ML20236V056

Advises That Changes Described in Util 1987 Updated SAR within Scope of 10CFR50.59 or Previously Evaluated & Found Acceptable.Comments on Specific Issues Encl

ML20236V056
Person / Time
Site:	Cooper
Issue date:	11/25/1987
From:	Long W Office of Nuclear Reactor Regulation
To:	Trevors G NEBRASKA PUBLIC POWER DISTRICT
References
TAC-65914, NUDOCS 8712040059
Download: ML20236V056 (4)

Text

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. November 25, 1987-

,c Docket No. 50-298 Mr. George A. Trevors, Division Manager - Nuclear Support Nebras'ka Public Power District P.O. Box 499 Columbus, Nubraska 68601

SUBJECT:

1987 COOPER NUCLEAR STATION USAR UPDATE (TAC NO. 65914)

The staff has reviewed your November 12, 1987 response to our request for

, additional information regarding the 1987 Cooper USAR update. Enclosed, are i our comments in the specific issues.

l We have concluded that each change described in the 1987 USAR update was either within the scope of changes permitted by 10 CFR 50.59 or was previously evaluated by the staff and found acceptable.

Sincerely, l

ph William O. Long, Project Manager Project' Directorate - IV i Division of Reactor Projects - III, i IV, V and Special Projects

Enclosure:

As stated cc w/ enclosure:

See next page l DISTRIBUTION Docket File NRC PDR Local PDR PD4 Reading DR4A/ Collins J. Calvo P. Noonan W. Long OGC-Bethesda E. Jordan J. Partlow ACRS (10)

PD4 Plant File G. Madsen E. Holler W.R. Bennett PD4/LA M PD4:PM PD4:PD p10 PNoonan

• Blon V JCalvo N /tr/87 y/ 87 't/ W/87 I

e712040059 G71125 0 l PDR ADOCK 0500 1

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Mr. George ' A. Trevors i Cooper Nuclear Station-Nebraska Public Power [tgstrict cc:

Mr. G. D. Watson, General-Counsel Nebraska Public Power District P. O. Box 499 Columbus, Nebraska 68601 Cooper Nuclear Station.

ATTN: Mr. Guy R. Horn, Division Manager of Nuclear Operations P. O.-Box 98 Brownville, Nebraska 68321 Director Nebraska Department of' Environmental Control P. O. Box 94877 '

State House Station Lincoln, Nebraska 68509-4877 Mr. William Siebert, Commissioner Nemaha County Board of Commissioners l Nemaha County Courthouse Auburn, Nebraska 68305 Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 218 Brownville,' Nebraska 68321 -

Regional Administrator,. Region IV U.S. Nuclear Regulatory Commission  ;

611 Ryan Plaza Drive, Suite 1000 '.i Arlington, Texas 76011 l Mr. Harold Borchart, Director u Division of Radiological Health j Department of Health ,

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301 Centennial Mall, South P. O. Box 95007 .]

Lincoln, Nebraska 68509 ,

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l ATTACHMENT Item 1: Flooding control procedures In FSAR Amendment 9, the District committed to a semiannual review of flooding control procedures in res1onse to. staff concerns about flooding of the Missouri River. In tie 1987 USAR update the commit-ment is revised to a bienniel review. Since there is no applicable Technical Specification, and the change does not involve an unreviewed safety question, the USAR change is acknowledged.

Item 2: Thermal' fatigue cycles Previous USAR revisions indicate that certain fatigue transients are occurring at frequencies considerable in excess of those assumed in the original fatigue design basis and that analyses are being conducted l 'resulting in increases in the number of allowable transients. Assuming that your analytical methods are conservative, this is an acceptable practice and involves no unresolved safety issue. Furthermore since ,

the allowable number of fatigue cycles is not cited in Technica,l.

Specification (6.4.2.6) or elsewhere in the Technical Specifications, such changes are within the scope of 50.59. The District may therefore delete the fatigue cycle information as done in the 1987 USAR update.

Item 3: SLCS high energy line break evaluation The staff concurs with the District's deletion of the SLCS system from the list of ' systems described as requiring protection from high energy line break effects; the basis being that SLCS is not an

" Essential" system.

Item 4: Replacement of SRV figures:

The SRV replacement and associated USAR update was within the scope of 50.59 and is acknowledged.

Item 4: Deletion of RHR delta-P switches The USAR changes reflect previously approved changes and are acknow-ledged.

Item 5: SRAB member qualifications The District's exception to ANS 3.1 regarding baccalaureate degree requirements is not inconsistent with Technical Specifications and does not constitute an unresolved safety question. The change is therfore acknowledged.

Item 6: Basement flooding control The staff acknowledges the USAR change as reflecting an 50.59 modification.

.. ,V 2-Item 7: Seismic stress calculations In view of the fact that~the Mk I Program was previously approved by the sta.ff and the pipe replacement was an acceptable 50.59 modification, the USAR change is appropriate.

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