Instrument transmitter take off or not as precommissioning start
Instrument transmitter take off or not as precommissioning start
(OP)
Dear Sir
I have a simple question in my mind.
As the plant pre commissioning and hydraulic flushing, cleaning, air purging start, the control valve must be taken off, but the temperature transmitter,flow transmitter, control valve actuator are also required to be take off or not?
Thank you very much.
I have a simple question in my mind.
As the plant pre commissioning and hydraulic flushing, cleaning, air purging start, the control valve must be taken off, but the temperature transmitter,flow transmitter, control valve actuator are also required to be take off or not?
Thank you very much.





RE: Instrument transmitter take off or not as precommissioning start
RE: Instrument transmitter take off or not as precommissioning start
Hydraulic pressure flushing, a kind of water flushing to flush out these foreign materials such as sand, rust and dirt. When drum are used a water reservoir, their vent valve must be open until finishing of water flushing.
Safety valve,check valve, rupture disk, orifice plate or flow element, mixer, analyzer, thermocouple, PCV,control valve(except butterfly type), TSO valve.must be removed before flushing.
BTW, Any one know whey piping 's O ring joint can't not be
pressurized when flushing take place.