ML20040A865
| ML20040A865 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 01/06/1982 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Delgeorge L COMMONWEALTH EDISON CO. |
| References | |
| GL-81-14, NUDOCS 8201220244 | |
| Download: ML20040A865 (3) | |
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DISTRIBUTION Dockets NRC PDR JAN 0 61987 L PDR TERA NSIC 3,
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Dear fir. DelGeorge:
In our review of the July 14, 1981 Commonwealth Edison Company response to NRC Generic Letter 81-14 concerning the seismic qualific'ation of the auxiliary feedwater systen at Zion 1 and 2, we find that additional information indicated in the enclosure is necessary. Please provide this information within 30 days of receipt of this letter.
Sincerely, Original signed by:
- s. A.
'tr:a Steven A. Varga, Chief Operating Reactors Branch #1 Division of Licensing
Enclosure:
As stated cc w/ enclosure:
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Mr. Louis 0. De1 George Commonwealth Edison Company cc: Robert J. Vollen, Esquire 109 North Dearborn Street Chicago, Illinois 60602 Dr. Cecil Lue-Hing Director of Research and Development Metropolitan Sanitary District of Greater Chicago 100 East Erie Street Chicago, Illinois 60611 Zion-Benton Public Library District 2600 Emmaus Avenue Zion, Illinois 60099 Mr. Phillip P. Steptoe Isham, Lincoln and Beale Counselors at Law One First National Plaza 42nd Floor Chicago, Illinois 60603 Susan N. Sekuler, Esquire Assistant Attorney General Environmental Control Division 188 West Randolph Street, Suite 2315 Chicago, Illinois 60601 U. S. Nuclear Regulatory Commission Resident Inspectors Office 105 Shiloh Blvd.
Zion, Illinois 60099 f
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i REQUEST FOR ADDITIONAL INFORMATION ON SEISMIC QUALIFICATION OF THE AUXILIARY FEEDWATER SYSTEM Zion Nuclear Plant Units 1 & 2 Question 1 Provide a schematic sketch of the auxiliary feedwater (AFW) system from suction to discharge, including the following:
(a) Water source (s), heat sink, piping, and all major mechanical equipment.
I (b) Connected branch piping up to and including the second valve which is nornelly closed or capable of automatic closure when safety function is required.
(c) Any branch piping outside the AFW system boundary to a point of three orthogonal restraints if any portion of the branch piping is structurally coupled to the AFW system boundary such that the seismic response of the branch line transmits loads to the AFW system.
(d) All structures supporting or housing the AFW system components.
Identify any connected branch piping associated with the AFW system that does not fully meet the boundary requirements specified in itens (b) and (c) above.
Indicate the Seismic Categcry 1 items and boundaries on the sketch. Justify the acceptability of any deviations.
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