Manchester Ship Canal UIDs: SAL 1172 Project at Dallas Court

Franklyn Yates Engineering were commissioned by the Galliford Try-Costain-Atkins Joint Venture (GCA JV) on behalf of United Utilities to complete the mechanical installation on the SAL 1172 Project at Dallas Court in Manchester.

This project formed part of a cluster of schemes in the Manchester area as part of United Utilities £3.6 billion AMP5 investment programme across the North West.

The detention tank was constructed within a small site adjacent to Weaste Cemetery on one side with industrial units and offices on the other. Construction involved connecting onto the existing culvert, which transferred flows into the Manchester Ship Canal; a 21m diameter secant piled shaft was installed at a depth of 24m below ground with twin pumped rising mains routed through a congested industrial estate. 

The installation will filter and screen stormwater as well as providing storage. Previously water was directed from the sewer, via a Victorian brick culvert, directly into the Manchester Ship Canal.

Tasks

DETENTION TANK

• Manufacture and installation of DN350 rising mains.
• Manufacture and installation of DN150 rising main.
• Manufacture and installation of 1No DN150 tremmie pipe.
• Installation of 2No DN350 storm pumps.
• Installation of 1No DN150 scavenger pump.
• Installation of 1No stem drive mixing system.
• Pressure testing of all pipework.
• Manufacture and installation of the stainless steel washwater pipework.
• Installation of the spray head system.

VALVE CHAMBER

• Manufacture and installation of the DN350 and DN200 epoxy coated pump return pipework.
• Installation of the DN350 valves.
• Installation of the DN200 valves.
• Installation of the DN350 non return valves.
• Installation of the DN200 non return valves.

RAS PUMP AREA

• Manufacture and installation of stainless steel pipework and installation of RAS pumps and associated inline equipment.
• Installation of the 3No vertical pump columns and 3No pumps.
• Manufacture and installation of DN600 pipework.

WASHWATER BUILDING & HEADER

• Manufacture and installation of DN80 stainless steel washwater booster suction and discharge manifold.
• Manufacture and installation of 9No DN80 washwater below ground feed pipework systems from the washwater building to the detention tank.
• Installation of the washwater buffer tank.
• Installation of the washwater duty/standby booster skid.
• Installation of the washwater hose reel.

Results

FYEL utilised an on-site fabrication area to manufacture all of the stainless steel pipework on site. This method was adopted due to time constraints with the project completion date and ensured a fast turnaround on all fabricated items.

FYEL worked closely with the GCA project management and design team to bring the project together on time and within budget.

Further details can be found here: http://www.waterprojectsonline.com/case_studies/2016/UU_SAL_172_2016.pdf