CSCS Fire Safety 4

Question 1

What does the term 'fire load' mean?

Accepted Answer

The total amount of combustible material in a given area, measured in MJ/m²

Answer

Fire load is the total heat energy that would be released if all combustible materials in an area were to burn. It is measured in megajoules per square metre (MJ/m²) and influences fire severity, compartment design, and structural fire resistance.

Question 2

What is a fire risk assessment and when must it be carried out?

Accepted Answer

A systematic evaluation of fire hazards and risks that must be carried out before work starts and reviewed regularly

Answer

Under the RR(FS)O 2005, a fire risk assessment must identify fire hazards, people at risk, evaluate the risks, record significant findings, and plan emergency procedures. It must be carried out before occupation and reviewed regularly or when changes occur.

Question 3

What are the main sources of ignition on a construction site?

Accepted Answer

Hot work, electrical faults, smoking, heating equipment, and arson

Answer

Common ignition sources on construction sites include hot work (welding, cutting, grinding), electrical faults, discarded smoking materials, temporary heating equipment, and deliberate fire-setting (arson). All must be controlled through site management.

Question 4

What is the minimum fire resistance period for a fire door in an escape route?

Accepted Answer

30 minutes (FD30) as a minimum, with higher ratings required in some situations

Answer

Fire doors in escape routes must achieve at least FD30 rating (30 minutes fire resistance). Higher ratings (FD60, FD90, FD120) may be required depending on the building's risk category, height, and compartment strategy.

Question 5

What is the significance of fire stopping in construction?

Accepted Answer

It seals gaps and openings in fire-resistant structures to prevent fire and smoke from spreading through them

Answer

Fire stopping involves sealing penetrations, joints, and gaps in fire-resistant walls and floors (around pipes, cables, ducts) to maintain the fire compartment's integrity and prevent fire and smoke from spreading through these openings.

CSCS Green Card Practice Test

CSCS Green Card Practice Test

CSCS Fire Safety 4