ML020380688
| ML020380688 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 03/12/2002 |
| From: | Harrison J NRC/NRR/DLPM |
| To: | |
| Harrison J, NRR/DLPM, 415-3199 | |
| References | |
| IEB-01-001, TAC MB2639 | |
| Download: ML020380688 (8) | |
Text
March 12, 2002 LICENSEE: Dominion Nuclear Connecticut, Inc.
FACILITY: Millstone Nuclear Power Station, Unit No. 2
SUBJECT:
SUMMARY
OF JANUARY 24, 2002, MEETING TO DISCUSS THE LICENSEE'S REACTOR PRESSURE VESSEL HEAD PENETRATION NOZZLE INSPECTION PLANS IN RESPONSE TO NRC BULLETIN 2001-01 (TAC NO. MB2639)
This summary refers to the meeting with Dominion Nuclear Connecticut, Inc. (DNC or the licensee) conducted on January 24, 2002, at the U.S. Nuclear Regulatory Commission (NRC) office in Rockville, Maryland. The meeting was open to the public and was held to discuss DNC's plans to inspect the Millstone Nuclear Power Station, Unit No. 2, (MNPS) reactor pressure vessel head penetration nozzles in response to Bulletin 2001-01, Circumferential Cracking of Reactor Pressure Vessel Head Penetration Nozzles, issued by the NRC on August 3, 2001.
The meeting agenda (Enclosure 1) was available to all attendees. The list of attendees is included as Enclosure 2 and a copy of the slides presented by DNC as Enclosure 3. During the public meeting DNC noticed that slides 15 and 16 contained information related to a proprietary process currently being developed by a vendor. Therefore, these slides were replaced with blank pages.
The NRC Project Manager for MNPS provided the following overview:
The nuclear industry has discovered cracked and sometimes leaking reactor pressure vessel head nozzles. Because of the safety significance of this issue, the NRC issued Bulletin 2001-01 that requires licensees to provide a written response including a variety of specific information relevant to this issue. For moderately susceptible plants such as Millstone Unit 2, the bulletin states that an effective visual examination of 100% of the vessel head penetration nozzles may be sufficient to provide reasonable confidence that degradation would be identified prior to posing an undue risk. The purpose of this meeting is to provide DNC the opportunity to explain to the NRC how they can justify examining less than 100% of their nozzles.
DNC followed with their presentation as depicted by their slides. The following major topics were discussed as part of their slide presentation:
- 1) MNPS reactor head overview;
- 2) MNPS response to Bulletin 2001-01 summary;
- 3) Industry experience with effective visual examinations;
- 4) Non-destructive examination (NDE) techniques and equipment
- 5) Probabilistic Risk Assessment (PRA) based contingency plans in the event that nozzle inspections cannot be completed;
- 6) Future inspection plans; and
- 7) Inspection program summary Upon conclusion of DNC's presentation, DNC announced that Framatome prepared a presentation but that it included proprietary information. The public was asked to leave and was invited back for the NRC's closing remarks and for the opportunity to participate in a public question and comment period.
Framatome presented an explanation of their new examination techniques along with a visual depiction of actual inspection data gathered from the industry using the new method. Upon conclusion of Framatome's presentation, the NRC caucused in a separate room to reach a consensus of the information presented. Upon reconvening in the public meeting room, the NRC staff informed DNC that the examination equipment, technology, and methods proposed to be utilized by the licensee in their upcoming outage to inspect the nozzles appear to provide an effective examination. The staff also informed DNC that the PRA statistical analysis they presented did not appear to justify inspecting fewer than 100% of the nozzles. Therefore, the staff continues to expect DNC to perform an inspection of 100% of the nozzles as described by Bulletin 2001-01. DNC stated that they will submit a supplement to their bulletin response to include information provided during their presentation.
Upon conclusion of the meeting, the members of the public in attendance were invited to stay to have their comments or questions addressed by the NRC staff. No members of the public participated and the meeting was adjourned.
