ML20045F670
| ML20045F670 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 06/03/1993 |
| From: | Marlow T ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B293 | List: |
| References | |
| AP-RCC.1, NUDOCS 9307080215 | |
| Download: ML20045F670 (6) | |
Text
- V E0P ilTLE:
AP-RCC.1 CONTINUOUS CONTROL ROD WITHDRAWAL / INSERTION PAGE 1 of 6 l
ROCHF. STER GAS AND' ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER r
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TECHNICAL REVIEW t
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j PORC REVIEW DATE i
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EFFECTIVE DATE F
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$ATEGORY 1.0 REVIEWED BY:
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93070B0215 930628 7""24:{
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l REV: 5 AP-RCC.1' CONTINUOUS CONTROL ROD WITHDRAWAL / INSERTION l
PAGE'2 of 6 10.
A.
PURPOSE - This procedure provides the steps necessary to mitigate a continuous control rod motion transient.
B.
ENTRY CONDITIONS / SYMPTOMS 1.
SYMPTOMS - The symptoms of CONTINUOUS CONTROL ROD WITHDRAWAL / INSERTION are; a.
Unwarranted Control Rod motion, or b.
Annunciator C-22, ROD WITHDRAWAL BANK D HIGH 95%,
lit, or c.
Any rod insertion limit alarm (panel C).
O 4
a 10P; TITLE:
REV: 5 AP-RCC.1 CONTINUOUS CONTROL ROD WITHDRAWAL / INSERTION PAGE 3 of 6 s
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP CAUTION o IF AT ANY TIME DURING THIS PROCEDURE, A REACTOR TRIP OR SI OCCURS, THEN E-0, REACTOR TRIP OR SAFETY INJECTION, SHALL BE PERFORMED.
o IF ROD INSERTION IS OCCURRING, VERIFY THAT IN MOTION IS NOT REQUIRED BEFORE CONTINUING WITH THIS PROCEDURE.
- +*
NOTE:
Step 1 is an IMMEDIATE ACTION step.
Evaluate Rod Control System Operability:
a.
Place Rod Control Bank Selector Switch to MANUAL
- b. Verify control rod notion stops
- b. Manually trip the reactor and go O
to E-0, REACTOR TRIP or SAFETY INJECTION.
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111LE:
REV: 5 AP-RCC.1 CONTINUOUS CONTROL ROD WITHDRAWAL / INSERTION PAGE 4 of 6 O
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP CAUTION IF ANY INSTRUMENT CHANNEL FAILURE INDICATED, THEN EVALUATE OTHER INPUTS TO TAVG AND TREF TO DETERMINE REQUIRED ACTIONS.
Verify Tavg - TRENDING TO TREF l Manually operate control rods 2
and/or adjust turbine load as necessary to restore Tavg to normal.
3 Verify Control Rods Operable In Manual:
- a. Insert / withdraw control rods to MRPI transition
- b. Verify MRPI indicates control
- b. Consult Plant Staff and Tech rod motion Spec section 3,10 to determine operability of rod control system and go to Step 4
- c. Restore control rods to desired position 4 Check RCS Tavg Channel IE any Tavg channel malfunction is Indications:
indicated. THEN refer to ER-INST.1, REACTOR PROTECTION BISTABLE DEFEAT o All 4 channels indicate AFTER INSTRUMENTATION LOOP FAILURE.
approximately the same value o All 4 channels responding to the power change O
)-
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E0P:
TITLE:
REV: 5 AP-RCC.1 CONTINUOUS CONTROL ROD WITHDRAWAL / INSERTION PAGE 5 of 6 O
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP 5 Check Turbine 1st Stage H PI-485 malfunction is indicated, Pressure Channel, PI-485 -
THEN refer to ER-INST.1, REACTOR APPROXIMATELY EQUAL TO PI-486 PROTECTION BISTABLE DEFEAT AFTER INSTRUMENTATION LOOP FAILURE.
6 Check NIS PR Indication:
H a NIS PR channel malfunction is indicated, THEN defeat affected o All PR total channel indicators channel (refer to ER-NIS.3, PR
- APPROXIMATELY EQUAL MALFUNCTION).
o All AI indicators -
}
APPROXIMATELY EQUAL 7 Establish Stable Plant Conditions:
a.
Tavg - TRENDING TO TREF a.
Insert control rods or, if O*
necessary, adjust turbine load to match Tavg to Tref.
- b. PRZR pressure - TRENDING TO b Verify proper operation of PRZR 2235 PSIG heaters and spray or take manual control of PRZR pressure controller 431R.
E pressure can NOT be centrolled. THEN refer to AP-PRZR.1, ABNORMAL PRESSURIZER PRESSURE.
- c. PRZR IcVel - TRENDING TO PROGRAM
- c. Verify proper operation of charging pump speed controllers or take manual control of speed controllers to control PRZR level.
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- d. Rod insertion limit alarms -
- d. Borate as necessary and withdraw EXTINGUISHED control rods to clear insertion limit alarms (refer to affected rod bank alarm response procedures if necessary),
- e. NIS PR AI - WITHIN i 5% OF
- e. Borate / dilute to restore AI to TARGET VALUE within limits.
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(OP3 IIILE:
-j REV: 5 AP-RCC.1 CONTINUOUS CONTROL ROD WITHDRAWAL / INSERTION PAGE 6 of 6 i
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED STEP i
NOTE: Refer to Technical Specification 3.10 for control rod operability l
d requirements.
8 Notify Higher Supervision l
9 Return To Procedure Or Guidance In Effect'
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