ML20248E270
| ML20248E270 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 03/24/1989 |
| From: | Milano P Office of Nuclear Reactor Regulation |
| To: | Morris K OMAHA PUBLIC POWER DISTRICT |
| References | |
| RTR-REGGD-01.099, RTR-REGGD-1.099 GL-88-11, NUDOCS 8904120188 | |
| Download: ML20248E270 (3) | |
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March 24, 1939 s.
4' Dscket 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:
RADIATION EMBRITTLEMENT OF REACTOR VESSEL MATERIALS AND ITS INPACT ON PLANT OPERATIONS (GENERIC LETTER N0. 88-11)
The subject Generic Letter required licensees to use the methods described in Revision 2 to Regulatory Guide 1.99 to predict the effect of neutron radiation on vessel materials. The results of this methodology could result in modification of the pressure-temperature limits in the Technical Specifications.
In your response dated October 28, 1988, Omaha Public Power District (OPPD) indicated that the Fort Calhoun pressure-temperature limits had been reanalyzed using the draft version of Regulatory Guide 1.99, Revision 2, and that the revisions to the curves in the Technical Specifications were approved with the issuance of Amendment No. 114. Additionally, OPPD has contracted with Combustion-Engineering for a Low-Pressure-Overpressure Protection (LTOP) analysis to review system hardware and operating procedures. This would allow for setpoint changes which could reduce the likelihood of LTOP challenges.
j Based on the above, the NRC staff finds that the OPPD response to this Generic Letter is acceptable. However, a summary of the results of the LTOP analysis, including any OPPD evaluation of this analysis, is requested upon its completion.
The reporting and/cr recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Sincerely, i
Patrick D. Milano, Project Manager l
Project Directorate - IV I
Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation i
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March 24, 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:
RADIATION EMBRITTLEMENT OF REACTOR VESSEL MATERIALS AND ITS IMPACT ON FLANT OPERATIONS (GENERIC LETTER NO. 88-11)
The subject Generic Letter required licensees to use the methods-described in Revision 2 to Regulatory Guide 1.99 to predict the effect of neutron radiation on vessel materials. The results of this methodology could result in modification of the pressure-temperature limits in the Technical Specifications.
In your response dated October 28, 1988, Omaha Public Power District (OPPD) indicated that the Fort Calhoun pressure-temperature limits had been reanalyzed using the draft version of Regulatory Guide 1.99, Revision 2, and'that. the revisions to the curves in the Technical Specifications were approved with the issuance of Amendment No. 114 Additionally, OPPD has contr6cted with Combustion-Engineering for a Low-Pressure-Overpressure Protection (LTOP) analysis to review system hardware and cperating procedures. This would allow for setpoint changes which could reduce the likelihood of LTOP challenges.
Based on the above, the NRC staff finds that the OPPD resptnse to this Generic Letter is acceptable.
However, a summary of the results of the LTOP analysis, including any OPPD evaluation of this analysis, is requesteo upon its completion.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Sincerely, j
% a. m' Patrick D. Milano, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation ec:
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p MrF Kenneth J.-Morris Fort Calhoun Station Omaha-Public Power District Unit No. 1 E
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Harry H. Voigt, Esq.
LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Avenue, NW :
Washington, D.C.
20036 Mr. Jack Jensen, Dairman Washington County Board
=of Supervisors Blair, Nebraska 68008 Mr. Phillip Harrell, Resident Inspector i'.S. Nuclear Regulatory Comission t'. O. Box 309 Fort Calhoun, Nebraska 68023 1
Mr. Charles B. Brinkman, Manager Washington Nuclear Operations Conbustion Engineering. Inc.
12300 Twinbrook Parkway, Suite 330 '
Rockv111a, MD. 20852 Regional Administrator, Region IV U.S. Nuclear Regulatory Comission Office of Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington : Texas 76011 Harold Borchert, Director
~ Division of Radiological Health Department of Health 301 Centennial Mall, South P.O. Box 95007 Lincoln, Nebraska' 68509 W. G. Gates, Manager Fort Calhoun Station P. O. Box 399 Fort Calhoun, Nebraska 68023 i
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