Job Purpose

The Senior Instrumentation Commissioning Technician leads field execution teams in instrument calibration, loop checking, control valve testing, and multi-system interface verification across DCS, ESD, and F&G systems. Operating within an Oil & Gas EPC project environment, this role ensures field instrumentation, shutdown logic, and final control elements are fully tested, functional, and ready for safe plant start-up.

Key Responsibilities & Core Scope

• Instrument Calibration & Field Testing:

o Perform bench and field calibration, testing, and troubleshooting of pressure, temperature, level, flow, and analytical instruments using HART communicators and signal calibrators.

o Inspect, test, and commission control valves, motorized valves (MOVs), emergency shutdown valves (ESDVs), positioners, and stroke test actuators.

• Loop Checking & Commissioning Execution:

o Execute cold and hot loop checks from field transmitters, switches, and junction boxes to control room displays.

o Troubleshoot signal integrity issues, ground loops, impulse lines, and fieldbus communication protocols during commissioning execution.

• DCS / ESD / F&G Interface Testing:

o Perform interface verification and signal testing between field instrumentation and Distributed Control Systems (DCS), Emergency Shutdown (ESD) systems, and Fire & Gas (F&G) protection panels.

o Assist in functional testing of Cause & Effect (C&E) matrices, trip logic, interlocks, and alarm safety limits.

• Functional Testing & Start-Up Support:

o Conduct full functional testing of instrument packages and automated loops prior to dynamic testing.

o Provide hands-on instrument support during initial plant start-up, fluid introduction, and performance runs.

o Execute field isolations under Permit-to-Work (PTW) protocols, clear instrument punch lists, and maintain complete test dossiers in the System Completion Database (SCDB).

Desired Candidate Profile

• Education: Diploma, in Instrumentation, Control, or Electronics Engineering.

• Experience:

o 8+ years of hands-on pre-commissioning, loop checking, and commissioning experience strictly within the Oil & Gas sector (Onshore/Offshore EPC projects, Refineries, or Gas Plants).

o Demonstrated experience with DCS (Emerson, Honeywell, Yokogawa, ABB), ESD/SIS logic, and F&G detector loops.

o Proven track record in control valve diagnostic testing, field transmitter calibration, and active participation in initial plant start-up.

• Certifications (Preferred):

o CompEx (Ex01–Ex04) certification for hazardous locations / explosion protection.

o Functional Safety Technician (TÜV Rheinland or equivalent) or specialized vendor certification.