ML20086K371

Telecopy AO 75-16:on 750212,excessive Leakage Found on HPCI Turbine Exhaust Check Valve 23-65.Cause Under Investigation. Valve Will Be Inspected & Maintained as Required to Achieve Acceptable Leakage Rate

ML20086K371
Person / Time
Site:	Peach Bottom
Issue date:	02/13/1975
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086K355	List: ML20086K352 ML20086K371
References
AO-75-16, NUDOCS 8401270049
Download: ML20086K371 (1)

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1. • 40 CCc.%*/4, mu:n PilILADELPHIA ELT.CTRIC COMPANY Peach Bottom istomic Power Station Delta Pennsylvania 17314 February 13, 1975

_r. James P. O'Reilly, Director

.ifice of Inspection and Enforcement 3rgion 1

.:1ced States Nuclear Regulatory Commission

31 Park Avenue c.cg of Prussia, Pennsylvania 19406 _

Fubject: Abnormal Occurrence 24-Hour Notification 2:sfirming W. T. U11 rich's phone conversation with Mr. Walt Baunack, Region 1, Taited States Nuclear Regulatory Concission on Pcbruary 13, 1975.

ieference: License Number DPR-44 Technical Specification

Reference:

4.7.A.2.f tapert No. : 50-277-75-16

.J_4 port Date: February 13, 1975 O currence Date: February 12, 1975 Ta:ility: Peach Bottom AtomLc Power Station R.D. 1, Delta, Pennsylvania 17314

!dentification of Occurrence:

Exces sive.1. nk a ce..o L IIf.CI.Iurb.ine. E;:haus t_Chn.ck _Yalve_ (- 23-65) .

!caditions Prior to Occurrence:

Unit 2 shutdown for piping inspection.

escription of Occurrence:

During a routine local leak rate test, the HPCI Turbine Exhaust Check Valve, was found to leak in excess of 2000 cc/ min.

esignation of Apparent Cause of Occurrence: failure to close tightly is being investigated.

The cause of the check valve's 1

A.=417 sis of Occurrence:

The safety icip11 cations of thin occurrence uro ninical since the inner turbine exhaust isolation stop check valve ( 23-12) closed and sealed satisfactorily.

2 rrective Action:

The valve wiLL be inspected and maintained as required to achieve an acceptable leakage rate.

Isilure Data None.

Ve ry truly yours.

/ .,,4 NW .'. .

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