ML13317B088

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Informs That Chloride Monitoring Capability Will Be Installed Per NUREG-0737,Item II.B.3,in Response to NRC Rejecting Util Decision to Eliminate Chloride Monitoring.Addl Design Info Will Be Submitted by 820801
ML13317B088
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 04/15/1982
From: Baskin K
Southern California Edison Co
To: Crutchfield D
Office of Nuclear Reactor Regulation
References
RTR-NUREG-0737, RTR-NUREG-737, TAC-44478, TASK-2.B.3, TASK-TM NUDOCS 8204200192
Download: ML13317B088 (2)


Text

Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD. CALIFORNIA 91770 K. P. BASKIN TELEPHONE MANAGER OF NUCLEAR ENGINEERING, April 15, 1982 1213) 572-1401 SAFETY, AND LICENSING Director, Office of Nuclear Reactor Regulation Attention:

D. M. Crutchfield, Chief Operating Reactors Branch No.

5 C

Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Gentlemen:

Subject:

Docket No. 50-206 NUREG-0737, Item II.B.3, Post-Accident Sampling Capability San Onofre Nuclear Generating Station Unit 1

Reference:

1. Letter, D. M. Crutchfield, NRC, to Robert Dietch, SCE, NUREG-0737 Item II.B.3, Post Accident Sampling Capability San Onofre Unit 1, January 19, 1982
2. Letter, K. P. Baskin, SCE, to D. M. Crutchfield, NRC, NUREG-0737,Section II.B.3, Post-Accident Sampling Capability, March 18, 1981 Reference 1 completed your review of Reference 2, which was a justification of our intention to delete chloride monitoring from the subject post-accident sampling requirement.

Your conclusion stated that our decision to eliminate chloride monitoring is not acceptable and provided a basis for that decision.

This correspondence is to inform you of our intention to install the chloride monitoring capability at San Onofre Unit 1. The chloride analysis methodwill consist of an in-line chloride monitor with backup sampling using existing equipment to obtain a diluted grab sample of primary coolant which will be analyzed for chloride concentration. The diluted grab sample will provide assurance that the in-line monitor is giving an accurate determination of the.chloride concentration in the primary coolant. In addition we will be modifying the post-accident sampling system to perform in-line primary coolant dissolved oxygen analysis to enhance the monitoring of coolant corrosion potential.

I20 0 05000206 PDR AD01 PDR L

Mr. D.

April 15, 1982 Preliminary engineering necessary to complete the above discussed modifications has been initiated. When more detailed design information becomes available, we will forward this information to you for your review.

It is currently anticipated that we will supply this information to you by August 1, 1982. Installation of the oxygen analyzer and the in-line chloride monitor is targeted to take place during our 1983 refueling outage which is currently scheduled for approximately Mid-1983.

If you have any questions please let me know.

Very truly yours,