Final answer:
When a Gas Technician finds an immediately hazardous appliance, they should shut off the gas supply and report the hazard to the appropriate authority to ensure safety and follow protocols.
Step-by-step explanation:
If a Gas Technician finds an appliance that presents an immediate hazard, the correct course of action is to b) Immediately shut off the gas supply to the appliance and report the hazard to the appropriate authority. This is because leaving a hazardous situation unaddressed can lead to severe consequences, such as fires, explosions, or gas leaks, which can be extremely dangerous to the property and occupants. The relevant safety instructions emphasize the importance of addressing electrical and gas hazards immediately, such as worn insulation or a broken earth/ground connection that can lead to shocks or the need for the circuit breaker to trip.
A gas technician needs to follow safety protocols, which include shutting off the gas to mitigate the risk and notifying authorities to ensure proper follow-up and repair. The three-wire system, circuit breakers, and fuses, as well as the ground fault circuit interrupter (GFCI), are all safety devices mentioned that are designed to prevent shock and thermal hazards, highlighting the necessity of proper safety measures in appliances.