. Opening of pipe work by breaking flanges and union by moving blanks or by removal of bonnets
and glands from valves.
. The opening of process machinery, both driver and driven. This includes topping up and re-
packing of associated glands.
. The opening of equipment, such as vessels, towers, drums, condensers, filters, furnace and tanks.
. Painting, lagging and erection and dismantling of scaffolding.