ML19308B499
| ML19308B499 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/09/1973 |
| From: | Peltier I US ATOMIC ENERGY COMMISSION (AEC) |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001080710 | |
| Download: ML19308B499 (1) | |
Text
Docket No. 50-269 ny gg NOTE FOR FILES TELECON WITH DUKE POWER COMPANY - FUEL DENSIFICATION OCONEE 1 LEAD REVIEW - MAY 9,1973 Hans Schierling, Norm Lauben and I called K. Canady and T. Cotton (Duke) to provide them with our position regarding the B&W fuel densification TAFY calculation.
L&W is to apply a 25% reduction in the TAFY correlation for gap conductance.
This value is to be taken at beginning of life and be a minimum value for the life of the core fuel cycle. B&W can reduce the sorbed gas value from.02 to.01 cc/gm and the clad ID from.3780 to.3773 inches to be consistent with as built values. B&W cannot reduce fuel surface roughness below the 70 microinches value now being used.
B&W cannotuse restructuring of fuel in TAFY.
Using the above B&W must recalculate the limiting linear heat rates for center-line melting, the LOCA and rod ejection accident.
Lased on the analysis Duke is to provide the staff with the limiting heat rates and the resultant tech spec changes to permit 100% power operation at a meeting in Bethesda on May 15, 1973.
Pending satisfactory accomplishment of the above, the 75% power restriction will be lifted by tech spec change in time for Duke to proceed above 75%
power (estimated to be ready May 18th at earliest by Duke).
The staff will continue its dicussions with B&W for future application of TAFY to other plants.
Nh I. A. Pe'itier, Proj ect Manager Pressurized Water Reactors Branch No. 4 Directorate of Licensing cc:
V. Stello R. C. DeYoung A. Schwencer J. Keppler D. Ross
-H.
Schierling I. A.'Peltier (2) j' e
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