DAMAGED CABLE AND EQUIPMENT
Preservation of the watertight integrity of the
ship
In any casualty involving damage to electrical cable
and equipment, electrical circuits may be a hazard if
Simplicity of installation and operation
they remain energized. The circumstances surrounding
Flexibility of application
each case of damage will dictate action to be taken. In
cases of serious damage, remove electrical power, when
Interchangeability of parts and equipment,
necessary, from all cables in the damaged area. This is
minimum weight and space requirements
to prevent the ignition of combustible liquids and gases.
Continued operations, however, may require the
The ability to accomplish the desired functions
reestablishment of power to undamaged circuits. This
The casualty power system is a temporary means of
may include cables that extend through damaged areas.
providing power. It is not a means of making temporary
In some cases, splices may be made or temporary
repairs. The system is purposely limited in its scope to
jumpers may be run to reestablish power to the required
retain effectiveness. The more equipment added and the
circuits. Lighting circuits are not to be disregarded.
more the system is expanded, the greater the possibility
This is because damage control activities can be
of error in making connections. Also, the possibility of
seriously handicapped or rendered impossible by
faults at relatively unimportant equipment can cause
inadequate lighting.
loss of power at vital equipment. It is also probable that
the casualty power system, if expanded, would be
Damaged electrical equipment should be isolated
burdened with miscellaneous loads at a time when its
from all available sources of power. In the case of a
damaged switchboard, all circuits feeding to the
use would be essential for vital loads.
switchboard from remote sources should be
The schematic diagram for an electrical casualty
de-energized. They should be tagged out of service at
power system in a typical destroyer is shown in figure
the source.
14-11. The system contains no permanently installed
CASUALTY POWER SYSTEM
cables, except for vertical risers and bulkhead terminals.
The risers are installed to carry circuits through decks
The casualty power system is limited to minimal
without impairing the watertight integrity of the ship. A
electrical facilities required to keep the ship afloat in the
riser consists of a LSTSGU-75 cable extending from
event of damage and to get it out of a danger area.
one deck to another with a riser terminal connected to
Important features of the casualty power system include
each end for attachment of portable cables.
the following:
Figure 14-11.--ElectricaI casualty power system.
14-21
