Decay Heat Removal Capability (Generic Letter 80-53)
GL80053 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 June 11, 1980 MEMORANDUM FOR: Thomas M. Novak, Assistant Director for Operating Reactors Division of License, NRR Gus C. Lainas, Assistant Director for Safety Assessment Division of Licensing, NRR FROM: Darrell G. Eisenhut, Director Division of Licensing, NRR SUBJECT: GENERIC LETTER CONCERNING DECAY HEAT REMOVAL CAPABILITY Attached is a generic letter to all operating PWR's which requests licensees to amend the Technical Specifications (TS) for their facilities concerning decay heat removal capability. Also attached are model TSs for each of the three PWR vendor types of plants. The letter, with the appropriate version of the model TSs should be sent to licensees by each Operating Reactor Branch within the next week. The estimated total manpower expenditure for review of submitted TSs is 0.1 manyear per reactor site or about 5.0 manyears. The lead engineer assigned is Daniel Garner, (Room 334, ext. 27435). He will initiate TACS for all facilities and will forward sheets to Project Managers for completion. Darrell G. Eisenhut, Director Division of Licensing, NRR Attachments: As stated . UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 TO ALL OPERATING PRESSURIZED WATER REACTORS (PWR'S) Gentlemen: This letter transmits the request that you amend the Technical Specifications (TSs) for your facility with respect to reactor decay heat removal capability. The basis for our request is founded in a number of events that have occurred at operating PwR facilities where decay heat removal capability has been seriously degraded due to inadequate administrative controls utilized when the plants were in shutdown modes of operation. One of these events occurred at the Davis-Besse, unit No. 1 plant on April 19, 1980, which was described in IE Information Notice 80-20 dated May 8, 1980. In IE Bulletin 80-12 dated may 9. 1980, you were requested to immediately implement administrative controls which would ensure that proper means are available to provide redundant methods of decay heat removal. While the function of the bulletin was to effect immediate action with regard to this problem, we consider it necessary that an amendment of your license be made to provide for permanent long terms assurance that redundancy in decay heat removal capability will be maintained. You are requested to propose TS changes for your facility that provide for redundancy in decay heat removal capability for your plant(s) in all modes of operation. To assist you in preparing your submittals we have enclosed a copy of Model TSs which would provide an acceptable resolution of our concern. Your proposal should use the enclosure as a guide and should include an appropriate Safety Analysis as a basis. It is requested that you submit your proposed TSs with the basis within 120 days of receipt of this letter. If you have any questions about this matter, please contact your Project Manager. Sincerely, Darrell G. Eisenhut, Director Division of Licensing Enclosure: Model TSs concerning Decay Heat Removal Capability
Page Last Reviewed/Updated Tuesday, March 09, 2021
Page Last Reviewed/Updated Tuesday, March 09, 2021