ML20115E915
| ML20115E915 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/17/1985 |
| From: | Owen W DUKE POWER CO. |
| To: | Adensam E, Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| GL-84-04, GL-84-4, NUDOCS 8504190326 | |
| Download: ML20115E915 (2) | |
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DUKE POWER GOMPANY
. PowEn BuzLntwo, Box 03180, CHARLOTTE, N. G. 28242 DOW 373-4t2O W M OWEN gatewTevt v4g pets.gart April 17, 1985
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.co..oce oeve-Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention:
Ms. E. G. Adensam, Chief Licensing Branch No. 4 Re: Catawba Nuclear Station, Unit 2 Docket No. 50-414
Dear Mr. Denton:
By letter dated December 20, 1983, Duke Power Company (Duke) requested NRC approval for application of the " leak-before break" concept to Catawba Unit 2 to eliminate postulated breaks from the structural design basis.
In support of that request and in response to_ Generic Letter 84-04, on May ll, 1984, Duke Power Company requested a partial exemption from the requirements'of 10 CFR 50, Appendix A, General Design Criteria (GDC) 4.
As a result of recent meetings, it appears that the NRC Staff is now. prepared to
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grant limited exemptions to GDC 4.
Since certain aspects of our previous requests go beyond the scope of the limited relief contemplated by the Staff, we would-like to modify our previous request as follows:
1.
As discussed in the December 20, 1983 letter, implementation of the leak-before-break concept would allow, inter alia, the elimination of the need to consider the effects of previously postulated primary loop breaks on the reactor. cavity and subcompartment pressurization. While we still consider this relief to be justified, such relief is no longer requested but will be pursued during rulemaking on GDC-4.
2.
By letter dated May 11, 1984, Duke requested a partial exemption to GDC-4.
Granting of this exemption, as requested, would have been for the life of'the facility. With the NRC now pursuing a change to GDC-4 through the rulemaking process, the lifetime exemption may not be necessary. -Therefore it is requested that the previously requested partial exemption to GDC-4 be granted for the first two cycles of operation for Catawba Unit 2.
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'i' Mr. Harold R. Danton, Director April 17, 1985 Page Two As discussed in our May 11, 1984 submittal, approval of the " leak-before break" concept for Catawba Unit 2 would have a significant favorable impact on the -facility by reducing the ' cost of the unit and by reducing occupational radiation exposure. With this request pending now for over 15 months, it is requested that the NRC Staff act expeditiously-in approving'the requested
! relief.
Very truly yours,.
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W. H. Owen ROS/mj f cc:
Dr. J. Nelson Grace, Regional Ad.ninistrator U. S. Nuclear Regulatory Commission Region II
.101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 NRC Resident Inspector Catawba Nuclear Station
. Palmetto Alliance 2135 Devine Street Columbia, South Carolina 29205 Mr. Jesse L. Riley Carolina Envir'onmental Study Group 854 Henley Place Charlotte, North Carolina 28207 Robert Guild, Esq.
P. O. Box 12097 Charleston, South Carolina 29412
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