ML17263A618
| ML17263A618 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 03/30/1994 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A585 | List:
|
| References | |
| FR-S.2, NUDOCS 9404190175 | |
| Download: ML17263A618 (14) | |
Text
EOP:
FR-S.2 TITLE:
RESPONSE
TO LOSS OF CORE SHUTDOWN REV:
4 PAGE 1 of 5 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE
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PLANT SUPE INTENDENT c
EFFECTIV DATE CATEGORY 1.0 REVIEWED BY:
9404190175 940414 PDR:-'DDCK 05000244 PDR
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EOP:
FR-S.2
RESPONSE
TO LOSS OF CORE SHUTDOWN REV 4
PAGE 2 of 5 A.
PURPOSE This procedure provides actions to restore the core to an adequate shutdown condition.
B.
ENTRY CONDITIONS/SYMPTOMS l.
ENTRY CONDITIONS This procedure is entered from:
a.
F-O.l, SUBCRITICALITY Critical Safety Function Status
- Tree, on either YELLOW condition.
EOP:
FR-S.2 TITLE:
RESPONSE
TO LOSS OF CORE SHUTDOWN REV: '4 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+
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 Step 2.
WHEN flux is LESS THAN 10 1" amps on any operable
- channel, THEN do Steps lb, c and d.
b.
Check the following:
o Both intermediate range channels LESS THAN 10 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
- c. 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-4S recorder to one source range and one intermediate range channel
EOP:
FR-S.2 TlTLE:
RESPONSE
TO LOSS OF CORE SHUTDOWN REV:
4 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 a.
Perform the following:
- 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. Verify at least one charging pump RUNNING
- b. Perform the following:
- 1) Reset SI if necessary.
- 2) Start one charging pump.
- c. Align boration path:
- 1) Start two BA transfer pumps 2)
Open MOV-350
- 3) Verify BA flow
- d. Verify charging flow path:
o Charging valve to loop B-cold leg (AOV-294)
OPEN o
Charging flow control valve (HCV-142)
DEMAND AT 0%
- 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.1, REACTOR MAKEUP CONTROL MALFUNCTION.
- d. Manually align valves and verify flow.
EOP:
FR-S. 2
RESPONSE
TO LOSS OF CORE SHUTDOWN REV 4
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
- b. Continue boration until adequate shutdown margin verified.
- c. Stop boration 5 Return To Procedure And Step In Effect.
-END-
FR-S.2
RESPONSE
TO LOSS OF CORE SHUTDOWN REV:
4 PAGE 1 of 1 FR-S.2 APPENDIX LIST TITLE 1)
FIGURE SDM PAGES 1
I
0
EOP: ~
FR-S.2 TITLE:
RESPONSE
TO LOSS OF CORE SHUTDOWN REV:
4 PAGE 1 of 1 NOTE:
FIGURE SDM 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 PPM CONSERVATISM INCLUDED 800 600 400 BORATE 200 o
~
BURNUP INCREMENTS 100 MWD/MTU 0
1000 2000 3000'000 5000 6000 7000 8000 9000 10000 11000 12000 CYCLE 24 BURNUP (MWD/MTU)
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