05000333/LER-1979-103-01, /01T-0:on 791205,due to IE Bulletin 79-14 Reanalysis,Pipe Hanger H10-539 in B RHR Sys Considered Inoperable Due to Thermal Growth.Caused by Hold Down Clips & Guides Restraining Pipe Movement.Clips & Guides Removed

/01T-0:on 791205,due to IE Bulletin 79-14 Reanalysis,Pipe Hanger H10-539 in B RHR Sys Considered Inoperable Due to Thermal Growth.Caused by Hold Down Clips & Guides Restraining Pipe Movement.Clips & Guides Removed

ML19211A930
Person / Time
Site:	FitzPatrick
Issue date:	12/17/1979
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
ML19211A925	List: 05000333/LER-1979-103, Forwards LER 79-103/01T-0 05000333/LER-1979-103-01, /01T-0:on 791205,due to IE Bulletin 79-14 Reanalysis,Pipe Hanger H10-539 in B RHR Sys Considered Inoperable Due to Thermal Growth.Caused by Hold Down Clips & Guides Restraining Pipe Movement.Clips & Guides Removed
References
LER-79-103-01T, LER-79-103-1T, NUDOCS 7912210336
Download: ML19211A930 (2)

LER-1979-103, /01T-0:on 791205,due to IE Bulletin 79-14 Reanalysis,Pipe Hanger H10-539 in B RHR Sys Considered Inoperable Due to Thermal Growth.Caused by Hold Down Clips & Guides Restraining Pipe Movement.Clips & Guides Removed

Event date:
Report date:
3331979103R01 - NRC Website

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POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET NO. 50-333 ATTACHMENT TO LER 79-103/01T-0 Page 1 of 1

The Architect Engineer informed the plant staf f that as a result of ISE Bulletin 79-14 reanalysis, pipe hanger H10-539 in the

'B' RHR System was con-sidered inoperable due to thermal growth. Hanger H10-539 is associated with the RHR System steam condensing mode non-condensible gas vent line between the RHR heat exchanger and the torus. The steam condensing mode of the system was declared inoperable and tagged to prevent its use until the subject hanger could be modified. The refo re, the event did not represent any significant hazard to the public health and safety.

Modification of the hanger by removing hold-down clips and guides which restrained movement of the pipe, returned the hanger to a fully operable status on the following day.

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