NEBOSH CC Fire Prevention in Construction 2

Question 1

How long after completion of hot work should a fire watch typically be maintained?

Accepted Answer

At least 60 minutes (1 hour) after work finishes

Answer

A fire watch must be maintained for at least 60 minutes after hot work finishes. Smouldering fires in concealed voids or within materials can remain undetected and develop into major fires after the workers have left the area.

Question 2

What is the minimum requirement for fire fighting equipment that must be available at all construction sites?

Accepted Answer

Suitable fire extinguishers in sufficient numbers and type for the risks present

Answer

Construction sites must have sufficient suitable fire extinguishers for the types of fire risk present. The selection must be based on the materials present (Class A, B, etc.) and the layout of the site. Extinguishers must be regularly maintained.

Question 3

What must a fire risk assessment on a construction site identify?

Accepted Answer

Fire hazards, people at risk, existing controls, adequacy of means of escape and fire fighting equipment

Answer

A fire risk assessment must identify fire hazards (sources of ignition, fuel and oxygen), people at risk (including visitors and contractors), evaluate existing controls, and ensure adequate means of escape, fire detection and fighting equipment.

Question 4

What is the primary hazard from storing LPG cylinders in an unventilated site hut?

Accepted Answer

Gas leaks accumulating to form an explosive atmosphere that can be ignited by a small spark

Answer

LPG is heavier than air and will accumulate at low level in an unventilated space. Even a small leak can create an explosive atmosphere. A small ignition source (electrical spark, cigarette lighter) can then cause a catastrophic explosion.

Question 5

What does the term 'means of escape' refer to in fire safety?

Accepted Answer

The protected routes by which occupants can evacuate a building safely during a fire

Answer

Means of escape refers to the structural and organisational provision for people to leave a building safely during a fire, including escape routes, emergency lighting, exit signs, fire doors and assembly points.

NEBOSH Construction Certificate Practice Test

NEBOSH Construction Certificate Practice Test

NEBOSH CC Fire Prevention in Construction 2