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Water sampler for gas detection

14 December 2009

Hazard detection specialist Groveley Detection has produced a custom water sampling gas detection system for chemical manufacturer LyondellBasell at Carrington, Manchester. Groveley is a designer and manufacturer of gas and fire detectors to the global petrochemical industry and was approached to design a sampling system that instantly warned if propylene or ethylene leaked into the process cooling water system.

Water sampler designed to detect gas in cooling system
Water sampler designed to detect gas in cooling system

The result was a unit that takes a continuous sample from the cooling water return line and analyses it for dissolved gas in the water – in which case it instantly sends a signal to the control room to take action.

The system includes a compressed air supply which separates out any potential flammable gases, followed by a series of drying filters and finally an infrared flammable gas detector. All the components were mounted on a stainless steel back plate which allowed the client engineers to position the system on to prearranged mountings and make the final connections.

Groveley design engineer Chris Byatt said: "Our design process involved several types of sample drying and the manufacture of some unique components because it was to be located in a hazardous area."

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