Water cooling systems, water intake risers

What are water intake risers used for?
- Water intake risers pump cold seawater from depth to provide the required volume and flow for cooling essential equipment. They are particularly suited to floating production, storage and offloading (FPSO) and floating liquefied natural gas (FLNG) units, helping prevent equipment overheating.
How deep can AIS water intake risers pump seawater?
- AIS water intake risers have been designed to pump cold seawater from depths of up to 800 metres. The system is engineered around the required water depth, temperature and flow rate for each application.
Why use high-density polyethylene (HDPE) for water intake risers?
- AIS water intake risers use HDPE alongside rubber hose sections and other components. HDPE provides a lightweight solution designed to accommodate the demands of deepwater offshore operation, while reducing the overall weight of the system compared with traditional steel and rubber solutions.
Are water intake risers bespoke?
- Yes. Each water intake riser system is designed around the specific requirements of the project, including water depth, temperature, required flow rate and the hydrodynamic stresses of the operating environment. The assembly can also be adapted to different FPSO or FLNG configurations.
What components make up a water intake riser?
- The AIS system combines high-density polyethylene (HDPE) pipes, rubber hoses, riser seats, strainers and polyurethane tapers. These components work together to provide a complete water intake system, with the configuration tailored to the requirements of the application.
How do water intake risers help prevent overheating?
- The risers bring colder seawater from below the surface to provide cooling for essential onboard equipment and processes. Supplying the appropriate volume and flow of cold water helps maintain required operating temperatures and prevent overheating.
Do water intake risers require regular maintenance?
- The materials used in AIS water intake risers are selected for durability and long-term offshore service. The systems require no maintenance throughout their long service life, with routine inspections forming part of their ongoing management.
Can AIS support installation of water intake risers?
- Yes. Water intake risers are supplied with a customised installation procedure, and AIS can provide technical support and training to help facilitate installation. AIS has also supervised offshore installation of its water intake risers on FPSO projects.

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Water cooling systems

Keeping critical offshore equipment cool and operational

Our bespoke water intake risers deliver cold seawater from depth to support reliable cooling of critical equipment. Lightweight, durable systems are engineered around each project's water depth, temperature, flow rate and operating environment, helping maintain performance in demanding offshore conditions.

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