CCN1 Gas Safety Regulations 2

Question 1

What are the three Gas Industry Unsafe Situations Procedures (GIUSP) classifications?

Accepted Answer

Immediately Dangerous (ID), At Risk (AR), and Not to Current Standards (NCS)

Answer

The Gas Industry Unsafe Situations Procedures define three classifications: Immediately Dangerous (ID) — risk to life; At Risk (AR) — not immediately dangerous but could become so; and Not to Current Standards (NCS) — not meeting current standards but safe in the short term.

Question 2

What action is taken for an 'At Risk' (AR) gas appliance?

Accepted Answer

Warn the user, provide written warning, and advise the appliance should not be used until repaired

Answer

For an AR situation, the engineer advises the user of the risk, provides a written warning notice, and recommends the appliance is not used until repaired. If the user refuses repair, the engineer should disconnect with their agreement.

Question 3

What does 'Not to Current Standards' (NCS) mean in the GIUSP classification?

Accepted Answer

The appliance or installation does not meet current standards but presents no immediate or near-term risk — the owner should update when practicable

Answer

NCS means the installation does not meet current standards (e.g. it was installed under older regulations), but is not unsafe in the short term. The owner should be advised to update the installation when practicable.

Question 4

Under the GSIUR 1998, what must a Gas Safe engineer carry at all times?

Accepted Answer

Their Gas Safe ID card showing their registration number and the appliance types they are competent to work on

Answer

Gas Safe engineers must carry their Gas Safe ID card, which shows their registration number and the specific appliance categories they are competent to work on. Customers have the right to check the card.

Question 5

What duty does a Gas Safe engineer have if they suspect a gas escape in a property they are visiting?

Accepted Answer

Follow the gas emergency procedure: ventilate, warn occupants, turn off the gas supply at the meter if safe, and contact the National Gas Emergency Service (0800 111 999)

Answer

If a gas escape is suspected, the engineer must follow the standard gas emergency procedure: ventilate by opening windows and doors, warn occupants, turn off the gas at the meter if accessible, avoid creating ignition sources, and call 0800 111 999.

ACS CCN1 Practice Test

ACS CCN1 Practice Test

CCN1 Gas Safety Regulations 2