ML19319E279
| ML19319E279 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 06/30/1976 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| References | |
| NUDOCS 8004010551 | |
| Download: ML19319E279 (3) | |
Text
{{#Wiki_filter:7, _3 A;. ~. ...f. f.. .S g g u '516 U DISTRIBUTION: -+ Docket File OR6#k M# - t = NRC PDR rb 55 Docket Nd.: 50.312 Local PDR KRGoller/TJCarter 5f? -VStello g r. RIngram
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~..... ~. = Sacramento Municipal UtilityJDistrict Attorney, OELD ATTN:.Mr. J.:J. Mattimoe OISE (3) Assistant General Manager BJones (4) anr* Chief Engineer LScharf (10) 6201 S Street JMcGough ~ P.O. Box 15830 OPA (Clare Miles) Sacran. ento, California 95813 Dross i E TBAbernathy i Gentlemen:' JRBuchanan .j ACRS (16) t Minimum fracture toughness requirements for ferritic materials of C pressure-retaining cortponents of the reactor coolant pressure boundary of water cooled power reactors are specified in 10 CFR Part 50, Appendix.
- j..g G, "Fract.ure Toughness Requirements". This regulation became effective
'i on August 16, 1973 and requires that adequate margins of safety be a4'! provided during any condition of normal operation for the pressure boundary over its service lifetime. These conditions include anticipated operational occurrences and system hydrostatic tests. Many nuclear power plants were in advanced stages of design, construction, or review, or had already received operating licenses at the time Appendix G became effective. It .i was appropriately recognized that these plants would require subsequent' evaluation on a case-by-case basis.for compliance with Appendix G. Consequently, you are requested to review the reactor coolant system pressure-temperature limits contained in the Technical Specifications for your facility to determine if they are in full compliance with Appendix G. Your review should include the pressure-temperature limits for heatup and cooldoun' operations, system hydrostatic testo, and reactor core criticality. If you find. that your pressure-temperature limits in your Technical -Specifications are not in full compliance with Appendix'C, ne request that you propose appropriate changes to your Technical ',ccifications .uithin. 60 days. Sincerely. s Robert ". Reid, Chief Operating Reactors tranch d4 Division of Operating Reactors { [. C-0KBF4 DOR ORB 04 ggQ:. emeu n: VRoone h RReid
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