ML19320C668
| ML19320C668 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/30/1980 |
| From: | Crouse R TOLEDO EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 1-146, IEB-79-14, NUDOCS 8007170532 | |
| Download: ML19320C668 (2) | |
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TOLEDO h EDISON Docket No. 50-346 Rcsano P Caoust ll" "
License No. NPF-3 u,gm,3n, Serial No. 1-146 June 30, 1980 Mr. James G. Keppler Regional Director, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
IE Bulletin No. 79-14, dated July 2, 1979, requested that we develop and implement an inspection program to verify that the Davis-Besse Nuclear Power Station Unit 1 seismic analysis input of safety related piping systems conforms to the actual field conditions.
Our inspection of normally accessible safety related piping was completed September 21, 1979. The results of our detailed engineering reviews of the inspection packages and follow-on analytical work required by Item 4B of the Bulletin were submitted on October 19, 1979 and June 16, 1980, and show that none of the discrepancies found during the inspection of accessible piping affect system operability.
Our inspection of normally inaccessible safety related piping was completed May 22, 1980. Discrepancies found during the inspection were reviewed in accordance with the guidance provided in Supplement Nos. I and 2 to IE Bulletin No. 79-14.
Attached are our detailed engineering reviews for all of the field inspection packages. These reviews indicates that there are two deviations which affect system operability. These will be corrected prior to startup from our current refueling outage.
Other discrepancies found during the inspection of inaccessible piping systems do not affect system operability. Our schedule for follow-on analytical work required under Item 4B of the Bulletin to support our findings is also attached.
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This completes our walkdown of accessible and inaccessible safety related piping system and the detailed engineering evaluation of the discrepancies found during these walkdowns. Upon correction of the two deviations mentioned above and discussed in more detail in the attached report, we feel confident that the Davis-Besse seismic analysis acceptably conforms to the as-built safety related systems.
Yours very truly, ff ; = _2 RPC:CLM Attachments db d/2-3 cc:
U.S. Nuclear Regulatory Commission Office of Inspection & Enforcement Division of Reactor Operations Inspection Washington, D.C.
20555 U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulations Division of Operating Reactors Washington, D.C.
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