Task Force on Safety Design Criteria
The Generation IV International Forum (GIF) Task Force completed the development of Safety Design Criteria (SDC) for the Generation IV SFR systems in May 2013. SDC reflect the high-level GIF safety and reliability goals (excellence in operational safety and reliability and reduced likelihood and degree of core damage) and follow the GIF basic safety approach (application of defense-in-depth and emphasis on inherent and passive safety features so that safety is built-in to the design, not added-on).
SDC aim to establish reference criteria for safety design of structures, systems and components and achieve harmonisation of safety approaches among GIF member states.
The Task Force has also developed a set of safety design guidelines (SDG) to support practical application of SDC since the completion of the “SDC Phase I Report”. They clarify safety design requirements for Generation IV Sodium-cooled Fast Reactor (Gen-IV SFR) systems. The main objective of the SDG development is to assist SFR developers and vendors to utilise the SDC in their design process for improving the safety in specific topical areas including the use of inherent/passive safety features and the design measures for prevention and mitigation of severe accidents. The first report on “Safety Approach SDGs” aims to provide guidance on safety approaches covering specific safety issues on fast reactor core reactivity and on loss of heat removal. The second report on “SDGs on key Structures, Systems and Components (SSCs)” will focus on the functional requirements for SSCs important to safety; reactor core system, reactor coolant system, and containment system.