ML19309H482
| ML19309H482 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 05/09/1980 |
| From: | Rich Smith VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| References | |
| WVY-80-72, NUDOCS 8005130365 | |
| Download: ML19309H482 (1) | |
Text
_-.
80 0513 0M6f X
) VERMONT YAN KEE NUCLEAR POWER CORPORATION J
SEVENTY SEVEN GROVE STREET RUTLAND. VERMONT 05701 nEnty vo, hVY 80-72 ENGINEERING OFFICE May 9, 1980 TURNPIKE RO AD WESTBORO, M ASSACHUSETTS 01581 TELEPHONE 617 366 901l United States Nuclear Regulatory Commission Washington, D. C.
20555 Attention: Office of Nuclear Reactor Regulation Mr. Thomas A. Ippolito, Chief Operating Projects Branch #2 Division of Project Management
References:
(a) License No. DPR-28 (Docket No. 50-271)
(b) Letter, W. P. Johnson (VYNPC) to the Office of Nuclear Reactor Regulation dated March 17, 1980 (c) Telecon, R. L. Smith and R. F. Scholl on April 17, 1980
Subject:
Recirculation Pump Trip Modification at Vermont Yankee
Dear Sir:
The purpose of this letter is to formally submit additional information concerning the subject modification as discussed with Mr. Scholl of your staff in Reference (c). Mr. Scholl expressed a concern regarding the environmental qualifications of the p ower supplies and inverters to be installed as part of the analog system described in Reference (b). The modification at Vermont Yankee will employ a 24 volt battery system in place of inverters.
Vermont Yankee has specified that the power supplies and batteries for this modification be seismically qualified, Class 1E, and designed to function in the post-accident reactor building environment.
All required documentation will be available at the plant site for NRC review when the modification is complete.
We trust this information will be satisfactory; however, should you have any further questions, please contact us.
Very truly yours, VERMONT YANKEE NUCLEAR POWER CORPORATION R. L. Smith Licensing Engineer RLS/smw l