ML20245K343
| ML20245K343 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 08/11/1989 |
| From: | Bournia A Office of Nuclear Reactor Regulation |
| To: | Morris K OMAHA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20245K347 | List: |
| References | |
| TAC-73066, NUDOCS 8908180419 | |
| Download: ML20245K343 (3) | |
Text
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August 11, 1989 Docket No. 50-285
'Mr. Kenneth J. Morris Division Manager - Nuclear Operations Omaha Public Power District 1623 Harney Street Omaha, Nebraska 68102
Dear Mr. Morris:
SUBJECT:
SAFETY EVALUATION ON ELECTRICAL ISOLATION DEVICES INCORPORATED IN THE ANTICIPATED TRANSIENT WITHOUT SCRAMMODIFICATIONS(TACNO.73066)
In the NRC staff's letter, dated December 7,1988, you were notified that the Anticipated Transient Without Scram (ATWS), Rule 10 CFR 50.62, modifications incorporated into the Fort Calhoun Station design were ecceptable with the exception that the isolation devices would require further review. Our December 7, 1988 letter listed the additional information required. By letters dated February 14 and April 19, 1989, you addressed the additional information required, and we have completed our review.
Based on our review of the information you provided, we conclude that the isolaticn devices are qualified and are acceptable for interfacing the safety and non-safety systems related to implementation of the ATWS Rule. You committed to provide information to verify the acceptance criteria for the maximum credible fault test. This is a confirmatory item. Enclosed is our Safety Evaluation addressing our findings of acceptability.
Sincerely,
/s/
Anthony Bournia, Project Manager Project Directorate IV Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/ enclosure:
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August 11, 1989
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i Docket No. 50-285 Mr. Kenneth J. Morris Division Manager - Nuclear Operations Omaha Public Power District 1623 Harney Street Omaha, Nebraska 68102
Dear Mr. Morris:
SUBJECT:
SAFETY EVALUATION ON ELECTRICAL ISOLATION DEVICES INCORPORATED IN THE ANTICIPATED TRANSIENT WITHOUT.
SCRAM MODIFICATIONS (TAC NO 73066) j In the NRC staff's letter, dated December 7, 1988, you were notified that the AnticipatedTransientWithoutScram(ATWS), Rule 10CFR50.62, modifications incorporated into the Fort Calhoun Station design were acceptable with the exception that the isolation devices would require further review. Our December 7,1988 letter listed the additional information required.. By letters dated February 14 and April 19, 1989, you addressed the additional information required, and we have completed our review.
Based on cur review of the information you provided, we conclude that the j
isolation devices are qualified and are acceptable for interfacing the safety and non-safety systems related to irrplementation of' the ATWS Rule. You comr.itted to provide information to verify the acceptance criteria for the maximum credible fault test. This is a confirmatory item. Enclosed is our Safety Evaluation addressing our findings of acceptability.
Sincerely, i
i Anthony Bournia, Project Manager Project Directorate IV Division of Reactor Projects - III -
1 IV, V and Special Projects 3
Office of Nuclear Reactor Regulation Enclostre:
As stated 1
cc w/ enclosure:
See next page l
l
h e
Mr. Kenneth J. Morris' Fort Calhoun Station Omaha' Public Power District Unit No. I cc:
Harry H. Voigt, Esq.
LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Avenue, NW Washington, D.C.
20036 Mr. Jack Jensen, Chairman Washington County Board of Supervisors-Blair, Nebraska 68008 Mr. Phillip Harrell, Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 309 Fort Calhoun, Nebraska 68023 Mr. Charles B. Brinkman, Manager j
Washington Nuclear Operations i
l Combustion Engineering, Inc.
12300 Twinbrook Parkway, Suite 330 Rockville, MD 20852 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Office of Executive Director for Operations.
611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Harold Borchert, Director i
Division of Radiological Health l
Department of Health l-301 Centennial Mall, South j
P.O. Box 95007 Lincoln, Nebraska 68509' Mr. G. R. Peterson, Manager Fort Calhoun Station P. O. Box 399 i
Fort Calhoun, Nebraska 68023 i
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