ML20100D805

Final Deficiency Rept Re Cracked Capstan Springs in Pacific Scientific Mechanical Shock Arrestors.Suspect Springs Replaced in 48 Model PSA-1 or PSA-3 Shock Arrestors.All 48 Arrestors Performance Checked After Springs Replaced

ML20100D805
Person / Time
Site:	Seabrook
Issue date:	02/25/1985
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SBN-770, NUDOCS 8504030145
Download: ML20100D805 (4)

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• SEABROOK STATION Engineering Office February 25, 1985 Pubec Service of New Hampshire SBN- 770 Now Hampshire Yonkee Division 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 Project and Resident Programs

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of October 24, 1983, A. L. Legendre (YAEC) to Harry Kister (NRC Region I)

(c) PSNH Letter SBN-583, dated November 23, 1983, " Interim 10CFR50.55(e) Report ; Pacific Scientific Mechanical Shock Arrester Capstan Spring", J. DeVincentis to R. W.

S ta ros tecki (d) PSNH Letter SBN-615, dated January 13, 1984, " Interim 10CFR50.55(e) Report; Pacific Scientific Mechanical Shock Arrester Capstan Spring", J. DeVincentis to R. W.

S taros tec ki (e) PSNH Letter SBN-629, dated February 28, 1984, " Interim 10CFR50.55(c) Report; Pacific Scientific Mechanical Shock Arrester Capstan Spring", J. DeVincentis to R. W. Starostecki (f) PSNH Letter SBN-662, dated June 1, 1984, " Interim 10CFR50.55(e) Report; Pacific Scientific Mechanical Shock Arrester Capstan Spring", J. DeVincentis to R. W.

Starostecki (g) PSNH Letter SBN-699, dated July 31, 1984, " Interim 10CFR50.55(e) Report; Pacific Scientific Mechanical Shock Arrester Capstan Spring", J. DeVincentis to R. W.

Starostecki

Subject:

Final 10CFR50.55(e) Report; Pacific Scientific Mechanical Shock Arrester Capstan Spring

Dear Sir:

We filed, in Reference (g), an Interim 10CFR50.55(e) Report regarding cracked capstan springs in Pacific Scientific mechanical shock arresters. In that report we indicated that this item was reportable under 10CFR50.55(e),

and we informed you of our corrective action plan to resolve this deficiency.

This report serves to notify you that the corrective actions stated in Reference (g) have been completed. The suspect capstan springs have been P.O. Box 300 . Seabrook. NH 03874 . Totephone (603) 474 9521 8504030145 850225 l PDR ADOCK 05000443 S ppg / g lg Sf

United States Nuclear Regulatory Commission Attention: Mr. Richard W. Starostecki Page 2 replaced with new, properly-manufactured springs in all forty-eight shock arresters that are either the PSA-1 or PSA-3 model types. The tangs of the new springs were formed prior to age hardening, thereby preventing hydrogen

! cracking occurring during plating of the springs. The new springs do not i exhibit any micro cracks. All forty-eight shock arresters were performance tested af ter being replaced with new springs.

This letter is considered to be the final report on this item.

Very truly ours, A.

J. DeVincentis, Director Engineering and Licensing cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 l

.jj$ .

William S. Jordan, III Diano Curran -

Harmon, Weiss & Jordan 20001 S Street N.W. Brentwood Board of Selectmen

. Suite 430 RED Dalton Road Brentwood, New Hampshire 03833 Washington, D.C. 20009 Robert G. Perlis

• Office of the Executive Legal Director Edward F. Meany U.S. Nuclear Regulatory Commission Designated Representativg of Washington, DC 20555 the Town of Rye 155 Washington Road Robert A. Backus. Esquire Rye, NH 03870 116 Lowell Street F.O. Box 516 Calvin A. Canney 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 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 the Town of Hampton Falls Drinkwater Road Patrick J. McKeon Hampton Falls, NH 03844 Selectmen's Office 10 Central Road Mrs. Sandra Gavutis Rye, NH 03670 Designated Representative of the Town of Kensington Carole F. Kagan, Esq.

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 Boston, MA 02108 Town Manager's Of fice Senator Gordon J. Humphrey Town Hall - Friend Street U.S. Senate Amesbury, Ma, 01913 Washington, DC 20510 (Attne Tom Burack) Senator Gordon J. Humphrey 1 Pillsbury Street Diana P. Randall Concord, NH 03301 70 Collins Street (Attn: Herb Boynton)

SEabrook, NH 03874 Richard E. Sullivan, Mayor Donald E. Chick City Hall Town Manager Newburyport, MA 01950 Town of Exeter 10 Front Street Exeter, NH 03833 i

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