ACS Emergency Procedures

Question 1

What is the first action to take if a gas escape is suspected in a property?

Accepted Answer

Do not operate any electrical switches; open windows and doors; turn off the gas at the emergency control valve; call 0800 111 999

Answer

Open the gas meter box and check for a leak

Answer

Call the local gas board and wait for their arrival

Answer

Light a match to check whether gas is present

Question 2

What is the emergency gas service telephone number in Great Britain?

Accepted Answer

0800 111 999

Answer

999

Answer

0300 123 1234

Answer

112

Question 3

If CO is suspected in a building, what immediate actions should be taken?

Accepted Answer

Evacuate all occupants immediately, call 999, do not re-enter, seek medical attention for anyone showing symptoms, and call the gas emergency service

Answer

Open one window and investigate the source yourself

Answer

Turn off all gas appliances and remain in the building

Answer

Call the landlord or building manager first

Question 4

When a gas engineer attends a property following a CO alarm activation, what is their first priority?

Accepted Answer

Ensure all occupants are safe and out of the building before entering to investigate, carrying a CO monitor personally

Answer

Identify the source of CO using a flue gas analyser

Answer

Silence the CO alarm before investigating

Answer

Check the boiler service record before entering

Question 5

What procedure should a gas engineer follow if they discover an Immediately Dangerous (ID) gas situation at a customer's property?

Accepted Answer

Inform the customer, obtain consent to make safe (disconnect), issue a Gas Safe warning notice, and document the situation

Answer

Repair the fault immediately without informing the customer

Answer

Leave the property without taking action

Answer

Call the HSE before taking any action on site

Question 6

What should a gas engineer do if they smell gas while working inside a property?

Accepted Answer

Stop work immediately, do not operate any electrical equipment, evacuate the building, isolate the gas supply externally if safe, and call 0800 111 999

Answer

Continue working with increased caution and ventilate by opening a nearby window

Answer

Test for gas using a lighter to check the concentration

Answer

Call the customer's landlord before taking any safety action