Off line water wash is not automated in GE 9FA DLN2.0 gas turbines. there is a big list of isolation and tapping required to be done prior off line water wash and afterwards. One of the provisions raised in GE GEK 107122 is the following: "Close valves in all compressor discharge pressure transducer supply lines (AD-4)". in reality on site we disconnect all tubing (stainless steel with Swagelok fittings). the main fear is to introduce humidity in the sensing line of transducer and create problems in the start up. These transducers are located in junction box (compressor discharge pressure, differential pressure from purge lines of atom air, water injection, liquid fuel.) Can you share similar experience?