ML19210E317

Forwards Responses to NRC 790713 Ltr Re SEP Topic IX-3, Station Svc & Cooling Water Sys. Also Forwards Operating Procedures Re Svc Water Failure & Cooling Water Sys Failure. Three Drawings,Available in Central Files Only

ML19210E317
Person / Time
Site:	Oyster Creek
Issue date:	11/28/1979
From:	Nagai Y JERSEY CENTRAL POWER & LIGHT CO.
To:	Fletcher M Office of Nuclear Reactor Regulation
Shared Package
ML19210E318	List: ML19210E317 ML19210E321 ML19210E324 ML19210E326
References
TASK-09-03, TASK-9-3, TASK-RR NUDOCS 7912040327
Download: ML19210E317 (3)

Text

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Jersey Central Power & Light Company

. _DM JEDH Madison Avenue at Punch Bowl Road Momstown, New Jersey 07960 (201)455-8200 November 28, 1979 Mr. Mike Fletcher Systematic Evaluation Program Branch Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Re: Oyster Creek Nuclear Generating Station Docket No. 50-219 SEP Topic IX-3 Station Service and Cooling Water Systems

Dear Mr. Fletcher:

Your telecopied letter of July 13, 1979, transmitted six questions concerning the subject topic.

The information you requested is provided in the enclosed attachment and drawings.

Very truly yours,

<l $ .

,it t0SHITO NAGAI sw cc: T. Wambach - NRC T. E. Tipton J. Knubel W. R. Schmidt - MPR 1472 29 A035

.s 9(2040 M

///

Aw eu k {!!a Y*bfNURSnarGt.lg4 Jersey Central Power & Ugh: Company is a Member of the General Puthc Utihties System cne

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OYSTER CREEK NUCLEAR GENERATING STATION SEP TOPIC IX-3 STATION SERVICE AND COOLING WATER SYSTEMS Question 1. How much residual heat (Metal and Water) is released during a cooldown from normal operating temperature to 212*F?

Response: As per our telephone conversation with Mr. Fletcher on November 28, 1979, our response to this question will be transmitted as soon as it is availaole.

Question 2. What is the minimum water level at which the Emergency Service Water pumps remain operable?

Response: Submergence required for the Emergency Service Water pump is 30 inches above the suction header of the pump for it to be operable. (Table 3.2-19 of the System Description, Oyster Creek Generating Station). This water level corresponds to an elevation minus one foot (EL-l'0") in the intake structure (Fig. 3.S-2, Environmental Report, Oyster Creek Generating Station).

Question 3. Do the Diesel Generators rely on any external service or cooling water systems?

Response: The Diesel Generator at the Oyster Creek Generating Station does not rely on any external service or cooling water systems.

The generator has its own closed cooling water system which is cooled by air (radiator fan).

Question 4. Discuss the capability for isolation from the Emergency Service Water System of the lines identified as 3"CL and 1 1/2" SW-2 on Drawing 200S-3 for the Cire. and Service Water Systems.

Response: Continuation of both lines (3" and 1 1/2" lines) are shown on Fischer S Porter Drawing SE-S419 (Oyster Creek Chlorination Schematic). Manual valves are available to isolate both lines from the Emergency Service Water Systems.

Question S. What are the required operating actions for loss of the SW, RPc W and and TBCCW Systems? Are these actions covered by ,cocedure?

T472 '30

Response: Actions for loss of the SW, RBCCW and TBCCW are described in the following plant procedures.

Plant P rocedure No. Title of the Procedure 504 Service Water Failure 507.1 Reactor Building Closed Cooling Water System Failure 507.2 Turbine Building Closed Cooling Water System Failure All three procedures are enclosed.

Question 6. Do the ventilation systems which cool safety related equipment or spaces rely on any cooling water systems? What are these systems?

Response: Reactor Building Closed Cooling Water System and Turbine Building Closed Cooling Water System cool safety related equipment and spaces. Please refer to the following enclosed drawings for detail.

Drawing Title BSR 2006 Closed Cooling Water System BSR 2011 HSV Reactor Building BSR 2010 HSC, Office Building, Control &

Cable Room 1472 33I

.