ML18191A273

WPPSS Nuclear Project No. 2. Mark II Containment - Design Deficiency

ML18191A273
Person / Time
Site:	Columbia
Issue date:	02/06/1976
From:	Renberger D Washington Public Power Supply System
To:	Butler W Office of Nuclear Reactor Regulation
References
G02-76-40
Download: ML18191A273 (6)

Text

NRC FORM 195

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Richland, Wash D L Renber er DATE OF DOCUMENT 2-6-76 DATE RECEIVED 2910-76

+LETTER lORIGINAL Qcopv CINOTO R IZ E D I/UNCLASSIFIED PROP INPUT FORM NUMBER OF COPIES RECEIVED one signed DESCRIPTION Ltr re their 11-10-75 ltr.........advising that info concerning Mark II containment will be delayed until 3-15-76......

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gton Public Power Supply System A JOINT OPERATING AGENCY Docket No. 50-397 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Hashington, D.C.

20555 Februarv 6,

1976 G02-76-40

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60IAIAIyEH 1Asd1 9sdIOS JP Attention:

Dr. Halter R. Butler, Chief Light Hater Reactors Project Branch 1-2

Subject:

HPPSS NUCLEAR PROJECT NO.

2 MARK II CONTAINMENT - DESIGN EVALUATION REPORT

Reference:

1)

Letter, H.R. Butler to J. J. Stein, Suppression Pool Hydrodynamic Loads During LOCA, April 17, 1975.

2)

Letter, H.R. Butler to J.J.

Stein,

(

Pool Dynamic Loads Due to Relief Valve Operation, April 23, 1975.

3)

Letter, N.O. Strand to O.D. Parr, Mark II Containment

Program, November 10, 1975 (G02-75-310)

Dear Dr. Butler:

This letter is to inform you of a delay in the schedule for the completion of the plant-unique design evaluation report previously given to you in Reference 3.

Because of the extensive analytical effort required to com-plete the structural evaluation and to determine the design

adequacy, we project the assessment cannot be completed and submitted to you until March 15, 1976.

This design evaluation report, which we will submit to you on March 15, will include our conclusion regarding the adequacy of design for the HPPSS Nuclear Project No.

2 containment.

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3r. lJalter R. Butler Page 2

February 6, 1976 802-76-40 If you have any questions on this matter, please do not hesitate to contact us.

Very truly yours, DLR:GLG:cab D. L.

RENBERGER Asst. Director Generation and Technology cc:

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GE JJ Byrnes -

BSR JJ Verderber - B8R D

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