ML111880033
| ML111880033 | |
| 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 | |
| Shared Package | |
| ML110610692 | List: |
| References | |
| Download: ML111880033 (19) | |
Text
Date: July 7, 2011 Re: Millstone Annual Assessment Meeting NRC Slides Attached are the slides that were presented at the Millstone Annual Assessment Meeting.
1
Millstone Assessment 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 2
NRC Representatives
- Jim Clifford - Deputy Director, Division of Reactor Projects
- Don Jackson - Branch Chief
- Steve Shaffer - Senior Resident Inspector
- Brian Haagensen - Resident Inspector
- Jim Krafty - Resident Inspector 3
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 4
NRC Assessment Summary
- Dominion operated Millstone safely and in a manner that preserved the public health and safety and protected the environment.
- 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 5
Inspection Activities in 2010
- 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
- 16 regional inspections
- 3 major team inspections
- Problem Identification & Resolution
- Triennial Fire Protection
- Emergency Preparedness Exercise 6
Performance Indicator and Inspection Results January 1 through December 31, 2010
- All Green Performance Indicators
- 16 Green/Severity Level IV inspection findings
- No greater than green/severity level IV inspection findings 7
NRC Action Matrix Licensee Regulatory Degraded Multiple Repetitive Unacceptable Response Response Cornerstone Degraded Performance Cornerstone All Inputs are 1 or 2 White 2 White or 1 Multiple Yellow Overall Green; Inputs; Yellow Input; Inputs or 1 Red Unacceptable Cornerstone Cornerstone Cornerstone Input; Cornerstone Performance; Objectives Objectives Objectives Met w/ Objectives Met w/ Plants not Fully Met Fully Met Moderate Significant permitted to Degradation in Degradation in Operate w/in this Safety Safety Performance Column; Performance Unacceptable Margin to Safety
- Increasing safety significance
- Increasing NRC inspection efforts
- Increasing NRC/Licensee management involvement
- Increasing regulatory actions
2010 Millstone Assessment Summary
- Millstone Power Station was operated safely
- 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 9
Millstone Assessment Meeting U.S. Nuclear Plant Safety in Light of Japan Events 10
U.S. Nuclear Plants Remain Safe
- NRC requires plants to be designed to withstand external events
- NRC requires a defense-in-depth approach to safety
- NRC performs independent safety inspections
- NRC assesses new safety information and requires improvements 11
Designed for Site Specific Natural Events
- Tsunamis
- Hurricanes
- Floods
- Tornadoes 12
The NRC Requires Defense-In-Depth
- Redundant and diverse safety systems
- Multiple physical barriers to contain radioactive material
- Testing and inspection of systems important to safety
- Emergency planning 13
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 14
NRC Requires Safety Improvements NRC assesses new safety information, develops lessons learned, and requires safety enhancements:
- NRC operating experience program
- Rulemaking (Station Blackout)
- Post TMI Actions
- Post 9/11 Orders
- Generic Safety Issues 15
NRC Response to Events in Japan
- NRC conducting a methodical and systematic review
- Near-term actions (<90 days)
- conducting additional inspections
- identifying near term operational issues
- Longer-term actions 16
Meeting Ground Rules
- 1. Please be respectful to the speaker - only one speaker at a time
- 2. See NRC staff if you have procedural questions/concerns or still want to sign up.
- 3. NRC staff members will be available after the meeting to talk to those interested 17
Questions 18
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 19