Huntington WTW

Huntington WTW

Background

Huntington WTW is designated a ‘top tier’ site under the Control of Major Accident Hazards (COMAH)Regulations and is one of the top three sites in the UK in terms of potential impact.

As such there is a high level of intervention from the Health & Safety Executive (HSE) and EnvironmentAgency (EA).

The Huntington WTW project was made up of various improvement projects with a combined value of £35m overall and included Huntington COMAH, pH (chemical dosing facility), intake, power upgrade and waste and site drainage improvements.

The project was part of the £3.6 billion being invested by United Utilities in AMP5 across the North West to improve water quality and the environment by 2015.

Project Scope

The existing PCI thickeners were failing daily causing process problems with the sludge densities and sludge pumping system. Regular transmission and torque problems meant the three units required daily maintenance to keep them operative.

New thickeners were designed to comply within the United Utilities specification. A carbon steel structure was designed, manufactured and treated to comply with the latest WIMES specification, galvanise and paint in this instance.

Maintenance access and safety were paramount to this project as the existing units caused various health and safety issues.

The transmission design was changed to incorporate a shaft mounted unit thus removing chain drives and guards.

Electronic torque limiters were introduced to the process to monitor the values and eliminate shear pins and mechanical sacrificial parts. New access steel work, gantries and handrails were

erected to provide easy access for operators and maintenance creating a safer and healthier environment to work in.

New thickeners were designed to comply within the United Utilities specification. A carbon steel structure was designed, manufactured and treated to comply with the latest WHIMES specification, galvanise and paint in this instance. Maintenance access and safety were paramount to this project as the existing units caused various health and safety issues.

The transmission design was changed to incorporate a shaft mounted unit thus removing chain drives and guards. Electronic torque limiters were introduced to the process to monitor the values and eliminate shear pins and mechanical sacrificial parts.

New access steel work, gantries and handrails were erected to provide easy access for operators and maintenance creating a safer and healthier environment to work in.

Benefits Delivered

Our client regularly visited our works during the project to carry out tests and inspections. The project was a success and delivered great results. The project team developed and maintained excellent working relationships with the various stakeholders associated with the works and affected third parties.

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