John Harrison, Project Manager, Section 2 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-336
Enclosures:
As stated cc w/encls: See next page
- 5) Probabilistic Risk Assessment (PRA) based contingency plans in the event that nozzle inspections cannot be completed;
- 6) Future inspection plans; and
- 7) Inspection program summary Upon conclusion of DNC's presentation, DNC announced that Framatome prepared a presentation but that it included proprietary information. The public was asked to leave and was invited back for the NRC's closing remarks and for the opportunity to participate in a public question and comment period.
Framatome presented an explanation of their new examination techniques along with a visual depiction of actual inspection data gathered from the industry using the new method. Upon conclusion of Framatome's presentation, the NRC caucused in a separate room to reach a consensus of the information presented. Upon reconvening in the public meeting room, the NRC staff informed DNC that the examination equipment, technology, and methods proposed to be utilized by the licensee in their upcoming outage to inspect the nozzles appear to provide an effective examination. The staff also informed DNC that the PRA statistical analysis they presented did not appear to justify inspecting fewer than 100% of the nozzles. Therefore, the staff continues to expect DNC to perform an inspection of 100% of the nozzles as described by Bulletin 2001-01. DNC stated that they will submit a supplement to their bulletin response to include information provided during their presentation.
Upon conclusion of the meeting, the members of the public in attendance were invited to stay to have their comments or questions addressed by the NRC staff. No members of the public participated and the meeting was adjourned.
/RA/
John Harrison, Project Manager, Section 2 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-336
Enclosures:
As stated cc w/encls: See next page DISTRIBUTION:
PUBLIC JZwolinski/TMarsh GMeyer, RGN-I SLong PDI-2 Reading EAdensam AHiser LAbramson OGC JClifford ALee WBateman ACRS JHarrison TSteingass MReinhart TClark JChung DMcCain Accession No. ML020380688 OFFICE PDI-2/PM PDI-2/LA DE/EMCB PDI-2/SC NAME JHarrison TClark WBateman CGratton for JClifford DATE 2/14/02 2/14/02 2/20/02 3/5/02 OFFICIAL RECORD COPY
Millstone Nuclear Power Station Unit 2 cc:
Ms. L. M. Cuoco Mr. P. J. Parulis Senior Nuclear Counsel Manager - Nuclear Oversight Dominion Nuclear Connecticut, Inc. Dominion Nuclear Connecticut, Inc.
Rope Ferry Road Rope Ferry Road Waterford, CT 06385 Waterford, CT 06385 Edward L. Wilds, Jr., Ph.D. Mr. D. A. Christian Director, Division of Radiation Senior Vice President - Nuclear Operations Department of Environmental Protection and Chief Nuclear Officer 79 Elm Street Innsbrook Technical Center - 2SW Hartford, CT 06106-5127 5000 Dominion Boulevard Glen Allen, VA 23060 Regional Administrator, Region I U.S. Nuclear Regulatory Commission Mr. C. J. Schwarz 475 Allendale Road Director - Nuclear Operations and Chemistry King of Prussia, PA 19406 Dominion Nuclear Connecticut, Inc.
Rope Ferry Road First Selectmen Waterford, CT 06385 Town of Waterford 15 Rope Ferry Road Mr. John Markowicz Waterford, CT 06385 Co-Chair Nuclear Energy Advisory Council Charles Brinkman, Manager 9 Susan Terrace Washington Nuclear Operations Waterford, CT 06385 ABB Combustion Engineering 12300 Twinbrook Pkwy, Suite 330 Mr. Evan W. Woollacott Rockville, MD 20852 Co-Chair Nuclear Energy Advisory Council Senior Resident Inspector 128 Terry's Plain Road Millstone Nuclear Power Station Simsbury, CT 06070 c/o U.S. Nuclear Regulatory Commission P.O. Box 513 Mr. D. A. Smith Niantic, CT 06357 Manager - Regulatory Affairs Dominion Nuclear Connecticut, Inc.
