To piping team, Civil team, process team and electrical team In case, steam jacketed control valve interface should be done with piping for nozzle orientation for inlet and outlet nozzles. Fire-proofing jacket dimensions, in case valve is in fire zone The instrument team shall ensure accessories orientation and location for ease of maintenance.Ģ. GAD of control valves to be given to the piping team to reserve the space for accessibility and maintenance. In case of Electrical actuator, power requirement is given to electrical team for feeder and ACDB sizingįace-to-face dimension, valve size, rating, facing of control valve to be given to Piping team to incorporate in 3D modelsġ. Instrument Air required for control valve is given to process team for IA compressor / receiver sizing Valve Typical to be modified if required. Legend mark up to process team to be provided in case of additional accessories like Partial stroke testing or MOV related signals. Special attention for severe service like high temperature, cryogenic service, Large size valves, Governing valves etc Valve material specification / Piping material specification are referred for Control valve body material, Trim material, flange rating, etc requirementsīased on valve sizing and vendor offer valve type and size are indicated by the instrument team on P&ID. In case of cavitation/flashing, process data should be cross-checked with the process team for further selection
Instrument team performs the sizing calculation by tools like Conval and/ Instrument datasheet with indicative Cv is sent to vendors for their offer. Process data/process datasheet for control valve to instrument Team by process team (which includes flowrate, diff pressure, temperature, density, etc)Ī special requirement such as Max flow limitation, the applicability of fire zone, etc to be indicated by the process team Control Valve Selection during Design Phaseįollowing is a typical example for Control valve interfaces for various input and output with multiple disciplines, but not limited to. Project success lies in timely and correctly co-ordinating with other disciplines. HIPPS: High integrity pressure protection system,įor each deliverable an Instrument engineer must closely coordinate with other discipline either for seeking input or providing output. Interface with Field instrument engineering, Control system Engineering and installation engineering.Specification of MMS, HIPPS, BMS, WHCP, Packaged control system, etc.Instrument location / Junction box location drawings.Cable block diagram / Instrument Cable Schedule and Termination details,.Main cable tray/ trench/ duct routing drawing, Cable Tray sizing, Junction box grouping.Instrument Air Supply and distribution layout.I/O List including alarm and trip summary.Specification of Control and Safety systems.Selection/ sizing calculation for control valves, flow elements/ meters, thermowell, DP Level calculation, Pressure safety valve,.Datasheet of Valves, Instruments (Pressure, temperature, flow, level, Analyser, Fire and Gas devices, etc.General specification of Instrumentation / Design Basis.A Control and instrument (C&I) engineer performs field instrument engineering, control system engineering, installation engineering, and package engineering.