The use of toxic gas detection, assuming it is required, will follow from the requirements of the risk assessment. There are various factors that should be considered when setting alarm levels on toxic gas detectors to minimize the risk of potentially dangerous exposure levels to personnel in a particular area of the workplace.
In many situations, however, discussion of these factors either does not occur at all or is extremely brief, and “default” values are typically used. While these values may well be adequate for the task required, i.e. to satisfy the risk assessment or safety case, a more thorough analysis of requirements and the actual circumstances would prove beneficial and is likely to lead to more robust risk mitigation.
The following factors relating to setting an alarm should be considered when installing any type of gas detector:
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