Overseas AST

Mechanical

From subsea pipelines which brought services to the UAE’s offshore islands to district cooling schemes for the country’s new developments, Overseas AST’s Mechanical Division has vast experience in major projects throughout the Emirates.

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Airport Fuel Systems
District Cooling Schemes
Sub-Sea Pipelines
Pipeline Specialists
Major Completed Projects

Overseas AST is recognised as the UAE’s leading contractor for aviation refuelling systems, having been involved in major contracts for the international airports at Dubai, Abu Dhabi and Sharjah.

In Dubai, the project included the construction of tanks and jet fuel pipelines with associated electrical and instrumentation works.

Overseas AST has become the recognised leader for both mechanical and civil works in the installation of district cooling infrastructure schemes in new development projects in the UAE.

These works utilise the in-house capabilities of the civil and mechanical divisions and the company has executed projects for the UAE's main district cooling providers.

Overseas AST has been involved in pipeline projects for the oil, gas and water sector throughout the Emirates for more than 40 years. The company has a large stock of roller stations and floats for installing sub-sea pipelines. Many of the pipeline projects require the re-routing and expansion of existing services and the Mechanical Division are specialists in hot tap welding, hot tapping and bypassing on oil, gas, jet fuel and water systems.
A pipeline with floaters ready to be pulled over the roller stations to its submarine location.
AST's pipeline skills were fully utilised with the installation of a 24" water main from Jebel Dhana to Sir Baniyas Island in Abu Dhabi's south western region. Assembled on land, the pipeline was pulled over the distance of 9km, then considered a world record for a submarine pipeline pull.
Pipeline stringing yard for a 24" submarine pipeline in Fujairah.

Business Bay Executive Towers District Cooling Distribution Network A chilled water network for the region's business capital. Located at the Business Bay, Dubai, UAE, the project consists of the supply and installation of pre - insulated carbon steel chilled water pipelines of various diameters up to 1200mm. The project includes the ETS room connection piping and a total length of more than 2.5 km, most of which is underground piping. The project is being constructed in 2007, for EMPOWER under the supervision of Maunsell Consultancy Services Ltd. Jebel Ali International Airport City - Phase 1A Airfield and Infrastructure Aviation fuel system for one of the largest airports worldwide. Jebel Ali International Airport City or Dubai World Central International Airport is located at Jebel Ali, South of Dubai, in the UAE. The project's first phase (1A) consists of the supply, installation, testing, commissioning and maintenance of more than 20 km of mainly 500mm and 600mm Jet A-1 carbon steel piping including the EFSO and leak detection systems with miscellaneous valves and accessories. The project started in July 2006; it is being constructed for Dubai's Department of Civil Aviation (DCA). The consultant is Dar Al-Handasah and the main contractor is Al-Naboodah Contracting LLC.
Dubai Health Care City District Cooling Pipeline Network A chilled water network for the location of choice for high-quality and innovative health care. The project consists of the supply, installation and testing of more than 9 km of pre-insulated carbon steel chilled water piping with associated works. The project began in 2005 and is ongoing, it is being constructed for EMPOWER and Tebodin as the consultant. Safran Military Airbase Jet Fuel Contract Military aviation hydrant fuel system for the GHQ Armed Forces Directorate of Military Works.
Dubai International Airport Expansion (Phase II) AX013 - Taxiways and Aprons around Concourse II AX091 - Aprons North Of Cargo Village AX123 - Earthworks and Piling, Concourse III The three projects are being executed at the same time starting in 2005, at different locations at Dubai International Airport for the Department of Civil Aviation (DCA), with Dar Al-Handasah as consultant and Al-Naboodah Contracting LLC. as main contractor. AX013 and AX091 consist of the supply, installation, testing, commissioning and maintenance of fuel line works for more than 5 km of carbon steel piping in addition to the tie-ins to the operational fuel network. AX123 consists of the decommissioning of an obsolete fuel line. Working on a live system in a live environment is the most challenging, where any minute slip could cause a range of substantial losses for all concerned parties.
Sheikh Zayed Road District Cooling Project, Dubai The project involves the supply and installation of tens of kilometers of pipeline along and across Sheikh Zayed Road. The pipelines are of different sizes and the project scope includes related civil works. The project has started in 2001 and is being completed in a number of phases for Tabreed, with Tebodin as consultant.

Green Community West Zone (DIP)-District Cooling Infrastructure Work A chilled water network for one of the most prestigious communities in Dubai. The Green Community project is located at Dubai Investment Park, Jebel Ali, South of Dubai, in the UAE. The project consisted of the supply and installation of about 40 km rigid and ecoflex pre-insulated HDPE piping using the latest technologies in electrofusion and butt welding. The project was completed in the end of 2006 for EMICOOL with Al-Futtaim Carillion as consultant. EMPOWER - DIFC 6 Gateway Precinct Buildings Pipeline & Tunnel Works A chilled water system for the world's newest international financial centre. The project consists of the construction, completion and maintenance of the pipeline and tunnel works for the chilled water distribution pipe network at Dubai International Financial Centre (DIFC). The client is EMPOWER and the work is completed in 2006.
Dubai International Airport Expansion (Phase II) - AX324 Chilled Water Package An advanced chilled water system. The project consists of the supply, installation, testing and commissioning of chilled water piping at Concourse II T3 Gallery Area. The pipes installed are carbon steel of the various sizes up to 800mm; the works included the installation of miscellaneous valves and accessories in addition to the supply and fixing of the pipe steel support structures. Working at the basement of Concourse II in a highly busy and confined space posed its challenges regarding to safety and logistic operations. Overseas AST is carrying the job successfully, since 2005, for the Department of Civil Aviation (DCA) with Dar Al-Handasah as the consultant and Thermo LLC. as the main contractor. Dubai International Airport Expansion (Phase II) - AX252 Fuel Farm 280,000 barrels additional storage capacity for one of the world's busiest airports. Completed in 2005, for the Department of Civil Aviation (DCA), the project consisted of the construction of four fuel storage tanks with the associated jet fuel pipelines and electricial and instrumentation works. The project was executed as a JV with Thermo LLC. and the consultant was Dar Al-Handasah.
Miscellaneous Projects at Dubai International Airport 1994 (TD-35); 1996 (TD-40.1, TD-59); 1997 (TD-49, TD-72); 2002 (R747, AX010, AX047); 2003 (AX092, AX086); 2004 (AX094, AX122, R747/2A, AX090); 2005 (AX095, AX412) Since 1994, AST played a major role in the construction of Dubai International Airport. Several projects were executed involving various types of works mainly the supply installation, testing and commissioning of jet fuel hydrant systems, the relocation of fuel lines and the fabrication of steel structures.