ML20087L593

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Ao:On 740406,during Performance of Containment Isolation Valves Leak Tests,Two second-off Valves from Containment Found to Leak in Excess of 2000 Cc/Minute.Cause Not Stated. Leak Tests Ongoing.Valves Will Be Repaired & Retested
ML20087L593
Person / Time
Site: Point Beach NextEra Energy icon.png
Issue date: 05/03/1974
From: Burstein S
WISCONSIN ELECTRIC POWER CO.
To: Oleary J
US ATOMIC ENERGY COMMISSION (AEC)
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ML20087L573 List:
References
NUDOCS 8403270288
Download: ML20087L593 (2)


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q 231 WEST MICillGAN,MlLWAUKEf, WISCONSIN 53201

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May 3, 1974 Mr., John F. O' Leary, Director Directorate of Licensing U. S. Atomic Energy Commissioit i

Washington, D. C.

20545

Dear Mr. O' Leary:

DOCKET NO. 50-266 POINT EEACH NUCLPAR PLANT LEAKAGE TESTS OF ISOLATION VALVES 1

This letter is to report the details of an abnormal occurrence at Point Beach Nuclear Plant, Facility Operating License' No. DPR-24, as defined by Section 15.1.a.F of the

, Technical Specifications.

This written report is submitted

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in accordance with Section 15.6.6.A.2 of the Technical Speci-fications and follows a telephone report on the subject made to Mr. K. R. Baker'of Region III, Directorate of Regulatory

'oporneinne april ??, -10'; a, m e,anniega.37.cncti7n 15,g,g,3,1 nn of the Technical Specifications.

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l On April 6, 1974, Unit 1 at Point Beach Nuclear Plant was removed from service to conduct the second refueling of the 7

unit.

During the period of the shutdown, presently estimated at seven weeks, leak tests of containment isolation valves are being conducted in accordance with Section 15.4.4.III of the Point Beach Technical-Specifications.

To date, two valves, in both cases second-off valves from the containment, have been found to~ leak in excess of 2000 cc/ min.

We consider containment, isolation valves which exhibit leakage beyond this figure to be reportable items.

At this date approximately 70% of the containment isolation valves have been leak tested an~d testing of the re-mainder is'in progress.

Should other valves be found to have leakage in excess of 2000 cc/ min we will inform the Region III DRO inspector by telephone within the required twenty-four hour time period.

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44 2-May 3, 1974 Mr. John F. O' Leary' 3

It is our intention to repair the valves in ques-tion and retest following repair.

Following the completion of all surveillance testing and repair.(where required) of the Unit 1 containment isolation. valves, we will submit a

' followup report describing the initial leakage, repair and retest of any containment isolation. valve which does not meet the~ initial tecc critaria, as described above.

f Very-truly yours, D

I Sol Burstein Exect ive Vice President 4

Mr. James G. Keppler, Regional' Director i

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Directorate of Regulatory Operations,' Region III i

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