Safety Critical Elements can be defined as such parts of an installation and such of its plant (including computer programmes), or any part of those:
- The failure of which could cause or contribute substantially to a major accident, or;
- A purpose of which is to prevent, or limit the effect of, a major accident.
This topic relates to post-event (loss of control or containment) mitigation or recovery measures. For information on prevention measures, refer to the following topics (technologies):
The API also provide guidance in RP 2001 “Fire Protection in Refineries”.
This topic relates to the following PSM elements: