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Thermo-Hydraulic Phenomena Subcommittee Meeting - November 13-14, 2000

ADVISORY COMMITTEE ON REACTOR SAFEGUARDS
THERMAL-HYDRAULIC PHENOMENA SUBCOMMITTEE MEETING:
GENE TRACG THERMAL-HYDRAULIC CODE
NRC RES T/H RESEARCH PROGRAM
NOVEMBER 13-14, 2000
ROCKVILLE, MARYLAND

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

TOPICAL AGENDA

  TOPIC SPEAKER TIME
November 13, 2000
I. Introduction G. Wallis, Chairman 8:30 a.m.
II. GE Nuclear Energy Presentation:    
  TRACG Code (Closed - all or part)
  A. Introduction J. Klapproth 8:45 a.m.
  B. Technical presentation JGM Andersen,
FT Bolger,
CL Heck
   
  • What is TRACG and it's intended application?
  • Licensing requirements
  • Submittals
   
      Approach: CSAU    
      (Stress application rather than generic descriptions)    
  Step Description Application LTR
or Other Reference
 
  1 Scenario Specification Section 2.7  
  2 Nuclear Power Plant Selection Section 2.8  
  3 Phenomena Identification and Ranking Section 3.0  
  4 Frozen Code Version Selection Model LTR, ECP control  
  5 Code Documentation Model LTR, ECP docs.  
  6 Determination of Code Applicability
(Presentation of TRACG models and their applicability)
Sec. 4.1, Qual. & Model LTR  
  7 Establishment of Assessment Matrix
(Summary of TRACG assessment)
Section 4.2  
  8 Nuclear Power Plant Nodalization Definition
(Basis for BWR nodalization and sensitivity studies)
Section 5.2, Qual. LTR  
  9 Definition of Code and Experimental Accuracy
(Summary of PIRT uncertainties)
Section 5.1, Qual. LTR  
  10 Determination of Effect of Scale
(Qualification against full scale BWR plant data)
Section 5.3, Full scale data
  11 Determination of the Effect of Reactor Input Parameters and State Section 6.0
  12 Performance of Nuclear Power Plant Sensitivity Sections 7.0 and 8.0
  13 Determination of Combined Bias and Uncertainty Sections 7.0 and 8.0
  14 Determination of Total Uncertainty
(Confirmation of code uncertainty and demonstration cases)
Sections 7.0 and 8.0
   
  • Concluding Comments
III. NRC Presentation (Open) R. Landry, NRR 6:00 p.m.
 
  • Status of Code Review
  • Future Actions/Schedule Milestones
 
IV. Subcommittee Caucus (Open)   6:30 p.m.
   
  • Follow-on Items for this Issue
  • Future Actions
  • Committee Action
 
V. Recess   6:45 p.m.
November 14, 2000    
VI. Reconvene G. Wallis, Chairman 8:30 a.m.
V. NRC RES Presentation:
T/H Phenomena Research Program
   
  A. Introduction/Overview F. Eltawila/J. Flack, RES 8:40 a.m.
    1. Overview of T/H Research Activities  
    2. Program Status  
     
  • Program Accomplishments to Date
  • Schedule for Completion
  • Canceled/Completed Programs
 
    3. Relationship of Research Programs to Long-Term Needs  
  B. Status of On-Going Research Programs J. Uhle/D. Bessette/
C. Boyd, RES
    1. Code Consolidation  
    2. Code Modeling Research  
     
  • Flow Regime Modeling/Phase Separation @ Tees/Subcooled Boiling
    3. Experimental Programs
     
  • PUMA Test Facilities
  • OSU Test Facilities
  • Rod Bundle Heat Transfer
    4. CFD Program
  C. Concluding Comments F. Eltawila/
J. Flack
2:45 p.m.
VI. Subcommittee Caucus   3:00 p.m.
 
  • Follow-on Items for this Issue
  • Future Actions
  • Committee Action
 
V. Adjourn   3:15 p.m.
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