Off-Site Service and Maintenance

Fitness for service testing

We offer Fitness-for-Service (FFS) assessments in accordance with ASME code guidelines, providing engineering evaluations to determine the structural integrity of components experiencing degradation or damage. Our approach ensures reliable decision-making on continued operation, repair, or replacement—aligned with industry best practices and safety standards.

All vessels tested are returned with a complete test report.

Intermediate Service

Our Intermediate service package provides essential maintenance to ensure ongoing performance and safety of your pressure vessels. The service includes a thorough visual inspection to assess general condition and identify any visible signs of wear or damage. Key wear components and consumables, such as O-rings and gaskets, are replaced as standard.

We also carry out rupture disc replacement, and where applicable, perform crack pressure testing of the pressure relief valve to verify correct function. A final pressure test and leak check confirms system integrity before return to service.

Each serviced vessel is supplied with a comprehensive service report, documenting all activities, findings, and replaced components to support traceability and compliance.

Advanced Service

We provide comprehensive service and refurbishment for intermediate pressure vessels, ensuring continued reliability and regulatory compliance. Each vessel undergoes a systematic disassembly, followed by a thorough cleaning and degreasing process to remove operational residue. A detailed visual inspection identifies any signs of wear, corrosion, or damage.

All wear components and consumables, including O-rings, gaskets, and seals, are replaced with OEM or approved equivalents. The rupture disc is renewed as standard, and, where applicable, the pressure relief valve undergoes a crack pressure test to confirm functional integrity.

Following inspection and part replacement, vessels are reassembled using appropriate anti-seize compounds and PTFE tape on threaded joints, in line with service best practices. A hydrostatic or pneumatic pressure test is performed to validate leak-free performance.

Upon completion, each vessel is returned with a comprehensive service report documenting all actions taken, component replacements, and test outcomes.