Mr. W. R. Matthews Rope Ferry Road Vice President and Senior Nuclear Waterford, CT 06385 Executive - Millstone Dominion Nuclear Connecticut, Inc. Ms. Nancy Burton Rope Ferry Road 147 Cross Highway Waterford, CT 06385 Redding Ridge, CT 00870 Ernest C. Hadley, Esquire P.O. Box 1104 West Falmouth, MA 02574-1104
Millstone Nuclear Power Station Unit 2 cc:
Mr. G. D. Hicks Director - Nuclear Training Dominion Nuclear Connecticut, Inc.
Rope Ferry Road Waterford, CT 06385 Mr. J. Alan Price Vice President - Nuclear Operations - Millstone c/o Mr. David A. Smith Dominion Nuclear Connecticut, Inc.
Rope Ferry Road Waterford, CT 06385
AGENDA NUCLEAR REGULATORY COMMISSION PUBLIC MEETING WITH DOMINION NUCLEAR CONNECTICUT, INC.
MILLSTONE UNIT 2 REACTOR PRESSURE VESSEL HEAD PENETRATION NOZZLE INSPECTION PLANS (re: NRC Bulletin 2001-01, Circumferential Cracking of Reactor Pressure Vessel Head Penetration Nozzles)
Date: Thursday, January 24, 2002 Location: Room O-10B4, USNRC, 11555 Rockville Pike, Rockville, MD Time: 9:00 a.m. to 12:00 noon 9:00 - 9:15 Opening remarks, self-introductions, and brief overview (John Harrison) 9:15 - 11:15 Dominion Presentation Opening Remarks (Alan Price ~5 minutes)
Overview (Steve Scace ~5 minutes)
Summary of Response (Clark Maxson ~10 minutes)
Industry Experience (Clark Maxson ~10 minutes)
Break NDE Methods (Mike Stark ~30 minutes)
NDE Equipment (Dan Slater, FTI ~15 minutes Contingency Plans/PRA (Yehia Khalil ~30 minutes)
Future Plans (Steve Scace ~10 minutes)
Summary (Alan Price ~5 minutes) 11:15 - 11:30 NRC to caucus, re-convene, and provide closing remarks 11:30 - 12:00 Public question and comment period 12:00 noon Adjourn Enclosure 1
MEETING ATTENDANCE LIST Licensee: Dominion Nuclear Connecticut, Inc.
Plant: Millstone Nuclear Power Station, Unit No. 2
Subject:
Meeting to Discuss the Licensee's Reactor Pressure Vessel Head Penetration Nozzle Inspection Plans in Response to NRC Bulletin 2001-01 (TAC No. MB2639)
Date: January 24, 2001 Time: 9:00 a.m Location: NRC Offices, OWFN Room 10-B4 NAME POSITION ORGANIZATION J. Clifford Section Chief NRC/NRR/DLPM/PDI-2 J. Harrison Project Manager NRC/NRR/DLPM/PDI-2 W. Bateman Branch Chief, EMCB NRC/NRR/DE/EMCB A. Hiser Sr. Materials Engineer NRC/NRR/DE/EMCB A. Lee Materials Engineer NRC/NRR/DE/EMCB T. Steingass Materials Engineer NRC/NRR/DE/EMCB J. Chung PRA NRC/NRR/DSSA/SPSB S. Long Risk Analyst NRC/NRR/DSSA/SPSB L. Abramson Sr. Research Statistician NRC/RES/DRAA/PRAB L. Hartz V.P. of Nuclear Engineering Dominion J. A. Price Millstone Site V.P. Dominion H. Fontecilla Regulatory Affairs Advisor Dominion D. Smith Manager of Regulatory Affairs Dominion B. Sharrow Licensing Engineer Dominion S. Scace Engineering Director Dominion C. Maxson Manager of Engineering Dominion Y. Khalil Supervisor of PRA Dominion R. Schonenberg Materials Engineer Dominion M. Stark NDE Level III Dominion D. Schlader Manager of Business Development Framatome ANP M. Hacker UT Level III Framatome ANP M. Murphy Sr. Materials Engineer CCNPP, Inc.
G. Tesfaye Senior Engineer CCNPP, Inc.
R. Hardies Metallurgical Consultant CNS, Inc.
R. Huston Licensing Support Services Principal Enclosure 2