When loading cargo the deck isolating valve required by regulation 62.10.8 should be closed and
the inert gas plant may be shut down unless other cargo tanks are
being deballasted simultaneously. All openings to the cargo tanks
except the connections to the mast risers or equivalent venting arrangements
should be kept closed to minimize flammable vapour on deck. Before
loading commences, the flame screens in the mast risers or equivalent
venting arrangements should be inspected and any stop valves isolating
the cargo tanks from the inert gas main locked in the open position.