ML18191A289

WPPSS Nuclear Project No. 2. BWR Mark II Containment Additional Design Information

ML18191A289
Person / Time
Site:	Columbia
Issue date:	05/08/1975
From:	Stein J Washington Public Power Supply System
To:	Butler W Office of Nuclear Reactor Regulation
References
G02-75-132
Download: ML18191A289 (4)

Text

l NRC DI'STRIBUTION FOR PART 50 DOCKET MATERIAL (TEMPORARY FORM)

CONTROL NO:

5294 FILE'ROM:

WPPSS

Richland, Wash.

99352 Sten TO:

Mr. W.R. Butler

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DOCKET NO:

50-397 DESCRIPTION:

Ltr re our 4-17-75 6 4-23-75 ltrs....adv. that info re containment des info will be submitted by the week of'u 2, 1975....

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PLANT NAME:

WPPSS 2

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Washington Public Power Supply System A JOINT OPERATING AGENCY P. O. BOX 968 3000 GEO, WASHINGTON WAY RICHLAND, WASHINGTON 09352 PHONE (509) 946-9681 Docket No. 50-397 May 8, 1975 G02-75-132 0@(@

Dr.

W.

R. Butler, Chief BWR-Projects Branch No. 1-2 0~

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Jap Directorate of Licensing U. S. Nuclear Regulatory Commis ~

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Washington, D.C.

20545

Subject:

WPPSS NUCLEAR PROJECT NO.

BWR MARK II CONTAINMENT ADDITIONAL DESIGN INFORMATION

Reference:

1)

Letter, W.R. Butler to J.J.

Stein, Suppression pool hydrodynamic loads during LOCA, dated April 17, 1975.

2)

Letter, W.R. Butler to J.J.

Stein, Pool dynamic loads due to relief valve operation, dated April 23, 1975.

Dear Dr. Butler:

You have recently transmitted two (2) letters to us requesting additional information relative to the design of Mark II containments to account for suppression pool hydrodynamic loads that occur during loss of coolant accidents (Reference

1) and safety/relief valve discharge events (Reference 2).

A schedule and program for resolution of these matters is being developed in conjunction with other utilities owning Mark II containments and the General Electric Company.

At this time, we are unable to determine whether the infor-mation requested by Reference 2 can be supplied within the specified 90 days.

We will provide you with our schedule for submitting the requested containment design information and evaluation by the week of June 2, 1975.

Very truly yours, JJS:GLG:ke J. J.

STEIN Managing Director

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