ML20138H679
| ML20138H679 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 12/31/1996 |
| From: | Brinkman D NRC (Affiliation Not Assigned) |
| To: | Cross J DUQUESNE LIGHT CO. |
| References | |
| TAC-M96558, NUDOCS 9701060172 | |
| Download: ML20138H679 (4) | |
Text
l December 31, 1996 i
Mr. J. E. Cross President - Generation Group Duquesne Light Company Post Office Box 4 Shippingport, PA 15077
SUBJECT:
CHANGE TO BASES OF BEAVER VALLEY POWER STATION, UNIT N0. 2, TECHNICAL SPECIFICATION 3/4.5.4 (TAC NO. M96558)
I
Dear Mr. L?oss:
J By letter dated September 9, 1996, as supplemented December 20, 1996, Duquesne Light Company submitted proposed changes to the Bases for Beaver Valley Power Station, Unit No. 2 (BVPS-2) Technical Specification (TS 3/4.5.4).
The proposed changes are editorial and clarification in nature. The changes will better reflect the Action Statement wording in terms of the time required to reach Mode 4.
The NRC staff has reviewed the proposed changes to the Bases for BVPS-2 TS 3/4.5.4 and we'have no objection to the prcposed change. A copy of the revised Bases page 3/4 5-4 is enclosed for your use.
Sincerely,
/s/
Donald S. Brinkman, Senior Project Manager z
Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-412
Enclosure:
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December 31, 1996 Mr. J. E. Cross President - Generation Group Duquesne Light Company Post Office Box 4 i
Shippingport, PA 15077
SUBJECT:
CHANGE TO BASES OF BEAVER VALLEY POWER STATION, UNIT NO. 2, TECHNICAL SPECIFICATION 3/4.5.4 (TAC NO. M96558)
Dear Mr. Cross:
By letter dated September 9, 1996, as supplemented December 20, 1996, Duquesne Light Company submitted proposed changes to the Bases for-Beaver Valley Power Station, Unit No. 2 (BVPS-2) Technical Specification (TS 3/4.5.4).
The proposed changes are editorial and clarification in nature. The changes will better reflect the Action Statement wording in terms of the time required to reach Mode 4.
The NRC staff has reviewed the proposed changes to the Bases for BVPS-2 TS
-3/4.5.4 and we have no objection to the proposed change. A copy of the revised Bases page 3/4 5-4 is enclosed for your use.
Sincerely,
'[
s Donald S. Brinkman, Senior Project Manager Project Directorate I-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-412
Enclosure:
BVPS-2 TS Bases Page B 3/4 5-4 cc w/ enc 1:
See next page
l J. E. Cross Beaver Valley Power Station j
Duquesne Light Company Units 1 & 2 cc:
Jay E. Silberg, Esquire Bureau of Radiation Protection Shaw, Pittman, Potts & Trowbridge Pennsylvania Department of 2300 N Street, NW.
Environmental Resources 4
Washington, DC 20037 ATTN:
R. Barkanic Post Office Box 2063 R. K. Brosi, Manager Harrisburg, PA 17120 Nuclear Safety Department (BV-A)
Duquesne Light Company Beaver Valley Power Station Mayor of the Borrough of PO Box 4 Shippingport Shippingport, PA 15077 Post Office Box 3 Shippingport, PA 15077 Comissioner Roy M. Smith West Virginia Department of Labor Regional Administrator, Region I Building 3, Room 319 U.S. Nuclear Regulatory Comission Capitol Complex 475 Allendale Road Charleston, WVA 25305 King of Prussia, PA 19406 John D. Borrows Resident Inspector Director, Utilities Department U.S. Nuclear Regulatory Comission Public Utilities Comission Post Office Box 298 180 East Broad Street Shippingport, PA 15077 Columbus, OH 43266-0573 Director, Pennsylvania Emergency Duquesne Light Company Management Agency Beaver Valley Power Station Post Office Box 3321 PO Box 4 Harrisburg, PA 17105-3321 Shippingport, PA 15077 ATTN:
S. C. Jain, Vice President Ohio EPA-DERR Nuclear Services (BV-A)
ATTN: Zack A. Clayton Post Office Box 1049 Columbus, OH 43266-0149 Dr. Judith Johnsrud National Energy Comittee Sierra Club 433 Orlando Avenue State College, PA 16803
O
.[
NPF-73 l
EMERGENCY CORE COOLING SYSTEMS BASES 3/4.5.4 SEAL INJECTION FLOW (Continued)
ACTIONS A.
With seal injection flow exceeding its limit, the amount of charging flow available to the RCS may be reduced.
Under this condition, action must be taken to restore the flow to l
below its limit.
The operator has 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from the time the flow is known to be above the limit to correctly position the
- manual valves and thus be in compliance with the accident analysis.
The completion time minimizes the potential l
exposure of the plant to a LOCA with insufficient injection flow and ensures that seal injection flow is restored to or below its limit.
This time is conservative with respect to the completion times of other ECCS LCOs; it is based on l
operating experience and is sufficient for taking corrective actions by operations personnel.
When the required actions cannot be completed within the required completion time, a controlled shutdown must be initiated.
The plant must be brought to at least MODE 3 within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and to MODE 4 within the following 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
The allowed completion times are reasonable,- based on operating experience and normal cooldown rates, and do not challenge plant safety systems or operators.
SURVEIT TANCE REOUIREMENTS (SR)
SR 3.5.4.1 Verification every 31 days that the manual seal injection throttle valves are adjusted to give a flow within the limit ensures that proper manual seal injection throttle valve position, and hence, proper seal injection flow, is maintained.
The Frequency of 31 days is based on engineering judgment and is consistent with other ECCS valve Surveillance Frequencies.
The Frequency has proven to be acceptable through operating experience.
As noted, the Surveillance is not required to be performed until 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after the RCS pressure has stabilized within a i 20 psig range of normal operating pressure.
The RCS pressure requirement is specified since this configuration will produce the required pressure conditions necessary to assure that the manual valves are set correctly.
The exception is limited to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> to ensure that the Surveillance is timely.
BEAVER VALLEY - UNIT 2 B 3/4 5-4 Revised by NRC letter dated December 31, 1996
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