13.4.1 The vapour space of
each cargo tank should be provided with a pressure gauge which should
incorporate an indicator in the control position required by 13.1.3. In addition, a high-pressure
alarm and, if vacuum protection is required, a low-pressure alarm,
should be provided on the navigating bridge. Maximum and minimum allowable
pressures should be marked on the indicators. The alarms should be
activated before the set pressures are reached. For cargo tanks fitted
with pressure relief valves, which can be set at more than one set
pressure in accordance with 8.2.6,
high-pressure alarms should be provided for each set pressure.
13.4.2 Each cargo pump discharge
line and each liquid and vapour cargo manifold should be provided
with at least one pressure gauge.
13.4.3 Local-reading manifold
pressure gauges should be provided to indicate the pressure between
stop valves and hose connections to the shore.
13.4.4 Hold spaces and interbarrier
spaces without open connection to the atmosphere should be provided
with pressure gauges.