Mechanical maintenance and reliability personnel
LNG Mechanical Technician
An equipment-focused pathway covering LNG pumps, compressors, valves, loading systems and the cryogenic constraints that affect maintenance work.
Role learning outcomes
A practical curriculum target for the role.
- Identify major rotating and mechanical equipment functions.
- Relate equipment condition to process consequences.
- Recognize cryogenic, pressure and isolation constraints before maintenance.
- Use engineering and OEM documentation to support equipment work.
Possible evidence in a workplace program
- • OEM-guided task qualifications
- • Inspection or maintenance records
- • Alignment or condition records where applicable
- • Knowledge assessments
Employer authorization, site qualification and licensing remain separate from LNG University learning records.
Foundation
Build the technical language and system context needed before role-specific depth.
Foundational
LNG Properties, Cryogenics and Phase Behavior
Build the physical foundation needed to understand why LNG equipment, materials, operating limits and safeguards are different from conventional ambient-temperature hydrocarbon systems.
Intermediate
Piping & Instrumentation Diagrams (P&IDs)
Develop the ability to read the detailed relationship among process piping, valves, instruments, equipment, control loops and safeguards on LNG P&IDs.
Intermediate
Centrifugal Compressors in LNG Service
Understand the operating principles, performance limits, major components, auxiliaries and protection philosophy of centrifugal compressors used in LNG and gas-processing facilities.
Core role knowledge
The principal systems and technical subjects most directly connected to the role.
Intermediate
Boil-Off Gas (BOG) Compressors
Study the role of BOG compressors in controlling LNG tank and transfer-system vapor generation while maintaining a stable vapor-handling path.
Advanced
Dry Gas Seals for Centrifugal Compressors
Study the purpose, arrangement and monitoring of dry gas seals used to limit process-gas leakage from centrifugal compressors.
Intermediate
Cryogenic In-Tank Pumps
Study submerged LNG pumps, pump columns, motor arrangement, hydraulic behavior and the operating considerations that arise from cryogenic service.
Intermediate
LNG High-Pressure Sendout Pumps
Understand how high-pressure LNG pumps raise liquid pressure before vaporization and how their hydraulic operating envelope connects storage, recondenser and vaporizer systems.
Intermediate
Cryogenic Valves, Materials and Low-Temperature Design
Understand how cryogenic temperature affects valve construction, materials, stem arrangements, sealing, thermal contraction and isolation strategy in LNG service.
Intermediate
Pressure Safety Valves (PSVs)
Understand the purpose, terminology and process-safety role of pressure safety valves protecting LNG equipment and piping against credible overpressure scenarios.
Intermediate
LNG Marine Loading Arms and Transfer Systems
Understand the mechanical, hydraulic and shutdown functions of LNG loading arms used for liquid and vapor transfer between terminal and vessel.
Advanced & protection context
Deeper control, safeguard or specialist knowledge that strengthens decision-making and cross-functional understanding.
Advanced
Compressor Anti-Surge Control
Understand why surge is damaging, how an anti-surge controller protects the compressor and why recycle-valve response, instrumentation quality and operating margin matter.
Advanced
Compressor Performance Monitoring
Understand how operators and engineers use pressure, temperature, flow, vibration and map position to evaluate centrifugal-compressor performance and degradation.
Intermediate
Emergency Shutdown Valves (ESDVs)
Learn how ESDVs isolate inventories or process sections during defined shutdown scenarios and how valve fail position, actuator design and shutdown logic fit into the protective architecture.
Intermediate
Blowdown Valves (BDVs) and Depressurization
Understand how BDVs support controlled depressurization of process inventories during shutdown or emergency scenarios and why blowdown capacity, destination and timing are engineering decisions.
Intermediate
LNG Storage Tanks and Tank Systems
Understand the major systems around LNG storage tanks, including containment, insulation, instrumentation, pressure management, pump columns and safeguards.
Build this role into a company program