ML20039G284
| ML20039G284 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 12/23/1981 |
| From: | Rhode G NIAGARA MOHAWK POWER CORP. |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8201150462 | |
| Download: ML20039G284 (2) | |
Text
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kl Y NIAGARA RUMOHAWK NIAGARA MollAWK POWER CORPORATION /300 ERIE BOULEVARD WEST, SYRACUSE. N Y.13202/ TELEPHONE (315) 4741511 December 23, 1981 c)
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Attention:
Mr. Richard W. Starostecki, Director P.2CEtVED Division of Resident and Project Inspection L.y JANI gg g U.S. fiuclear Regulatory Commission 5d,A 631 Park Avenue
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King of Pru ssia, PA 19406 h
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f Re: Nine Mile Point Unit 2 4
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,W Docket No. 50-410
Dear Mr. Starostecki:
Enclosea is an interim 30 cay report in accordance wi 10 CFR 50.SS(e) fer the deficiency regarding Power-Strut spring nuts. This condition was reported by telephone to Mr. H. Kister of your staff on November 25, 1981. A final report will be submitted by March 31, 1982.
Very truly yours, NIAGARA MOHAWK POWER CORPORATION W,
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hode Vice Presi t
System Project Management PM:ja Enclo sure 8201150462 811223 PDR ADOCK 05000410 SOg S
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NIAGARA M0 HAWK POWER CORPORATION NINE MILE POINT CNIT 2 DOCKET NO. 50-410 INTERIM REPORT FOR REPGRTABLE DEFICIENCY REGARDING POWER-STRUT SPRING NUTS Description of the Deficiency The potential problem involves Power-Strut spring nuts with shallow depth of serration s.
These spring nuts may have lower slip load values in chear a
loading (slip along axis of the channel) than oesigned for.
By a letter dated November 9,1981 Power-Strut notified the Nuclear Regulatory Commission under 10 CFR 21 of a potential problem regaroing Pcwer-Strut spring nuts.
Power-Strut has indicated that the potential problem has been identified to a specific lot cf par t number PS-9227-1/2RS spring nuts.
Power-Strut has requested we return the 2000 PS-9227-1/2RS spring nuts which hao been oelivereo to the linit 2 construction site. The 2,'.03 spring nut s have since been returned to Power-Strut. The problem is still being investigateo and a final report, including the corrective action to be taken and an analy: sis of implications, will be submitted by March 31, 1982.
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