ML19331D900
| ML19331D900 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 08/12/1980 |
| From: | Novak T Office of Nuclear Reactor Regulation |
| To: | Andognini G BOSTON EDISON CO. |
| References | |
| NUDOCS 8009040114 | |
| Download: ML19331D900 (4) | |
Text
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UNITED STATES E'
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August 12, 1980 Docket No. 50-293 Mr. G. Carl Andognini Boston Edison Company M/C NUCLEAR 800 Boylston Street Boston, Massachusetts 02199
Dear Mr. Andognini:
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The enclosure is a request for additional information regarding BECo letter 76-11 of January 27, 1976. This letter proposed exemption to 10 CFR 50 Appendix J (Containment Leakage Testing).
Your response is requested within 45 days of the receipt of this letter.
Any questions should be addressed to your project manager.
Sincerely, Sk Thomas M. Novak, Assistant Director
, for 0perating Reactors Division of Licensing
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page S 009 0 4 0//Y '
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Mr. G. Carl Andognini Boston Edison Company cc:
Mr. Paul J. McGuire Pilgrim Station Acting Manager B'oston Edison Company RFD #1, Rocky Hill Road Plymouth, Massachusetts 02360 Henry Herrmann, Esquire Massachusetts Wildlife Federation 151 Tremont Street Boston, Massachusetts 02111 Plymouth Public Library North Street Plymouth, Massachusetts 02360 Resident Inspector c/o U. S. NRC P. O. Box 867 Plymouth, Massachusetts 02360
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f.f REQUEST FOR ADDITIONAL INFORMATION
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IMPLEMENTATION OF 10CFR50, APPENDIX J.
SP CONTAINMENT LEAKAGE TESTING 4
PILGRIM STATION UNIT 1
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1.0 BACKGROUND
By a letter dated January 27, 1976, Boston Edison Company (BEC) requested certain exe:ptions from the requirements of 10CFR50, Appendix J, Containment Leakage Testing for Pilgrim Station Unit 1.
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- 2.0 INFORMATION REQUIRED 2.1 FEEDWATER SYSTEM CHECK VALVES BEC requested an exe=ption to test feedvater check valves with water as a mediu= in lieu of air or nitrogen. This approach ~1s. acceptable provided the test is used to verify that the check valve vill re=ain water-covered t'hrough-out the post-accident period.
Provide the following information needed to cc=plete our review of this request:
1.
The initial volume of water. in the line at the. start of the accident.
2.
The acceptance criteria for the hydrostati: test (e.g.,
leakage rate limit, pressure decay licit, etc.).
2.2 ISOLATION CHECK VALVES IN THE REACTOR WATER CLEAN-UP RETURN, REACTOR CO?l ISOLATION COOLING (RCIC) PUMP DISCHAM E, HIGH PRESSURE C00LAST INJECTION (HPCI) PUMP DISCHARGE, CO?l SPRAY TO REACTOR, AND RESIDUAL EEAT REMOVAL (FSR) VESSEL INJECTION LINES BEC has stated that replacing these check valves with air-testable check valves was not considered justified since the purpose of these valves is to li=1t reverse direction flov in case of a postulated upstrea: pipe break until downstream motor-operated isolation velves are shut.
The statement implies that testing of these valves with water as a medium is at least possible and perhaps currently required.
Provide your proposal to verify that these valves vill limit reverse direction flow for a sufficient period of td=e to permit downstream isolation including:
1.
Indications available to the operator to identify a line which should be is: lated by its downstrea: :otor-operated isolation valve.
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The initial water volume in the line at the start of the accident.
3.
The acceptance criteria for any required test.
Additionally, provide the following infor=ation needed to complete all aspects of this review:
1.
For each of the penetrations involved (9a,b; 10 a,b; 51a,b) identify the valves installed to perform a contain=ent isolation function in accordance with General Design Criterion SS (10CFR50, A'ppendix A).
2.
Indicate the locations (inside or outside containment), type valve, and automatic features for each of the valves of paragraph 1 above.
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