ML20239A200
| ML20239A200 | |
| Person / Time | |
|---|---|
| Issue date: | 08/26/1998 |
| From: | Joshua Wilson NRC (Affiliation Not Assigned) |
| To: | Essig T NRC (Affiliation Not Assigned) |
| References | |
| PROJECT-691 NUDOCS 9809080312 | |
| Download: ML20239A200 (27) | |
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j NUCLEAR REGUL.'ORY COMMISSION WASHINGTON, D.C. 20666 4 001
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August 26,1998 MEMORANDUM TO:
Thomas H. Essig, Acting Chief
)
Generic issues and Environmental Projects Branch l
Division of Reactor Program Management, NRR FROM:
James H. Wilson, Senior Project Manager
/
Standardization Project Directorate M
4 Division of Reactor Program Management, N
SUBJECT:
SUMMARY
OF MEETING HELD ON AUGUST 6,1998, WITH THE BOILING WATER REACTOR OWNERS' GROUP On August 6,1998, the staff held a public meeting with the Boiling Water Reactor Owners' Group (BWROG) at NRC headquarters in Rockville, Maryland to discuss excess flow check valves. A list of attendees and their affiliations is provided as Attachment 1.
The BWROG presented the results of a survey it conducted to collect data conceming design, purpose, use, surveillance, and testing of excess flow check valves (EFCVs) in the existing BWR fleet. The slides used by the BWROG in its presentation are provided as Attachment 2.
The BWROG stated that typically (except for the BWR/6 design, which has very few) there are 90 to 100 EFCVs in a BWR. Many BWR plants use EFCVs as a barrier for containment isolation for small-diameter instrumentation and control (l&C) lines. The staff questioned the use of EFCVs in non-essential lines, noting that while it is acceptable to use weighted check valves in
/[/
non-essential lines, EFCVs are approved as barriers only for essential I&C lines. The BWROG and GE will need to justify why EFCVs are acceptable as a containment barrier for non-essential lines.
Because of the cost (both in time and occupational exposure) and the low risk-significance of
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failure of EFCVs, the industry is interested in reducing the frequency of the operability testing of n
these valves.
l The BWROG summarized the basic design of EFCVs and described various test methods. The staff questioned part of the BWROG's presentation, wherein one vendor's (Chemquip) EFCVs were characterized as leak-tight. The staff also pointed out the problems associated with using audible indication of check valve actuation.
Oyster Creek plans to submit a (TS) change reducing the testing to demonstrate operability so that, rather than testing each refueling outage, only 20% of the EFCVs would be tested each outage, consistent with Option 8 of Appendix J. Other BWR licensees are expected to submit similar TS amendment requests. Although the BWROG has deveoped a position paper on reduced operability testing for EFCVs to provide a basis for individual plant licensing actions, it does not plan to request NRC review. The staff encouraged the BWROG to pursue a more generic approach to the issue of reduction of EFCV operability testing and consider submitting the position paper as a topical report and using Oyster Creek TS change as a lead plant PM
_155 gggpg@EB@0Pchg 9809080312 980826 PDR TOPRP ENVQENE C
.............. _ _ _... _ _ The staff indicated that the proposed Oyster Creek TS amendment would more likely to be found acceptable by the staff if it were to include the following:
closely follow Option B of Appendix J to establish performance rating before reducing the a
frequency for operability testing of EFCVs; bin (group), by valve manufacturer, and conditions of applicaton for various valves; l
propose a basis for acceptability testing, such as flow determination for cut-off (not just audible indication); and distinguish among hydraulic and pneumatic lines.
The BWROG agreed to consider a generic approach for proposed EFCV TS changes, rather than submitting a number of individual plant requests.
Project No. 691 Attachments: As stated I
cc w/atts: See next page Distribution:
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The staff indicated that the proposed Oyster Creek TS amendment would more likeiy to be found acceptable by the staff if it were to include the following:
closely follow Option B of Appendix J to establish performance rating before reducing the a
frequency for operability testing of EFCVs; bin (group), by valve manufacturer, and conditions of application for various valves; l
propose a basis for acceptability testing, such as flow determination for cut-off (not just audible indication); and distinguish among hydraulic and pneumatic lines.
The BWROG agreed to consider a generic approach for proposed EFCV TS changes, rather than submitting a number ofindividual plant requests, Project No. 691 i
1 l
Attachments: As stated l
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LIST OF ATTENDEES AT MEETING WITH THE BWROG HELD IN ROCKVILLE, MARYLAND ON AUGUST 5,1998 NAME AFFILIATION J. Kudrick NRC J. Colaccino NRC R. Lauffer NRC
. J.H. Wilson NRC R. Binz PSE&G M. Bradley GPUN D. Kelly GPUN P.Hanson
,GPUN A. Roderick Alliant Utilities R. Fairfield GE R. Hill GE D. Knecht GE l
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Project No. 691 Boiling Water Reactor Owners Group cc:
Thomas J. Rausch, Chairman W. Glenn Warren Boiling Water Reactor Owners' Group Southem Nuclear / Georgia Power Commonwealth Edison Company E.I. Hatch Nuclear Plant Nuclear Fuel Services PO Box 1295 M/C B052
- 1400 Opus Place,4th Floor ETWill Birmingham, AL 35201 Downers Grove, IL. 60515 Carl D. Terry Dennis B. Townsend Vice President, Nuclear Engineering GE Nuclear Energy Niagara Mohawk Power Corporation M/C 182 Nine Mile Point-2 175 Curtner Avenue PO Box 63 San Jose, CA 95125 Lycoming, NY ~ 13093 Drew B. Fetters Thomas A. Green PECO Energy GE Nuclear Energy Nuclear Group Headquarters Mail Code 182
~ MC 62C-3 175 Curtner Avenue 965 Chestertrook Blvd.
San Jose, CA 95125 Wayne, PA 19087 John Hosmer Commonwealth Edison -
Executive Towers,4th Floor 1400 Opus Place Downers Grove, IL 60515 -
George T. Jones Pennsylvania Power & Light MC AE Two North Ninth' Street Allentown, PA 18101 Lewis H. Sumner -
Southem Nuclear' Georgia Power
. E.1. Hatch Nuclear Power Plant 40 invemess Parkway PO Box 1295 Birmingham,GA 35201 John Kelly New York Power Authority 14th Floor Mail Stop 14K Centroplex Building
- 123 Main Street -
White Plains, NY 10601 he Lm=~=
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