ML19317E899
| ML19317E899 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/04/1973 |
| From: | Maccary R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001070699 | |
| Download: ML19317E899 (2) | |
Text
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MAY 4 1973 Richard C. DeYoung, Assistant Director for Pressurized Water Resctors Directorate of Licensing SUPPLEEIT TO FDIAL EVALUATION - MECHANICAL DESIGN OF CORE FLOODING N0ZZLE FLOW RESTRICTOR Plant Name: Oconee Nuclear Station Licensing Stage OL Docket nunber 50-269/270/287 Responsible Branch and Project. Manager: PWRll, I. A. Peltier Review Statust Complete The final evaluation - Mechanical of TSAR for the subject plant, which j
was prepared by the Mechanical Engineering Branch, Directorate of O,) b, y Licensing, dated Sept. ember 8,1970 and r 25, 1972, November 29, 1972 and March 2,1973, has been ft.rther revised to ref1 set S
our evalustion of Oconee-1 core flooding nozzle flow restrictor. We conchr with Babcock and Wilcox concerning the adequacy of mechanical j
design of the flow restrictor.
DdginaGigned by (-
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R.11..'.iaccary R. R. Maccary, Assistant Director 4
for Engineering Directorate of Licensing
- cc w/encit S. H. Ilanauer, DRTA J. M. Hendrie L PWR Bracch Chiefs, L J. P. Knight, L I. A. Peltier, L H. L. Bransaar, L S. N. Hou, L cc w/o encl A. Giambusso L W. G. Mcdonald, L Docket No.: 50/269/270/287 L, Reading File I
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Supplement to Oconee-1 Final Evaluation FLOW RESTRICTOR h
.We have reviewed the Mechanical aspects of the flow restrictor in t e core flooding nozzle, including design consideration, fabrication and installation procedures. A section of stainless steel pipe was thickened by weld overlay on its inside surface and then machined This flow restrictor into the designed shape of the flow restrictor,.
replaced the existing thermal sleeve and was installed by welding.
All applicable thermal and flow-induced transient loadings were considered in the stress and fatigue evaluations on the weld and the i-l restrictor design. The applicant states that all applicable require-ments of the ASME Section III Code were met. We find that the use of 1
the ASME Section III Code requirements provides an acceptable basis for design fabrication and installation of the core flooding nozzle flow restrictors for the Oconee 1 Plant.
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