Temporary Systems
Design, Fabrication, Installation and Operation of temporary Systems
Years of experience
Successful projects
Highly Experienced Team
Temporary Systems for Commissioning and Pre-Commissioning Activities
Temporary systems play a critical role during the commissioning and pre-commissioning phases of oil and gas projects, ensuring seamless project progression before the permanent infrastructure is fully operational. These systems deliver essential utilities and services that enable construction completion, system testing, and safe equipment start-up across a wide range of industrial applications.
Whether supporting FPSOs, offshore platforms, refineries, petrochemical plants, or other complex facilities, temporary systems are engineered for reliability, compliance, and rapid deployment. They bridge the gap between mechanical completion and steady-state operations, providing the flexibility to adapt to evolving site conditions and tight project schedules.
At Cassia Marine & Engineering Services PTE LTD, we specialize in the design, integration, and delivery of high-performance temporary systems that meet stringent technical and safety standards. From power generation and cooling water systems to compressed air, nitrogen, and water utilities, our solutions ensure that every phase of commissioning is supported by the right infrastructure delivered on time, every time.
Temporary Compressed Air and Nitrogen Systems
Cassia provides fully engineered compressed air (air cooled) and nitrogen packages for a wide range of commissioning activities, including:
- Pneumatic tool operation
- Pipeline pressure testing (hydrostatic or pneumatic)
- System drying, inerting, and purging
- Flange management and valve actuation
- System start-up
These systems are selected and configured to ensure process integrity, cleanliness, and compliance with project safety standards.
Temporary Water Systems
Water-based systems are essential for mechanical and process readiness during commissioning. Cassia delivers temporary seawater and freshwater solutions tailored for:
- Ballast tank operations
- Hull and topside hydrotesting
- Process equipment flushing
- Process system test
- Cooling and chemical cleaning support
- Demineralized water for steam generation or system test
Pump skids, submersible pumps with VFD, reverse osmosis, temporary pipework, and filtration units are deployed and configured to meet site-specific pressure, flow, and cleanliness criteria. These systems are particularly valuable for FPSO commissioning and early offshore integration scopes.
Temporary Cooling Systems
Temporary cooling systems are indispensable for thermal management during the commissioning of gas turbines, steam turbines (COGEN), electrical substations, and process-critical equipment. They play a key role in maintaining safe temperatures during initial load runs and functional testing.
Applications include:
- Closed-loop cooling water for steam/gas turbines and compressors
- Temporary HVAC and chilled water supply for control rooms and MCCs
- Preventing thermal stress on equipment prior to start-up of permanent cooling infrastructure
Cassia Marine provides skid-mounted or modular cooling packages, custom-engineered to meet project-specific requirements, featuring:
- Centrifugal pumps driven by variable-speed drives (VFDs) or diesel engines
- Shell-and-tube or plate heat exchangers
- Expansion tanks
- Cooling tower modules
- Integrated instrumentation and control valves
To ensure safe and rapid deployment, Cassia also manages the design and fabrication of temporary piping, including:
- Full 3D modelling for space and clash management
- Piping stress analysis (e.g., CAESAR II)
- Isometric drawings and complete documentation packages
These systems are mobilized quickly, require minimal site modification, and are optimized for high-reliability operation under field conditions.
Temporary Facilities and Site Logistics
Cassia supports commissioning teams with a range of temporary site infrastructure solutions, including:
- Modular office and control cabins
- Workshop and tool containers
- Secure storage for parts and consumables
- Material handling solutions (cranes, forklifts, rigging gear)
These facilities are essential to maintaining a safe, efficient, and organized commissioning environment, especially on complex or remote project sites.
Strategic Importance of Temporary Systems in Commissioning
Bridging the Gap
Temporary systems allow for early energization, flushing, testing, and dynamic checks before the permanent infrastructure is commissioned, helping to reduce project timelines and accelerate readiness.
Safety, Compliance, and Flexibility
All systems provided by Cassia are project-specific, compliant with international codes and standards, and verified for safe operation in demanding industrial environments (including ATEX, ABS, and DNV conditions).
Supporting Full-Scope Testing
Cassia’s temporary systems support comprehensive commissioning activities, including:
- Hydrotesting
- Chemical and mechanical flushing
- Electrical and instrumentation loop checks
- Rotating equipment dry/wet commissioning
- System performance and endurance testing
Cassia’s Commitment
All systems provided by Cassia are project-specific, compliant with international codes and standards, and verified for safe operation in demanding industrial environments (including ATEX, ABS, and DNV conditions).