ML20128C256
| ML20128C256 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 11/19/1992 |
| From: | Rood H Office of Nuclear Reactor Regulation |
| To: | Horn G NEBRASKA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20128C259 | List: |
| References | |
| GL-84-09, GL-84-9, TAC-M84046, NUDOCS 9212040313 | |
| Download: ML20128C256 (3) | |
Text
__ _ - - ___ ___._
November 19, 1992
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Docket No. 50-298 Mr. Guy R. Horn Nuclear Power Group Manager Nebraska Public Power District Post Office Box 499 Columbus, Nebraska 68602-0499
Dear Mr. Horn:
SUBJECT:
COOPER NUCLEAR STATION - GENERIC LETTER 84-09, "RECOMBINER CAPABILITY REQUIREMENTS OF IC CFR 50.44 (TAC NO. M84046)
By letters dated June 29, and July 20, 1984, Nebraska Public Power District (NPPD), the licensee for Cooper Nuclear Station (CNS), responded to Generic letter (GL) 84-09. Due to the facility's use of an air containment atmosphere dilution (ACAD) system, the facility was found to not meet the GL 84-09 criteria for consideration as not having a purging /repressurization system as its primary means of combustible gas control.
The facility was therefore considered subject to the recombiner requirement.
NPPD subsequently modified the facility to convert the ACAD system into a nitrogen containment atmosphere dilution (NCAD) system, eliminating the potential post-accident oxygen source. Also, all other potential post-accident sources of oxygen supply to the containment have been eliminated.
The facility thus meets the GL 84-09 criteria.
Our safety evaluation (SE) is enclosed.
This concludes our efforts on TAC No M84046.
Sincerely, ORIGINAL SIGNED BY:
Harry Rood, Senior Project Manager Project Directorate IV-1 Division of Reactor Projects - Ill/IV/V Office of Nuclear Reactor Regulation
Enclosure:
Safety evaluation cc w/ enclosure:
See next page DISTRIBUTION:
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WASHINGTON, D. C. 20$55 k.....p November 19, 1992 Docket No. 50-298 Mr. Guy R. Horn Nuclear Power Group Manager Nebraska Public Power District Post Office Box 499 Columbus, Nebraska 68602-0499
Dear Mr. Horn:
SUBJECT:
COOPER NUCLEAR STATION - GENERIC LETTER 84-09, "RECOMBINER CAPABILITY REQUIREMENTS OF 10 CFR 50.44 (TAC NO. M84046)
By letters dated June 29, and July 20, 1984, Nebraska Public Power District (NPPD), the licensee for Cooper Nuclear Station (CNS), responded to Generic letter (GL) 84-09. Due to the facility's use of an air containment atmosphere dilution (ACAD) system, the facility was found to not meet the GL 84-09 criU ria for consideration as not having a purging /repressurization system as its primary means of combustible gas control. The facility was therefore considered subject to the recombiner requirement.
NPPD subsequently modified the facility to convert the ACAD system into a nitrogen containment atmosphere dilution (NCAD) system, eliminating the potential post-accident oxygen source. Also, all other potential post-accident sources of oxygen supply to the containment have been eliminated.
The facility thus meets the GL 84-09 criteria.
Our safety evaluation (SE) is enclosed.
This concludes our efforts on TAC No. M84046.
Sincerely, l/
4 1
l Harry Rood, Senior Project Manager Project Directorate IV-1 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation
Enclosure:
Safety evaluation cc w/ enclosure:
See next page t
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4 Mr. Guy R. Horn fioclear Power Group Manager Cooper Nuclear Station CC:
Mr. G. D. Watson, General Counsel Nebraska Public Power District P. O. Box 499 Columbus, Nebraska 68602-0499 Cooper Nuclear Station ATTN: Mr. John M. Heacham Site Manager P. O. Box 98 Brownville, Nebraska 68321 Randolph Wood, Director Nebraska Department of Environmental Control P. O. Box 98922 Lincoln, Nebraska 68509-8922 Mr. Richard Moody, Chairman Nemaha County Board of Commissioners Nemaha County Courthouse
- 1824 N Street Auburn, Nebraska 68305 Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 213 Brownville, Nebraska 68321 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Mr. Harold Borchert, Director Division of Radiological Health Nebraska Department of Health r
301 Centennial Mall, South P. O. Box 95007 Lincoln, Nebraska 68509-5007 L