ML111880064
| ML111880064 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 07/07/2011 |
| From: | Diane Jackson NRC/RGN-I/DRP/PB5 |
| To: | |
| Jackson, D E RI/DRP/PB5/610-337-5306 | |
| References | |
| Download: ML111880064 (13) | |
Text
Millstone NEAC Meeting Millstone Power Station Safety Performance in 2010 U.S. Nuclear Plant Safety in light of Japan Events 2010 Reactor Oversight Process Nuclear Regulatory Commission - Region I 1
NRC Representatives
- Jim Clifford - Deputy Director, Division of Reactor Projects
- Don Jackson - Branch Chief
- Don Jackson - Branch Chief
- Steve Shaffer - Senior Resident Inspector
- Brian Haagensen - Resident Inspector
- Jim Krafty - Resident Inspector 2
Agenda
- Introduction
- Discussion of Millstone safety performance
- Discussion of U.S. nuclear plant safety in light of Japan events
- NRC to address public questions
- Closing remarks 3
- Dominion operated Millstone safely and in a manner that preserved the public health and safety and protected the environment.
NRC Assessment Summary
- Licensee response column of the Action Matrix
- Baseline inspections planned for 2011 based on 2010 assessment. However, a reactive inspection was conducted due to a plant event in February 2011 4
- 8258 hours0.0956 days <br />2.294 hours <br />0.0137 weeks <br />0.00314 months <br /> of inspection and related activities
- 3 resident inspectors on site - residents perform inspections daily and can respond to plant events at any time Inspection Activities in 2010 events at any time
- 16 regional inspections
- 3 major team inspections Problem Identification & Resolution Triennial Fire Protection Emergency Preparedness Exercise 5
- All Green Performance Indicators January 1 through December 31, 2010 Performance Indicator and Inspection Results
- 16 Green/Severity Level IV inspection findings
- No greater than green/severity level IV inspection findings 6
NRC Action Matrix Licensee
Response
Regulatory
Response
Degraded Cornerstone Multiple Repetitive Degraded Cornerstone Unacceptable Performance All Inputs are Green; Cornerstone Objectives Fully Met 1 or 2 White Inputs; Cornerstone Objectives Fully Met 2 White or 1 Yellow Input; Cornerstone Objectives Met w/
Moderate Multiple Yellow Inputs or 1 Red Input; Cornerstone Objectives Met w/
Significant Overall Unacceptable Performance; Plants not permitted to Increasing safety significance Increasing NRC inspection efforts Increasing NRC/Licensee management involvement Increasing regulatory actions Fully Met Fully Met Moderate Degradation in Safety Performance Significant Degradation in Safety Performance permitted to Operate w/in this Column; Unacceptable Margin to Safety
Millstone Power Station was operated safely Licensee Response column of the Action Matrix Baseline inspections planned for 2011 based on 2010 assessment.
2010 Millstone Assessment Summary Baseline inspections planned for 2011 based on 2010 assessment.
However, a reactive inspection was conducted due to a plant event in February 2011 8
Millstone Assessment Meeting U.S. Nuclear Plant Safety in Light of Japan Events 9
U.S. Nuclear Plants Remain Safe
- NRC requires plants to be designed to withstand external events
- NRC requires a defense-in-depth approach to NRC requires a defense in depth approach to safety
- NRC performs independent safety inspections
- NRC assesses new safety information and requires improvements 10
Designed for Site Specific Natural Events
- Tsunamis
- Hurricanes
- Floods
- Tornadoes 11
The NRC Requires Defense-In-Depth
- Redundant and diverse safety systems
- Multiple physical barriers to
- Multiple physical barriers to contain radioactive material
- Testing and inspection of systems important to safety
- Emergency planning 12
NRC Independent Safety Inspections Reactor Oversight Program
- NRC inspectors have unfettered access to all plant activities related to nuclear safety and security
- At least two full-time NRC resident inspectors at each nuclear plant
- NRC specialists conduct additional inspections at each nuclear plant 13
NRC Requires Safety Improvements NRC assesses new safety information, develops lessons learned, and requires safety enhancements:
- NRC operating experience program 14
- Rulemaking (Station Blackout)
- Post TMI Actions
- Post 9/11 Orders
- Generic Safety Issues
NRC Response to Events in Japan
- NRC conducting a methodical and systematic review
- Near-term actions (<90 days) conducting additional 15
- conducting additional inspections
- identifying near term operational issues
- Longer-term actions
Questions 16
Contacting the NRC
- Report a safety concern
- 1-800-695-7403
- allegation@nrc.gov
- General questions
- www.nrc.gov
- Region I Public Affairs
- Diane Screnci, 610-332-5330 or diane.screnci@nrc.gov
- Neil Sheehan, 610-332-5331 or neil.sheehan@nrc.gov 17