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Hazardex 2017 Conference - Do your gas alarm levels keep you safe?

Author : Nick Dajda - Crowcon

04 November 2016

Setting safe gas alarms is important for many reasons, but it is made difficult because the regulations for portable gas detection are not the same as those for fixed systems. Different gas hazards require monitoring on different scales; ppm level for toxic risk; %LEL level for flammable risk; % vol. level for oxygen risk. This adds to an already complex situation.

This Crowcon presentation considers the EH40 standard defining portable detector alarm levels, and examine how the  WELs, STELs, LTELs defined in the standard are appropriated into law. The concept of time weighted average (TWA) and how this is applied in practice is explained. Available guidance for fixed systems is also reviewed. The additional complications of gas detection on sites that consistently have background gas levels are considered, and the importance of site-specific risk assessment explained.

About the Speaker

Nick Dajda is a Business Development Manager at Crowcon Detection Instruments Ltd, responsible for product managing the company’s range of portable gas detection equipment. Nick has 13 years experience with gas detection and chemical analysis tools used in a wide range of different industries.


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