ML20091C464
| ML20091C464 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 05/22/1984 |
| From: | William Jones OMAHA PUBLIC POWER DISTRICT |
| To: | John Miller Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20091C466 | List: |
| References | |
| IEB-80-11, LIC-84-144, NUDOCS 8405300573 | |
| Download: ML20091C464 (2) | |
Text
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Omaha Public Power District 1623 Harney Omaha Nebraska 68102 402/536 4000 May 22, 1984 LIC-84-144 Mr. James R.
Miller, Chief U.
S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Division of Licensing Operating Reactors Branch No. 3 Washington, D.C.
20555
References:
(1)
Docke t No. 50-285 (2)
NRC letter from J.
R.
Miller to W.
C.
Jones dated February 6, 1984 (3)
OPPD letter from W.
C. Jones to J.
R.
Miller dated March 9, 1984
Dear Mr. Miller:
Masonry Wall Design IE Bulletin 80-11 In a letter dated March 9, 1984, the District provided its response to your request for additional information dated February 6, 1984 concerning the above subject.
The Dis-trict's answer to Question 4 in that response stated:
"During the re-evaluation program it was concluded that there are no attachments on the masonry walls which could cause a block pull out under seismic loads.
The only attachments on the masonry walls are some light weight non-safety related equipment.
l During a seismic event these attachments would fail l
before they would result in a block pull out.
How-ever, the District will perform the block pull out calculations for each attachment to these masonry walls to justify this conclusion and provide the Commission with sample calculations by the end of the 1984 refueling outage, May 15, 1984."
B405300573 840522 PDR ADOCK 05000285 G
PDR g//
45.5124 Employment with Eaual Opportunity j
male /remale
Mr. James R. Miller LIC-84-144 Page Two The District has completed its calculations, as stated above, and the results of those calculations support the District's position that during a seismic event-the attach-ments to masonry walls would fail prior to block pull out.
Attached you will find sample calculations for the worst case situations.
Sincerely, N
16 0 Divis/ pones W.
C.
ion Manager Production Operations WCJ/JJF:jmm Attachment cc:
LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Avenue, N.W.
Washington, D.C.
20036 Mr.
E. G. Tourigny, Project Manager Mr.
L.
A.
Yandell, Senior Resident Inspector I
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