Instrumentation Design Engineer

1 month ago


Chennai, India Larsen & Toubro Full time

Educational Qualification:

  • Bachelor’s degree within Instrumentation engineering. Master's degree is a plus.

Experience Required:

  • 5 to 10 years

Job Description / Responsibilities:

  • Preparation & Review of P&ID diagram.
  • Preparation of Datasheets for Field instruments, special instruments, JB, Cables, Trays, Instrument fittings etc.
  • Preparation of Instrument Index, I/O list, cable schedule, Junction box schedule, wiring diagram, termination diagram, Instrument Hook-up drawing, Instrument location drawing, Earthing layouts, Control schematic diagram, logic diagram and Loop diagram, Instrument installation diagram.
  • Preparation of Design basis and Control philosophy for various instrumentation process system and packages/skids.
  • Sizing of control valve, Safety valve, flow element such as orifice & annubar. Wake frequency calculations for TW in SPI/Intools/Instrucalc.
  • Review and preparation of material requisition/RFQ, vendor offer evaluation, technical bid analysis (TBA).
  • Review of vendor documents such as instrument datasheet, Panel wiring & Panel General Arrangement drawings, Power calculation, Earthing drawings.
  • Preparation and review of PLC Architecture, I/O mapping, review of PLC panel wiring & GA drawings and HMI & SCADA graphics.
  • Co-ordination with inter disciplines such as Electrical, Mechanical, Process and Civil for instrumentation interfaces.
  • Co-ordination with external stakeholders such as vendors, clients & consultant.
  • Knowledge in review of quality inspection, QA documents, FAT/SAT procedures.
  • Exposure on review of instrumentation system in 3D model software.

Extra Low Voltage system (ELV):

  • Knowledge about design codes & standards such as NBC, Fire alarm system such as IS 2189, NFPA 72 & BS 5839.
  • Design of Fire alarm system as per NBC, NFA, & IS standards.
  • Design of Public address system, CCTV surveillance, Telephone (EPABX) & LAN system, and Access control system.
  • Design knowledge in Building Management System (BMS).
  • Interfacing of all the above systems and preparing Interfacing matrix.
  • Exposure on review of ELV system modelling & review in 3D model software.



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