ML20126E726
| ML20126E726 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 06/13/1985 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| SBN-822, NUDOCS 8506170197 | |
| Download: ML20126E726 (2) | |
Text
,
c SEABROOK STATION Engin:2 ring Office I
June 13 1985 SBN-82E Put2c Servk:e of h HampeNro T.F. B7.1.3 United States Nuclear Regulatory Commission Washington, DC 20555 Attention:
Mr. George W. Knighton, Chief Licensing Branch No. 3 Division of Licensing
Reference:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444
Subject:
Boron Injection Tank (BIT)
Dear Sir:
The Boron Injection Tank (BIT) is a component of the Safety Injection System (SIS) whose function is to provide concentrated boric acid to the reactor to mitigate the consequences of a postulated steam line break. We have found that operating plants have experienced problems with the heaters required to maintain the boric acid in solution (i.e., within Technical Specification limits.)
\\
Violation of the Technical Specification boron concentration in the BIT poses a potentially serious impact on plant availability.
If the con-centration is not restored within one hour, the plant must be taken to the hot standby condition and borated to the equivalent of 1 percent & K/K at 200*F.
Furthermore, the high boric acid concentration makes recovery from a spurious safety injection signal (which results in injection of the BIT fluid into the Reactor Coolant System) time consuming and costly.
1 Therefore, to enhance plant availability and to realize some cost savings, we intend to delete the BIT from the SIS. This deletion will not have an adverse safety impact since Westinghouse's (W) steam line break analysis, using updated criteria and improved techniques, can be revised without af fecting the accident mitigation capability of the plant.
Westinghouse has provided this revised analysis for several other plants similar to Seabrook and it has been found acceptable by the NRC.
Once Westinghouse has completed this re-analysis, the affected FSAR sections will be revised and included in an amendment to the FSAR.
Very truly yours, d
8506170197 8 Post AWK0 3
J. DeVincentis, Director
$l A
Engineering and Licensing
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i cc Atomic Safety and Licensing Bcard Service List Seabrook Station Construction Field Office
- P.O. Box 700
- Seabrook, NH 03874
., 'o N
William S. Jordan, III Donald E. Chick Diane Curran Town Manager Baraon, Weiss & Jordan Town of Exeter 20001 S. Street, N.W.
10 Front Street Suite 430-Exeter, NH 03833 Washington, D.C.
20009 Brentwood Board of Selectmen Robert C. Perlis RED Dalton Road Office of the Executive Legal Director Brentwood,'NH 03833 U.S. Nuclear Regulatory Commission Washington, DC 20555 Richard E. Sullivan, Mayor City Hall Robert A. Backus, Esquire Newburyport, MA 01950 116 Lowell Street P.O. Box 516.
Calvin A. Canney Manchester, NH 03105 City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney Ceneral Portsmouth, NH 03801 Augusta, ME 04333 Dana Bisbee, Esquire Mr. John B. Tanzer Assistant Attorney General Designated Representative of Office of the Attorney General the Town of Hampton.
208 State House Annex 5 Morningside Drive Concord, NH 03301 Hampton, NH 03842 Anne Verge, Chairperson Roberta C. Pevear Board of Selec tmen Designated Representative of Town Hall the Town of Hampton Falls South Hampton, NH 03827 Drinkwater Road Hampton Falls, NH 03844 Patrick J. McKeon Selectmen's Office Mrs. Sandra Cavutis 10 Central Road
. Designated Representative of Rye, NH 03870 the Town of Kensington RFD 1 Carole F..Kagan, Esquire East Kingston, NH 03827 Atomic Safety and Licensing Board Panel U.S. Nuclear Regulatory Commission Jo Ann Shotwell, Esquire Washington, DC 20555
. Assistant Attorney General Environmental Protection Bureau Mr. Angi Machiros Department of the Attorney General Chairman of the Board of Selectmen One Ashburton Place, 19th Floor Town of Newbury Boston, MA 02108 Newbury, MA 01950 Senator Cordon J. Humphrey Town Manager's Office U.S. Senate Town Hall - Friend Street Washington, DC 20510 Amesbury, MA 01913 (ATTN: Tom Burack)
Senator Gordon J. Humphrey Diana P. Randall 1 Pillsbury Street-
-70. Collins Street Concord, NH 03301 Seabrook,'NH 03874 (ATTN: Herb Boynton) i h
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