Fireworks and explosives Flashcards

1
Q

Hazards

A

1.Contained in metal boxes lead to mass hazard
2, greatest risk when being heated
3 can react to water, grease, chemicalshock leading to detonation
4. Unlikley explosives can be extinguished when ignited
5. Detonations create shock waves and fragmentation
6. Substantial cover does not protect from pressure waves

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2
Q

two types of explosive materials

A

deflagration reaction less speed of sound
detonating higher

describe rate of reaction

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3
Q

MDT

A

red triangle yankee hazard

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4
Q

hazard areas

A

250kg / small car 200m
251-2000kg and military 1.2 600m
over 2000kg 1000m

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5
Q

radios restricted to

A

60m

600m military / malicious devices

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6
Q

explosives defined by Hand S executive as

A

material capable of undergoing a self contained and self exothermic reaction at a rate sufficient to produce pressures on their surroundings

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7
Q

over pressure is

A

blast wave that can kill

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8
Q

solid surface behind you at expolsion…

A

double the over pressure

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9
Q

small domestic firework distance

pyrotechnic element

A

50-100m

100m

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10
Q

who licenses bulk storage fireworks

source of info for re fireworks storage

A

HSE

LA and Fire Safety

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11
Q

whats an aquire and keep cert

A
significant hazard as varying quantities
black powder 
Yankee hazard
ORD on MDT
gun license holders
20kg
metal box
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12
Q

sporting ammunition held by members of public less hazard than aerosols therefore

A

not on MDT

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13
Q

message if explosives

A

Priority “ explosives confirmed involved “

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14
Q

max staorage for fireworks for domstic use in a shop

A

250kg in ISO container

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15
Q

if explosives do not explode they are short lived fires normally

A

90mins

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16
Q

beware turning over ….

A

some bits remain explosive

17
Q
Hazard divisions
HD1.1
HD1.2
HD1.3
HD1.4
HD1.5
HD1.6
A
  1. 1 mass explosion destroy container catastrophic damage to surrounding
  2. 2 military ammunition projection hazard not mass
  3. 3 fire hazard,minor blast or projection
  4. 4 no significant hazard
  5. 5 sensitive substance mass explosion hazard
  6. 6 insenstive substance no mass hazard

Organic peroxides 5.2 more sensative and likl;ey to explode than explosives

18
Q

transport regs dangerous goods

A

2009

plain orange plate front and rear
also displaying hazard warning diamonds if explosives

19
Q

6.8 Hazard zones, the following cordons will be set at the following distances by the IC:

A

200 metres for explosives up to 250kg or approximately the size of as mall car.
• 600 metres for explosives 251kg – 2000kg and any military explosive munitions HD1.2. •
1000metresforexplosivesover2000kg.

20
Q

Radio distances

A

60m

600m military grade