Firecracker Displays Safety .


105 views
Uploaded on:
Category: Music / Dance
Description
Firecracker Shows and Security. Dave White Tony Wilkinson. Simply judgment skills innit?. Surveying Hazard Regulations Information of the subject "Dismal Creative ability" . Before we proceed onward
Transcripts
Slide 1

Firecracker Displays & Safety Dave White Tony Wilkinson

Slide 2

Just judgment skills innit? Evaluating Risk Regulations Knowledge of the subject "Dreary Imagination" Before we proceed onward…

Slide 3

Lack of sound judgment!

Slide 4

Today\'s Topics Regulations and so on. Dark Powder (black powder) Deflagration Firework Types Estimating Risk Planning an occasion Firing a show Demonstrations

Slide 5

Regulations and so on. Classes of Firework (BS7114) Category 1 ("indoor") firecrackers are for use in to a great degree limited zones. Classification 2 ("garden") firecrackers are for use by the general population in their greenhouses. Securely perceptible from 5m, no flotsam and jetsam past 3m. Classification 3 ("display") firecrackers are for use by general society in bigger presentations. Securely visible from 25m, no garbage past 20m. Class 4 ("professional") available to be purchased just to firecrackers experts . They have couple of limitations, default class for untested firecrackers

Slide 6

Regulations and so on. UN Hazardous Materials – Class 1 1.1 Mass Explosion Hazard 1.2 Nonmass blast, section creating 1.3 Mass fire, minor impact or piece risk 1.4 Moderate fire, no impact or part: a customer firecracker is 1.4G or 1.4S 1.5 Explosive substance, exceptionally coldhearted (with a mass blast danger) 1.6 Explosive article, greatly uncaring

Slide 7

Regulations and so forth. Firecracker Categories & Classes Consumer Fireworks Usually Cat.3 1.4G Display Fireworks Usually Cat.4 Mostly 1.3G Large shells now 1.1G (ADR)

Slide 8

Black Powder (Gunpowder) Introduction Used for: Propellant (little grain – e.g. Weapon) Propellant (expansive grain – e.g. Rocket) Explosive (burst charge) Fuses, delays and so on

Slide 9

Black Powder Solid Grain SOLID GRAIN LIQUID GAS FLAME

Slide 10

Black Powder Grain Burn

Slide 11

Black Powder Deflagration

Slide 12

Black Powder Confinement

Slide 13

Black Powder Confinement Failure! 3,000 C 50,000psi

Slide 14

"Streak" Perchlorate and atomised Aluminum Loud reports "Hard Break" shells and rockets High Brisance "detonates" with little constrainment >10g = 1.1G

Slide 15

Some sorts of Firework

Slide 16

Firework: Rocket Construction Stars (with burst charge) BP Grain Nozzle Balance stick Launch tube

Slide 17

Firework: Rocket Failure modes Cracked Rocket Motor

Slide 18

Firework: Rocket Failure modes "Groundburst" Also… Failure to fly

Slide 19

wind Firework: Rocket Effect of wind "CofG" wind Angling far from wind – exacerbate it!

Slide 20

Fireworks: Gerbs "Wellsprings" Kimbolton 7lb Gerb "Wellspring with sparkles" Solid or packed grain

Slide 21

Fireworks: Cakes "Multi-shot Battery" Crackle Red Explosive (glimmer) Red Flare (delay) Propellant (BP) Fuse

Slide 22

Fireworks: Cakes "Multi-shot Battery"

Slide 23

Fireworks: Candles "Roman Candle" Fuse Felt wad Delay Multi-shot 19mm – 65mm + Sidewall can come up short Stake, Board or Box

Slide 24

Fireworks: Shells Introduction 3" , 4" and 5" (75,100,125mm) 6" and up 1.1G

Slide 25

Fireworks: Shells Construction 50m+ burst ~100m/sec ~300mph!

Slide 26

Rack Failure ! Firecrackers: Shells Failure Modes No Lift (or zero postponement) "Window box" "explosion" Poor Lift Low Break (going up) Long or fizzled defer Low Break (descending) "Dark Shell" Causes: Malfunction, Jam, Loading blunder

Slide 27

Fireworks: Shells Calculating Distances Rule of thumb: 25m + 10m for every shell inch Other Variables: Mortar point Wind speed & course Shell turn Mortar sort (esp. steel) Note: Normal wellbeing separations don\'t represent disturbed racks 4" Shell

Slide 28

Fireworks: Shells Calculating Distances 4" Shell – 100m burst breadth, burst at 6m, 230m from dispatch Mortar tumbled to 75 degrees from vertical

Slide 29

Fireworks: Fuse & Igniters PIC Green/Brown WASAG Pipe Match ("green") Electric matches ("dets")

Slide 30

PPE Clothing Hard Hat Eye security Ear insurance (or not) Gloves (or not) Don\'t overlook: Torch and Several lighters!

Slide 31

A Firework Show Planning the Event Site Visits Safety Distances Roads, Buildings, Airports Responsibilities Event Organizer Marshaling necessities Notification: Police, Fire, CAA (and some other influenced parties) Budget and so on. Strategy Statement Risk Assessment

Slide 32

A Firework Show Planning the Display Check material (if conceivable) Firing Order Equipment Requirements Racks, boxes, sheets and so on. Material Preparation Fusing Waterproofing Transport ADR

Slide 33

A Firework Show Site Setup Drop Zone Event Organizer Safety Distances Wind Direction Perimeters and Marshaling Layout in shooting request Site melding/wiring Shells Large Cakes Candles Small Cakes Set Pieces Audience

Slide 34

A Firework Show Site Setup Driffield Showground – 24 th June 2006

Slide 35

A Firework Show Site Setup Hull University Union – May 2004

Slide 36

A Firework Show Firing the Display Firing Order "Gaffer" Walk-through Decision to discharge Keep post Check for "duds" Clearing Up

Slide 37

www.dti.gov.uk/firecrackers/www.hse.gov.uk www.eig.org.uk www.bpa-fmg.org.uk More Information: Training courses Lots of connections at Fireworks magazine site: www.fireworks.co.uk www.kimboltonfireworks.co.uk www.fantasticfireworks.biz

Slide 38

Outdoor Demonstrations Example hardware Types of circuit Black Powder and control Fire Fighting

Recommended
View more...