ML20084U896

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Submits Current Status Rept on AO 50-265/74-32;on 741226-27, MSIV 2-203-1A,B & C Exceeded Leak Rate Limits.Valves Cleaned & Lapped.Ao 50-265/75-9 Reporting 750314 Event to Be Submitted When Work Complete
ML20084U896
Person / Time
Site: Quad Cities Constellation icon.png
Issue date: 03/18/1975
From: Kalivianakis N
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
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ML20084U899 List:
References
NUDOCS 8306290358
Download: ML20084U896 (2)


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  • 'C.gI Cuad Citicshc6eratino 5tation Po;t Off.ce Box 216 ~ ,

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Cordova, litinois 61242

'h6 -' Telephone 309/6S4 2241 NJK-75-140 March 18, 1975 i'

1 J. Keppler, Regional Director Directorate of Regulatory Operatlons ,

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U. S. Nuclear Regulatory Commission

  • 799 Roosevelt Road l Glen Ellyn, IL 60137

Dear Mr. Keppler:

The purpose of this letter is to provide you with a current status report concerning Abnormal Occurrence Report A0 50-265/74-32 On December 26 and 27,1974, Unit Two main steam isolation valves (MSIVs) were leak rate tested. The following results were reported.

Within Leak Rate Limitations: MSIVs 2-203-lC, 2-203-ID and 2-203-20 Exceeded Leak Rate Limitations: MSIVs 2-203-1A, 2-203-IB and 2-203-2C.

Due to water leakage through the inboard MSIVs 2-203-1A and 2-203-1B, an accurate numerical leak rate value could not be determined for the respec-tive outboard MSIVs 2-203-2A and 2-203-28.

MSIVs 2-203-lA, 2-203-1B and 2-203-2C were subsequently cleaned and tapped. ,

On March 10, 1975, the following leak rate test results were determined.

MSiv LEAKAGE

  • LEST STATUS _
1. 2-203-IA 259.0 Did Not Pass 2-203-2A 0.0 Pass  ;
2. 2-203-1B j 2-203-2B i 8.65 SCFH Pass
3. 2-203-IC 2-203-2C On March 14, 1975, MSIV 2-203-2A was determined to have leakage in excess of the Technical Specification limit of 11.5 SCFH. A0 50-265/75-9 will describe the details necessary to correct MSIV 2-203-2A. This report will be submltted at a later date when the work is completed.
  • Combined leakage of the inboard MSIV and its respective outboard MStV.

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March 18, 1975 J. Keppler l l 1

Sincerely.yours, COMMONWEALTH EDISON COMPANY QUAD-CITIES NUCLEAR POWER STATION, b- 'M '

g, N. J. Kallvianakis Station Superintendent ,

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cc: Directorate of Licensing ..

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