ML19296B775
| ML19296B775 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 02/11/1980 |
| From: | Trimble D ARKANSAS POWER & LIGHT CO. |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| IEB-79-05C, IEB-79-5C, NUDOCS 8002210489 | |
| Download: ML19296B775 (1) | |
Text
AAKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 LITTLE ROCK, ARKANSAS 72203 (501) 371-4000 February 11, 1980 1-020-03 Director of Nuclear Reactor Regulation ATTN:
Mr. Robert W. Reid, Chief Division of Operating Reactors Branch #4 U. S. Nuclear Regulatory Connission Washington, D. C.
20555
Subject:
Arkansas Nuclear One-Unit 1 Docket No. 50-313 License No. DPR-51 Automatic Reactor Coolant Pump Trip During Small Break LOCA (File:
1510.1)
Gentlemen:
Your letter, December 18, 1979, provided conceptual approval of a design to trip the reactor coolant pumps automatically using coincident input signals of low RCS pressure and low RCP current / power.
This proposed design was required per IE Bulletin 79-05C.
In addition, your letter requested extensive. justification for correlation of RCP current / power and void fraction as well as justification for the RCP current / power s etpoi nt.
We have reviewed the scope of work required to address the Staff's concerns and nave determined that a review of other RCP trip designs is desirable prior to initiating any analysis effort requested by the Staff.
Following this review, which is expected to be completed by February 29,
~
1980, the Staff will be ddvised of the results of the review and our planned followup actions.
Very truly yours, Davi) 0- (
David C. Trimble Manager, Licensing DCT:DGM:tw QQQ2g} Q g g}
MEMDE A MOOLE SOUTH UTILITIES SYSTEM