2.3.1 A diving bell should:
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.1 be provided with adequate protection against
mechanical damage during handling operation;
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.2 be equipped with one extra lifting point designed
to take the entire dry weight of the bell including ballast and equipment
as well as the weight of the divers staying on in the bell;
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.3 be equipped with means whereby each diver using
the bell is able to enter and leave it safely as well as with means
for taking an unconscious diver up into a dry bell.
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.4 be fitted with a manifold at a suitable point
close to the main lifting attachment which should include connections
for the following services:
The manifold should be clearly marked and suitably protected.
2.3.2 Diving bell doors should be so designed
as to prevent accidental opening during normal operations. All doors
should be so designed that locking mechanisms, if provided, can be
operated from both sides.
2.3.3 A diving bell should provide a suitable
environment and facilities for the persons who use it, having regard
to the type and duration of the diving operation.
2.3.4 Each diving bell should have view ports
that as far as practicable allow an occupant to observe divers outside
the bell.
2.3.5 Diving bells should be so designed as to
provide adequate space for the number of occupants envisaged, together
with the equipment.