ML20140D757
| ML20140D757 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 12/14/1984 |
| From: | Tucker H DUKE POWER CO. |
| To: | Adensam E, Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8412190147 | |
| Download: ML20140D757 (2) | |
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b is Duxn POWER GOMPANY P.O. DOX 33189
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CitARLOTrE, N.O. 28242 HALD. TUCKER TrnErnown vna enzament (704) 373-4531 December 14, 1984
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Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commissien Washington, D. C.
20555 Attention: Ms. E. G. Adensam, Chief Licensing Branch No. 4 Re: Catawba Nuclear Station Docket Nos. 50-413 and 50-414
Dear Mr. Denton:
By letter dated June 21, 1984, Duke Power Company submitted a response to SER Open Item, 17, Alarm in the Control Room for Boron Dilution Events in All Modes of Operation.
The proposed resolution included a revised FSAR analysis, a commitment to install redundant source range neutron detector annuciators, and a commitment to maintain the boron concentration in the Reactor Coolant System at or above 2000 ppm during fuel loading and pre-critical testing phases.
License Condition 11 in Facility Operating License NPF-24 required, that in Modes 3, 4 and 5, the boron concentration be maintained at a level such that criticality could not occur even with all rods out.
As discussed in Section 8.3.1 of SSER #3, this requirement was imposed because of the unavailability of the diesel generators during fuel load and pre-critical testing phases.
On October 3, 1984, Duke advised the Staff that the additional so ace range annunciator had been installed.
On December 6, 1984 the NRC issued Facility Operating License NPF-31 which superseded Facility Operating License NPF-24.
This license deleted the waiver for operability of the diesel generators (LC-2), as well as the previous requirement on boron concentration (LC-11a).
With the redundant source range alarm installed and both diesel generators operable, it is our conclusion that our June 21, 1984 coc:mitment to maintain a boron concentration of 2000~ ppm in the Reactor Coolant System is no longer necessary. Henceforth, the Reactor Coolant System boron concentration will be based on the applicable Catawba Unit 1 Technical Specification-3.1.1.1, 3.1.1.2, or 3.9.1.
Very truly yours, b.
//h yb l
Hal B. Tucker i
8412190147 841214
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<.c Mr. Harold R. D;nton, Dirsctor Decemb2r 14, 1984-Page Two ec:
Mr. James P. O'Reilly, Regional Administrator 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 Robert Guild, Esq.
P. O. Box 12097 Charleston, South Carolina 29412 Mr. Jesse L. Riley Carolina Environmental Study Group 854 Henley PJ.ce Charlotte, North Carolina 28207
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