ABOUT TRISEAS INTERNATIONAL
Independent Cryogenic Engineering & Services Since 2006
From LNG carriers and FSRUs to liquefaction terminals and petrochemical facilities, TriSeas delivers specialist engineering services, certified quality systems, and rapid-response field support across the globe. Our expertise spans the complete lifecycle of cryogenic rotating equipment and associated systems.
Independent Cryogenic Engineering Since 2006
Trusted worldwide for cryogenic engineering, maintenance, retrofit, and spare parts solutions supporting LNG and petrochemical operations.
About TriSeas International, Inc.
TriSeas is an independent cryogenic engineering and services company headquartered in McLean, Virginia, USA. Since 2006, we have supported LNG carriers, FSRU/FLNG facilities, liquefaction and regasification terminals, and petrochemical plants with specialist maintenance, repair, retrofit, and spare parts solutions.
- Founded in 2006
- Headquarters: McLean, Virginia, USA
- Serving LNG & Petrochemical Industries Worldwide
- Independent, Non-OEM Provider
- Global Operations US • UK • UAE • Qatar • Singapore Malaysia • India • Nigeria
QUALITY & COMPLIANCExpertis
Certifications & Quality
Our quality and safety management systems are independently certified, externally audited, and maintained on an ongoing basis — not claimed, certified.
ISO 9001:2015 — Quality Management System
Every repair, overhaul, and parts manufacturing activity is executed under a certified ISO 9001:2015 Quality Management System. This covers process control, dimensional traceability, material certification, inspection records, and documentation — so every pump that leaves our facility has a complete, auditable quality record.
ISO 45001:2018 — Occupational Health & Safety Management
We hold ISO 45001:2018 certification, the international standard for occupational health and safety. This means our HSE commitments are not internal policy statements — they are independently audited obligations, covering workshop operations, field service deployment, and site access at client facilities.
All manufactured spare parts are produced to tolerances matching or exceeding the original OEM design specification. Every rebuilt pump is returned with a two-year warranty and full job documentation including dimensional inspection records, test data, and parts traceability certificates.
Industry Memberships
TriSeas is an active, registered member of two of the world’s leading cryogenic industry bodies
Cryogenic Society of America (CSA)
Listed in the CSA Buyer’s Guide as a verified cryogenic services provider, recognizing TriSeas as a trusted supplier of cryogenic engineering, repair, maintenance, and technical support for LNG and industrial gas sectors.
British Cryogenics Council (BCC)
Full registered member of the BCC, the UK’s foremost professional body for the cryogenics industry, based at the Rutherford Appleton Laboratory, Oxfordshire
What We Do
TriSeas provides end-to-end maintenance, repair, upgrade, and spare parts services for all major brands of cryogenic machinery. Our engineers bring specialist knowledge across the equipment types that carry the highest operational risk for LNG and petrochemical operator
Cryogenic Pumps
Overhaul, lifetime extension, engineered upgrades, and manufactured spare parts for Nikkiso, Ebara, JC Carter, ACD, and Shinko submersible pumps — restored to OEM specification or above, with full performance test documentation.
BOG Compressors & Turbo-Expanders
Full mechanical and aerodynamic overhaul, vibration analysis, dynamic balancing, inlet guide vane and diffuser repair, and seal re-engineering for Atlas Copco, Cryostar, Mafi-Trench, and RotoFlow units.
Cryogenic Safety Valves
Upgrade, repair, and OEM-equivalent spare parts for all major anti-surge and cargo safety valve brands — with full test and certification records.
Cryogenic Insulation
Class-approved insulation systems for LNG/LPG cargo tanks, FLNG and FSRU conversions, and pipeline systems — covering newbuild supply, retrofit, and boil-off rate reduction programs.
Trusted by Global Operators
TriSeas engineers have worked alongside operations and engineering teams at some of the world’s most demanding LNG and energy facilities, including ADNOC, QatarEnergy (Qatargas), Shell, TotalEnergies, OQ, Reliance Industries, Nakilat, Borouge, and Nigeria LNG.
Shell
ADNOC
Nakilat
Borouge
Qatargas
Reliance
Nigeria LNG
OQ Oman
Shell
ADNOC
Nakilat
Borouge
Qatargas
Reliance
Nigeria LNG
OQ Oman
References are available on request. We encourage prospective clients to speak directly with operators we have worked with before awarding critical repair work to any service provider — including us.
All brand names and trademarks are the property of their respective owners.
Our Service Network
TriSeas deploys from service hubs and partner workshops in the United States, United Kingdom, UAE, and Singapore, enabling
24–48 hour emergency response
for critical pump and compressor failures
On-site field service
at drydock, terminal, or offshore facility
Workshop overhaul
with full cryogenic test capability and job documentation
Global spare parts logistics
with rapid despatch for common wearing components
Our Values
Our values define how we work, how we serve our clients, and the standards we uphold across every project. From technical excellence and certified quality to responsiveness and customer-focused support, they guide everything we do.
Personalised Customer Care
Every client works directly with a senior cryogenic engineer — not a helpdesk. Our solutions are tailored to your specific equipment, operating conditions, and maintenance window — not taken from a standard template. We build relationships one job at a time, and our reputation depends entirely on what we put back into service. We commit to responding to every enquiry within 24 hours, and to every emergency callout within 2 hours.
Quality, Certified
ISO 9001 and ISO 45001 certification means our standards are independently audited — not self-declared. Every job we do is traceable, documented, and warranted.
Independent and Objective
As a non-OEM provider, we are free to recommend the best engineering solution for your equipment. We are not constrained by a manufacturer’s parts programme, pricing structure, or service scope.
Responsive
24/7 global coverage, with engineers who understand what it means when an LNG carrier is on charter or a terminal is facing unplanned downtime. Speed and accuracy — not one at the expense of the other.
OEM Disclaimer
TriSeas International, Inc. is an independently owned and operated service organisation. We are not affiliated with, authorised by, or endorsed by any original equipment manufacturer. All OEM brand names and trademarks referenced on this website are the property of their respective owners and are cited solely to identify the equipment TriSeas is qualified and experienced to service and repair.
