On most production facilities the number of industrial flammable gas bottles allowed on-site at any one time is kept to a low number. They are always stored away from locations where heavy lifting operations take place, where the risk of dropped objects increases dramatically. Potential sources of radiant heat are also avoided. On most production facilities the number of industrial flammable gas bottles allowed on-site at any one time is kept to a low number. They are always stored away from locations where heavy lifting operations take place, where the risk of dropped objects increases dramatically. Potential sources of radiant heat are also avoided. Consider, then, that the annulus of just one gas-lifted well can easily contain the equivalent of over 1,000 industrial-sized gas bottles. Even where downhole annulus safety valves (DH-ASVs) are deployed to minimize the capacity, the volume can still be the equivalent of more than 200 gas bottles per well. And heavy lifts are commonplace in well bays where annulus flowlines connecting the high-pressure lift gas supply header to each individual well are located. The worst safety incident ever to occur in the North Sea was the Piper...