Our staff have a vast experience of specialist measurement techniques used on conventional power plant. They have developed innovative instrumentation for major utilities and multi-national companies.
	A typical example is the leakage detection system developed to measure the cross contamination of clean flue gas in a flue gas desulphurisation plant. In this system a pulse of tracer gas is mixed into the flue gases upstream of the potential leakage source (usually a regenerative heater) and the time difference in arrival at some downstream position allows the amount of gas that has leaked to be measured. Our staff not only developed the technique and a special tracer detection instrument but carried out an analysis of the system in order that the errors associated with the technique could be quantified. This has allowed our clients to offer quality assurance for the desulphurisation systems.
	The instruments shown here were developed, designed and built by our associated company PET for the task outlined above. The success of the process led to the development of a similar detector designed for very rapid response to allow investigation of the internal leakage paths occurring in regenerative air heaters. These are similar to the gas gas heaters, but have very short leakage paths. .

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