ML19316A661
| ML19316A661 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 11/10/1972 |
| From: | Peltier I US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001130211 | |
| Download: ML19316A661 (4) | |
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1 0 G72 Docket 1:os. 50-270 and 50-287 R. C. DoTouna,, Assistant Director for Pressurized Water Reactors Directorate of Licensing HEETING WITil DUKE POWER COMPANY MG BABCOCK MiD VILC01 OCONEE UNITS 2/3 ECCS ANALYSIS - NOVEMBER 3,1972 i
Eneioned is a sumary of the. meeting held on Nove=Ler 3,1972 i
vith Duke Power Co=pany and Babcock and Wilcox. An agenda and attendance list are also enclosed.
OriginalSigned by Irving A.Peltier I. A. Peltier, Acting Chief Pressurized Water Reactors Eranch No. 4 Directorate of Licensing Encic;urcs:
1.
Heating Sum:sry I
2.
Hecting Agenda 3.
Attendance List ec w/cncis R. S. Boyd D. Skovholt D. Knuth R. Maccary DISTRIBUTION R. Tedesco Docket (2)
H. Denton RP Reading FWR Branch Chiefs PWR-4 Reading R. W. Klecker IAPeltier M. Rosen ECoulb6urne RD (3) b AEC PDR
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8001130]//
MEETING WITH DUKE POWER COMPANY AND BABC0CK AND WILCOX CO OCONEE 2/3 ECCS ANALYSIS November 3, 1972
SUMMARY
Reflood Model - There was considerabic technical discussion of the dif ferences between the reflood model (REFLOOD) used by B&W on the Oconee B&W stated application and the reflood model (Flood-1) used by the staff.would not make a differe that the differences between the twomodels l
the peak cladding temperatures calculated for the vent valve plants because B&W was g
the influence of the reflooding comes after peak temperatures.
told by the staff that Duke will be asked to recompute peak cladding temperatures for a spectrum of breaks using the CRF model (carryover rate fraction model) in the REFLOOD (B&W) code assuming several core flux shapes.
Core Flood T3nn Break _ - The Duke-B&W core flood line break analysis is at variance with the interim criteria acceptable ECCS analysis model, in B&W was as much as complete flood tank water bypass was not assumed.
advised that it will need to show by analysis that assuming less that complete bypass is technically conservative.
No major problems were surfaced in the discussion Small Break Analysis -
B&W was advised that Duke will be requestgd to analyze ofthisanglysis. break using the same method as used on the 0.3ft break in the 0.5 ft order to provide an overlap point between the small break model and the interim criteria model.
i
HEETI!;G WITH DUKE POWER COMPANY AND BABC02K AND WILCOX COMPANY AGENDA November 3, 1972 1.
Reflood Model and Rates 10:15 - 1:00 p.m.
Quality - Steam Generation Flow Blockage ECCS Initial Conditions Flecht Set - Test 5
}
2.
Core Flood Line Break 2:00 - 4:00 p.m.
Entrainment Assumptions Throw Away of Water 3.
Small Break Analysis 4:00 - 5:00 p.m.
Model Prescription Noding Comparisons I
I i
O MEETI!iG WITH DUKE POWER COMPANY AND BABCOCK AND WILCOX COMPANY a
OCONEE ECCS MEETING ATTENDANCE LIST November 3, 1972 R. V. Straub Babcock & Wilcox K. S. Canady Duke Power Company P. H. Barton Duke Power Company B. Buckley AEC - Licensing T. O. Johnson Babcock & Wilcox g
Babcock & Wilcox J. F. Mallay
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J. E. Mecca Babcock & Wilcox K. C. Shieh Eab ock & Wilcox B. E. Bingham Babcock & Wilcox D. H. Roy Babcock & Wilcox L. R. Pletke Babcock & Wilcox B. M. Dunn Babcock & Wilcox H. Sullivan AEC - Licensing D. F. Ross AEC - Licensing A. Schwencer AEC - Licensing R. Ferguson AEC - Licensing I. Peltier AEC - Licensing H. Schierling AEC - Licensing D. Davis AEC - Licensing B. Buckley AEC - Licensing R. Audetto AEC - Licensing D. Knuth AEC - Licensing V. Stello AEC - Licensing R. Frahm AEC - Licensing C. E. Parks Babcock & Wilcox N. Lauben AEC - Licensing i
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