Have you just covered what is expected from you when it comes to electrical safety? If yes, then I have prepared a series of tests to help you see just how safe you will be when it comes to the field. Below is part one of four tests for an aspiring electrical person. Give it a shot and see just how much you understand. All the best!
Blue
Brown
Yellow/Green
Black
The Circuit breaker.
The thermal overload
The isolating switch.
The fuse.
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
A hydrometer.
A thermometer.
An ammeter
Alarm panels.
Pumps turned by electric motors.
Emergency generator starter motors.
Accommodation lighting.
Transformers.
Breakers.
Batteries.
Bus bars.
Motorized valve.
Solenoid valve.
Breaker.
Thermostatic valve.
A megger.
A motor meter.
A voltmeter.
An ammeter
Electricity flow.
Electrical power.
Resistance.
Electrical pressure.
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.
Thermometer
Thermocouple
Strain gauge
Ionization type
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
Potassium hydroxide.
Hydrochloric acid
Acetic acid.
Sulphuric acid.
Hand torches.
Emergency lighting.
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.
Running.
Hot after stopping.
Cooled down to hand-warm.
Eight
Two
Four
Six
Wait!
Here's an interesting quiz for you.