NRC Generic Letter 1981-30
| ML031110033 | |
| Person / Time | |
|---|---|
| Issue date: | 07/31/1981 |
| From: | Eisenhut D G Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| GL-82-026 GL-81-030, NUDOCS 8112170381 | |
| Download: ML031110033 (1) | |
v~ it ftrak :B EQ UNITED STATESNUCLEAR REGULATORY COMMISSION5 iWASHINGTON, D. C. 20555July 31, 1981TO ALL BWR LICENSEESGentlemen:SUBJECT: SAFETY CONCERNS ASSOCIATED WITH PIPE BREAKS IN THE BWR SCRAMSYSTEM (GENERIC LETTER NO. 81-30)(PREVIOUSLY ISSUED JULY 7, 1981 AS GENERIC LETTER 8r-26 IS NOWIDENTIFIED AS 81-30)Our letter of April 10, 1981 forwarded draft NUREG-0785 (same subject) andrequested a generic reply within 45 days of receipt. General ElectricCompany submitted a generic response on behalf of the BWR licensees byletter dated April 30, 1981.The staff has completed its review of the generic evaluation prepared byGE. NUREG-0803 "GENERIC SAFETY EVALUATION REPORT REGARDING INTEGRITY OFBWR SCRAM SYSTEM PIPING" dated June 1981 is in the final editing phase andis now planned for publishing in late July 1981. This report will provideguidance to individual licensees in answering the plant specific requestcontained in our April 10, 1981 letter.Since the original time allowed for plant specific responses will expireon or about the time you receive the staff's guidance, we are herebyextending the time allowed to submit the plant specific information requestedin our April 10, 1981 letter. This extension of time is warranted based onour finding that the analyzed sequence of events is not a dominant contributorto core melt. However, the assumptions made in the risk assessmentsupporting this conclusion must be confirmed with plant specific information.Therefore, plant specific responses conforming to the guidance contained inNUREG-0803 should be provided within 120 days of your receipt of the NUREGguidance.Sincerely,> Darrell G. Eisenhut, DirectorDivision of LicensingOffice of Nuclear Reactor Regulationcc: Service List8112170381 8107531PDR NUREGQ qz0803 C Ono, M9n