ML19344A514

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Responds to IE Bulletin 80-11, Masonry Wall Design. No Integral Masonry Block Walls Exist in safety-related Areas. No re-evaluation Is Necessary for Masonry Blocks Used for Shielding Purposes
ML19344A514
Person / Time
Site: Cooper Entergy icon.png
Issue date: 07/03/1980
From: Pilant J
NEBRASKA PUBLIC POWER DISTRICT
To: Seyfrit K
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
IEB-80-11, LQA8000330, TAC-42878, NUDOCS 8008200548
Download: ML19344A514 (1)


Text

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< .o bec to 9AC:ADM:

CENTRAL FILES PDR:HQ LPDR dCNSIC Nebraska Public Power District ' ' ' fe"g g

July 3, 1980 Mr. Karl V. Seyfrit, DirecM r i U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region IV 611 Ryan Plaza Drive Suite 1000 Arlington, TX 76011

Subject:

IE Bulletin N;. 80 ' ' '

" Masonry Wall Design"

Dear Mr. Seyfrit:

Action Item 1 of the subject bulletin required Nebraska Public Power District to ident12y all masonry walls in our Cooper Nuclear Station which are in

~

proximity to or have attachments' from safety-re'la'ted piping or equipment such '

, that, wal2, failure could affect. a safety-related system. A field survey of areas.

accessible and normally inaccessible was; conducted during the recent refueling

~ '

.outiagd arid a. review. of . drawings f.or saf'et.y-reidiedb' uilding aread was performed ~ .

^"

'bythe Arsfiifecit!-Niigi'neer 'for 'CNS ' WS intergral ' mis'onry lilock ' walls exist"in ^

s_afety related. areas.-

  • As described in FSAR Amendments 9 and 13 response to questions 12.3 and 12.45, masonry blocks. are us.ed for .sliielding p.urposes; however, no, mortar is set . ,

' between the joints and the shield blocks are cont'ained within steel decking and are not intended for structural strength. The field survey verified that no piping or equipment was attached to these blocks; therefore, no re-evaluation

' '.per Action Items .2 and 3 is necessary. ' .* -

  • It is estimated that 52 manhours'were spent *in' conduct of the review and prepa-ration of this report.

If you have any questions regarding this matter, please contact me.

Sincerely, J. .. Pilant Director of Licensing & Quality Assurance '

JDW/c1 cc: Office of Inspection and Enforcement Division of Reactor Operations Inspection U.S. Nuclear Regulatory Commission Washington, D.C. 20555 8008200 g g