ML20206B729
| ML20206B729 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 05/28/1986 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| REF-PT21-86, REF-PT21-86-229-000 (CDR-85--17), (CDR-85-00-17), PT21-86-229, PT21-86-229-000, SBN-1070, NUDOCS 8606190177 | |
| Download: ML20206B729 (3) | |
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,DESIGNA ORIGIN
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Certified 3r
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y SEABROOK STATION Engineering Office:
1671 Worcester Road 01701 M$9MCGOfb 6 pmgsachusetts ay 8, M 86 New Hampshire Yankee Division SBN-1070 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) PSNH Letter SBN-894, dated November 18, 1985 " Interim 10CFR50.55(e) Report: Could-Supplied Motor Control Starters," J. DeVincentis to R. W. Starostecki (c) PSNH Letter SBN-933, dated January 24, 1986, " Interim 10CFR50.55(e) Report: Gould-Supplied Motor, Control Starters," J. DeVincentis to R. W. Starostecki (d) PSNH Letter SBN-981, dated March 31, 1986, " Interim 10CFR50.55(e) Report: Gould-Supplied Motor Control Starters," J. Devincentis to R. W. Starostecki
Subject:
Final 10CFR50.55(e) Report: Gould-Supplied Motor Control Starters (CDR 85-00-17)
Dear Sir:
l In References (b), (c), and (d), we reported a 10CFR50.55(e) deficiency regarding motor control starters supplied by Gould, Inc., (now Telemecanique).
i Description of Deficiency This deficiency involved the potential for the motor control starters, unitized type NEMA Size 1 and 2, to experience binding or seizure of the contact carrier assembly if the space between the contact carrier post and support housing is less than 0.010 inch.
As stated in Reference (b), a similar deficiency was identified in 1982 and determined to be reportable per 10CFR50.55(e). The corrective action l
taken at that time involved the inspection and modification of starters that had been identified by the manufacturer as p::ssibly having the subject deficiency.
We have completed a 100% reinspection of the subject starters which are l
utilized in Class 1E applications. Our reinspection has identified six Class lE starters with the subject deficiency.
P.O. Box 300. Seabrook. NH O3874 Telephone (603) 474-9521 l
8606190177 860528 A
i l
PDR ADCCK 05000443 L
S PDR
3 United States Nuclear Regulatory Commission May 28, 1986 Attention:
Mr. Richard W. Starostecki Page 2 Safety Implications Failure of a motor starter would prevent the associated safety-related motor from p.cforming its intended safety function.
Corrective Action The manufacturer was notified of the results of our inspection.
Subsequently, the manufacturer issued a revised 10CFR21 notification.
Previous corrective action specified by the vendor was to ensure the 0.010 inch clearance between the contact carrier post and support housing. The revised notification stresses that all subject starters be inspected to ensure i
that washers are installed under the contact carrier cover, in addition to verification of adequate clearance. The manufacturer's explanation for the recurrence of this problem is that previous corrective action did not emphasize the importance of washers installed under the contact carrier cover. Without these washers, the cover screws can be overtightened and cause binding of the contact carrier assembly.
The corrective action for this deficiency involved a 100% reinspection of the subject starters which are utilized in safety-related applications to ensure that washers are installed under the contact carrier cover and that adequate clearance exists between the contact carrier post and support housing.
T'ne corrective action, as specified, has been completed. This is considered our final report on this item.
Very truly yours, tn John DeVincentis Director of Engineering cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 L
Dicn3 Curran, Esquire C01 vin A. Canntg Hanson & Weiss City Manager 2001 S. Street, N.W.
City Hall Suite 430 126 Daniel Stredt Portsmouth, NH 03801 Washington, D.C.
20009 Sherwin E. Turk. Esq.
Stephen E. Merrill, Esquire Office of the Executive L* gal Director Attorney General U.S. Nuclear Regulatory Cossalssion George Dana Bisbee, Esquire Tenth Floor Assistant Attorney General l
I Washington, DC 20555 Office of the Attorney General 25 Capitol Street Robert A. Backus. Esquire Concord, MN 03301-4397 l
116 Lowell Street l
F.0. Box 516 Mr. J. F. Nadeau Manchester, NH 03105 Selectmen's office l
10 Cencral Road Philip Ahrens Esquire Rye, NH 03870 i
Assistant Attorney General Department of The Attorney General Mr. Angie Machiros Statehouse Station M Chairman of the Board of Selectmen hugusta, ME 04333 Town of Newtury Newbury, MA 01950 Mrs. Sandra Cavutis Chairman, Board of Selectmen Mr. Willian 3. Lord RFD 1 - Box 1154 Board of Selectmen Kennsington, NH 03827 Town Hall - Friend Street Amesbury, MA 01913 Carol S. Sneider. Esquire Assistant Attorney General Senator Gordon J. Humphrey Department of the Attorney General 1 Pillsbury Street One Ashburton Place 19th Floor Concord, EH 03301 Boston, MA 02108 (ATTN: Herb Boynton)
P Senator Gordon J. Humphrey H. Joseph Flynn Esquire U.S. Senate Office of General Counsel Washington, DC 20510 Federal Emergency Management Agencyg l
(ATTN: Tom Burack) 500 C Street, SW Vezthington, DC 20472 Richard A. Hampe, Esq.
Hampe and McNicholas V.11 McEachern, Esquire l
35 Pleasant Street s tthew T. Brock, Esquire Concord, NH 03301 Latines & McEachern 25 Maplewood Avenus Donald E. Chick P.O. Box 360 j
Town Manager Portsmouth, NH 03801 Town of Exeter 10 Front Street Cary W. Holmes, Esq.
Exeter, NH 03833 Holmes & Ells 47 Winnacunnet Road Brentwood Board of Selectmen Hampton, NH 03841 RFD Dalton Road Brentwood, NH 03833 Mr. Ed Thomas FEMA Region I Peter J. Mathews, Mayor 442 John W. McCornack PO & Courthouse City Hall Bosto'n, MA 02109 Newburyport, MA 01950 Stanley W. Knowles, Chairman i
Board of Selectmen I
P.O. Box 710 North Hampton, NH 03862