ML16340C758
| ML16340C758 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 08/17/1982 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | Ahearne J, Gilinsky V, Palladino N NRC COMMISSION (OCM) |
| Shared Package | |
| ML16340C759 | List: |
| References | |
| REF-PT21-82, TASK-AS, TASK-BN-82-86 BN--82-86, NUDOCS 8208230071 | |
| Download: ML16340C758 (4) | |
Text
Docket No.:
50-275 AOti I g. tg MEMORANDUM FOR:
Chairman Palladino Commissioner Gilinsky Commissioner Ahearne Commissioner Roberts Commissioner Asselstine FROM:
SUBJECT:
Darrell G. Eisenhut, Director Division of Licensing Office of Nuclear Reactor Regulation INFORMATION ITEMS REGARDING THE DESIGN VERIFICATION PROGRAM -
PHASE 1
FOR DIABLO CANYON, UNIT 1 (Board Notification No. 82-86)
In accordance with present NRC procedures for Board Notification, the follow'ing is enclosed for information of the Commission:
July 7, 1982 letter from Mr. Staton, Control Data Corporation, to Mr. Victor Stello in regard to Part 21 report on PIPESD computer program.
The enclosed Part 21 report from Control Data Corporation (CDC) identified an error in the computer program PIPESD used for piping analysis.
This computer program has been used to perform piping analyses at Diablo Canyon.
The enclosed notification states, "Results from time history load cases and response spectrum cases are unaffected.,",.
Therefore, the error should not affect the current seismic analysis work at Diablo Canyon.
Based on the enclosed notification, the error requires several conditions to be present and should apply to a limited number of analyses.
However, since the computer program was used at Diablo Canyon, there is a potential that some non dynamic (thermal, deadweight, etc.) analyses<could be affected by the error.
We will inform the Commission on any new pertinent information on this matter.
The material does not pertain to those matters that werer res.resolved by ALAB 644.
8208230071 8208 17 PDR ADOCK 05000275 8
Enclosure:
As stated
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