Technical and purchasing specifications for Coker Bottom and Top Unheading and Reheading Valve Systems for Delayed Coke Units
This specification sets forth the minimum requirements for the design, fabrication, inspection, testing and supply of the remotely operated fully automated unheading and reheading valves, to be installed at the top and the bottom of each Coke Drum from a Delayed Coking Unit.
The supply shall be complete with quick opening and closing top and bottom unheading valves, the respective electrohydraulic actuators and controls, HPU – Hydraulic Power Unit and HCU – Hydraulic Control Unit, PLC control panel and the facilities to interconnect with the DCS system of the Plant.
The HPU shall attend all the Coke Drums of the same Delayed Coking Unit and HCU shall be proper of each Coke Drum.
