5.7.1 Alarms and indicators should be installed
in accordance with the recommendations of the Organization.footnote
5.7.2 Each unit should be provided with a general
alarm system so installed as to be clearly perceptible in all normally
accessible parts of the unit, including open decks. Control stations
for activating the alarm should be installed to the satisfaction of
the Administration. The signals used should be limited to: general
emergency, toxic gas (hydrogen sulphide), combustible gas, fire alarm,
and abandon unit signals. These signals should be described in the
muster list and operations manual.
5.7.3 A public address system should be provided.
The system should be clearly audible in all spaces that are normally
accessible to personnel during routine operations. It should be possible
to make announcements at the following locations (if provided): Emergency
response centre, navigation bridge, engine control room, ballast control
station, jacking control station, and a location near the drilling
console.
5.7.4 The signals given over the general alarm
system should be supplemented by instructions over the public address
system.
5.7.5 Internal means of communication should be
available for transfer of information between all spaces where action
may be necessary in case of an emergency.
5.7.6 Audible signals in high noise areas should
be supplemented with visual signals. Internal means of communication
should be available for transfer of information between all spaces
where action may be necessary in case of an emergency.