ML20127G651

Board Notification 85-063:provides Info Re Tdi Diesel Air Start Check Valve Cracks at Facility.Encl R Starostecki 850419 Memo to Hl Thompson Describes Problems W/Cracks in & Failures of Certain Check Valves

ML20127G651
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	06/18/1985
From:	Thompson H Office of Nuclear Reactor Regulation
To:	Asselstine, Palladino, Roberts NRC COMMISSION (OCM)
Shared Package
ML20127G654	List: ML20127G651 ML20128C201
References
CON-#385-494, TASK-AS, TASK-BN85-063, TASK-BN85-63 BN-85-063, BN-85-63, OL, NUDOCS 8506260018
Download: ML20127G651 (2)

Text

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'# o UNITED STATES g

8 o NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20656

{ $

\ **"* / JUN 181985 Docket No. 50-322' _,

MEMORANDUM FOR: Chairman Palladino Commissioner Roberts Commissioner Asselstine Commissioner Bernthal Commissioner Zech FROM: Hugh L. Thompson, Jr., Director -

Division of Licensing

SUBJECT:

BOARD NOTIFICATION 85-063 TDI DIESEL AIR START CHECK VALVE CRACKS AT SHOREHAM

.In.accordance with.the procedures for Board Notification,'the following information is being provided direct 1y to' the Commission'. The approlriate i

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boards and parties, for all facilities with TDI diesel generators, are being informed by a copy of this memorandum. This information is relevant to all facilities that have diesel generators manufactured by TDI, including Shoreham, which is currently before the Commission.

Enclosure 1 is a memo from Richard Starostecki of Region I to the Director, Division of Licensing which describes problems with cracks in, and failures of, certain check valves used in TDI diesel generators. As noted in the Enclosure, problems were first identified at Grand Gulf, and then subsequently at Shoreham.

Although these check valves may be used in all TDI engines, problems have only been identified in valves associated with air start systems, and only the TDI engines at Shoreham, Catawba, Midland, San Onofre, Rancho Seco, and River Bend have these particular check valves installed in their air start systems. All engines may have Williams-Gauge check valves installed in their lube oil and/or jacket cooling water systems.

Replacement check valves manufactured by a different vendor as recommended by TDI have either been ordered or are on hand at all sites where the valves are e

Contact:

R. Caruso X28392 P

8506260018 L _________

t installed in air start systems. The staff believes that the problems with these valves are due to a combination of high cycle and low cycle fatigue. Because the valves in the lube oil and jacket water systems operate in a medium with a much higher viscosity, and because they are not subjected to the rapid cycling motion

• of the air start check valves, we do not believe that there is an immediate problem in those systems.

k e

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f Hugh L. Ikompson, Jr. , Director EY Division of Licensing

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Enclosure:

Memo from Richard Starostecki (P.egien I) to Hugh L. Thompson (DL) dated 4/19/85 cc: SECY (2)

OPE OGC EDO Parties to the Proceeding ACRS (10)

See next page ASLBs for: Midland Shoreham Shearon Harris Comanche Peak l Perry l Vogtle WNP-1 ASLABs for: Shoreham Catawba I

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