ML20206F074
| ML20206F074 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 06/06/1986 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| (CDR-86--3, (CDR-86--3), (CDR-86-00-03), SBN-1095, NUDOCS 8606240122 | |
| Download: ML20206F074 (4) | |
Text
0 SEABROOK STATION Engineering Office June 6, 1986 g
NEW HAMPSHIRE YANKEE DIVISION SBN-1095 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 No.s 50-443 and 50-444 (b) Westinghouse Letter, NS-NRC-86-3108, dated February 27, 1986, E. P. Rahe (W) to J. M.
Taylor (NRC)
(c) Telecon of March 24, 1986, W. H. Reed (YAEC) and P. Christofakis (YAEC) to K. Gibson (Region I)
(d) PSNH Letter (SBN-1037), dated May 7,1986,
" Interim 10CFR50.55(e) Report:
Potential Mal-function of P-10 Permissive", J. DeVincentis to R. W. Starostecki Subj ect :
Final 10CFR50.55(e) Report:
Potential Malfunction of P-10 Permissive (CDR 86-00-03)
Dear Sir:
In Reference (c), we reported a 10CFR50.55(e) deficiency regarding possible malfunction of the P-10 Permissive. As discussed in Reference (d), under certain circumstances and assumptions, it is possible that the P-10 permissive would not reset itself automatically when the power level is reduced below the P-10 setpoint.
As a consequence, this would prevent the reactor from tripping when necessary.
8606240122 860606 DR ADOCK 0500 3
Seabrook Station Construction Field Office P.O. Box 700. Seabrook, NH O3874 - I# A7 a
an,
l United States Nuclear Regulatory Commission Attention:
Mr. Richard W. Starostecki Page 2 The Westinghouse recommended corrective actions [ Reference (b incorporated into the SeabrooK Station's Plant Abnormal Operating Procedures are as follows: a) When reducing power to below the P-10 setpoint, verification that the P-10 permissive properly changes state will be made by obser-vation of the existing control room bistable status lights, per-missive status lights, and associated alarms. These actions will be taken should a power range channel or portion thereof, affect-ing P-10, become inoperable. b) Reasonable attempts will be made to regain source range instru-mentation if source range (s) are inoperable. i As such, this is considered our final report on this item. Very truly yo rs, 4 John DeVincentis Director of Engineering cc: Atomic Safety and Licensing Board Service Lis t Director, Of fice of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, DC 20555 l I
eg Dicno Curran, Esquire Calvin A. Cann:g Harmon & Weiss City N:nes".r 2001 S. Street, W.W. City Hall suite 430 126 Daniel Street Washington, D.C. 20009 Portsmouth, EN 03401 Sherwin E. Turk. Esq. Stephen E. Morelli, Esquire
- Office of the Executive Legal Director Attorney Ceneral I
N.S. Nuclear Regulatory Commission George Dana Bisbee, Esquire Tenth Floor Assistant Attorney General Washington, DC 20555 office of the Attorney General i 25 Capitol Street Robert A. Backus. Sequire Concord, M 03301-6397 114 Lowell Street P.O. Box 516 Mr. J. P. Nedeau Manchester, IDI 03105 Selectmen's Office 1 10 Central Road Philly Ahrens. Esquire Rye, NH 03870 Assistant Attorney General Department of The Attorney General Mr. Angie Nachiros Statehouse Station #6 Chairfan of the Board of Selectmen hugusta NE 04333 Town of Newbury Newbury, MA 01950 Nrs. Sandra Cavutis Chairman, toard of Selectmen Nr. William 8. Lett AFD 1 - Box 1154 Board of Selectmen i Kannoington, NN 03827 Town Mall - Friend Street Amesbury, MA 01913 l Carol S. Pa+1 der Esquire Assistant Attorney Geners! Senator Gordon J. Numphrey Department of the Attorney General 1 Pillsbury Street One Ashburton Place, 19th Floor Concord, NN 03301 j Boston, MA 02104 (ATTN: Norb Boynton) Senator Gordon J. Numphrey N. Joseph Flynn, Esquire U.S. Senate Office of General Counsel Washington, DC 20510 Federal Emergency Management Agencyg (ATTN: Toe Durack) 500 C Street, SW Washington, DC 20472 Elchard A. Maape. Esq. Nampe and McElcholas Paul McEachern, Esquire 35 Pleasant Street Matthew T. Brock, Ssquire Concord, NN 03301 Shaines & NcBachern 25 Naplewood Avenue Donald B. Chick P.O. Box 360 Town Manager Portsmouth, NN 03801 Town of Exeter l 10 Front Street Cary W. Holmes, Esq. Exeter, W 03833 Nolmes & Ells j 47 Winnacunnet Road Brentwood Soard of Selectmen Naapton, NN 03841 RFD Dalton Road j Brentwood, BN 03833 Nr. Ed Thomas FEMA Region I l Peter J. Mathews, Nayor 442 John W. McCormack PO 4 Courthouse City Hall Boston, MA 02109 Newburyport, MA 01950 Stanley W. Knowles, Chairman Board of Selectmen P.O. Box 710 North Hampton, NH 03862 .}}