HSE Critical Activity
Activity or task which provides or maintains Barriers. (These tasks may or may not be hazardous in themselves, e.g., monitoring alarms, gas detector testing, Permit-To-Work.)
Other Related Terms and Definitions:
IADC HSE Case Guidelines Issue 02 – Activity or task which exposes the person(s) carrying out the task to hazards [interpretation from context].
Source: International Association of Drilling Contractors, Appendix 2 to Health, Safety and Environment Case Guidelines for Offshore Drilling Contractors, Issue 3.3.2, February 2010. IADC Guidelines