ML20198D651
| ML20198D651 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 05/11/1992 |
| From: | Anderson C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Murphy W VERMONT YANKEE NUCLEAR POWER CORP. |
| References | |
| NUDOCS 9205210105 | |
| Download: ML20198D651 (4) | |
Text
.
a MAY 111992 Docket No. 50-271 Mr. Warren P. Murphy Senior Vice President, Ope'ations Vermont Yankee Nuclear Power Corporation RD 5, Box 169 Ferry Road Brattleboro, Vermont 05301
Dear Mr. Murphy:
Subject:
. E'xtrical Distribution System Functional Inspection
.This letter confirms the dates of July 20-24,1992 and August 3-7,1992, for a special electrical distribt. tion system functional inspection' at the Vermont Yankee Nuclear Power Station. A pre inspection visit by the team to the plant site is also scheduled on July 6-9,1992, to review the availability of documents and to gather information for this inspection.
Our plans were discussed with your staff during telephone calls between Mr. Bill Whitmare of your organization and Mr. A. Della Greca of the NRC Region I of5ce.
The inspection will take place at the Vermont Yankee site, in Brattleboro, Vermont where an entrance meeting is scheduled for 1:00 p.m. on July 20,1992. The exit meeting is tentativelu scheduled for 1:00 p.m. on August 7,1992, also at the plant site.
The primary objective of the inspection will be to determine whether the electrical
-distribution, stem (EDS), as designed, installed, and configured at the Vermont Yankee Station is capable of performing its intended functions during all plant operating and accident
- conditions. In addition, an assessment of the engineering and technical support provided to ensure continued operability of the EDS will be performed.
To support the comprehensive scope of this inspection, we request that your staff be prepared
. to provide, on July 6,1992, presentation which addresses, as a minimum, the following areas:
1.
Vermont Yankee's organization, clearly identifying responsibility, accountability, and flow of authority.
2.
Station ac and de distribution systems arrangements.
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920521010b 920511 PDR ADOCK 05000271 G
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2 3.
Lineup of breakers during startup, normal and emergency operation of the plant.
4.
Electrical interlocks and ties to various offsite and onsite power sources.
5.'
Transfer capability of the systems following the loss of normal power sources 6.
. Specific regulatory commitments, if they are unique in nature.
7.
Vermont Yankee's in-house programs for controlling C.xtrical load growth, plant modifications (temporary and permanent), and setpoints of protective relays.
8.
Vermont Yankee's in-house monitoring and self assessment programs, if any.
In addition; we request that Vermont Yankee provide us at the site, on July 6,1992, at least two copies of the documents idemified on the enclosure. Your cooperation with us during this inspection will be appreciated. Should you have any questions regarding this inspection,
_you may contact Mr. Aniello Della Greca at (215) 337-5046 or Mr. William Ruland at.
-(215) 337-5376.
Sincerely, Clifford J. Anderson, Acting Chief.
Engineering Branch Division of Reactor Safety l
4.
Mr. Warren P. Murphy 3
cc w/ encl:
- J.- Weigand,- President and Chief Executive Officer J.' Pelletier, Vice President, Engineering D. Reid, Plant Manager
-J. DeVincentis, Vice President, Yankee Atomic Electric Company L. Tremblay, Senior Licensing Engineer, Yankee Atomic Electric Company J. Gilroy, Director, Vermont Public Interest Resaarch Group, Inc.
G. Iverson, New Hampshire Office of Emergency Management Chief, Safety Unit, Of6ce of the Attorney General, Commonwealth of Massachusetts R. McCandless, Vermont Division of Occupational and Radiological Health R. Gad, Esquire G. Bisbee, Esquire Chairman, Board of Selectmen, Town of Vernon R. Sedano, Vermont Department of Public Service T. Rapone, Massachusetts Executive Office of Public Safety Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
NRC Resident inspector State of New Hampshire, SLO Designee.
State of Vermont, SLO Designee
- Commonwealth of Massachusetts, SLO Designee bec w/ encl:
Region 1 Docket Room (with concurrences)
J. Linville,- ORP E. Kelly, DRP H. Eichenholz, SRI - Vermont Yankee (w/ concurrences and IFS Forms)
N. Perry, SRI - Yankee Rowe
- R. Lobel, OEDO P. Sears, NRR -
W. Butler, NRR RI:DRS F' ORS RI:DRS D
- 1. Greca li aand.
Anderson (0 @ ~
cp 5///92 5/f92 5/ 7/92 OFFICIAL RECORD COPY A:EDSFI.LTR
4
'4.
ENCLO'iURE EDSFI DOCUMENT LIST 1.
Engineering organization charts.
2.
Station one-line diagrams for ac and de systems (4 copies) 3.
P& ids of heating and ventilation (HVAC) systems associated with the electrical-distribution system (EDS).
4.'
P&lDs of the cme gency diesel generators' (EDG) support systems, including fuel, water, lube oil and air starting systems.
5.
Elementary diagrams of major electrical distribution components 6.
Listing of plant calculations.
7.
Engineering calculations and studies pertaining to load control for both onsite and offsite ac sources; short circuit protection; voltage regulation during all modes of operation; degraded bus voltage conditions; protective relayr wttings; relay / breaker coordination; electrical penetration sizing and protection; equipment sizing, battery sizing; cable ampacities; load profiles; and EDG loading.
' 8.
Engineering calculations and studies related to the HVAC of EDS equipment areas.
9.
Engineering calculations and studies pertaining to the EDG fuel, cooling, and air
. tarting capacity and requirements.
10.
Engineering calculations and manufacturers' pump curves for major EDG loads.
11.
Engineering data related to the EDG excitation and control power and to the engine brake horsepower requirements.
12.
Listing of plant _ permanent and temporary modifications affecting the EDS.
'13.
Packages of significant modifications pertaining to the EDS or to the process systems with signaicant impact on the EDS performed during the last 5 years.
14.
Listing of procedures and specifications relating to Engineering, Operations, and Maintenance.
15.
Procedures and guidelines related to the design and to the design change control process.
16.
Procedures and results for the last two surveillance tests of the EDG, batteries, and representative safety related circuit breakers (air and molded case type) and protective relays.
!7.
- LERs and a listing of NCRs, related to the EDS, which were issued during the last
. three years.
18.
Scif assessment reports and QA audits in the engineering and technical support area for the last three years.
Note: For ease of reference, the documents should be appropriately labeled.
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