6.13 DC Electrical - 6.13 DC Electrical

Question 1

Casualty power

Answer 1

Installed casualty power system enables repair party personnel to quickly respond to a damaged electrical system.

Not intended as a primary power supply

Question 2

Benefits of Casualty Power systems

Answer 2

Preservation of watertight integrity
Simplicity of installation and operation
Flexibility of application
Interchangeability of parts and equipment

Question 3

Casualty power examples/uses

Answer 3

External Communications
Fire pump motor controllers
CIWS/NATO Sea Sparrow Missile (NSSM) Systems, Rolling Airframe Missile (RAM) and associated support equipment
Interior communication switchboards and power panels
Lighting system transformers
Power panels supplying vital propulsion and auxiliaries
Power distribution panels serving DC equipment
AFFF station control panels
Steering gear system power panel

Question 4

Casualty power components

Answer 4

Portable cables
Bulkhead terminals
Riser
Switchboard terminals
Casualty power circuit breakers

Question 5

CoC responsible for rigging Casualty Power

Answer 5

CO
CHENG
Repair lockers
OOD

Question 6

Benefits of Casualty Power systems

Answer 6

• Preservation of watertight integrity
• Simplicity of installation and operation
• Flexibility of application
• Interchangeability of parts and equipment

Question 7

Examples of Casualty Power loads

Answer 7

• External Communications
• Fire pump motor controllers
• CIWS/NATO Sea Sparrow Missile (NSSM) Systems, Rolling Airframe Missile (RAM) and associated support equipment
• Interior communication switchboards and power panels
• Lighting system transformers
• Power panels supplying vital propulsion and auxiliaries
• Power distribution panels serving DC equipment
• AFFF station control panels
• Steering gear system power panel

Question 8

How to rig Casualty Power

Answer 8

Connect horizontal cables Load to Source starting with the riser or bulkhead terminal at the casualty and then towards the switchboard riser where the power will be supplied

Question 9

Safety Considerations of Casualty Power

Answer 9

All NSTM 300 electrical safety requirements apply

Proper PPE

Careful coordination and communications with Engineering Control, Damage Control Central, and local repair parties is essential

All personnel participating in casualty power operations must be trained and qualified

Ensure equipment is properly de-energized before attempting repairs, connections or disconnection from either the regular electrical distribution system or from casualty power