Electrical MT GDP

What are the three components of the fire triangle?

• Fuel, air, electricity
• Oxygen, fuel, ignition
• Voltage, gas, heat
• Current, arc, spark

What happens when air or gas becomes highly ionised between conductors?

• Resistance increases
• Arcing occurs
• Cooling takes place
• Voltage drops

What is the UFL (Upper Flammability Limit)?

• The hottest gas state
• Maximum pressure allowed
• Highest concentration where gas no longer ignites
• Lowest voltage to cause arc

Which factor influences explosive potential?

• Color of the vapor
• Concentration of gas in air
• Weight of container
• Ambient light

Too little fuel in air causes...

• Overheating
• Flame will not propagate
• Instant ignition
• Spark delay

Too much fuel can prevent ignition due to...

• Excessive cooling
• Displacement of oxygen
• Pressure increase
• Surface tension

What is Zone 0 in area classification?

• Area where gas may leak accidentally
• Continuously explosive gas-air mixture
• Unlikely gas exposure
• Safe for open flame

Which zone has the lowest probability of gas-air mixture presence?

• Zone 0
• Zone 1
• Zone 2
• Zone 4

What is the goal of area classification?

• Eliminate all risks
• Reduce electricity costs
• Define acceptable ignition risks
• Increase fuel usage

What is the current main operation mode of the PT Badak NGL electrical system?

• Modular
• Hybrid
• Isolated
• Integrated