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Blast protection and explosion protection are the terms used to describe the application of protection and defence systems against both intentional and unintentional explosions and blasts, including bombs.
The table below shows the blast effects of 0.45kg of high explosives detonating at varying distances.
|Distance from explosion (m)||psi (pound per square inch)||kN/m²|
The table below shows the typical resulting effects of varying blast forces.
|psi (pound per square inch)||kN/m²||Effect|
|0.5 - 1||3.5 - 7||Shatter glass|
|1 - 2||7 - 14||Shatter or buckle steel and aluminium panels|
|2 - 3||14 - 21||Shatter concrete block walls|
|7 - 8||49 - 56||Shear brick walls|
|10 - 12||70 - 84||Most buildings destroyed|
Many modern day facilities present high risks of unintentional blasts or explosions occurring, in particular facilities housing high voltage power transformers and those that have highly combustible fuels and materials on-site. Common facilities that unintentional blasts and explosions occur in include:
It is essential that such facilities are sufficiently explosion and blast protected, in order to not only protect the personnel in these areas from injury and death, but also ensure that upon an explosion occurring, disruption and downtime is minimised.
Devastatingly high explosive attacks by terrorist organisations have become very common around the world in recent years. Such blast and explosive attacks on public places are not only designed to cause severe injury to people, but also shock and disruption to the economy. Therefore sufficient blast protection of such facilities is paramount.
Common terrorist targets include:
Estimated losses for the World Trade Centre terrorist attacks in the USA in 2001 were as follows:
Velocity of detonation is greater than 3,000 feet per second
Velocity of detonation is less than 3,000 feet per second
To learn more about how your business should be protected against blasts and explosions, please get in touch with a member of our team today - we'd be happy to help.