مهدی ثقفی

Following Three Mile Island (TMI) accident in 1979, first severe accident (SA) in Nuclear Power Plants (NPPs), Accident Management Support Tools (AMSTs) were developed and installed in a number of NPPs. Lessons learned from Fukushima accident highlighted importance of Accident Management (AM) in mitigation severe radiological consequences after a SA and suggested reconsiderations of AM program which in turn created the need for AMSTs adaption and modernization. It is predicted that AMSTs will be subject to further developments, inter alia to cover low power and shutdown states as well as normal operation. Furthermore, hydrogen production and related safety systems in both reactor and spent fuel pool are required to be considered in new AMSTs design.