ML20086D537

Telecopy Ro:Insp of Internal Torus Catwalk Support Structure Revealed That Catwalk Mitered Sections Not All Attached to Horizontal Catwalk Support Plates in Some Manner.Attachment Locations Will Be Upgraded

ML20086D537
Person / Time
Site:	Monticello, 05000000
Issue date:	10/14/1977
From:	Eliason L NORTHERN STATES POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19289B550	List: ML20086D481 ML20086D514 ML20086D520 ML20086D537 ML20086D550 ML20086D554 ML20086D557 ML20086D561 ML20086D567 ML20086D606 ML20086D642 ML20086D691 ML20086D703 ML20086D760 ML20086D788 ML20086D818 ML20086D823
References
NUDOCS 8312020211
Download: ML20086D537 (2)

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7 Map l NORTHERN STATES POWER COMPANY Monticello Nuc1 car Generating Plant Monticello, Mirmesota 55362

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! October 14, 1977 i

1 Mr. J. G. Keppler, Director j Region III

Office of Inspection tmd Diforcement l' United States Nuclear Regulatory Conmission 799 Roosevelt Road i Glen Ellyn, Illinois 60137 l

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Dear Mr. Keppler:

i i ANTICELLO NLICLTAR GDERTTING PIANT Dochet No. 50-263 License No. DPR-22 f An inspection of the internal torus catwalk support structure revealed that the catwalk mitered sectionn were not all attached to the horizontal f catwalk support plates in the sarr manner, A subsequent review of the support

! stmeture installation drmfings revealed that all the catwalk mitered sections i are required to be both welded and bolted to the support plates at each attach-ment location. Of the sixty four attacimient locations (four per mitered section),

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! two locations locations are are neither bolted wclded and and welded, nor the bolted, two locations reraaining are are locations welded onlyly.wo bolted on All attaciment locations will be upgraded to neet the original design requirements l prior to the completion of the current outage.

,i i Yours very tnlly, dl ,

[ h. R. Eliaso:i' l Plant Manager i

i LRE/kik I cc: Director, Office of Management Infomation j and Program Control G Chamoff Minnesota Pollution Control Agency i Attn: J h' Feman j File I Copy sent by telecopier to Keppler.

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NORTHERN STATES POWER COMPANY Monticello 16cicar Generating Plant Monticello, Minnesotu 55362 h 26 Y.

October 14, 1977 Mr. J. G. Keppler, Director Region III Office of Inspection and Enforce: rent United States Ibclear Regulatoly Cor.raission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

!MYflC111D !?JCITAR GDWNtTIMi PJJ0fr Dachet No. 50-265 License No. DPR-22 An inspection of the internal toms catvalk support structure revealed that the catwalk mitered sections were not all attached to the horizontn1 catvalk support plates in the sar.c manner. A subsequent review of the support stmeture installation drawings revealed that all the catalk mitered sections are requirod to be both wided and bolted to the support plates at each attach-ment location. Of the sixty four attacluncnt locations (four per mitered section),

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• two locations locations are neither are bolted wclded nor and welded, andbolted, twa locations the remaining are are locations welded onlyly.w.o bolted on i

l All attaciment locations will be upgraded to reet the original design requircncnts l prior to the co:pletion of the current outage.

Yours very truly, o

l.. R. El3ason f.

Plant Manager l UE/kik cc: Director, Office of Management Infonnation and Progrms Contml G Chamoff Minnesota Pollution-Control Agency-Attn: J k' Feman File Copy sent. by telecopier to Keppler,

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