ML20212M453

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Summary of 860813 Meeting W/Tva & Westinghouse Re Containment Isolation Capability & to Clarify Info Provided in TVA 860530 Submittal.List of Attendees Encl
ML20212M453
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 08/15/1986
From: Joseph Holonich
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
NUDOCS 8608260158
Download: ML20212M453 (5)


Text

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+.....*# 15 AUG 1986 Docket Nos.: 50-327 and 50-328 FACILITY: Sequoyah Nuclear Station, Units 1 and 2 LICENSEE: Tennessee Valley Authority

SUBJECT:

MINUTES OF AUGUST 13, 1986 MEETING TO DISCUSS CONTAINMENT ISOLATION On August 13, 1986, members of the staff meet with representatives of the Tennessee Valley Authority (TVA) and its contractor to discuss the containment isolation at the Sequoyah units. The meeting was held to further clarify the information provided by TVA in its May 30, 1986 submittal. Enclosed is a list of attendees at the meeting.

The meeting centered around a discussion by TVA on containment isolation capability at Sequoyah. Particular attention was paid to isolation capabili-ties of the five lines addressed in the May submittal. These lines are the reactor coolant pump seal injection lines and the normal charging line. In addition, TVA described the other penetrations and identified what type of valves were available to provide isolation. Of importance to the staff was the fact that, with the exception of the four seal-injection lines and the residual heat removal suction and return lines, the remaining lines had an outboard valve which could be isolated via remote manual means or auto-matically on a safety-injection signal. TVA agreed to call these remote manual or automatic valves as containment isolation valves in conjunction with a closed system outside containment. For the four seal-injection lines, TVA noted that there were four needle valves in the lines which could be used

for local, manual isolation or further upstream, there were seal filter valves l which could also be locally, manually isolated. The RHR suction line has two valves inside containment the outermost of which is declared a containment isolation valve.

i As a result of these discussions, TVA agreed to revise its submittal and i address the following:

l (1) Clarify the intent of the original submittal, the difference between the design basis and licensing basis for Sequoyah, and how Sequoyah meets the GDC; (2) Identify the outboard valves on all the ECCS lines as containment l

1 solation valves which are backuped by a closed system; l

l (3) Identify that the four seal-injection lines were capable of being i manually, locally isolated; 8608260158 860815 PDR ADOCK 05000327 P PDR t .

MEETING

SUMMARY

DISTRIBUTION O cket File > NRC Participants NRC PDR J. M11hoan L PDR J. Shapaker NSIC B. J. Youngblood PRC System C. Tinkler PWRf4 Reading File .

J. Holonich Project Manager J. Holonich T. Kenyon M. Duncan K. Hooks OGC-Bethesda J. Partlow E. Jordan B. Grimes ACRS (10)

H. Thompson, Jr.

H. Der, ton J. Taylor B. Hayes

1. Spessard S. Weise, Reg II G. Zech T. Novak T. Alexion T. Kenyon T. Poindexter C. Stahle W. Long B. K. Singh D. Muller TVA0P (3) S. Richardson AR5029 OTHERS bec: Licensee & Service List

g 5 AUG 1986 (4) Identify at least one of the redundant valves in the normal charging line as a containment isolation valve; (5) Identify FCV 63-172 as a containment isolation in addition to those valves currently listed for the RHR return line; and (6) Justify why these "new" containment isolation valves should not be included in the Appendix J leak-rate test, or discuss the provisions for testing certain valves.

TVA also noted that since the Watts Bar design was similar to Sequoyah, the same concern also existed for Watts Bar. The final position of the staff with respect to the acceptability of the above actions will be determined after the staff completes its review of the revised submittal.

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Joseph Holonich, Project Manager PWR Project Directorate #4 Division of PWR Licensing-A cc: See next page l

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l PWR#4 R-A PW - R-A JH fth/mac BJY .. ood 08/ /86 08/l 4

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Mr. S. A. White Tennessee Valley. Authority Sequoyah Nuclear Plant cc:

Herbert S. Sanger, Jr. , Esq. Tennessee Department of Public General Counsel Health Tennessee Valley Authority ATTN: Director, Bureau of 400 West Summit Hill Drive. E 11B 33 Environmental Health Services Knoxville, Tennessee 37902 Cordell Hull Building Nashville, Tennessee 37219 Mr. K. W. Whitt Mr. Michael H. Mobley, Director Tennessee Valley Authority Division of Radiological Health 400 West Summit Hill Drive, E3A8 T.E.R.R.A. Building Knoxville, Tennessee 37902 150 9th Avenue North Nashville, Tennessee 37203 Mr. Bob Faas Westinghouse Electric Corp. County Judge P.O. Box 355 Hamilton County Courthouse Pittsburgh, Pennsylvania 15230 Chattanooga, Tennessee 37402 Mr. Jerry Wills Tennessee Valley Authority SN 1338 Lookout Place Chattanooga, Tennessee 37402-2801 Mr. Donald L. Williams, Jr.

Tennessee Valley Authority 400 West Summit Hill Drive, W10885 Knoxville, Tennessee 37902 Resident Inspector /Sequoyah NPS c/o U.S. Nuclear Regulatory Commission 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379 Regional Administrator, Region !!

U.S. Nuclear Regulatory Commission, 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 l

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ENCLOSURE Attendees at August 13, 1986 Meeting NRC J. Milhoan J. Shapaker B. J. Youngblood C. Tinkler J. Holonich T. J. Kenyon K. Hooks TVA Mike Harding M. Cooper K. Turnbull M. Chattin WESTINGHOUSE T. Andreychek l

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