ML19257A718

From kanterella
Jump to navigation Jump to search
Forwards LER 79-027/03L-0
ML19257A718
Person / Time
Site: Quad Cities Constellation icon.png
Issue date: 12/24/1979
From: Kalivianakis N
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19257A719 List:
References
NJK-79-469, NUDOCS 8001070458
Download: ML19257A718 (2)


Text

. - .

BS6 NJK-79-469 December 24, 1979 J. Keppler, Regional Director Office of Inspection and Enforcement Region iII U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Reference:

Quad-Cities Nuclear Power Station Docket No. 50-265, DPR-30, Unit 2 Appendix A, Sections 4.7.A.2.i. and 6.6.B.2.

Enclosed please find Reporteble Occurrence Report No. R0 79-27/03L for Quad-Cities Nuclear Power Station.

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

This report identifies six occurrences whereby excessive leakages were measured with respect to primary containment isolation valves during local leak rate testing. The following represents a tabular summary of the leak rate test failures covered in this report.

Main Steam Isolation Valves A0 2-203-1A 30.0 SCFH A0 2-203-2A 47.2 SCFH A0 2-203-1B 32 3 SCFH A0 2-203-2B 24.2SCFH Main Steam Drain Line M0 2-220-2 26.0 SC:H RCIC Steam Supply M0 2-1301-16 76.7 SCFH Feedwater Check Valve 2-220-62B 405.8 SCFH Drywell Suppre sion Chamber 2-1601-21 (Combined leakage Purge Valves 2-1601-22 for volume) 2-1601-55 136.1 SCFH 2-1601-56 Orywell-Suppression Chamoer 2-1601-23 (Combined leakage Vent Valves 2-1601-24 for volume) 2-1601-60 27.0 SCFH 2-1601-61 2-1601-62

-'6o'-63 I

DE C 2 31979 1693 284 b(I 8001070 [ ,

a

All valves 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 volves have been completed.

Very truly yours, COMMONWELATH EDIS0N COMPANY QUAD-CITIES NUCLEAR POWER STATION

// ff

// k$AH4 N. J . Kal ivianaki s Station Superintendent NJK/JCV/ san ec: R. F. Janecek 1693 285