Fire Hazard And Protection

Question 1

fire hazards attached to any specific material are twofold:

Answer 1

-own basic characteristics
-way it is stored, handled and processed will involve certain hazards which would not arise if the material remained untouched

Question 2

Flash point

Answer 2

When subjected to an increase in temperature most substances produce gases/vapours. As the temperature increases so does the volume of gas/vapour produced, until it reaches the point where, if a source of ignition is introduced, it will burn (or explode – an explosion is a form of rapid burning). This is the flash point

Question 3

Auto ignition temperature

Answer 3

temperature at which (given a presence of oxygen, such as in the atmosphere) the liquid will self-ignite.

Question 4

When does the FP of kerosene, white spirit, paraffin wax and linseed oil become of prime importance?

Answer 4

When the substances are used in a process involving the use of heat which raises their temperatures to greater than FP in circumstances where the substance is in contact with air.

Question 5

Legislation of flammable

Answer 5

-Control of Substances Hazardous to Health (COSHH) Regulations 2002
-Dangerous Substances and Explosive Atmospheres Regulations 2002

Question 6

The construction of the building should:

Answer 6

-minimise the contribution to fire from the building fabric;

-restrict fire to the room of origin;
compartmentation- Fire is confined to the compartment of origin
Grading - the time to failure when exposed to a furnace following a specific temperature/time relationship.

-preserve the structure;

-restrict external fire spread.

Question 7

Fire performance various building materials

Answer 7

Check table 2.2

Question 8

Metal faced composite insulated panel - other names

Answer 8

-sandwich panels
-built up cladding systems
-composite panels
-site assembled panels
-factory produced panels

Question 9

Common use for composite panels

Answer 9

external wall claddings in industrial and some commercial buildings;
roof cladding in industrial buildings;
internal enclosures in food and pharmaceutical factories;
compartment walls;
cold store constructions; and
acoustic barriers.

Question 10

two large-scale tests to evaluate the performance of panel systems

Answer 10

1.Loss Prevention Standard (LPS) 1181
evaluate the performance of sandwich panel systems to assess their contribution to fire growth. Panels satisfying the requirements of LPS 1181 will not make a significant contribution to fire growth.

2. Loss Prevention Standard (LPS) 1208
   the standard for evaluating the fire resistance of an element of construction with specific application to compartment walls and floors.