Gas release from small bore fitting

•An intervention team arrived on a normally unattended installation (NUI) and heard an audible anomaly

•On area visual inspection during the standard arrival checks, there appeared to be a leak from the well

•A GPA and manual process shutdown (PSD) were initiated. This closed the wing valve, with the master valve and down-hole safety valve being closed manually

•A full muster was achieved

•The wellhead pressure transmitter indicated the pressure had bled off in the tree to 0.5 bar

•Flow line was de-pressurisation

•The muster was stood down

•Upon investigation, it was discovered that the coned and threaded connection was loose