Basic design of the SNR 2 safety system

The SNR 2 safety concept takes maximum advantage of the inherent safety features of LMFBR's both to improve operating safety and to reduce the capital cost. This paper presents a first draft of the basic design features of the most essential part of the safety system, which ensures that the maximum permissible environmental dose limits are not exceeded during any design basis accidents. The design is characterized by the fact that the safety functions are performed with a minimum of active components and are independent of an emergency power generating system for at least the first 12 hours. The safety-related decay heat removal is completely ensured by natural convection. There are no specific design measures to cope with a core melting accident and the reactor system is enclosed in a low pressure vented confinement building