ML17251A108

Informs of Drafting of Leak Detection Procedures in Response to Generic Ltr 88-05 Re Boric Acid Corrosion of Carbon Steel Reactor Pressure Boundary Components in PWR Plants. Subj Procedures Will Be Finalized & Approved by 880610

ML17251A108
Person / Time
Site:	Ginna
Issue date:	05/31/1988
From:	Snow B ROCHESTER GAS & ELECTRIC CORP.
To:	Stahle C NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
GL-88-05, GL-88-5, NUDOCS 8806090280
Download: ML17251A108 (4)

Text

ACCELERATED DI'4UBUTION DEMONST1%ION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8806090280 DOC.DATE: 88/05/31 NOTARIZED: NO DOCKET I FACIL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G

05000244 AUTH.NAME AUTHOR AFFILIATION

'NOW,B.A.

Rochester Gas 6 Electric Corp.

RECIP.NAME RECIPIENT AFFILIATION STAHLE,C.

Document Control Branch (Document Control Desk)

SUBJECT:

Submits addi info to support response to Generic Ltr 88-05 re boric acid corrosion of carbon steel in PWR plants.

DISTRIBUTION CODE:

AOOID COPIES RECEIVED:LTR g ENCL 0 SIZE:

TITLE: OR Submittal: General Distribution R

I NOTES:License

.Exp date in accordance with 10CFR2,2.109(9/19/72).

05000244 D RECIPIENT ID CODE/NAME PD1-3 LA STAHLE,C INTERNAL: ARM/DAF/LFMB NRR/DEST/CEB 8H NRR/DEST/MTB 9H NRR/DOEA TSB ll DO CT REG FILE 01 EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1

RECIPIENT ID CODE/NAME PD1-3 PD NRR/DEST/ADS 7E NRR/DEST/ESB 8D NRR/DEST/RSB 8E NRR/PMAS/ILRB12 OGC 15-B-18 RES/DE/EIB NRC PDR COPIES LTTR ENCL l'

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TOTA'L NUMBER OF COPIES REQUIRED:

LTTR 22 ENCL 0

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ROCHESTER GAS AND'LECTRIC CORPORATION o 89'EAST AVENUE, ROCHESTER, N.K 14649-0001 May 31, 1988 TELEPHONE AREA CODE 7ld 546.2700 U.S. Nuclear Regulatory Commission Document Control Desk Attn:

Mr. Carl Stahle PWR Project Directorate No.

1 Washington, D.C.

20555

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Subject:

Boric Acid Corrosion of Carbon Steel Reactor Pressure Boundary Components in PWR Plants R.E.

Ginna Nuclear Power Plant Docket No. 50-244

Reference:

Generic Letter 88-05 from Frank Miraglia to All PWR Licensees Dated March 17, 1988

Dear Mr. Stahle:

Rochester Gas and Electric presently has procedures in place to detect and find leaks in the main coolant system which have the potential to corrode carbon steel components.

For example, Procedure S-12.2 (Operator Action in the Event of Indication of Significant Increase in Leakage) requires the investigation of very small increases in leak rates.

This procedure has been in effect for more than 10 years,

and, in conjunction with standard Ginna Station practices, had served.

as an acceptable basis for addressing the issue of boric acid corrosion of the primary system, as demonstrated by the fact that such incidents have not been a concern at Ginna Station.

To further enhance this

program, RGGE will increase our efforts in this area, primarily by increasing the formality of the program, as well as its documentation, in accordance with Generic Letter 88-05.

~

Following receipt of Generic Letter 88-05, the data (including a listing of potential locations of small but significant leaks) required. by this letter has been collected and procedures have been drafted.

The procedures document a

program that includes the four components listed in the Generic Letter.

These procedures will be finalized and

'pproved by June 10, 1988 and. will become effective by the end of June 1988.

The period of time between approval and implementation will be used to familiarize all operating shifts with the new procedures and the leak detection program.

8806090280 88053i PDR ADOCK 05000244 P

DCD (po i

The program to be implemented will include the necessary systematic measures to ensure that boric acid corrosion does not lead to degradation of the assurance that the reactor coolant pressure boundary will have an extremely low probability of abnormal

leakage, rapidly propagating failure or gross rupture.

RG&E has also recently received an EPRI Report, RP 2006-18, "A Survey of Boric Acid Corrosion of Carbon and Low-Alloy Steel Pressure Boundary Components in PWR Power Plants",

April 1988, which is germane to this subject.

We are still in the process of reviewing that

report, and plan to integrate additional recommendations as necessary into our program in a timely and controlled manner.

Very truly yours, Bruce A. Snow Superintendent Nuclear Production Subscribed and swor to before me this 9I~ day of 1988.

N ary Public gyNNI.HAUCK thhePks

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MONROECOUNTY Cocnmission Expbes Nov. 30, 1987

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