Technical and purchasing specifications for Hydraulic Linear Actuator and Electrohydraulic Power and Control Units for Coker Top and Bottom Unheading and Reheading Valve Systems
This specification sets forth the minimum requirements for the design, fabrication, inspection, testing and supply of the actuating system for 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 actuating system shall be complete with quick opening and closing top and bottom unheading and reheading valves, respective actuators and 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.
