4.1.6.1

Are the changes in responsibilities during an emergency / abnormal operation clearly defined and established through practice?

Responsibilities and operator task in the control room change from normal situations to abnormal operations. These changes must be known to and accepted by all personnel.

Comments/Recommendations

ISO 11064-1, 7.2
DC: Are the driller's responsibilities versus the company man's or tool pusher's responsibilities in case of a well control situation clearly defined and known by relevant personnel?