Job Summary

We are looking for an experienced Instrumentation Engineer with a robust background in instrumentation design and detailed engineering for Oil &

- Gas, refinery, petrochemical, and offshore projects. The candidate should have hands-on experience in Smart Plant Instrumentation (SPI), preparation of engineering deliverables, instrument wiring, cable schedules, and coordination with multidisciplinary engineering teams.

Key Responsibilities

- Prepare and maintain Instrument Index, Instrument Datasheets, Instrument Specifications, and I/O Lists.

- Develop Instrument Loop Diagrams, Wiring Diagrams, and Junction Box (JB) Wiring Drawings using SmartPlant Instrumentation (SPI).

- Prepare Instrument Cable Schedules, Cable Lists, Cable Block Diagrams, and Interconnection Wiring Drawings.

- Handle device panels, junction boxes, marshalling panels, DCS/PLC interfaces, and control system wiring.

- Review P&IDs;, Instrument Design Basis, technical specifications, and vendor documents.

- Prepare material take-offs (MTO), technical bid evaluations (TBE), and technical queries (TQs), as required.

- Coordinate with clients, vendors, and multidisciplinary engineering teams to resolve technical issues.

- Ensure engineering deliverables comply with project specifications, applicable standards, and delivery schedules.

- Support FEED and detailed engineering activities for Oil &
- Gas and offshore projects.

Required Skills





- Hands-on experience in SmartPlant Instrumentation (SPI).

- Good knowledge of instrumentation engineering deliverables and design documentation.

- Experience in instrument index, I/O lists, loop diagrams, wiring diagrams, and cable schedules.

- Understanding of DCS, PLC, ESD, Fire &
- Gas (F&G;) systems, junction boxes, and marshalling panels.

- Ability to review P&IDs;, vendor documents, and instrument datasheets.

- Experience in Oil &

- Gas, refinery, petrochemical, or offshore EPC projects.

- Knowledge of AutoCAD and MS Office.

- Good communication, coordination, and technical problem-solving skills.

Educational Qualification

- B.E./B.Tech or Diploma in Instrumentation, Electronics &
- Instrumentation, Electrical &
- Electronics, or a related engineering discipline.

Preferred Experience

- Experience working on international Oil &
- Gas EPC projects.

- Exposure to FEED and detailed engineering deliverables.

- Experience with cable sizing, cable tray calculations, and MTO preparation.

- Experience with DCS/PLC/ESD/F&G; instrumentation design and SPI reporting.

Keywords: Instrumentation Engineer, Instrumentation Design Engineer, SPI Engineer, SmartPlant Instrumentation, Instrument Index, I/O List, Loop Diagram, Cable Schedule, Wiring Diagram, Oil &

- Gas, EPC, Refinery, Petrochemical, Offshore.

📌 Instrumentation Engineer (Chennai)
🏢 Accuspeed Engineering Services
📍 Chennai