14.1.1 In an autonomous or free-swimming submersible the emergency source of
power should be completely separate from the main power source and should be capable
of maintaining the communication systems throughout the life-support period. Where
applicable, emergency source of power should be capable of providing power for water
leakage monitoring devices, and maintaining a breathable atmosphere.
14.1.2 Emergency power supply must be capable of returning the divers from the
maximum system operating depth to the surface.
14.1.3 Emergency power supply shall be capable of feeding the following critical
services:
- Emergency lighting;
- Emergency communication;
- Emergency heating;
- Environmental monitoring systems;
- Control/alarms for emergency systems;
- Emergency handling of the bell.