05000334/LER-1980-056-01, /01P-0:on 800811,discovered That Significant Overstress Condition on High Head Safety Injection Lines to Respective Hot Lines Could Occur During Seismic Event.Caused by Inadequately Sized U Bolts & Undersized Weld Supports

/01P-0:on 800811,discovered That Significant Overstress Condition on High Head Safety Injection Lines to Respective Hot Lines Could Occur During Seismic Event.Caused by Inadequately Sized U Bolts & Undersized Weld Supports

ML19338C675
Person / Time
Site:	Beaver Valley
Issue date:	08/12/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19338C673	List: 05000334/LER-1980-053-01, /01P-0:on 800811,significant Overstress Condition on Charging Lines Found Possible During Seismic Event.Caused by Inadequately Sized U Bolts.Bolts Will Be Replaced with 3-inch Pipe Clamp.Support Will Be Modified 05000334/LER-1980-054-01, /01P-0:on 800811,significant Overstress Condition Found Possible on Safety Injection Line from High Head Safety Injection Pumps to Reactor Coolant Sys Hot Legs, During Seismic Event.Caused by Inadequate Weld 05000334/LER-1980-055-01, /01P-0:on 800811,all Three Reactor Coolant Loop RTD Manifolds Determined to Be Overstressed During Seismic Event at Respective 2-inch to 3-inch Reducers.Cause Unknown. Each Line Will Be Reinforced by Anchors 05000334/LER-1980-056-01, /01P-0:on 800811,discovered That Significant Overstress Condition on High Head Safety Injection Lines to Respective Hot Lines Could Occur During Seismic Event.Caused by Inadequately Sized U Bolts & Undersized Weld Supports ML19338C672
References
LER-80-056-01P, LER-80-56-1P, NUDOCS 8008180407
Download: ML19338C675 (1)

LER-1980-056, /01P-0:on 800811,discovered That Significant Overstress Condition on High Head Safety Injection Lines to Respective Hot Lines Could Occur During Seismic Event.Caused by Inadequately Sized U Bolts & Undersized Weld Supports

Event date:
Report date:
3341980056R01 - NRC Website

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lit has been determined that a signifiennt overstress condition would exist nn the i

t High liend Safety In.1cetion (IlliSI) lines to their respective hot legs during a 1 nei ttente event.

This could renuit in inahility to rerovide hot ler. iniection 14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br /> I af ter start of safety inleetien.

Cold leg In_icetion would ressato in service t g I therefore, no dancer is posed to the health and safcev of the public.

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{ [ttupport on e ch of the three injection Jines each has an undersised weld.

The icopports wil; be reinforced prior to smit startup.

A ff_aal report will be subesitted g g upor, complet:.on of this study.

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