ML17263A261
| ML17263A261 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/21/1993 |
| From: | Marlow T ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A255 | List: |
| References | |
| AP-RCS.3, NUDOCS 9305140024 | |
| Download: ML17263A261 (6) | |
Text
EOP:
AP-RCS
~ 3 HIGH REACTOR COOLANT ACTIVITY REV' PAGE 1 of 6 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE PLANT SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
9305140024
'730505 PDR ADQCK 05000244 PDR
AP-RCS.3 HIGH REACTOR COOLANT ACTIVITY REV 6
PAGE 2 of 6
A.
PURPOSE This procedure provides guidance necessary to operate the plant with indication of high reactor coolant activity.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
SYMPTOMS The symptoms of. HIGH REACTOR COOLANT ACTIVITY are; a.
Unexplained increase in letdown line monitor, R-9, or b.
Sampling indicates I-131 equivalent GREATER THAN 0.2 uCi/gm, or c.
Sampling indicates gross degassed activity GREATER THAN 20 uCi/gm, or d.
Sampling indicates that total specific activity exceeds 84/E.
EOP:
AP-RCS-3 TITLE:
HIGH REACTOR COOLANT ACTIVITY REV' PAGE 3 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION o
IF LETDOWN FLOW EXCEEDS 60
- GPM, THEN LOCALLY MONITOR D/P ACROSS THE CVCS DI(S)
TO VERIFY THAT FLOW IS CONTINUING AND THAT RELIEF VALVE, V-209, HAS NOT LIFTED.
o LETDOWN FLOW THROUGH THE DI'S SHOULD BE LIMITED TO 90 GPM.
NOTE:
Conditions should be evaluated for site contingency reporting (Refer to EPIP-1.0, GINNA STATION EVENT EVALUATION AND CLASSIFICATION.
1 Verify RCS Activity:
RCS activity -
GREATER THAN NORMAL (Check with HP Department for normal activity)
- b. IF normal activity verified, THEN direct I&C to check operability of R-9, letdown line
- monitor, AND return to normal operations.
EOP:
AP-RCS.3 HIGH REACTOR COOLANT ACTIVITY REV:
6 PAGE 4 of 6
STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2
Increase Letdown Flow To 60 GPM'.
Verify deborating DI isolated DIVERT VLV CATION DEBOR DI AOV-244 IN BYPASS POSITION a.
Place AOV-244 in bypass position.
- b. Place letdown controllers in HANUAL at 40%
~ TCV-130
~ PCV-135
- c. Increase letdown flow as follows:
- 1) Close letdown orifice valve (AOV-200A or AOV-200B)
- 2) Immediately open 60 gpm letdown orifice valve, AOV-202
- d. Adjust low pressure letdown pressure to approximateiy 250 psig e.
Place TCV-130 in AUTO at 105'F
- f. Place PCV-135 in AUTO at 250 psig g.. Adjust charging pump speed and HCV-142 as necessary
AP-RCS
~ 3 HIGH REACTOR COOLANT ACTIVITY REV:
6 PAGE 5 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3
Check Letdown Line Monitor, R-9 LESS THAN 200 MR/HR ABOVE BACKGROUND Evaluate conditions to determine whether local radiation emergency exists (Refer to EPIP 1-13, LOCAL RADIATION EMERGENCY).
CAUTION PLACING A NEW DI IN SERVICE MAY RESULT IN A POSITIVE OR NEGATIVE REACTIVITY ADDITION DUE TO A BORON CHANGE.
4 Direct HP Tech To Sample Letdown DI Efficiency DECONTAMINATION FACTOR GREATER THAN 10 IF DI efficiency is NOT acceptable, THEN place a new mixed bed in service (Refer to S-3.2B, PLACING A MIXED BED DEMINERALIZER IN SERVICE BORON CONCENTRATION DIFFERENT THAN RCS).
5 Evaluate AUX BLDG Radiation Levels:
- a. Direct HP to survey AUX BLDG
- b. Check AUX BLDG radiation monitors NORMAL
~ R-4
~ R-9
~ R-10B
~ R-13
~ R-14
- 1) Direct HP Tech to survey AUX BLDG areas as necessary.
- 2) Evaluate conditions to determine whether local radiation emergency exists (Refer to EPIP 1-13, LOCAL RADIATION EMERGENCY).
EOP:
AP-RCS.3 HIGH REACTOR COOLANT ACTIVITY REV:
6 PAGE 6 of 6
STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6
Determine If Plant Operation Can Continue (Consult Plant staff if necessary)
OPERATION CAN CONTINUE IF plant shutdown is required, THEN refer to 0-2.1, NORMAL SHUTDOWN TO HOT SHUTDOWN.
NOTE:
Refer to 0-9.3, NRC IMMEDIATE NOTIFICATION, for reporting requirements.
7 Notify Higher Supervision
-END-