ML003749772
| ML003749772 | |
| Person / Time | |
|---|---|
| Site: | Boiling Water Reactor Owners Group |
| Issue date: | 09/14/2000 |
| From: | Stephen Dembek NRC/NRR/DLPM |
| To: | Kenny J BWR Owners Group |
| Pulsifer R M, NRR/DLPM, 415-3016 | |
| References | |
| Download: ML003749772 (4) | |
Text
September 14, 2000 Mr. James M. Kenny, Chairman BWR Owners Group PPL, Inc.
2 North Ninth Street M/C A6-1 Allentown, PA 18101
SUBJECT:
BOILING WATER REACTOR OWNERS GROUP DC-MOTOR PERFORMANCE METHODOLOGY (TAC NO. MA9366)
Dear Mr. Kenny:
On August 30, 2000, the NRC staff held a public meeting at the NRC White Flint office with you and other representatives of the Boiling Water Reactor Owners Group (BWROG) to discuss a methodology developed by the BWROG to provide improved predictions of the performance of dc-powered motor actuators used to operate valves in nuclear power plants. The BWROG dc-motor performance methodology is described in Topical Report NEDC-32958, "BWR Owners Group DC Motor Performance Methodology - Predicting Capability and Stroke Time in DC Motor-Operated Valves," (Revision 0, dated March 2000). The BWROG established this proactive effort to develop the updated dc-motor methodology in response to concerns regarding the current industry guidance for predicting the performance of dc-powered motor-operated valves (MOVs).
During the meeting on August 30, BWROG representatives and your contractor (MPR Associates, Inc.) described the purpose of the dc-powered MOV program and discussed the application and validation of the methodology. The BWROG representatives stated that you are not requesting that the NRC staff prepare a safety evaluation on the dc-motor performance methodology at this time. However, the BWROG representatives suggested that a reference to the updated dc-motor performance methodology in an information notice (IN) might be a preferred approach. The NRC staff is considering supplementing IN 96-48 (August 21, 1996),
"Motor-Operated Valve Performance Issues," to alert licensees to the improved guidance on dc-powered MOV motor actuator output similar to the resolution of the ac-powered MOV output issue.
At the end of the meeting, the BWROG representatives indicated that the NRC staff may request a copy of the computer spreadsheet program of the dc-motor performance methodology in a letter to you. Per that discussion, we would appreciate receiving two copies of the computer spreadsheet program for our use and that of our contractor (Idaho National Engineering and Environmental Laboratory) in understanding the application of the BWROG methodology. We understand that the quality assurance process has not been completed for the computer program and, therefore, the NRC staff will not rely on the spreadsheet for evaluations of plant-specific dc-powered MOVs.
Mr. James M. Kenny September 14, 2000 We recognize the significant effort expended by BWROG in developing the dc-motor performance methodology to help resolve the concerns regarding dc-powered MOV motor actuator output. Please contact Thomas Scarbrough at 301-415-2794, if you have any questions on this request.
Sincerely,
/RA/
Stephen Dembek, Chief, Section 2 Project Directorate IV and Decommissioning Division of Licensing Project Management Office of Nuclear Reactor Regulation Project No. 691 cc: See next page
Mr. James M. Kenny September 14, 2000 We recognize the significant effort expended by BWROG in developing the dc-motor performance methodology to help resolve the concerns regarding dc-powered MOV motor actuator output. Please contact Thomas Scarbrough at 301-415-2794, if you have any questions on this request.
Sincerely,
/RA/
Stephen Dembek, Chief, Section 2 Project Directorate IV and Decommissioning Division of Licensing Project Management Office of Nuclear Reactor Regulation Project No. 691 cc: See next page DISTRIBUTION:
PUBLIC PDIV-2 Reading EMEB RF BSheron JStrosnider RWessman SRichards RPulsifer EPeyton EImbro DTerao TScarbrough
- For previous concurrences see attached ORC Accession No: ML003749772 OFFICE EMEB:DE EMEB:DE*
EMEB:DE*
DD:DE D:DE NAME TScarbrough DTerao EImbro RWessman JStrosnider DATE 09/08/00 9/1/00 9/1/00 09/13/00 OFFICE PDI-2/PM PDIV-2/LA PDIV-2/SC NAME RPulsifer EPeyton SDembek DATE 09/06/00 09/01/00 09/13/00 DOCUMENT NAME: C:\\Kenny8-00.wpd OFFICIAL RECORD COPY
BWR Owners Group Project No. 691 cc:
Mr. H. Lewis Sumner Southern Nuclear Company 40 Inverness Center Parkway PO Box 1295 Birmingham, AL 35242 Mr. Carl D. Terry Vice President, Nuclear Engineering Niagara Mohawk Power Corporation Nine Mile Point - Station OPS Bldg/2nd Floor PO Box 63 Lycoming, NY 13093 Mr. George T. Jones PP& L, Inc.
MC A6-1 Two North Ninth Street Allentown, PA 18101 Mr. John Kelly New York Power Authority 14th Floor Mail Stop 14K Centroplex Building 123 Main Street White Plains, NY 10601 Mr. Thomas G. Hurst GE Nuclear Energy M/C 782 175 Curtner Avenue San Jose, CA 95125 Mr. Thomas A. Green GE Nuclear Energy M/C 782 175 Curtner Avenue San Jose, CA 95125 Mr. William H. Bolke COMED 1400 Opus Place, Suite 400 Downers Grove, IL 60515 Mr. J. A. Gray, Jr. Vice Chairman BWR Owners Group New York Power Authority 123 Main Street White Plains, NY 10601 Mr. James W. Langenbach PECO Energy 965 Chesterbrook Blvd MC 62C-3 Wayne, PA 19087 Mr. James F. Klapproth GE Nuclear Energy M/C 706 175 Curtner Avenue San Jose, CA 95125