ML20153G262
| ML20153G262 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 02/24/1986 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Noonan V Office of Nuclear Reactor Regulation |
| References | |
| SBN-949, NUDOCS 8602280180 | |
| Download: ML20153G262 (3) | |
Text
SEABROOK STATION Engineering Office i
Pub 5c Service of New Hampshke Now Hampshire Yonkee Division February 24, 1986 SBN-949 T.F. J.4.2.99 H.8.1.1 B.7.1.2 United States Nuclear Regulatory Cormission Washington, DC 20555 Attention:
Mr. Vincent S. Noonan, Project Director PWR Project Directorate No. 5
References:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) PSNH Letter SL'7-447, dated February 1,1983, "Open Item Responses," J. DeVincentis to G. W. Knighton
Subject:
Diesel Generator Control Panel Mounts (SER Confirmatory Issue C-30)
Dear Sir:
SER Confirmatory Issue C-30 (SER Section 9.5.4.1) involves an NRC concern with potential degradation from operational vibration of components mounted in a relay panel on the emergency diesel generators which could affect diesel operation. As provided in SER Section 9.5.4.1, this concern could be resolved by one of three methods; (1) independent vibration qualification, (2) moving the panel off the diesel skid, or (3) qualification by the compcnent manufacturers. The method chosen to qualify the affected components was independent vibration qualification testing to the vibrational levels which the components would be exposed to during the life of the plant.
Three (3) types of control devices mounted in the relay panel were identified whose failure could degrade operation or cause shutdown of the engine:
(a) Gould J13 control relays, (b) AGASTAT timing relays, and (c) a
,Synchrostart speed switch. The testing programs and test results for these devices are discussed below.
For Items (a) and (b), the testing was performed at the National Technical Systems (NTS) Laboratories (Acton Labs) and the results of the testing are documented in Test Report No. 21030-86N-1.
8602280100 860224 PDR ADOCK 05000443 E
PDR 00 P.O Box 300 Seobrook.NH 03874. Tolophone(603)474-9521
United States Nuclear Regulatory Commission February 24, 1986 Attention:
Mr. Vincent S. Noonan Page 2 The relays used for the NIS testing program were typical of those installed in the relay panel which is mounted on the emergency diesel generator skids at Seabrook Station.
Baseline functional tests were conducted prior to testing to provide performance / acceptability data to be compared with intermediate and final functional test results. This provided a means of monitoring any relay functional degradation which might occur due to vibration.
Vibration test levels were based on the test levels specified by Colt Industries (diesel generator manufacturer) in their qualification plan for other components on the diesel generator. These values were compared to field vibration data which was measured by NTS during actual diesel generator operation. A time compressed composite worst-case acceleration curve was then developed for use as the test input level.
The components were vibration tested utilizing a shaker table. The shaker table input motion was sinusoidal and directed sequentially along three axes (two horizontal and one vertical) in equal time intervals.
The vibration qualification testing for Item (c) was performed at the Wyle Laboratories for Colt Industries (diesel generator manufacturer) as part of the overall Qualification Program for the diesel generators. The results are documented in Test Report R-206086-551. The test program was similar to the program described above for Items (a) and (b).
Vibration testing of these components to the above-described programs has been completed. The results of there testa demonstrate that these components are not degraded by the operational vibration which they would be exposed to during the life of the plant. NTS Report No. 21030-86N-1 for Items (a) and (b) and pertinent excerpts from Colt Qualification Report No. R-206086-551 for Item (c) will be made available for staff review out of our Bethesda office if requested.
This completes our response to the above referenced SER Confirmatory Issue. Accordingly, we request that the resolution of this confirmatory issue be reflected in the next supplement to Seabrook Station's SER.
Very truly yours, wa%NbY
,f g
John DeVincentis, Director Engineering and Licensing Enclosures cc: Atomic Safety and Licensing Board Service List
Willi 23 S. Jcrdan, III Donald E. Chick Dione Curran Town FMnager Harmon, 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 G. 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 General Portsmouth, NH 03801 Augusta, ME 04333 Dana Bisbee, Esquire Mr. John B. Tanzer Assistant Attorney General j
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 Selectmen 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 Gavutis 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 i
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 Gordon 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)
H. Joseph Flynn Office of General Counsel i
Federal Emergency Management Agency 500 C Street, SW Washington, DC 20472
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