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Structural Fire Protection |
Passive fire protection is designed to
prevent the passage of smoke and flames passing freely through
a building. Also it is designed to maintain the integrity
of a building preventing it’s breakdown or collapse
in a fire situation. There are various ways in which this
can be achieved: |
| Fire barriers |
To prevent the passage of smoke and flames,
fire
barriers are installed particularly around escape passages
and fire fighting lobby’s. They can be cut and fit around
services which penetrate fire resisting elements of structure
and consist of materials such as mineral wool made from volcanic
rock, which resist, not only the passage of smoke and flames
but also offer thermal insulation preventing the transfer
of heat from one area to another. These products are tested
to BS 476 parts 20-24. |
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| Fire board, cementitious & mineral fibre sprayed systems,
intumescent paint |
Steel structures will distort and may
collapse in a fire. To prevent the collapse of steel structures
in a fire they are protected either by, fire board encasement,
cementitious or mineral fibre sprayed systems or intumescent
paint. These systems are designed to prevent the temperature
of the steel reaching it’s critical state (550 –
600 degrees C). These products are tested to BS 476 part 21. |
| Flame retardant finishes |
Application of flame
retardant finishes to common areas of a building to prevent
the spread of flame and smoke. These coatings are tested to
BS 476 parts 6 and 7, are self extinguishing and will not
support the spread of flame. |
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