Good confined space entry procedure requires the use of a pumped portable detector to check the space is safety to enter. But some detectors don’t have pumps built in, in which case, an aspirator should be used. An aspirator is a manual system for drawing the air through a tube to the sensor, and it can work well. However, it is something that requires practice to give confidence that you are doing it right.
Despite the significant amount that has been published about the dangers of confined space entry, recent evidence in the news suggests that people still do not fully understand the risks or take appropriate precautions. In the news this week, Dorset farm owner has been fined for serious safety failings after one of his workers died following exposure to toxic gases escaping from a tank during tank maintenance.