Gas Leak from vent line within turbine enclosure

During the above process, the gas detector within the turbine enclosure activated.

The GPA was activated when the gas detector went into High/High alarm and subsequently shut down the turbine.

Snoop tests confirmed that the release had come from a join between the flexible/hard pipe section within the enclosure.

A weep had been identified on the flexible line by the previous crew involved in the initial isolation using nitrogen. A work order was raised but the vent line was not tagged (Defect Tag).