806 Incidents involving Fireworks or Explosives Flashcards
How are Explosives defined?
Explosives are defined by the Health and Safety Executive (HSE) as any material that is capable of undergoing a “self-contained and self-sustained exothermic chemical reaction at a rate that is sufficient to produce substantial pressures” on their surroundings, thus causing physical damage.
How are Explosive Hazards Identified?
Yankee Hazards
What are the two types of Explosive material?
- Detonating explosion is described as when the reaction exceeds the speed of sound.
- Deflagrating explosion below the speed of sound.
What is the most common cause of an accidental explosion?
Gas Leaks
What is the hazardous distance of Fire works?
Propelled 50-100m
Explosion up to 100m Diameter
At what distance can explosives with radio detonators be activated?
60m
Military grade - 600m radio exclusion zone
Who are responsible for the storage of fire works?
Local authority and the HSE for Bulk storage
who should be notified and holds information on explosives storage?
ORPT - Operational Resilience Planning Response Team
How will a yankee hazard appear on the MDT?
Red triangle with a black exclamation mark
What priority message should be sent at a confirmed explosive incident?
“explosives confirmed involved”
What are the maximum legal explosive storage limits?
250KG Fire works in ISO containers for shops
20KG Black powder for licensed gun enthusiasts
What are the Hazard Zones for Explosives?
- 200 metres for explosives up to 250kg or approximately the size of a small car.
- 600 metres for explosives 251kg – 2000kg and any military explosive munitions HD1.2.
- 1000 metres for explosives over 2000kg
What Symbol will be visible on a vehicle carrying explosives?
Orange Plate fixed to front and rear, and a hazard warning diamond fixed to front side and rear of the container
