ML19323G962

Application to Amend Tech Specs,Implementing Temporary Change in Setpoint Values of Three BSEP-1 Safety Relief Valves.Fee Encl

ML19323G962
Person / Time
Site:	Brunswick
Issue date:	05/30/1980
From:	Utley E CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML19323G963	List: ML19323G962 ML19323G966
References
NO-80-797, NUDOCS 8006090325
Download: ML19323G962 (2)

Text

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Carolina Power & Light Company May 30, 1980 File: NG-3514(B) SERIAL NO: NO-80-797 Office of Nuclear Reactor Regulation _

ATIENTION: Mr. T. A. Ippolito, Chief Operating Reactors Branch No. 3 United Staten Nuclear Regulatory Commission Washingian, D. C. 20555 BRUNSWICK STEAM ELECTRIC PLANT UNIT NO. 1 DOCKET No. 50-325 ,

LICENSE NO. DPR-71 REQUEST FOR LICENSE AMENDMENT SAFETY-RELIEF VALVE SETPOINTS Dea: Mr. Ippolito:

In accordance with the Code of Federal Regulations, Title 10, Part 50.90 and Part 2.101, Carolina Power & Light Company (CP&L) hereby requests revis1ons to the Technical Specifications for its Brunswick Steam Electric Plant (BSEP) Unit No. 1. This change implements a temporary change in the setpoint values of three of the BSEP-1 safety-relief valves.

System reserve forecasts for the late summer of 1980 make it desirable for CP&L to split the work originally scheduled for the Spring, 1980 refueling outage on BSEP-1 into two parts. It is our current plan to have a short refueling outage at the present time and to begin a more extensive maintenance and modification outage in mid-September,1980. A major modification effort delayed by this program is the installation of .

T-quenchers in the torus to replace the existing paired discharge line design.

• In order to provide additional assurance that the health and safety of the public is not affected by this delay, CP&L is requesting

+ this Technical Specification change to increase the difference in the j.

setpoint values of the safety-relief valves on each pair of discharge lines. The setpvint differences are to be increased by lowering three valve setpoints by 10 psi each. This change will provide each valve pair with a total of 20 psi difference in setpoints. There have been no cases of simultaneout,or near-simultaneous openings of safety-relief valve pairs with this large a differential in setpoint pressure.

411 Fayetteville Street

• P. O. Box 1551

• Raleigh, N. C. 27602 800609.0 ) .

1 1 .

j .

. I 4

i i

I j While the setpoint decrease provides an adequate differential, 3 it does not reduce the setpoint to a value so low that problems _ with

] valve simmer are expected. In fact, the lowest setpoint now requested,.

! 1095 psig, is still 15 psi above the low setpoints with which the s Brunswick units were originally licensed and operated. When the safety-relief valve discharge line modifications are completed, the three safety-relief valves' setpoints trill be restored to their current I,

settings, i

j 'The attached page shows the necessary revisions to the l Brunswick Unit No. 1 Technical Specifications. The changes are shown by a vertical bar in the right hand margin. In accordance with 10CFR170.12(c), we have determined that this request constitutes a Class III amendment. Accordingly, our check far $4000 is attached.

4 Your prompt response to this request is appreciated.

Yours very truly,

! E.'E. Utley

) A(

j Executive Vice President

j. Power Supply and Engineering & Construction

Sworn to and subscribed before me this 34CZ2 ///

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My commission expires: ,u . [/7,fd CSS /je (0899)

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