ML20128M248

Summary of ACRS Qualification Program for Safety-Related Equipment Subcommittee 850506 Meeting in Washington,Dc Re NRC Research Program for Equipment Qualification & Plant Aging

ML20128M248
Person / Time
Issue date:	05/13/1985
From:	Advisory Committee on Reactor Safeguards
To:	Advisory Committee on Reactor Safeguards
References
ACRS-2310, NUDOCS 8507110629
Download: ML20128M248 (4)

Text

.' fMS- 23/b S Pa4 66J/fs' f

[ ) DATE ISSUED: 5/13/85 6[30ff[ MINUTES /

SUMMARY

OF THE QUALIFICATION PROGRAM FOR SAFETY RELATED EQUIPMENT SUBCOMMITTEE MEETING MAY 6, 1985 WASHINGTON, DC Purposes:

The purpose of the meeting was to discuss the NRC Research Program for Equipment Qualification and Plant Aging. A short briefing on fire protection research was also given.

Meeting Attendees:

ACRS NRC STAFF C. Wylie, Chairman J. Richardson C. Michelson, Member B. Morris G. Reed, Member G. Weidenhammer D. Ward, Member W. Farmer A. J. Cappucci, Staff

• J. Vora D. Datta

• Designated Federal Official Highlights, Agreements, and Requests

1. Mr. Michelson questioned the RES Staff as to environments outside containment caused by fires, floods, pipe breaks, inadvertent actuation of fire protection equipment, etc. The Staff indicated that environments outside of containment are under evaluation. l They indicated that if during their evaluation a history of equipment failures in certain environments could be established, they would evaluate specifying a new environment. However, it is not part of the RES Equipment Qualification Program to specify anything other than the current design basis environments. l l

I

2. Mr. Ward asked the RES Staff if they were planning to redefine the  ;

radiation environment due to work underway related to source term phenomena. The RES Staff indicated that they hoped to use this l l

8507110629 850513 I PDR ACRS 2310 PDR

o' May 6, 1985 QPSRE Meeting Minutes l work to determine an envelope for qualifying equipment. They would l take this envelope and compare it to the current upper limit to determine if changes were required for present criteria such as f that specified in Regulatory Guide 1.89. Dr. Morris also pointed out that this work would be highly dependent on work underway by other people on source term. The Equipment Qualification Research Program would not define the source term.

3. Following additional questions by Mr. Ward, the RES Staff indicated that the double ended guillotine break under reevaluation by NRC was not presently making any difference as far as containment environments for electrical equipment qualification were concerned, and probably would not change in the future. It was also suggested , I that an investigation of this issue would be needed when the " dust settles" on the pipe break issue.

4. During discussion related to research on synergisms (ie: pressure, temperature, and radiation). Mr. Michelson suggested that research should be performed evaluating the dynamic effects on valve operation such as the ability of a valve to close under blowdown loads. Dr. Morris indicated that the dynamic effects issue would be evaluated.

5. During discussions related to the performance evaluation of electrical equipment during severe accidents, Dr Morris pointed out that this work is part of a larger program (Severe Accident Research Program) involving containment failure modes and a number of ancillary issues. He explained that in order to make decisions concerning severe accidents, ie: emergency planning, there would be certain instrumentation, controls and equipment which would be needed such as radiation monitors, containment fan coolers, etc.

^ - . _ .

J QPSRE Meeting Minutes May 6, 1985

6. Dr. Farmer indicated that two documents in the form of NUREGs would be available to the Subcomittee during the sumer of 1985. One document is the integrated equipment qualification program plan and the other is a sumary of the research performed over the last six or seven years related to environmental electrical equipment qualifications.

7. Mr. Richardson, RES, responded to previous questions raised by the Subcommittee related to the operation of valves under dynamic conditions. He indicated that planning would be carried out to include the ability of containment isolation valves to isolate upon demand. He also indicated that resources would be set aside to examine the ability of valves to isolate against blowdown loads inside or outside containment.

8. In response to Subcommittee questions, the RES staff pointed out that plant aging research is directed at examining components to determine what parameters should be monitored to identify early failure modes for general classes of equipment.

9. Dr. Vora explained the working definition of aging for the Plant Aging Research Program. He stated that it is used to present the cumulative degradation in time occurring within a component, a structure or a system which, if unchecked, may result in a loss of function and impairment of safety.

10. A brief presentation was given by Dr. Omar Datta, RES staff, on the RES fire protection program. He discussed the four elements of the program which included fire source characteristics, fire environment determinations, fire failure thresholds, and control room habitability and fire safety studies.

,g b QPSRE Meeting Minutes May 6, 1985 NOTE: Additional meeting details can be obtained from a transcript of this meeting available in the public document room, 1717 H Street, N.W., Washington, D.C., or can be purchased from ACE-Federal Reporters, 444 North Capital Street, Washington, D.C. 20001, (202) 347-3700.

. - . . - - _ - _ _ , . - _ _ - . ._ . - . - . . .. . - . . - . - _ .