ML19270F656

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Forwards LER 79-003/03L-0
ML19270F656
Person / Time
Site: Quad Cities Constellation icon.png
Issue date: 02/16/1979
From: Kalivianakis N
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17296A304 List:
References
NJK-79-73, NUDOCS 7903070332
Download: ML19270F656 (2)


Text

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, Commonwealth Edison Quad Cities Nuclear Power Station 22710 206 Avenue North Cordova, Illinois 61242 Telephone 309/654-2241 NJ K-79-73 February 16, 1979 J. Keppler, Regional Director Of fice of Inspection and Enforcement Region iII U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 Re fe rence: Quad-Cities Nuclear Power Station Docket No. 50-254. DPR-29, Unit 1 Appendix A, Sections 4.7.A.2.i. and 6.6.B.2.

Enclosed please find Reportable Occurrence Report No. R0 79-03/03L for Quad-Cities Nuclear Power Station.

This report is submitted to you in accordance with the requirements of Technical Specification 6.6.B.2.b, as conditions leading to operation in a degraded mode permitted by a limiting condition for operation.

This report identifies nine occurrences whereby excessive leakages were measured with respect to primary containment 1 solation valves and double gasketed seals during local leak rate testing. The following represents a tabular sumary of the Icak rate test failures covered in this report.

VALVE MEASURED CORRECTED SYSTEM TESTED LEAK RATE LEAK RATE Main Steam isolation Valves A0 1-203-1A 174.9 SCFH ------

A0 1-203-2A 115.7 SCFH ------

A0 1-203-18 285.3 SCFH ------

A0 1-203-2B 130.7 SCFH ------

A0 1-203-1C 631.2 SCFH ------

A0 1-203-2C 81.5 SCFH ------

A0 1-203-ID 104.0 SCFH 10.0 SCFH Main Steam Line Drain MO 1-220-1 43.84 SCFH 10.5 SCFH Feedwater Check Valves CV 1-220-62B 2558 SCFH 4.4 SCFH RCIC Turbine Exhaust CV 1-1301-41 396.3 SCFH 0.0 SCFH Suppression Chamber Purge A0 1-1601-55 58.3 SCFH 14.45 SCFH i

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'2 7903070332_. EB 2 01979 (\

.. s VALVE MEASURED CORRECTED SYSTEM TESTED LEAK RATE LEAK RATE Suppression Chamber Vent Line No. 2 CV 1-1601-31B 147.7 SCFH 0.67 SCFH Drywell Floor Drain Sump Discharge A0 1-2001-4 26.0 SCFH 1.85 SCFH HPCI Steam Exhaust CV 2301-45 190.3 SCFH 0.0 SCFH Drywell Head Flange > 30 SCFH ------

Those valves which have not been repaired to date will be repaired and local leak rate tested prior to unit start-up. A supplemental report will be sent upon completion of all testing and when all corrective actions regarding the above valves have been completed.

Very truly yours, COMMONWEALTH EDISON COMPANY QUAD-Cl i N CLEAR POWER STATION

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N . J . Ka l l v .ianakis Station Superintendent NJK/JCV/cb cc: R.F. Janecek