Abbfab services ltd - leading fabricators of pipework & associated mechanical services.

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Silencer Fabrication Case Study

Technical situation:

Abbfab Services were awarded a contract to fabricate four valve silencers in Duplex (UNS 31803) material on behalf of a long established international Company specialising in the supply of internationally accredited safety and control valves.

The purpose of these silencers is to provide noise attenuation by being fitted downstream of the regulator, they are zero maintenance devices and each one is custom built for a particular application.

Our solution:

Working closely with the client at all stages of the project, Abbfab procured all materials to be used in the construction of the silencers (all materials were certified in accordance with EN 10204) and arranged for sub-contractors to undertake the production of the internal components of the silencers, the inspection of which was undertaken by Abbfab Services prior to being assembled into silencer bodies.

Fabrication and welding was undertaken in accordance with the issued Quality Assurance Plan and all welding was done in accordance with previously approved weld procedures, in accordance with the requirements of the ASME Boiler & Pressure Vessel Code and upon completion, Non-Destructive Examination was undertaken (both radiographic and dye penetrant) to the requirements of the design code – all welding passed with zero defects.

Upon completion the silencers were shipped to the clients assembly and testing facility for final assembly. A full documentation dossier was supplied, with all NDE reports, welder qualifications and fully indexed material certification, to the client.

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