New 
Commissioning Engineering Mechanical - Port Arthur, TX
 Sempra Services Corporation | |
 United States, Texas, Port Arthur | |
| 904 West Gulfway Drive (Show on map) | |
 Jul 01, 2026 | |
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Coordinates the mechanical commissioning activities for LNG facility systems. This role ensures all rotating and static mechanical equipment is safely tested, validated, and handed over to operations in accordance with project specifications, regulatory requirements, Monitors and ensures that systems and components are designed, installed, tested, operated and maintained according to operational requirements and standards for safety and reliability. Coordinates interface among various stakeholders (e.g., procurement, health and safety, quality control, engineering, construction, project management). Documents commissioning procedures, provides operational assistance and troubleshooting and conducts training.
Primary Purpose Leads commissioning for moderately complex systems by developing test plans, conducting cause-and-effect testing, and troubleshooting integration issues to achieve mechanical completion and operational readiness. The Mechanical Commissioning Engineer operates at the intersection of the EPC contractor's construction/commissioning teams and Sempra's Operations Readiness group. You are the Owner's eyes on mechanical system integrity, ensuring equipment is handed over in a condition that supports 25+ years of safe, reliable service. Duties and Responsibilities * Develop and execute commissioning procedures for mechanical systems including compressors, pumps, turbines, heat exchangers, pressure vessels, piping, and cryogenic equipment. * Coordinate pre-commissioning, commissioning, and start-up activities with construction, process engineering, E&I, and vendor teams. * Review and validate mechanical completion certificates (MCC) and ensure system readiness for introduction of hydrocarbons and cryogenic fluids. * Witness and verify Factory Acceptance Tests (FATs) and Site Acceptance Tests (SATs) for critical rotating and package equipment. * Coordinates mechanical completion and system turnover with project teams. * Ensure all commissioning activities comply with API, ASME, NFPA, and project-specific safety and quality standards * Interface with OEM vendors during equipment start-up, performance testing, and warranty validation. * Ensures compliance with hazardous area classification requirements during commissioning. * Performs other duties as assigned. | |