ML20134C340
| ML20134C340 | |
| Person / Time | |
|---|---|
| Issue date: | 08/13/1985 |
| From: | Ward D Advisory Committee on Reactor Safeguards |
| To: | Palladino N NRC COMMISSION (OCM) |
| References | |
| REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR ACRS-R-1153, NUDOCS 8508160276 | |
| Download: ML20134C340 (1) | |
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WASm NGTON, D. C. 20555 August 13, 1985 Honorable Nunzio J. Palladino Chainnan U. S. Nuclear Regulatory Comission Washington, DC 20555
Dear Dr. Palladino:
SUBJECT:
ACRS COMMENTS ON THE STATUS OF USI A-46 (SEISMIC QUALIFICATION OF EQUIPMENT IN OPERATING PLANTS)
During its 304th meeting, August 8-10, 1985, the Advisory Comittee on Reactor Safeguards was briefed on the status of USI A-46 (Seismic Qualification of Equipment in Operating Plants) and its proposed resolu-tion.
The briefing included presentations by representatives of the Seismic Qualification Utilities Group (SQUG) and the NRC Staff. A more detailed briefing was presented to the ACRS Subcomittee on the Quali-fication Program for Safety-Related Equipment during a meeting in Washington, D.C. on August 6, 1985.
The ACRS has also had the benefit of previous briefings on the status of USI A-46 during its 279th meeting, July,7-9, 1983, and during its 289th meeting, May 10-12, 1984.
On each occasion we endorsed the approach being pursued by the NRC Staff in conjunction with the SQUG, and in our May 16, 1984 letter offered coments concerning Task 4 (Seismic Quali-fication of Equipment Using Seismic Experience Data).
USI A-46 applies to all nuclear plants not licensed under current seismic qualification requirements as defined in Regulatory Guide 1.100, IEEE Standard 344-1975 and Standard Review Plan 3.10.
We believe that the resolutioh to USI A-46, as currently proposed by the NRC Staff, adequately addresses the issue of seismic qualification in operating plants to which it applies.
We also believe the technique of using actual experience data in the seismic qualification of equipment has considerable merit, and we suggest that the NRC Staff study the feasibility of applying the knowl-edge gained, when this may be relevant, to the resolution of new seismic qualification issues as they arise.
We will continue to follow the status of this issue and intend to review and coment on the final proposed resolution following the public coment phase.
Sincerely,
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