ML19312D871
| ML19312D871 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 05/01/1980 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | Rubenstein L Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0578, RTR-NUREG-578 NUDOCS 8005050297 | |
| Download: ML19312D871 (2) | |
Text
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.-lIC 400 Chestnut Street Tower II May 1, 1980 Director of Nuclear Reactor Regulation Attention:
Mr. L. S. Rubenstein, Acting Chief Light Water Reactors Branch No. 4 Division of Project Management U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Rubenstein:
In the Matter of the Application of
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Docket Nos. 50-327 Tennessee Valley Authority
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50-328 In respense to NUREG-0578, TMI-2 Lessons Learned Task Force Short-Term Recommendations, Item 2.2.2.b, enclosed is TVA's schedule for implementing the long-term requirements for the Sequoyah Nuclear Plant Technical Support Center (TSC).
Please get in touch with D. L. Lambert at FTS 854-2581 to schedule a meeting with your staff to allow us to present in detail our long-term plans for the TSC. We suggest a meeting date between May 15 and May 22, 1980.
We expect to submit a detailed description of our long-term plans for the TSC before the meeting.
Very truly yours, TENNESSEE VALLEY AUTHORITY l } 2-O,( l h.p +.--c; L. M. Mills, Manager Nuclear Regulation and Safety Enclosure 30 >/
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ENCLOSURE SEQUOYAH NUCLEAR PLANT TECHNICAL SUPPORT CENTER LONG-TERM IMPLEMENTATION SCHEDULE Stage 1 1
i This stage has been completed and was described in L. M. Mills' letter dated October 31, 1979, to L. S. Rubenstein.
Briefly, the TSC data j
handling for this stage includes:
1.
A complete set of as-built drawings in the 1SC 2.
Communication links to the Main Control Room (MCR), Emergency Operations Center (Chattanooga), and the NRC 3.
Radiation monitoring of the TSC 4.
Portable closed circuit television monitoring of the MCR Stage 2 This stage consists of making available in the TSC certain plant key data that would be needed in the event of an accident. This will be accomplished by installing a cathode ray tube (CRT), printer, and trend recorder off each unit's plant computer in the TSC.
This data will be available in real time to TSC employees. This will also provide not only instantaneous values, but historical and trending capability.
The output devices would normally not be activated but could be quickly put into service at any time.
This stage will be completed by De'cember 31, 1980.
Stage 3 This final stage will complete all changes planned for the TSC.
This includes installing a separate digital computer system. This system design will emphasize reliability, analytical capability, human factors, and versatility. The system will include redundant computer processors with one processor ready to take over in the event the primary processor fails. State-of-the-art technology will be used to display information to employees in the TSC such as CRT displays, printers, and video copiers.
The TSC data includes the key plant data and displays to provide a succinct account of the plant status as it pertains to plant safety. This system will also be designed to accommodate offsite data links.
Stage 3 will be completed by December 31, 1981.
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