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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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