Silo Flashcards
A silo can store a wide variety of materials give 4 examples
Silage. Grain. Powders. Pellets or crops. Cement. Woodchip.
A silo may be manufactured from a range of materials give 4 examples of materials
Steel.
Aluminium.
Concrete.
Fibreglass.
Silo content a silo may create a toxic, flammable, oxygen deficient or explosive atmosphere what could happen by opening up a hatch or door
This may create an explosive mixture
Silo firefighters should be aware of the contents bridging explain this definition
This phenomena is whereby a seemingly solid material is only a bridge over a void the contents have collapsed or have been emptied from below
Silo construction the nature of construction makes access and egress from a silo extremely limited what else is virtually non-existent within a silo
Natural light.
Ventilation.
Oxygen limiting silos or controlled atmosphere silos have a greater risk of what when involved in a fire
Backdraught.
Explosion.
Can crews enter a working silo or work beneath one during training
No under no circumstances
Silo when can personnel enter a silo to perform a rescue
Personnel must not enter a silo unless there is an immediate threat of serious injury or loss of life
What is the minimum rank for leading a crew entering into a silo
The crew should be led by a minimum of a leading firefighter
%%%%
Where a thermal image camera or a fixed temperature gauge indicates a rapid rise in temperature at a silo the entire contents may be involved what should crews do
Withdraw from the hazard area
If a silo has a discharge control mechanism it must be in the closed position what must the incident commander do to ensure it remains this way
A firefighter must be nominated fully briefed and remain adjacent to the mechanism at all times throughout the incident
What may the application of foam or water cause the contents of a silo to do
This may cause the content to swell and has the potential to cause structural collapse due to the increase in weight volume and pressure on the internal walls
Fires in oxygen limiting silos are rare these pose a greater risk of explosion an alternative method of extinguishment is to do what
By taking advice from the on-site responsible person all doors and hatches can be closed to starve the fire of any remaining oxygen
Oxygen limiting silos on fire are rare the introduction of water or foam may cause what
This may entrain Air and increase the fire intensity or risk of explosion
