Senior Commissioning Engineer (Mechanical & Process Utilities)

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Scope of Work

Role Overview

As a Commissioning Engineer (Mechanical & Process Utilities), you will be responsible for executing all mechanical and utilities commissioning activities for the FLNG project during the yard execution and offshore start-up phases. You will ensure that all mechanical systems—covering rotating equipment, static equipment, and process utility packages—are tested, validated, and made ready for safe start-up and operations.

This role works closely with construction, process, E&I, structural, vendors, and the commissioning integration team to deliver system completion, pre-commissioning, commissioning, and handover in accordance with project requirements and class standards (DNV/BV/ABS).


Key Responsibilities

Mechanical & Utilities Commissioning Execution

  • Carry out pre-commissioning and commissioning of mechanical and utility systems: seawater lift, cooling water, nitrogen, instrument air, diesel, potable water, open/closed drain, HVAC, and firewater systems.
  • Perform system walkdowns, verify installation completeness, and manage punch lists (A/B categories) until mechanical completion.
  • Execute flushing, blowing, hydrotesting verification, leak tests, reinstatement checks, and system preservation activities.
  • Conduct alignment checks, solo runs, function tests, and load tests for rotating equipment (pumps, compressors, blowers, fans).


System Completion & Documentation

  • Work within the completions management system (ICAPS / WinPCS / MCPlus or equivalent) to track MC, PC, and commissioning progress.
  • Ensure all procedures, check sheets, and commissioning dossiers are completed, signed off, and properly documented for system handover.
  • Support engineering in resolving design or installation non-conformances.


Vendor & Interface Coordination

  • Coordinate vendor representatives for package start-ups, FAT/SAT witness, troubleshooting, and commissioning support.
  • Interface closely with construction, process, E&I, marine, and HSE teams to resolve technical and schedule issues.
  • Support integrated commissioning activities in collaboration with the commissioning integration team.


Start-Up Readiness

  • Assist the process and operations team in preparing systems for RFO/RFSU (Ready for Operations/Ready for Start-Up).
  • Participate in cause-and-effect validation, functional testing, and system energisation sequences related to mechanical utilities.
  • Ensure all work is executed safely and in compliance with project procedures and class requirements.


Qualifications & Experience

  • Degree or Diploma in Mechanical Engineering or related discipline.
  • 5–10 years of commissioning experience on FPSO, FLNG, gas plant, refinery, or major offshore utility systems.
  • Strong knowledge of mechanical utilities: nitrogen, IA/DA, CW, SW, diesel, HVAC, firewater, open/closed drains.
  • Hands-on experience with rotating equipment commissioning (alignment, solo runs, vibration monitoring).
  • Familiarity with completions management systems (ICAPS/MCPlus/WinPCS) and system handover processes.
  • Experience working in fabrication yards (China/Singapore/Korea) or offshore commissioning environments is an advantage.
  • Ability to interpret P&IDs, PFDs, datasheets, ITPs, and vendor manuals.
  • Strong HSE mindset and ability to work effectively in a multi-discipline, multicultural team.
  • Mandarin proficiency is an advantage due to vendor and yard interfaces.


Software

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Company specifications

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Codes and standards

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