The Circuit breaker.
The thermal overload
The isolating switch.
Fuses protect circuits and people from excess current automatically.
When a fuse fails it is necessary to replace it immediately.
A regularly failing fuse should be replaced with one of a high rating.
After a fuse has failed it restores the current automatically once the fault has been found
Pumps turned by electric motors.
Emergency generator starter motors.
A motor meter.
It will not work if current is less than 8 A
It has a resistance of 8 W
It will work only if current is 8 A
It will melt if current exceeds 8 A
To measure revolutions per minute (RPM).
To measure the direction of shaft rotation.
To measure the relationship between impedance and frequency.
To measure impedance.
It shall be inspected at the earliest opportunity after its arrival on the ship
It is subject to regular formal inspection
Its supply must be suitable for the area where it will be used.
Ship’s Bosun is generally asked to inspect portable electrical equipment.
They do not produce enough light
These lamps are only for domestic application not marine use.
There is a radio interference issue with this light as a result Us Coast Guard has banned the use of CFL.
These lamps are very expensive
By regular testing battery voltage using digital multimeter.
By carrying out 2 to 3 engine start each week.
By checking electrolyte level
By using shell approved battery load tester
Low voltage systems such as telephones.
Emergency generator starting.
Do not operate the machine, but read the manual before reporting to the head of your department
Seek advice from your superior before attempting to operate it.
Ensure that all safety guards and devices are disconnected.
As time is money, the trial and error method shall be used
Steering gear and alarm system
Engine room lighting and bow thrusters
Galley and air conditioning
Sound powered telephone system
Its readiness to perform as specified.
Its environmental noise factor during emergency fire-drills.
Its voltage/current characteristics.
Its compliance with the shipbuilder`s recommendations.
Leave the UMS selector switch in UMS-mode
Any of the mentioned alternatives will meet the requirements.
Switch the UMS selector switch to manual mode and engage the "dead man alarm"
Switch the UMS selector switch to manual mode only
That all operating parameters of the generator set in operation are normal (e.g. exhaust temperatures, lube oil pressure, cooling water temperature etc.)
Visually checking the auxiliary engine that there are no leaks or other obvious operating failures
All parameters as listed under the other alternatives.
That a secondary auxiliary set is switched to automatic standby mode
Cooling system fresh water level, oil level in sump tank, preheating temperature of cylinders, charging level of batteries, diesel in stand-by mode.
That the voltage and the frequency displayed on the emergency switch board is the same as on the main switch board.
That the steam heater or electrical heater in the emergency diesel room is switched on.
That the battery charger is not accidentally kept in ON position, that the door of the generator room is always closed behind you.
Cooled down to ambient temperature.
Hot after stopping.
Cooled down to hand-warm.