ML17250B139
| ML17250B139 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| FR-S.2, NUDOCS 9004200763 | |
| Download: ML17250B139 (8) | |
Text
EOP:
FR-S.2 TITLE:
RESPONSE
TO LOSS OF CORE SHUTDOWN REV:
2 PAGE 1 of 4 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE P
T SUPERIN EN ENT
'7 10 EFFE TIVE DATE QA~
NON-QA CATEGORY 1.0 GiNNASTATlON i'T DATE 1 I'A-REVIEWED BY:
V004200763 9004ip PDR ADOCg 0500024y P
PNU DATQ TJMF.:
EOP:
FR-S.2
RESPONSE
TO LOSS OF CORE SHUTDOWN REV 2
PAGE 2 of 4 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-S.2 TITLE:
RESPONSE
TO LOSS OF CORE SHUTDOWN REV 2
PAGE 3 of 4 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10-
~ R/hr.
1 Check Intermediate Range Flux:
- a. Flux - EITHER CHANNEL LESS THAN 1O xo AMPS
- a. Perform the following:
- 1) IF neither intermediate range channel is decreasing THEN initiate boration.
- b. Check the following:
o Both intermediate range channels
- LESS THAN 1O-xo AMPS
- 2) Continue with Step 2.
WHEN flux is LESS THAN 10-'~ amps on any operable
- channel, THEN do Steps 1b, c and d.
- b. Continue with step 2.
WHEN either condition met, THEN do Steps 1c and d.
-OR-o Greater than 20 minutes since reactor trip
- c. Verify source range detectors-ENERGIZED
- d. Transfer Rk-45 recorder to one source range and one intermediate range channel
- c. Manually energize source range detectors by depressing P-6 permissive defeat pushbuttons (2
of 2).
IP source ranges can NOT be
- restored, THEN refer to ER-NIS.1, SR MALFUNCTION, and go to Step 2.
EOP:
FR-S.2 TITLE:
RESPONSE
TO LOSS OF CORE SHUTDOWN REV:
2 PAGE 4 of 4 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Check Source Range Channels ZERO OR NEGATIVE STARTUP RATE Borate until source range startup rate is negative or zero (Refer to AP-CVCS.2, IMMEDIATE BORATION).
CAUTION BORATION SHOULD CONTINUE TO OBTAIN ADEQUATE SHUTDOWN MARGIN DURING SUBSEQUENT ACTIONS.
3 Return To Procedure And Step In Effect.
-END-
fg