ML20084R486

Interim Deficiency Rept Re Inadequate Structural Design of Reinforced Concrete Walls Separating Pump Cells in Category 1 Svc Water & Circulating Water Pumphouse.Mods to Stiffening Slabs in Progress

ML20084R486
Person / Time
Site:	Seabrook
Issue date:	05/03/1984
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SBN-654, NUDOCS 8405220384
Download: ML20084R486 (3)

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IPUBLIC Companyof NewSERVICE Hampshere 1671 Worcester Road Frominoham, Massachusetts 01701 (6171 872 - 8100 May 3, 1984 SBN 654 T.F. Q2.2.2 United States Nuclear Regulatory Cannission Region 1 631 Park Avenue King of Prussia, PA 19406 Attention: Mr. Richard W. Starostecki, Director Division of Project and Resident Programs

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of April 9, 1983, A. L. Legendre (YAEC) to J.

Wiggins (NRC Region I)

(c) PSNH Letter, dated May 16, 1983, " Interim 10CFR50.55(e)

Report; Service and Circulating Water Pumphouse Structural Inadequacy", J. DeVincentis to R. W. Starostecki (d) PSNH Letter, dated July 21,1983, " Interim 10CFR50.55(e)

Report; Service and Circulating Water Pumphouse Structural Inadequacy", J. DeVincentis to R. W. Starostecki (e) PSNH Letter, dated October 13 1983, " Interim 10CFR50.55(e)

Report; Service and Circulating Water Pumphouse Structural Inadequacy", J. DeVincentis to R. W. Starostocki (f) PSNH Letter, dated December 14,1983 " Interim 10CFR50.55(e)

Report; Service and Circulating Water Pumphouse Structural Inadequacy", J. DeVincentis to R. W. Starostecki

Subject:

Interim 10CFR50.55(e) Report; Service and Circulating Water Pumphouse Structural Inadequacy

Dear Sir:

In References (c), (d), (e), and (f), we filed Interim 10CFR50.55(e)

Reports regarding a deficiency in the structural design of the reinforced concrete walls separating pump cells in the Category 1 Service Water and Circulating Water Pumphouse. The following information is being filed pursuant to the Interim Reporting Provision of 10CFR50.55(e)(3).

Reference (f) identified the existence of cracks at the ends of

! stiffening sisbs. These cracks were determined to be caused by the following shrinkage phenomenon:

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1. Normal curing of newly placed concrete.

2. Expansion / contraction due to imbient temperature variations.

l 8405220384 840503 gDRADOCK 05000443 /

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l United States Nuclear Regulatory Commission May 3, 1984

. Attention: Richard W. Starostecki, Director Page 2 Modifications to the stiffening slabs have begun. We will notify your office upon completion of these modifications.

.Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY n " ~'

John DeVincentis Engineering Manager cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement

, U.S. Nuclear Regulatory Commission Washington, DC 20555 4

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. I William S. Jordan, III, Esquire Brentwood Board of Selectmen Harmon & Weiss RED Dalton Road 1725 I Street, N.W. fuite 506 Brentwood, New Hampshire 03833 Washington, DC 20006

! Roy F. Lessy, Jr., Esquire Office of the Executive Legal Director Edward F. Meany U.S. Nuclear Regulatory Commission Designated Representative of Washington, DC 20555 the Town of Rye 155 Washington Road Robert A. Backus, Esquire Rye, NH 03870 116 Lowell Street 1 F.O. Box 516 Calvin A. Canney 1 Mancehster, NH 03105 City Manager City Hall Philip Ahrens Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Department of the Attorney General Augusta ME 04333 Dana Bisbee, Esquire 4

Assistant Attorney General Mr. John B. Tanzer Office of the Attorney General Designated Representative of 208 State House Annex the Town of Hampton Concord, NH 03301 5 Morningside Drive Hampton, NH 03842 Anne Verge, Chairperson Board of Selectmen Roberta C. Pevear Town Hall Designated Representative of South Hampton, NH 03642 4

the Town of Hampton Falls l

Drinkwater Road Patrick J. McKeon

Hampton Falls, NH 03844 Selectmen's Office i 10' Central Road Mrs. Sandra Gavutis Rye, NH 03670

, Designated Representative of j the Town of Kensington Carole F. Kagan, Esq.

4 RFD 1 Atomic safety and Licensing Board Panel East Kingston, NH 03827 U.S. Nuclear Regulatory commission Jo Ann Shotwell, Esquire Assistant Attorney General Mr. Angie Machiros Environmental Protection Bureau Chairman of the Board of Selectmen Department of the Attorney General Town of Newbury One Ashburton Place, 19th Floor Newbury, MA 01950 l Boston, MA 02108 Town Manager's Office Senator Gordon J. Humphrey Town Hall - Friend Street U.S. Senate Amesbury, Ma. 01913 Washington, DC 20510

(Attn Tom Burack) Senator.Gordon J. Humphrey 1 Fillsbury Street Diana F. Randall Concord, NH 03301 j 70 Collins Street (Attn Herb Boynton)

SEabrook, NH 03874

, Richard E. St.111 van, Mayor l Donald E. Chick City Hall l Town Manager Newburyport, MA 01950 Town of Exeter 10 Front Street Exeter, NH 03833 -

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