ML19317F344
| ML19317F344 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 12/22/1972 |
| From: | Desiree Davis US ATOMIC ENERGY COMMISSION (AEC) |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8001100717 | |
| Download: ML19317F344 (2) | |
Text
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UNITED STATES
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DEC 2 21972 QOTETOFILES The attached preliminary request for additional information concerning Duke Power Company's decision to install flow limiters on Oconee 1, 2 and 3 was transmitted by telecopier to B&W at Duke Power's request on December 21, 1972. A tentative date for presentation of this information to the AEC was set for January 4, 1973.
Since B&W is recommending this modification to all their customers, they were asked to advise their customers to contact the appropriate Licensing Project Manager when a decision had been made on B&W's recommendation. This information request supplements that made b-A. Schwencer on December 20, 1972 and documented by note to files.
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Donald K. Davis Pressurized Water Reactor Branch No. 4 Directorate of Licensing
Attachment:
Preliminary request cc: RCDeYoung DFKnuth DFLange SSPawlicki VStello JBHenderson PWR-4 Project Managers m
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ADDITIONAL INFORMATION REQUIRED'FOR REVIEW OF CFT N0 Mechanical-Materials Information I.
Description of design a.
b.
Description of materials involved c.
Design basis (1) loadings (2) thermal stress (3) fatigue life of nozzle (# of cycles)
Installation procedure (compliance with codes & standards) d.
II.
Reactor Safety Information Drawing of orifice Methods of determination of a factors for both forward and backward a.
flow (commitment to test program icr verifing CFT injection rate) b.
Calculation $of the postulated accident using all appropriate models c.
as discussed in previous meetings (1) Pressure and w:.ter level in vessel versus time (2) Vent Valve and break flow versus time (3) Peak Clad temperature versus time Downcomer density and veelocity versus time (4)
(5) Axial heat transfer coefficients for hot rod versus time (a) Use three axial peaking profiles (bottom, cosine, and top peak)
(b) Details of heat transfer correlations used Details of all CRAFT models and heat up models used for these (6) analyses Show the effect of the changed CFT injection rate (k factors) from d.
II. b. on the calculations presented in BAW-10034, Revision 3.
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