Instrumentation & Control Design Engineer

Larsen & Toubro (L&T); Chennai District; On-site; INR 600,000 - 900,000; Full time

Job summary

Larsen & Toubro (L&T) in India seeks an instrumentation engineer to design and review process instrumentation for large-scale plants. You will prepare P&ID diagrams, instrument datasheets, I/O lists, and control schematics, coordinating with electrical, mechanical, and process teams to ensure integration and safety.

The role involves vendor document review, FAT/SAT participation, 3D model exposure, and ensuring QA compliance across instrumentation packages.

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/IN tools/ 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.

Job description

ROLES & 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/IN tools/ 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.