Safety instrument function in workover control systems

Abstract

Those master thesis work tries to examine the maximum independency for safety system in workover and convince that the independent safety system is enough safe and comply with international and local standard. I have started by general description of workover system that be used during well intervention, then go to look the safety system and how this system prevent accident during well intervention and well testing. The aim of this thesis in the end is try to modify safety system in order to maximum independency from control system. This thesis shows a risk evaluation approach that is in line with approved standard being using to certify that the new safety system in enough safe.