Energia i regulacje · 06/05/2016

Embedded Digital Devices In Safety-Related Systems

The U.S. Nuclear Regulatory Commission (NRC) is issuing Regulatory Issue Summary (RIS) 2016-05, "Embedded Digital Devices In Safety-Related Systems." This RIS clarifies the NRC staff's position on existing regulatory requirements for the quality and reliability of safety-related equipment with embedded digital devices. Furthermore, the purpose of this RIS is to raise awareness that there may be potential safety issues from a postulated common cause failure (CCF) if an undetected software error should occur in embedded digital devices located in multiple trains of redundant safety equipment in nuclear facilities.