From Doubt to Skepticism

摘要

Somewhere in every well-equipped chemical plant or laboratory there will be at least one safety shower, because accidents do happen. When triggered, this shower will dump a lot of water in a short time on whoever is underneath, Ideally, this shower is never needed; but when it is, it has to be in working order. To that end, it has to be tested regularly and regulations require that the testing be documented.