ML20084C995

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Submits Addl Info on Insp of Bergen-Paterson Shock Suppressors & Restraints,Completing 740620 Snubber Failure Reporting Requirement
ML20084C995
Person / Time
Site: Millstone, Dresden, Quad Cities, 05000000
Issue date: 02/28/1975
From: Stephenson B
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084C998 List:
References
121-75, NUDOCS 8304080442
Download: ML20084C995 (2)


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Address ly to: Post Ofhce Box 767 Chicago, Illinois 60690 BBS Ltr. #121-75 Dresden Nuclear Power Station R. R. #1 Morris, Illinois February 28, 1975 Mr. James G. Keppler, Regional Director Directorate of Regulatory Operations-Region III U. S. Nuclear Regulatory Cocnission 799 Roosevelt Road Glen Ellyn, Illinois 60137

SUBJECT:

LIC MSE DPR-19 DRESDEN NUCLEAR POWER STATION. UNIT 2.

ADDITIONAL INFOR-MATION ON REPORT OF INSPECTION OF BERGEN-PATERSON SHOCK SUFFRESSORS AND RESTRAINTS

References:

Letter from B. B. Stephenson to J. F. O' Leary dated June 20, 1974 Dear Mr. Keppler In response to an internal audit made by the off-site review function, the following additional information is supplied to complete the incident reporting requirement.

In light of the cumulative experience in which the previous anubbers failed as a result of the brittle polyurethane seal material, the continued 120 day inspection of these drywell snubbers will minimize the possibility of a more inoperable snubbers. In addition, as a result of the present (June 20, 1974) anubbers failures, a review of design loadings of the area where some of these snubbers are located is being made. The results of this review will be documented in a followup letter along with other snubber information as conunitted to in the June 20, 1974 letter referenced above.

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