ML20209B585

Forwards Control Data Corp Part 21 Rept Re Error in Pipesd Computer Program,Used for Piping Analysis.Program Used at Diablo Canyon,But Should Not Affect Current Seismic Analysis Work

ML20209B585
Person / Time
Site:	05000000, Diablo Canyon
Issue date:	07/27/1982
From:	Baer R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:	Miraglia F Office of Nuclear Reactor Regulation
Shared Package
ML20209B094	List: CLI-81-30, Forwards Ltr to Util Re Approval of Teledyne Engineering Svcs 820402 Plan for Phase I of Independent Design Verification Program Per Commission Order CLI-81-30 & Request for Addl Info DD-82-10, Advises That Commission (W/O Commissioner Gilinsky) Has Agreed Not to Review DD-82-10 ML20209B088 ML20209B108 ML20209B121 ML20209B128 ML20209B163 ML20209B182 ML20209B189 ML20209B195 ML20209B200 ML20209B230 ML20209B236 ML20209B240 ML20209B252 ML20209B259 ML20209B324 ML20209B341 ML20209B345 ML20209B351 ML20209B360 ML20209B427 ML20209B433 ML20209B439 ML20209B498 ML20209B507 ML20209B533 ML20209B551 ML20209B566 ML20209B585 ML20209B591 ML20209B618 ML20209B630 ML20209B638 ML20209B642 ML20209B665 ML20209B669 ML20209B676 ML20209B690 ML20209B703 ML20209B780 ML20209B787 ML20209B794 ML20209B805 ML20209B818 ML20209B828 ML20209B832 ML20209B837 ML20209B841 ML20209B850 ... further results
References
NUDOCS 8208230457
Download: ML20209B585 (1)

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JUL 27 1982 MEMORANDUM FOR:

F. J. Mi'raglia, Chief, Licensing Branch 3, Division of Licensing, NRR FROM:

R. L. Baer, Chief, Engineering and Technical Support -

Branch,DEQA,IE,

SUBJECT:

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. We have requested that Region IV review the extent of the error during their current inspection at CDC to verify that seismic analysis results will not be affected.

Based on the enclosed notification, the error requires several conditions to be present and should apply to a limited number of analyses. However sincesthe computer program was used at Diablo, there is a~ potential that some non dynamic

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(thermal, deadweight, etc.) analyses could be affected by the error.

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.I Robert L. Baer, Chief

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Engineering and Technical Support Branch Division of Engineering and Quality Assurance Office of Inspection and Enforcement

Enclosure:

As stated cc:

E. Jordan, IE A. Dromerick, IE J. Fair, IE H. Schierling, NRR R. Brickley, RIV R. Bosnak, NRR U. Mills, IE NRR p ueW g

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