ML19210C093

LER 79-090/03L-0:on 791001,condensate Storage Suction Valve 23-MOV-17 Was Disabled.Caused by Relocation of Cable During Hanger Mods in HPCI Sys

ML19210C093
Person / Time
Site:	FitzPatrick
Issue date:	11/07/1979
From:	W. Verne Childs POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19210C092	List: ML19210C091 ML19210C093
References
LER-79-090-03L, LER-79-90-3L, NUDOCS 7911130246
Download: ML19210C093 (2)

Text

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NAME OF PREPARER W. Verne ChiIds __ psons: (315) 342-3840 2

POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET N0. 50-333 ATTACHMENT TO LER 79-090/03L-0 Page 1 of 1 During normal operation as a result of hanger modifications being performed under the Pipe Stress Reanalysis Program, a cable associated with the HPCI system condensate storage tank suction valve (23-M0V-17) required relocation. This cable relocation disabled the referenced valve.

Prior to the actual cable relocacion 23-M0V-17 was verified in its open position and a temporary procedure was written instructing operations personnel to manually close the valve in the unlikely event the HPCI system should be required to operate and condensate storage tank level decreased to its minimum or the torus water level increased to 5" above normal.

Either 01~ ti m conditions (low storage tank level or high torus level) would orcinarily cause an automatic shifting of the HPCI suction from the condensate storage tanks to the torus. In addition to providing a written procedure to accomplish this tranfer by manual action, an operator was assigned to this task with no concurrent duties. It should further be noted that the HPCI system suction transfer would only be required following operation at rated flow conditions for approximately 50 minutes. This time period would be more than adequate to allow manual transfer. While opera-tion under the conditions stated above is considered to be a degraded mode in accordance with Technical Specifications, Appendix A, Paragraph 3.5.C.

the HPCI system was continuously available to perform its intended safet.v function. Therefore, the event did not represent a significant hazard ta the public health and safety.

Following rerouting of the cable, 23-MOV-17 was verified fully operable approximately 50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br /> later, and returned to service.

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