ML20037B745

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RO 80-18/1P:on 801105,main Steam Line Support Members MSRH-32 & MSRH-28 Found to Have Failed Welds Between Support Members & Support Structure.Cause of Failure Unknown.Investigating Problem.Addl Info to Be Filed
ML20037B745
Person / Time
Site: Millstone, 05000246  
Issue date: 11/06/1980
From: Mroczka E
NORTHEAST UTILITIES
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
MP-7-1651, RO-80-18-1P, NUDOCS 8011200311
Download: ML20037B745 (1)


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RegTon 1 Office of Ins pection and Enforcesnent U.S. Nucl ea r Regula tory Comeri ssTon

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Provi s ional License CPR-21 Docket No. 50-246 Roportable Occurronce RO-80-18/1P

Dear Mr. Grier:

This lotter is forwarded to provide pranpt notification of Aaportable occurrence RO-00-18/1P as requi red by the Millstone Unit 1 Technical spectftcations.

On Novesaber 5, 1980 at 0930 tours, two ( 2) unein-stcaen line support snembe rs (MSRM-32 and MSRH-as) were found to have failed weles be tween th e sup po rt acmbe rs and the support structure.

The cause of failu re is not kn own at the present time s an investigation Ts its progress.

Addi ti onal infonna tion i ncludi ng the cause of failure and corrective action will be i ncl u ded tn a 14 day fol low-up report.

Yours truly, f(ORTHCAST NUCLEAR ENERGY COMPANY E.J.

Mroczka Station Supe ri n t endent Mills tone Nuclear Power Station EJH/MJB-kmf cc:

Director, Of fice of Management Infonna tion and Prograun Control,

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