ML20064G681
| ML20064G681 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 09/20/1982 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| REF-SSINS-6820 IEB-82-01, IEB-82-1, NUDOCS 8301110597 | |
| Download: ML20064G681 (3) | |
Text
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l..sn COnsumets POW 8r Jessise W Cook C0mpany i
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oeneret offices: 1945 West Pernell Road. Jackson, MI 49201 e (617) 7880463 September 20, 1982 Mr J G Keppler US Nuclear Regulatory Commission Region III 799 Roosevelt Rd Glen Ellyn, IL 60137 MIDLAND NUCLEAR C0 GENERATION PLANT DOCKET NOS 50-329 & 50-330 IE BULLETIN 82-01, REVISION 1, SUPPLEMENT NO 1 FILE 0505.12 SERIAL 18856 IE Bulletin 82-01, Rev 1, Supplement 1, "Alterat. ions of Radiographs of Welds in Piping Subassemblies", action no I requires Consumers Power Company to conduct a 100% review of all radiography representing welds associated with pipe wall thicknesses less than 1/2 inch in shop fabricated Quality Classes 1 and 2 subassemblies provided by ITT Grinnell, Kernersville, NC.
The purpose of the review was to evaluate ASME Code penetrameter sensitivity to determine if it was altered, discernible and that adequate weld quality was demoJis t ra ted.
In December 1981, CP Co completed a 100% review of all ITT Grinnell, Kernersville, NC, radiography provided to the Midland Nuclear Site. This review was not limited to material thicknesses less than 1/2 inch, but included all pipe wall thicknesses. This review included approximately 24,000 radiographs representing approximately 5,000 welds. The results of this review are as follows:
1.
Four welds were found which had the 4T holes altered in radiographs.
These welds have already been reported to the NRC and are specifically addressed in Supplement No 1 of the subject bulletin. Three of the four welds were reradiographed, and the welds were determined to be acceptable without any need for rework or repair. The fourth weld was previously removed during a piping system modification and no longer exists.
2.
Three welds for pipe wall thicknesses less than 1/2 inch and two welds for pipe wall thicknesses 1/2 inch and greater were considered by CP Co not to have the required quality level visible.
N_o alteration was involved, only that the required penetrameter hole was not considered visible. All five welds were rcradiographed and found to be acceptable without need for either rework or repair.
miO982-0059al68 8301110597 820920 4882Uc)f 05000 2 gDRADOCK pp OCT
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S;ricl 18856 2-3.
Two welds for pipe wall thicknesses less than 1/2 inch (completely separate from items (1) and (2) above) were considered by CP Co to contain questionable weld indications. - Both welds were repaired, rcradiographed and are now acceptable.
Based on the results of the review outlined above, we consider the action required by this bulletin to be complete.
JWC/WJil/acr CC RJCook, Midland Resident Inspector RCDeYoung, NRC DSilood, NRC DBHiller (3), Midland NCMoseley, NRC
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CONSUMERS POWER COMPANY j
MIDLAND NUCLEAR C0 GENERATION PLANT DOCKETS 50-329 & 50-330 RESPONSE TO IE BULLETIN NO 82-01, REV 1, SUPPLEMENT 1, ACTION ITEM 1 At the request of the Commission and pursuant to the Atomic Energy Act of 1954 and the Energy Reorganization Act of 1974, as amended, and the Commission's Rules and Regulations thereunder, Consumers Power Company submits our response to Action item 1 of IE Bulletin 82-01, Rev 1, Supplement 1, August 18, 1982.
" CONSUMERS POWER COMPANY t
y BY J W Cook, Vice President Pro. cts, Engineering and Construction
/
Sworn'and subscribed to before me this 27 day of. September % 1982.
a.* 1 Notary Public Jackson County, Michigan My conunission expires lentember_D.EDL miO982-0059bl68
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