ML20083P352

Final Deficiency Rept Re partition-type Nonmasonry Walls Not Designed to Initial Project Seismic Criteria. Initially Reported on 821223.Design of Walls Revised & Walls Will Be Structurally Modified

ML20083P352
Person / Time
Site:	Seabrook
Issue date:	01/26/1983
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO.
To:	Starostecki K, Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
10CFR-050.55E, 10CFR-50.55E, SBM-436, NUDOCS 8302030455
Download: ML20083P352 (3)

Text

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1671 Worcester Road Pubsc Service of New Hampshire Frominoham. Massachuwets 01701 (6171 - 872 - 8100 January 26, 1983 SBN-436 T.F. Q2.2.2 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attention: Mr. Richard W. Starostecki, Director Division of Resident and Project Inspection

References:

(a) Construction Permit CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of December 23, 1982, A. L. Legendre, Jr. (YAEC) to  ;

Eugene Kelley (NRC Region I)

Subject:

Final 10CFR50.55(e) Report; Non-Seismic Control Room Office Partitions

Dear Sir:

On December 23, 1982, a reportable 10CFR50.55(e) item was reported

[ Reference (b)] regarding non-seismic Control Room Office partitions.

The following information is provided per 10CFR50.55(e)(3) and is considered to be the final report on this item.

Description of reficiency The west and south partition-type (non-masonry) walls of the Shif t Supervisor's Office and the west and north partition-type (non-masonry) walls of the Emergency Storage Room in the Control Room at Elevation 75'-0" of the Control Building \were not designed initially to Project seismic criteria.

This deficiency was discovered when an on-site licensee engineer questioned the fire rating capability of those walls. When the responsible engineer reviewed their design, he noted that they were not designed to the Project seismic criteria.

Investigation revealed that the original design of these two particular offices in their original location was not made using seismic design criteria. Subsequent Control Room design developments included upgrading the seismic design of various systems, components, and structures, and the addition of the Technical Support Center in the approximate area where the two subject offices were originally located. When the offices were moved to their present location, the seismic design upgrading did not take place. The non-seismic Category 1 walls defined in the first paragraph are now installed.

8302030455 830126 g PDR ADOCK 05000443 S PDR

.vvv u, n o... r .v. uun ouv. munchester, NH O3105 Telephone (603) 669-4000 TWX 7102207595

l t United States Nuclear Regulatory Commission January 26, 1983 Attention: Richard W. Starostecki Page 2 i

Analysis of Safety Implications Failure of these partition-type (non-masonry) walls under seismic loadings could possibly cause damage and failure of safety-related instrument and control components in the immediate area.

Corrective Action Taken The design of all partition-type (non-masonry) walls in'all seismic Category 1 buildings has been reviewed to assure their proper seismic design, where required. The results of the review showed that all other partition-type (non-masonry) walls in all seismic Category 1 buildings had been seismically designed, where required. The design of the subject walls has been revised and the walls will be structurally modified to assure that specified seismic loads will not cause them to fail in such a way as to jeopardize the operability of any safety-related components in the Control Room. The structural revisions to these walls will be accomplished to meet the Project schedule.

Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY f0A< .

J. DeV ncentis

• fI Project Manager ALL/fsf cc: Director Office of Inspection and Enforcement Washington, DC 20555 Atomic Safety and Licensing Board Service List 9

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I ASLB SERVICE LIST Philip Ahrens, Esquire

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Assistant Attorney General Department of the Attorney General Augusta, ME 04333 Representative Beverly Hollingworth Coastal Chamber of Commerce 209 Winnacunnet Road Hampton, NH 03842 William S. Jordan, III, Esquire Harmon & Weiss 1725 I Street, N.W.

Suite 506 Washington, DC 20006 E. Tupper Kinder, Esquire Assistant Attorney General Office of the Attorney General 208 State House Annex Concord, NH 03301 Robert A. Backus, Esquire 116 Lowell Street P.O. Box 516 Manchester, NH 03105 Edward J. McDermott, Esquire Sanders and McDermott Professional Association 408 Lafayette Road Hampton, NH 03842 t

Jo Ann Shotwell, Esquire Assistant Attorney General Environmental Protection Bureau Department of the Attorney General One Ashburton Place, 19th Floor Boston, MA 02108

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