ML030730508
| ML030730508 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 03/04/2003 |
| From: | John Hickman NRC/NMSS/DWM |
| To: | |
| References | |
| -RFPFR | |
| Download: ML030730508 (20) | |
Text
,~All Yankee Atomic Electric Company HSA and Classification Meeting with the USNRC March 4, 2003 1
Agenda
"* Introduction van Noordennen
"* Purpose of the Meeting van Noordennen
"*YNPS History and Past Activities Heath
"* HSA/Classification Approach Moon/Darois
"* DQOs/DQAs Identified Moon/Darois
"* Process for MARRSIM Classification Moon/Darois
"* Data Collection Process &
Available Sources Moon/Darois
"* Documentation in LTP Section 2 Moon/Darois
"* Future Meeting Topics/Dates van Noordennen
"* Meeting Summary/Action Items van Noordennen 2
Purpose of Meeting
"- Outline Process Being Applied to Site Classification
"* Review Past Decommissioning Survey Activities Used for Characterization
"* Describe Current HSA Approach
"* Describe the Information to Be Included in the LTP
"* Obtain NRC Feedback 3
YNPS History
"*Achieved Initial Criticality-1i960
"*Began Commercial Operation-1961
"*Upgrade to 600 MWt-1 963
"*Decision to Cease Operations-2/1992
"*Possession Only Status-8/1992
"*Decommissioning Activities-1 992-present
"*Fuel Movement to ISFSI (Began)-6/2002 4
Past Decommissioning Activities m Large Components Removed m Majority of SSCs Disposed of Off-Site
- Significant Remediation and Survey Activities Performed Under Previously Submitted LTP
- Surveys Conducted Based Upon Guidance in:
Li RG 1.86 Li Draft NUREG/CR-5849 i Draft NUREG-1500 5
Past Decommissioning Activities (Con't) 6
Status At Conclusion of Current Decommissioning Phase m Most Structu res Demolished to Grade m VC Removed-Rad Waste Disposal
- Remaining Structures:
u PAB Cubicle Corridor o SFP/IX Pit Li Building Pads: Turbine, Waste Disposal, Service, Warehouse Building, and VC o Shoreline Structures, Training Center, Information Center 7
I HSA/Classification Approach m Use MARRSIM Process, Including DQO/DQA Processes m Catalog/Evaluate Available Data Sources m] Proceduralize Classification Process Based Upon HSA Data
- Delineate Areas With Common History/Operational Impact
- Consider Impacts of Continuing Decommissioning Activities 8
I DQOs/DQAs Identified
", Team Development
"* Identification, Collection and Organization Of HSA Data
"* Evaluation of HSA Data 9
DQO: Identification, Collection and Organization Of HSA Data
", Develop Method and Define Process
", Use Standardized Format for Data Presentation
", Collect Data from All Identified Categories for All Site Areas
", Develop Checklist for Consistent HSA Data Collection 10
DQA: Evaluation of HSA Data
- Defines Data Quality Assessment Process m Develop Technical Basis Document for Quality
"- Develop Quality Standard
"- Evaluate Data Against Quality Standard
"* Document Review of Data Quality 11
MARSSIM Graded Approach for Classification
"- Non-Impacted Areas
"- Impacted Areas "o Class 1 "U Class 2 "U Class 3 12
Process for Classification Established DQO's for HSA Data Collection I
Collect HSA Data from Construction Forward Including Completed Decommissioning Activities H-Create Survey Areas Based on Common History I
DOA Process Applied to Existing HSA Data. Identify Data Gaps Classify Based on HSA Data. Adjust Classification If Sufficient Characterization Data (NUREG/CR-5849 surveys) Available and Adjustment is Justified Considering Survey Density and Measurement Sensitivity Create Survey Units Considering MARSSIM Recommended Size Limitations and Media Type and Configuration 13
Basis for Classification
"*Proceduralized Process
"*Classification Based Upon HSA Data
"*Classification Based on Survey Data Collected Under NUREG/CR-5849 "o Justifies less restrictive classification "o High measurement density Li High quality measurements 14
HSA Data Collection Process
- Steps Included:
u Consideration of Site History (Construction Through Current State of Decommissioning)
Evaluation of Historical Processes u Review of Plant Modifications o Evaluation of Original Site Construction Photos and P&IDs "o Review of Event Reports/Memos and Technical Basis Reports "o Evaluation of Radionuclide Mixture in Area "o Evaluation of Impacts of Ongoing Decommissioning Activities 15
Available Data Sources
"* Decommission Plan
"* Event reports
"* Maps m Characterization Data/Decommissioning Surveys
[ 1993 to present
[ Includes surveys conducted under NUREG/CR-5849 m Interviews/Supervisor Logs/Night Orders
- Information Catalog:
o > 400 site references, o > 100 former YNSD references 16
Examples of Site Construction Photos
--- J 1 o'4 m
17
Documentation in LTP Section 2 m HSA Methodology m Synopsis of HSA Results m Maps of the Site and Initial Survey Area/Unit Boundaries
. Initial Classifications for Survey Areas/Units m Non-Impacted Area Assessment m Radionuclides Present in Su rvey Areas 18
Future Meeting Topics/Target Dates m Dose Modeling 4/2003
- Final Status Survey 5/2003
. Submittal Mechanics 6/2003 19
Meeting Summary & Action Items 20