ML20236P054

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Forwards Rev 1 to Big Rock Point IGSCC Insp Program. Addl Review Determined That Seven Welds Not Previously Listed Partially Susceptible to Igscc.All Addl Welds Branch Connected to Stainless Steel Pipe
ML20236P054
Person / Time
Site: Big Rock Point File:Consumers Energy icon.png
Issue date: 11/13/1987
From: Frisch R
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20236P056 List:
References
GL-84-11, NUDOCS 8711170128
Download: ML20236P054 (1)


Text

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Consumers j) POWar

' t 4f POWERING l MKHIGAN'S PROGRESS l General offices: 1945 West Parnall Fload, Jackson, MI 49201 * (517) 788-0550 l November 13, 1987 i l

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4 Nuclear Regulatory Commission ,

Document Control Desk )

Washington, DC 20555 DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT -

GENERIC LETTER 84-11 INTERGRANULAR STRESS CORROSION CRACKING (IGSCC) l INSPECTION PROGRAM REVISION  ;

By letter dated September 30, 1987, Consumers Power Company submitted our l Intergranular Stress Corrosion Cracking (IGSCC) Inspection Program for Big Rock Point. Additional review has determined that an additional seven welds not previously listed are partially susceptible to IGSCC. All of these welds  ;

are branch connection welds where the branch connection is welded to larger )'

cast stainless steel pipe. Cast stainless steel pipe is not considered susceptible to IGSCC. Therefore, all of these additional welds will be examined from the branch connection side only.

Attachment I contains the necessary revisions to incorporate the addition welds. Areas that have been changed are indicated by a vertical line in the right hand margin. This attachment supersedes the previous listing submitted with our September 30,19% letter.

N Ral t h R Frisch Senior Licensing Analyst CC Administrator, Region III, NRC NRC Resident Inspector - Big Rock Point Plant Attachment 8711170128 871113 PDR ADDCK 05000155 G PDR OC1187-0203-NL01 gO El