ML20023D099
| ML20023D099 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 05/10/1983 |
| From: | Williams J CINCINNATI GAS & ELECTRIC CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, LOZ-83-0027, LOZ-83-27, NUDOCS 8305190228 | |
| Download: ML20023D099 (2) | |
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1 THE CINCINNATI GAS & ELECTRIC COMPANY CINCINNATI. OHIO 45201 May 10, 1983
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LOZ-83-0027 NUCLE AR OPERAtlON.
Docket No. 50-358 U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 Attention:
Mr. J.G.
Keppler Regional Administrator Gentlemen:
RE:
WM. H.
ZIMMER NUCLEAR POWER STATION - UNIT 1 10CFR50. 55 (e), ITEM M-84, SPENT FUEL RACK SPACING W.O.
57300, JOB E-5590, FILE NO. 956C, M-84 The subject condition was initially reported to the Commission as a potentially reportable deficiency on April 15, 1983, pending completion of an engineering evaluation to determine its significance.
As reported, a center-to-center spacing of 24.375" minimum between spent fuel racks had been discovered.
The response to FSAR question 020.24 stated a center-to-center spacing of 24.8125" between spent fuel racks.
General Electric was notified of the subject condition and was requested to evaluate this discrepancy.
Their evaluation is as follows:
The 24.8125" center-to-center distance given in the FSAR is a nominal dimension.
GE's criticality calculations are based on a minimum dimension between the rows within each individual rack.
The spacing between the inner rows of adjacent racks, using the as-built 24.375" minimum, results in a dimension which exceeds the minimum used for GE's criticality calculations.
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.s Mr. J.G. Keppler Regional Administrator May 10, 1983 LOZ-83-0027 Page 2 Based on General Electric's evaluation we do not believe the subject condition to be a significant deficiency, and therefore, it is not reportable under the requirements of 10CFR50.55(e).
Very truly yours, THE CINCINNATI GAS & ELECTRIC COMPANY By Mg
. WILLIAMS, KR.
ENIOR VICE PRESIDENT RNT/FJS/sfr cc:
NRC Office of Inspection-& Enforcement
' Washington, D.C.
20555 NRC Senior Resident Inspector ATTN:
W.F. Christianson NRC Zimmer Project Inspector Region III i
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