ML20063H434

Special Rept:On 931210,discovered Discrepancy in Three Impellers Purchased by Util to Be Used on Byron Jackson Type 28RXL VC Two Stage Pump.Impellers Shipped to Bw/Ip for Evaluation

ML20063H434
Person / Time
Site:	Fort Calhoun
Issue date:	02/08/1994
From:	William Jones OMAHA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9402180052
Download: ML20063H434 (1)

Text

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' Omaha Public Power District C"H8m U"" 444 South 16th Street Mall

• "'" Omaha, Nebraska 68102-2247 402 6 2000 February 8, 1994 LIC-94-0049 U. S. Nuclear Regulatory Commission l ATTN: Document Control Desk Mail Station Pl-137 ,

Washington, DC 20555 l

Reference:

Docket No. 50-285 Gentlemen:  ;

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SUBJECT:

Interim Report Pursuant to 10 CFR 21.21(a)(2) Concerning Byron Jackson Pumps I

0maha Public Power District (0 PPD) is investigating a discrepancy in the length of the impeller wear ring running fit of Byron Jackson raw water pump impellers purchased from BW/IP International, Inc., Pump Division, for use at the Fort Calhcun Station. Since the specific tolerances / dimensions were not  !

available to OPPD (e.g. proprietary information), the evaluation of this j discrepancy could not be completed within the required 60 days.

On December 10, 1993, OPPD discovered a discrepancy in three impellers purchased by OPPD to be used on a Byron Jackson type 28RXL VC two-stage pump.

The discrepancy concerns the physical dimensions of the wear ring which would not allow installation of the impellers into the pump. Since OPPD could not verify what the required dimensions should be, the three pump impellers were shipped to BW/IP for evaluation. 4 l

The results of BW/IP's investigations were received by 0 PPD on January 28, and i February 1, 1994. OPPD was informed on February 4, 1994 that the BW/IP Part 21 Evaluation Board has determined that this discrepancy is not reportable.

OPPD will complete its evaluation of this issue by March 9,1994.

If you have additional questions, or require further information, please do not hesitate to contact me or members of my staff.

S,incerely, b

W.C.Iones SenioriVice President WCJ/brh b7 c: LeBoeuf, Lamb, Leiby & MacRae L. J. Callan, NRC Regional Administrator, Region IV S. D. Bloom, NRC Project Manager R. ". Mullikin, NRC Senior Resident Inspector D. nam, Manager of Quality, BW/IP 9402180052 940208 9 W"*"t yeQl"opratunity y

PDR ADOCK 05000285 I Mf 2

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