L6 aux! Weste Isolation later Closed F0338,C Dischavoe to Llould Waste isolaton late

  • Closed F0340,0 Hr Exchanoer Servoo Water Disch later Closed F0378.C Fuel Poolisolation later Closed F0388,C Fuel Pool isolation later Closed F0478.C Injection later Closed F 0498,C Insecten Check Ovpass later Closed F0598,C Driae:: Soray later Closed F0608 C Or;;.;;: Sorav later Closed F0658,C Wetwell Spray later Closed F0668,C Wetwell Spray later Closed F0708,C Fuel Pool Sueton isolation later Closed 1

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! l GE Nucient Energy ,

Arv A ENCLOSURE 3. RHR SYSTEM DIVISION A VALVE LINEUP VALVE DESCRIPTION SWITCH SWITCH VALVE 1

NUMBER POSITION POSITION ll F001A Suppression Pool Suctiory later LOCKED CLOSE CLOSED ll F002A Shutoown Suctioc isolation later CLOSE/ NORMAL CLOSED ll F 006'A Heat f rchanoer Outlet later AUTO CLOSED F007A Heat Erchanoer Bypass later AUTO CLOSED F012A Shutdown Coolina isolation later AUTO CLOSED F013A Shutdown Coolina isolat6on later AUTO CLOSED II F020A Warrrup to Suppression Pool '

later CLOSE/ NORMAL CLOSED F021A Test Return to Suppression Pool later AUTO CLOSED F022A Minirrum Flow to Supp Pool later AUTO CLOSED ll F032A Otscharoe to Llauid Weste leolation leier CLOSE/ NORMAL CLOSED i

ll F033A Discharge to ugugt Weste isolation later CLOSE/ NORMAL CLOSED F034A Hx Exchanoer RCW Water Disch later AUTO CLOSED F047A infection later AUTO CLOSED ll F048A Testable Check later N/A CLOSED F049A Intection Check Bypass later AUTO CLOSED F063A Manual Shutdown Coohno f actation N/A N/A OPEN g .-

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O GE Nuclear Energy -

23A6179AK SH E G Rfy A ENCLOSURE 4. RHR SYSTEM DIVISION B & C VALVE LINEUP t

VALVE DE50RPT60N SWITCH NO. SWTTCH VALVE POSfTION POSITON  ;

r

, ll F001B C Suppression Pool Sucuon later LOCKED CLOSF CLOSED ll F 002 D,C Shutoown Suction isoistion later CLOSEHORMAL CLOSED ll F 000B C Heat Exchancer Outiet later AUTO CLOSED F0078 C Heat Exchancer Bypass later AUTO CiOSED F 01SB C Shutoown Coolino looietion later AUTO CLOSED ,

Fot3B.O Shutoown Coolino isotauon later AUTO CLOSED F010B.C Menval in!oction Shutoft N/A N 'A OPEN [

ll F020B O Warmup to Suppression Pool later CLOSENORMAL CLOSED F021 B C Test Return to Suppression Pool later AUTO CLOSED F022B C Minimum Flow to Supp. Pool later AUTO CLOSED F0320 C Desche'00 to L mule Westo lootsten later CLOSE40RMAL CLOSED F0338 C Dehame to Louid Weste teuisten later CLOSENORMAL CLOSED F034B C H6st Exchancer RCW Decharos later AUTO CLOSED F037B C Fuel Pool isolation later CLOSENORMAL CLOSED FO)BB O Fuel Pool 6soistion later CLOSEHORMAL CLOSED F 047B,C Infection later AUTO CLOSED F048B C Testable Checa later NiA CLOSED ll F049B C inwion Check Bypaso later CLOSENORMAL CLOSED Fb6GB C Drywell Spray later NORMAL CLOSED F06DB,C Drywell Sprey later NORMAL CLOSED F0660 C Wetwell Spray later AUTO CLOSED ll F070B,C Fuen Pool Sucson teolaten(Manual) N'A N/A CLOSED F084 Manual Shutoown Coolino Shulof' N/A N/A OPEN  ;

F083C Manual Shutdown Coolino Shutoff N/A N/A OPEN

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y GE NucI::r En:rgy 23A6179AK SH NO . 30 mrv A ENCLOSURE 5. MHR SYSTEM INSTRUMEMTATION & CONTROL LINEUP COMPONENT NO. DE SC.RIPTON REQUIRE D POSITON later RHR DIVISION A OUT OF SERVICE Corttrol Switch OFF later RHR DIVISCN B OUT OF SERVICE Controt Switch OFF later HHR DIVISION C OUT OF SERVICE Control Switch OFF later RHR DiVISCN A MANUALINITIATON Switch DISARM tater RHR DIVISION A MANUALINITIATON Switch DISARM tater RHR DIVISCN A MANUAL INITIATON Switch DISARM later RHR DIVISCN A INITIATON SGNAL RESET Switch RESET  !

later RHR DIVISCN B INITLATON SGNAL RESET Switch RESET later RHR DIVISION C INITIATCN SIGNAL RESET Switch RESET later RHR Pump A Moce Switch NORMAL later RHR Pump B Mode Switch NORMAL later RHR Pump C Moce Swttch NORMAL 1,

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