Multiple pressure tube rupture in channel type reactors. A publication of the extrabudgetary program on the safety of WWER and RBMK nuclear power plants

摘要

A topical meeting on multiple pressure tube rupture analysis in channel type reactors was convened by the IAEA at the RDIPE in Moscow from 31 January to 4 February 1994 in the framework of the IAEA Extrabudgetary Program on the Safety of RBMK Nuclear Power Plants. The objective of the meeting was to exchange experience on approaches adopted in Member States operating channel type reactors and review analysis methodology, criteria and results obtained related to multiple pressure tube rupture in RBMK type reactors including related regulatory requirements. The review was carried out in two broader technical areas, Pressure tube integrity and potential for failure propagation and Multiple pressure tube rupture scenarios. Conclusions derived include: Propagation of a single tube rupture is unlikely; The analysis of accident scenarios which could lead to multiple pressure tube ruptures in RBMKs is among the highest priority safety issues. International co-operation including independent analyses by experts from OECD countries, is required to resolve this issue. No specific scenario for multiple failures following a localized power excursion was identified. 2 refs, 12 figs, 4 tabs. (Atomindex citation 28:047192)