Gas Safe ACS - Accredited Certification Scheme Emergency Actions and Procedures Questions and Answers — Questions and Answers
Question 1: Upon arriving at a domestic property, you immediately smell gas. What is the first and most critical action you should take?
- Perform a tightness test on the gas installation.
- Turn off the gas at the emergency control valve (ECV) and ventilate the property. (Correct answer)
- Identify the source of the leak using leak detection fluid.
- Immediately call the National Gas Emergency Service and await their arrival before taking any action.
Correct answer: Turn off the gas at the emergency control valve (ECV) and ventilate the property.
The primary responsibility in a potential gas escape situation is to make the situation safe. This involves turning off the gas supply at the Emergency Control Valve (ECV) and ventilating the property by opening doors and windows to disperse any accumulated gas. Other actions like tightness testing or identifying the source are secondary to ensuring immediate safety. Calling the emergency service is vital, but shutting off the supply if it is safe to do so is the immediate priority.
Question 2: According to the Gas Industry Unsafe Situations Procedure (GIUSP), how should an appliance be classified if it has a fault that poses an immediate danger to life or property if it is left connected to the gas supply?
- At Risk (AR)
- Not to Current Standards (NCS)
- Immediately Dangerous (ID) (Correct answer)
- Requires Urgent Attention (RUA)
Correct answer: Immediately Dangerous (ID)
The Gas Industry Unsafe Situations Procedure (GIUSP) categorises unsafe situations to ensure a consistent approach by engineers. An installation that is considered an immediate danger to life or property is classified as 'Immediately Dangerous' (ID). 'At Risk' (AR) is for situations that could become dangerous, and 'Not to Current Standards' (NCS) is for installations that are safe but don't meet current standards.
Question 3: A customer refuses you permission to disconnect an appliance that you have classified as 'Immediately Dangerous' (ID). What is the correct procedure to follow for a Natural Gas installation?
- Disconnect the appliance anyway, as you have a duty of care.
- Leave a warning notice on the appliance and inform the customer of the risks.
- Contact the Health and Safety Executive (HSE) to report the non-compliance.
- Inform the customer of the danger, apply a 'Danger Do Not Use' label, and immediately report the situation to the National Gas Emergency Service. (Correct answer)
Correct answer: Inform the customer of the danger, apply a 'Danger Do Not Use' label, and immediately report the situation to the National Gas Emergency Service.
If a customer refuses permission to disconnect an 'Immediately Dangerous' appliance, the engineer cannot force the disconnection. The correct procedure is to clearly explain the danger, apply warning labels, and immediately contact the National Gas Emergency Service Provider (ESP). The ESP has the legal powers to enter the premises and make the situation safe, which may include disconnecting the supply.
Question 4: You are called to a property where a carbon monoxide (CO) alarm has been activated. The occupants are feeling unwell. After ensuring the property is ventilated and the occupants are safe, what is a critical immediate action regarding the gas supply?
- Reset the CO alarm and monitor the situation.
- Advise the occupants to see their GP.
- Turn off all gas appliances and the gas supply at the emergency control valve. (Correct answer)
- Begin a full combustion performance analysis on the boiler.
Correct answer: Turn off all gas appliances and the gas supply at the emergency control valve.
When a CO alarm activates and occupants are symptomatic, the situation must be treated as a serious emergency. The immediate priority is to prevent any further production of CO. This is achieved by turning off all gas appliances and isolating the gas supply at the emergency control valve (ECV). Evacuating the property and seeking medical attention are also crucial steps, but isolating the potential source is a key responsibility for the attending engineer.
Question 5: Under which regulation must a Gas Safe registered engineer report a dangerous gas fitting that could cause death, loss of consciousness, or hospital treatment due to its design, installation, or servicing?
- Gas Safety (Installation and Use) Regulations 1998
- The Health and Safety at Work etc. Act 1974
- Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR) (Correct answer)
- The Building Regulations 2010
Correct answer: Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR)
The Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013 (RIDDOR) places a legal duty on Gas Safe registered engineers to report certain dangerous gas fittings to the Health and Safety Executive (HSE). Specifically, Regulation 11(2) covers gas fittings that are dangerous to an extent that people could die, lose consciousness or require hospital treatment.
Question 6: Which of the following actions should be AVOIDED in a property where a gas leak is suspected?
- Opening all doors and windows to the outside.
- Operating a light switch to improve visibility. (Correct answer)
- Extinguishing any naked flames, such as candles.
- Turning off the gas supply at the meter's emergency control valve.
Correct answer: Operating a light switch to improve visibility.
When a gas leak is suspected, it is critical to avoid creating any potential ignition sources. Operating an electrical switch, whether turning it on or off, can create a spark which could ignite an accumulation of gas, leading to a fire or explosion. Actions like ventilating the property, extinguishing flames, and shutting off the gas supply are all essential safety steps.
Gas Safe ACS - Accredited Certification Scheme Emergency Actions and Procedures Questions and Answers
Upon arriving at a domestic property, you immediately smell gas.
What is the first and most critical action you should take?