ML20128C306
| ML20128C306 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 11/24/1992 |
| From: | Steven Bloom Office of Nuclear Reactor Regulation |
| To: | Gates W OMAHA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20127F274 | List: |
| References | |
| TAC-M83989, NUDOCS 9212040333 | |
| Download: ML20128C306 (3) | |
Text
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Docket No, 50-285 h v h 24. 1992 D
Mr. td. Gary Gates Division Manager Nuclear Operations Omaha Public Power District 444 South 16th Street Mall Mail Stop 8E/EP4 Omaha, Nebraska 68102-2247
Dear Mr. Gates:
SUBJFCT:
FORT CALHOUN STA110N UNil 1 - IN1ERIM EVALUATION [MERGENCY DIESEL GENERA 10R MAXIMUM TEMPERATURE OPERATING LIMITS (TAC NO. M83989)
The NRC staff has reviewed your request not to change out the emergency diesel generator (LDG) coolant from ethylene glycol / water mixture to water during the summer months.
The request was submitted by you in a Nuclear Safety Evaluation dated July 2, 1992.
The results of the review are documented in the enclosed Science Applications International Corporation (SAIC) Technical Evaluation Report (TER) SAIC-92/6903, " fort Calhoun Station Emergency Diesel Generator Maximum Temperature Operating Limits," dated September 28, 1992.
Based on its evaluation, the staff concurs with the evaluation tay SAIC that there is no need currently to change out the coolant unless the ambient air temperature exceeds 104'I, at which time EDG #1 would be declared inoperable.
Therefore, the licensee can operate the EDGs at fort Calhoun Station with ethylene glycol / water mixture as an engine coolant through the upcoming winter months until the summer of 1993.
At that time, performance tests will be conducted by you if the proper ambient air temperatures (2 95'f) ave reached for conducting a useful EDG performance test.
A final review of the licensee's findings will be necessary af ter the performance tests are conducted.
The issues that will be required to be addressed during the subsequent review are listed in the SAIC interim report 92/6903 enclosed.
Sincerely, ORIGINAL SIGNED BY:
Steven D. Bloom, Project Manager Project Directorate IV-1 Division of Reactor Projects - lil/IV/V Office of Nuclear Reactor Regulation
Enclosure:
SAIC-92/6903 cc w/ enclosure:
See next page NIDOUs DJSIPRURO.j:
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Dock *et No. 50-285 Hr. W. Gary Gates Division Manager - Nuclear Operations Omaha Public Power District 444 South 16th Street Hall Mail Stop 8E/EP4 Omaha, Nebraska 68102-2247
Dear Mr. Gates:
SUBJECT:
FORT CALHOUN STATION UNIT 1 - INTERIM EVALVATION EMERGENCY DIESEL GENERATOR MAX 1HUli TEMPERATURE OPERATING LlHITS (TAC NO. H83989)
The NRC staff has reviewed your request not to change out the emergency diesel generator (EDG) coolant from ethylene glyco 1/ water mixture to water during the summer months.
The request was submitted by you in a Nuclear Safety Evaluation dated July 2, 1992.
The results of the review are documented in the enclosed Science Applications International Corporation (SAIC) Technical Evaluation Report (TER) SAIC-92/6903, " Fort Calhoun Station Emergency Diesel Generator Maximum Temperature Operating Litatts," dated September 28, 1992.
Based on its evaluation, the staff concurs with the evaluation by SAIC that there is no need currently to change out the coolant unless the ambient air temperature exceeds 104*f, at which time EDG #1 would be declared inoperable.
Therefore, the licensee can operate the EDGs at Fort Calhoun Station with ethylene glycol / water mixture as an engine coolant through the upcoming winter months until the summer of 1993.
At that time, perform nce tests will be conducted by you if the proper ambient air temperatures (2 95'F) are reached for conducting a useful EDG performance test.
A final review of the licensee's findings will be necessary after the performance tests are conducted.
The issues that will be required tc be addressed during the subsequent review are listed in the SAIC interim report 92/6903 enclosed.
Sincerely, h
Steven D. Bloom, Project Manager Project Directorate IV-1 Division of Reactor Projects - Ill/IV/V Office of Nuclear Reactor Regulation
Enclosure:
SAIC-92/6903 cc w/ enclosure:
See next page
_~.___.. _ - _ _. _ _ _
e 4
Mr. W. Gary Gates Omaha Public Power District Fort Calhoun Station, Unit No. I cc:
Harry H. Voigt, Esg.
LeBoeuf, Lamb, Leiby & MacRae 1875 Connecticut Avenue, NW Washington, D.C.
20009-5728 Mr. Jack Jensen, Chairman Washington County Board of Supervisors Blair, Nebraska 68008 Mr. Raymond P. Mullikin, Resident inspector U.S. Nuclear Regulatory Commission Post Office Box 309 fort Calhoun, Nebraska 60023 Mr. Charles B. Brinkman, Manager Washington Nuclear Operations Combustion Engineering, Inc.
12300 Twinbrook Parkway, Suite 330 Rockville, MD 20852 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Harold Borchert, Director Division of Radiological Health Nebraska Department of Health 301 Centennial Hall, South Post Office Box 95007 Lincoln, Nebraska 68509 Mr. T. L. Patterson, Manager t
Fort'Calhoun Station Post Office Box 399 fort Calhoun, Nebraska 68023
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