ML20045B919
| ML20045B919 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/17/1993 |
| From: | Labarge D Office of Nuclear Reactor Regulation |
| To: | Medford M Tennessee Valley Authority |
| References | |
| NUDOCS 9306210264 | |
| Download: ML20045B919 (4) | |
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WASHINGTON, D.C. 20555-0001 June 17, 1993 Docket Nos. 50-327 and 50-328 Dr. Mark 0. Medford, Vice President Technical Support Tennessee Valley Authority 3B Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
Dear Dr. Medford:
SUBJECT:
NRC 0FFICE OF NUCLEAR REGULATORY RESEARCH VISIT TO THE SEQUOYAH NUCLEAR PLANT REGARDING THE EAGLE-21 SYSTEM This letter is a follow-up'to conversations with Mr. Jim Smith of your staff regarding a request by the NRC Office of Nuclear Regulatory Research (RES) to visit the Sequoyah Nuclear Plant (SQN) site as part of a research project directed toward implementation of digital systems in nuclear power plants.
The objective of the research program is to assess how digital instrumentation and control equipment is expected to change human actions (particularly those of the operating crew) at nuclear power plants, and to better model these human actions in risk assessment evaluations.
To accomplish this, Sequoyah is being asked to share pertinent insights gained from installation of the Westinghouse Eagle-21 System to replace the original analog-based Reactor Protection System.
RES is particularly interested in learning what changes were made to displays, procedures and training, and the effects the changes had on human factors and equipment reliability.
The results of the discussions will help maintain a realistic basis for developing Probabilistic Risk Assessment (PRA) technology to model the human interface with instrumentation and control systems.
It is desired that the following TVA personnel, as possible, be available for discussions, which should last for approximately 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> each.
Two Senior Reactor Operators, two Reactor Operators, one Shift Technical Advisor, one person involved with the design of the Eagle-21 System, one person involved with implementing the Eagle-21 design, one Operations Engineer, two. training department personnel, one Instrumentation person, one person responsible for software design, and any other personnel that.nay be able to assist is the discussions.
The present schedule indicates that the visit will start on August 24, 1993, with a late afternoon familiarization tour of the plant control room, simulator, and systems.
In addition, since they are planning to discuss a small break Loss of Coolant Accident (LOCA) in the PRA, the visitors have requested a. tour of systems that would be. impacted. by a. LOCA. (e.g., other.
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Dr. Mark 0. Medford equipment associated with the Reactor Protection System, Auxiliary Feedwater System, Emergency Core Cooling System).
Interviews and other fact-finding activities would occur during the next.2 days.
l There will ba four personnel participating in the site. visit.- one from RES and three contractors from the Idaho National Engineering Laboratory.
Personnal information will be supplied separately.
We would appreciate any assistance you can give to this effort to gain a perspective on the installation and implementation of one of the few analog-to-digital conversions that have been performed at an operating nuclear plant.
Sincerely, Original signed by Peter S. Tam for David E. LaBarge, Senior Project Manager Project Directorate II-4 e
Division of Reactor Projects - I/II-Office of Nuclear Reactor Regulation cc: See next page Distribution Docket File NRC & Local PDRs SQN Reading S. Varga G. Lainas F. Hebdon B. C1ayton D. LaBarge J. Wermiel R. Brill, RES OGC ACRS (10)
E..Merschoff, RII P. Fredrickson, RII J. Crlenjak, RII cc:
Plant Service list by telcoryn n
0FC:
PDII-4/LA PDII-4/PM [ RES/HFB*k/ PDII-4/D NAME:
BClayton /k Dt.aBarge b RBrill-FHebdon h,
i DATE:
W '/\\V/93 0 /IG/93 06/15/93 6/11/93i DOCUMENT NAME:
- 3 4
Dr. H
. O. Medford equipmu t associated with the Reactor Protection System, Auxiliary Feedwater System, Emergency Core Cooling System).
Interviews and other fact-finding activities would occur during the next 2 days.
There will be four personnel participating in the site visit - one from RES and three contractors from the Idaho National Engineering Laboratory.
i Personnal information will be supplied separately.
We would appreciate any assistance you can give to
.s effort to gain a perspective on the installation and implementation os one of the few analog-to-digital conversions that have been performed at an operating nuclear plant.
Sincerely, Original signed by Peter S. Tam for David E. LaBarge, Senior Project Manager Project Directorate'II-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation cc:
See next page Distribution Docket File NRC & Local PDRs SQN Reading
- 5. Varga G. Lainas F. Hebdon
'B. Clayton D. LaBarge J. Wermiel R. Brill, RES OGC ACRS (10)
E. Merschoff, RII P. Fredrickson, RII J. Crler.jak, RII cc:
Plant Service list by telconq n
OFC:
PDII-4/LA PDII-4/PM [ RES/HFB* h kPDII-4/D NAME:
BClayton,k DlaBarge N RBrill FHebdonkhk.,,
DATE:
(2 /\\)J/93 6 /lG/93 06/15/93 h/fl/93'[
DOCUMENI NAME:
4 Tennessee Valley Authority Sequoyah Nuclear Plant ATTN:
Dr. Mark 0. Medford CC:
Mr. W. H. Kennoy, Director County Judge Tennessee Valley Authority Hamilton County Courthouse ET 12A Chattanooga, Tennessee 37402 400 West Summit Hill Drive Knoxville, Tennessee 37902 Regional Administrator U.S.N.R.C. Region 11 Mr. R. M. Eytchison, Vice President 101 Marietta Street, N.W.
Nuclear Operations Suite 2900 Tennessee Valley Authority Atlanta, Georgia 30323 3B Lookout Place 1101' Market Street Chattanooga, Tennessee 37402-2801 Mr. William E. Holland Senior Resident Inspector Sequoyah Nuclear Plant Mr. B. S. Sctofield, Manager U.S.N.R.C.
Nuclear Licer. sing and Regulatory.ffairs 2600 Igou Ferry Road Tennessee Va71ey Authority Soddy Daisy, Tennessee.37379 5B Lookout Pi-.;
1101 Market Street.
Chattanooga, Tennessee 37402-2801 Mr. Robert Fenech, Vice President Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, Tennessee 37379 TVA Representative Tennessee Valley Authority 11921 Rockville Pike Suite 402 Rockville, Maryland 20852 Mr. Ralph Shell, Site Licensing Manager Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, Tennessee 37379 Mr. Michael H. Mobley, Director Division of Radiological Health 3rd Floor, L and C Annex 1
401 Church Street Nashville, Tennessee 37243-1532
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General Counsel Tennessee Valley Authority ET 11H 400 West Summit Hill Drive.
Knoxville,. Tennessee 37902'
,