Samson 3510 Mounting And Operating Instructions

Also see for 3510: Mounting and operating instructions

44 EB 8091-1 ENDecommissioning and disassembly9 Decommissioning and disas-semblyRisk of bursting in pressure equipment.Control valves and pipelines are pressureequipment. Improper opening can lead tobursting of the valve.− Before starting any work on the controlvalve, depressurize all plant sections con-cerned as well as the valve.− Drain the process medium from all theplant sections concerned as well as thevalve.− Wear personal protective equipment.Risk of personal injury due to residual pro-cess medium in the valve.While working on the valve, residual processmedium can escape and, depending on itsproperties, may lead to personal injury, e.g.(chemical) burns.− If possible, drain any process medium resi-dues from the plant sections concerned aswell as from the valve and dead cavities.− Thoroughly flush the pipelines. The plantoperator is responsible for cleaning thepipelines.− Wear protective clothing, safety gloves,and eyewear.Risk of burn injuries due to hot or cold com-ponents and pipeline.Valve components and the pipeline may be-come very hot or cold. Risk of burn injuries.− Allow components and pipelines to cooldown or heat up.− Wear protective clothing and safety gloves.9.1 DecommissioningTo decommission the control valve for serviceand repair work or disassembly, proceed asfollows:1. Close the shut-off valves upstream anddownstream of the control valve to stopthe process medium from flowingthrough the valve.2. Completely drain the pipelines andvalve.3. Disconnect and lock the pneumatic airsupply to depressurize the actuator.4. If necessary, allow the pipeline and valvecomponents to cool down or heat up.9.2 Removing the valve fromthe pipelineVersion with female thread or flanges1. Put the control valve out of operation (seesection 9.1).DANGER!WARNING!WARNING!