ML17263A276

Rev 3 to EOP FR-S.2, Response to Loss of Core Shutdown.

ML17263A276
Person / Time
Site:	Ginna
Issue date:	04/14/1993
From:	Marlow T ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17263A269	List: ML17263A268 ML17263A270 ML17263A271 ML17263A272 ML17263A273 ML17263A274 ML17263A275 ML17263A276
References
FR-S.2, NUDOCS 9305140057
Download: ML17263A276 (14)

Text

EOP: FR-S.2 RESPONSE TO LOSS OF CORE SHUTDOWN REV: 3 PAGE 1 of 5 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIE DATE PLANT SUPERINTENDENT E FECTIVE DATE CATEGORY 1.0 REVIEWED BY: 9305i40057 930505 PDR ADOCK 05000244~F PDR

FR-S.2 RESPONSE TO LOSS OF CORE SHUTDOWN REV: 3 PAGE 2 of 5 A.PURPOSE-This procedure provides actions to restore the core to an adequate shutdown condition.

B.ENTRY CONDITIONS/SYMPTOMS 1.ENTRY CONDITIONS

-This procedure is entered from: a.F-0.1, SUBCRITICALITY Critical Safety Function Status Tree, on either YELLOW condition.

EOP: FR-ST 2 RESPONSE TO LOSS OF CORE SHUTDOWN REV: 3 PAGE 3 of 5 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+5 R/hr.o Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.

1 Check Intermediate Range Flux: a.Flux-EITHER CHANNEL LESS THAN 10-10 AMPS a.Continue with Ste~2.WHEN flux is LESS THAN 10 amps on any operable channel, THEN do Steps lb, c and d.b.Check the following:

o Both intermediate range channels-LESS THAN 10 AMPS b.Continue with step 2.WHEN either condition met, THEN do Steps lc and d.-OR-o Greater than 20 minutes since reactor trip c.Verify source range detectors ENERGIZED cd Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2 of 2).IF source ranges can NOT be restored, THEN refer to ER-NIS.1, SR MALFUNCTION, and go to Step 2.d, Transfer Rk-45 recorder to one sour'ce'ange and one intermediate range channel

EOP: FR-Ss2 T!TLE: RESPONSE TO LOSS OF CORE SHUTDOWN REV'PAGE 4 of 5 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: If offsite power is lost coincident with SI, then MCC C and MCC D lockout relays must be reset to restore BA and RMW pumps.2 Initiate Immediate Boration Of RCS: a.Check SI status: o All SI annunciators-EXTINGUISHED o All SI pumps-OFF IN AUTO b.Verify at least one charging pump-RUNNING!c.Align boration path: 1)Start tue BA transfer pumps 2)Open MOV-350 I 3)Verify BA flow!d.Verify charging flow path:!o Ch'arging valve to loop B cold 18g"-'(AOV-294)

-OPEN~, g'Ch'arging flow control valve (HCV-142)-DEMAND AT 0%1)Complete the immediate actions of E-O, REACTOR TRIP OR SAFETY INJECTION, while continuing with this procedure 2)IF SI flow indicated, THEN go to Step 3.IF NOT, THEN go to Step 2b.b.Perform the following:

1)Reset SI if necessary.

2)Start one charging pump.c.Initiate normal boration at maximum rate using the boric acid flow control valve, FCV-110A.IF flow can NOT be established, THEN refer to ER-CVCS.l, REACTOR MAKEUP CONTROL MALFUNCTION.

d.Manually align valves and verify flow.

EOP: FR-ST 2 TITLE: RESPONSE TO LOSS OF CORE SHUTDOWN REV: 3 PAGE 5 of 5 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 3 Check Source Range Channels: o Source range channels-ENERGIZED o Source range channels startup rate-ZERO OR NEGATIVE Continue boration until adequate shutdown margin is verified by RCS sample (Refer to Figure SDM).4 Verify Adequate Shutdown Margin a.Direct HP to sample RCS for boron concentration I b.Verify boron concentration-GREATER THAN REQUIREMENTS OF FIGURE SDM b.Continue boration until adequate shutdown margin verified.c.Stop boration 5 Return To Procedure And Step In Effect.-END-

FR-S.2 TITLE%RESPONSE TO LOSS OF CORE SHUTDOWN REV: 3 PAGE 1 of 1 FR-S.2 APPENDIX LIST TITLE PAGES 1)FIGURE SDM

EOP: FR-ST 2 TITLE: RESPONSE TO LOSS OF CORE SHUTDOWN REV: 3 PAGE 1 of 1 FIGURE SDM NOTE: o Curve includes allowance for one stuck rod.Add 100 ppm for each additional stuck rod.o To obtain core burnup, use PPCS turn on code BURNUP.BORON CONCENTRATION (PPM)1800 1600 BORON INCREMENTS 20 PPM 1400 1200 1000 ADEQUATE SDM 100 PPH CONSERVATISH INCLUDED 800 600 400 TE BORA 200 BURNUP INCREMENTS 100 MWD/HTU 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 CYCLE 23 BURNUP (HWD/HTU)