ML25168A044
| ML25168A044 | |
| Person / Time | |
|---|---|
| Issue date: | 04/29/1983 |
| From: | Ebersole J Advisory Committee on Reactor Safeguards |
| To: | Dircks W NRC/EDO |
| References | |
| Download: ML25168A044 (1) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEE ON REACTOR SAFEGUARDS WASHINGTON, D. C. 20555 April 29, 1983 Mr. William J. Dircks Executive Director for Operations
- u. S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Dircks:
SUBJECT:
SURVIVABILITY OF SAFETY-RELATED EQUIPMENT During its 276th meeting, April 14-16, 1983, the ACRS discussed with the NRC Staff and the Seabrook OL Applicant the question of the survivability of equipment important to safety in the event of the burning of large quantities of hydrogen in a large, dry PWR containment. Current require-ments for large, dry PWR containments do not include such events involving quantities of hydrogen beyond those calculated to be generated in a 11well-behaved 11 LOCA.
However, NRC Staff members present stated their belief that current environmental qualification requirements would, if met, enable the equipment of interest to survive such an event.
The Applicant's representa-tives noted, however, that the matter had not been explicitly examined.
The Committee believes that the Staff should consider the need for equipment to be qualified to survive a large hydrogen burn in large, dry PWR contain-ments. In particular, attention should be directed toward equipment neces-sary to shut a plant down, to continue to remove decay heat, and to maintain the integrity of containment for long periods.
If, on reflection, the NRC Staff is of the opinion that current environmental qualification requirements lead automatically to equipment qualified to withstand such an event, please inform the Committee.
Sincerely, f~f,'j__,b/~
b Jesse C. Ebersole Acting Chairman 2897