ML19329A634
| ML19329A634 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 04/11/1973 |
| From: | Peltier I US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001070652 | |
| Download: ML19329A634 (2) | |
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r APR 1 1 1973 Docket No. 50-269 R. C. DeToung, Assistant Director for Pressurized Water Reactors, L A. Schwencer, Chief, Pressurized Water Reactors Br. No. 4, L THRU:
MD. TING WITH BABCOCK & WILC0K ON FUEL DENSIFICATION - 4/6/73 OCONEE 1 I attended another meeting of the staff's fuel densification task The discussion force on Oconee Unit I with B&W and Duke Power Company.
was mainly technical but resulted in the following highlights.
e The staff does not accept the B&W models for clad collapse and I
1.
gap conductance. These positions were made known to Duke and B&W prior to the meeting.
2.
The staff is prepared to take the name position on Oconee Unit 1 as it did on Maine Tankee - namely that fuel collapse vill not take place during the first cycle or up to 11,000 full power hours. Oconee Unit 1 first cycle is 7,500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />. However, the B&W model requires extensive extrapolation for application to a second or third cycle and is unacceptable.
3.
B&W took the position that it needs a letter from the AEC stating the minimum number of hours for fuel collapse that is acceptable.
The staff should complete its review on the basis of what is now in the record. Nothing is to be gained by additional changes to what has already been submitLJ. B&W will continue to work with the staff in developing conservative models for future application.
4.
The staff will not accept TAFY as a Eap conductance model with the contact term included. The staff agrees that TAFT is more conservative than CAPCON when the contact term is not applied.
The staff wants several days to review gap conductance further in light of information presented at the meeting.
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R. C. DeYoung APR 11 1973 5.
The target date for completing the review is still May 1, 1973.
The LPM again pointed out the implications of a slip in this schedule particularly with regard to Oconee Unit I rise to power scheduled for May 4, 1973. If fuel densification is not settled by then the staff will have to reach another interim power position and impose the associated toch spec restrictions.
9 Irving A. Peltier, Project Manager Pressurized Water Reactors Er. No. 4 Directorate of Licensing DISTRIBUTION Docket File PWR-4 Rdg RP Rdg RCDeYoung PWR Branch Chiefs RWKlecker MRosen R0 (3)
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