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ACRS Thermo-Hydraulic Phenomena Subcommittee Meeting - October 25-26, 2001

ADVISORY COMMITTEE ON REACTOR SAFEGUARDS
THERMAL-HYDRAULIC PHENOMENA SUBCOMMITTEE MEETING:
DRESDEN/QUAD CITIES NUCLEAR POWER STATION UPRATE REQUEST
OCTOBER 25-26, 2001
ROCKVILLE, MARYLAND

PRESENTATION SCHEDULE

Contact: P. Boehnert (301/415-8065)
(pab2@nrc.gov)

October 25, 2001

TOPIC SPEAKER TIME
I. Opening Remarks G. Wallis, Chairman, 1:00 p.m.
II. Dresden/Quad Cities Power Uprates      
A. Exelon Presentations
    (Open/Closed?)
Exelon/GE Nuclear Energy 1:15 p.m.
1. Introduction
2. Plant Changes to Accommodate Power Uprate(1)
3. Compliance with Regulatory Requirements
     - Hardware Modifications
     - Analyses Performed
     - Impact on Plant Margins
4. Review Issues:
     - Plant Operator Training/Operator Action Times
     - Stability Monitor/Instability Avoidance
     - ATWS Event Response for Uprate Conditions
     - Fuel response for ATWS/Power Excursions
     - Material Degradation Issues (e.g.,IASCC/FAC)
     - Impact on Containment Response/Load Limits
     - Piping Stress Limit
     - Inspection Program
     - Impact of Uprate on Steam Separator/Dryer System
5. ECCS Analyses
     - Results
6. Resolution of Open Issues
    - NPSH Requirements
    - Ultimate Heat Sink
    - ATWS Audit
    - Transient Tests
7. PRA Analysis
    - Analyses Performed/Results (CDF LERF, CDFs & LERFs, Associated Uncertainties(2))
    - Evaluation of Missing PRA Elements(3)(e.g., fire, seismic, shutdown risk)
8. Concluding Remarks
III. Recess      6:00 p.m.
October 26, 2001
IV. Reconvene G. Wallis, Chairman 8:30 a.m.
V. Dresden/Quad Cities Uprate (Cont.)          
   B. NRR Presentations (Open) NRR 8:40 a.m.
      1. Introduction      
    -Staff Evaluation
    -Response to Duane Arnold Review
      2. NRR SER Results/Response to ACRS Questions      
          - Key Staff Review Issues/Review Results
    - Audits of Licensee's Code Calculations
    - Evaluation of Containment Response
    - Evaluation of ATWS Response
    - Material Degradation Issues
    - Impact on Plant Margins
    - PRA Analyses/Evaluation Of Licensee's PRA Examinations
     
      3. Open Issues

      
       4. Concluding Remarks      
   C. Subcommittee Caucus (Open)       12:00 p.m.
      1. Comments on Meeting Presentations   
       2. Follow-on Actions
     
      3. Decision to Bring Review to ACRS     
VI. Adjourn           12:30 p.m.

1. For discussion items 2-7, note differences in plant designs as necessary.

2. If uncertainty evaluations not performed, provide a qualitative discussion of this matter.

3. If quantitative analyses not available, provide rigorous qualitative arguments.

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