2010 - Gas storage
As part of a critical task analysis exercise, two operations were subject to task and error analysis. They were the replacement of Sub-Surface Safety Valves (SSSV) and changing a wing valve. Both are quite different from the normal operating and maintenance tasks performed on process plants. The analyses highlighted the importance of good planning, engaging competent contractors and ensuring appropriate procedures are in place. Equally the analyses demonstrating that tasks that on the face of it are particularly hazardous can be performed in a safe and effective manner.