Hazards in confined spaces can reach out and touch you even if you haven’t taken a sniff inside. MAC is warned more than once to beware of ‘confined spaces that aren’t’ and here’s another one from the International Association of Drilling Contractors site, IADC, to add to them.
Vessel maintenance was being conducted on an accommodation barge. Preparation was being made to enter a tank at the base of a column to undertake quarterly planned maintenance of the leakage detection system. The injured party removed a manhole cover to gain vertical access into tank at the base of the column. Within one minute of removing the manhole cover the gas detector alarm sounded and the IP lost consciousness on the floor of column next to the open tank hatch.