Firecracker Displays Safety .

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Category: Music / Dance
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
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Firecracker Displays & Safety Dave White Tony Wilkinson

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

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Lack of sound judgment!

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

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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

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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

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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)

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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

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Black Powder Grain Burn

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Black Powder Deflagration

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Black Powder Confinement

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

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

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Some sorts of Firework

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

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Firework: Rocket Failure modes Cracked Rocket Motor

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

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

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

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

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Fireworks: Cakes "Multi-shot Battery"

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

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

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

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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

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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

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

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

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

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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

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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

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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

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

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A Firework Show Site Setup Hull University Union – May 2004

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

Slide 37 More Information: Training courses Lots of connections at Fireworks magazine site:

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

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