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Published byLaurence Harrington Modified over 8 years ago
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Blasting Safety & Regulations
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Intro to Safe Blasting
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ATF Issue licenses & permits Regulate buying & selling Regulate & inspect storage Handle loss & theft Investigate explosive fires & accidents
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Pre 9-11 To applied for federal explosives license you simply filled out 5400.13 form, attached all of required documentation mailed it in
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Post 9-11 Stricter rules for licensing, magazine storage & security Enacted Safe Explosives Act
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Purchaser fingerprinted & background checks required on all licensee applicants & employees
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“Table Of Distance” consulted to determine proper distances between magazines Combustible debris cleared 50’ in all directions Minimum of 25’ between magazines
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Magazine Doors 2 Padlocks 5 Tumblers Shackle 3/8” diameter Steel hoods ¼” thick
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Magazines Ventilated
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Magazines Grounded
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Boxes not stacked on sides, ends or more than 6’ high Need 1” breathing space between boxes & walls
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Inventory Books In Magazine
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ANFO Ammonium Nitrate Fuel Oil
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ANFO 94% Ammonium Nitrate 6% Diesel Fuel When used incorrectly or for terrorism it becomes a deadly & devastating agent
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Lost Or Stolen Reported to ATF within 24 hours by calling 1-800-800-3855 Form 5400.5 filled out Local authorities notified
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MSHA
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Make sure explosives handled & stored in safe manner More involved with day to day activities than ATF
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Magazines Detonators stored in same magazine with explosives Detached structures located away from power lines, fuel storage & sources of fire Reasonably bullet resistant
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Magazines Non-sparking materials inside, including floors Posted with danger signs, located so bullet passing through sign will not strike magazine Unheated
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Parked Transport Vehicles Shut engine off Parking brake on Wheels chalked
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Transport Vehicles Properly placarded Placards visible from all sides Caps & detonators stored separately Nothing else stored with them
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When vehicle contains explosives it must be visible at all times
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Blasting Rules
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Signs posted in vicinity of blast area
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One person present at blast site after holes loaded
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Warning Signal Before each shot Sound all clear after shot Signals must be a different pattern
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MSHA standards surpass ATF standards - so if you are up to par with MSHA you’re okay
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State agencies regulate environmental end of blasting Issue blasting licenses to individuals State agencies regulate environmental end of blasting Issue blasting licenses to individuals
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Air Blast Airborne shock wave Caused by burden movement or release of expanding gas into air May not be audible A concussion element - something you feel
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Ground Vibration Shaking of ground by elastic waves emanating from blast Measured as particle velocity (inches per second) Excessive vibration may cause damage to structures
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Pounds of explosives used per shot is closely regulated Amount allowed based on distance to nearest controlled structure To find out maximum allowable pounds, consult scale of distance chart Pounds of explosives used per shot is closely regulated Amount allowed based on distance to nearest controlled structure To find out maximum allowable pounds, consult scale of distance chart
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Seismograph Monitors ground vibration & air blast Ground movement measured in inches per second
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Never Fight An Explosive Fire
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Placards
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If you ever come across an accident & see those placards, evacuate area Never, ever attempt to put out an explosives fire If you ever come across an accident & see those placards, evacuate area Never, ever attempt to put out an explosives fire
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Blast In Romania
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Truck carrying 20 tons of ammonium nitrate left road, turned on it’s side & began to burn
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Driver tried to extinguish fire but did not succeed He left truck & went to nearby police for help Driver tried to extinguish fire but did not succeed He left truck & went to nearby police for help
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Bystanders stopped to watch, a TV crew arrived to tape & fire fighters arrived but did not start to extinguish fire
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Then a huge explosion Results: 20 dead, including driver, 7 firefighters, 2 journalists & 8 spectators Human body parts were widely dispersed Then a huge explosion Results: 20 dead, including driver, 7 firefighters, 2 journalists & 8 spectators Human body parts were widely dispersed
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Crater 50’ in Diameter
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Crater 16’ Deep
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Road Destroyed
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The engine was projected & landed more than ½ mile away through the roof of a house 2 department vehicles & a few cars were completely destroyed A seismograph recorded it as a 3 on the Richter Scale 16 houses were damaged The engine was projected & landed more than ½ mile away through the roof of a house 2 department vehicles & a few cars were completely destroyed A seismograph recorded it as a 3 on the Richter Scale 16 houses were damaged
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What Do We Learn? Transport explosives with great care Inspect vehicles, repair safety defects immediately & drive carefully
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What Do We Learn? For those who drive the same roads & work around explosive vehicles, respect the hazardous potential & maintain a safe distance at all times
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What Do We Learn? Most importantly if there is a fire on an explosives vehicle, small, away from the cargo & quickly extinguishable, do so If there is any doubt, clear area for a large distance & let it burn
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In other words, fight serious explosive fires with your feet & evacuate to a safe distance In other words, fight serious explosive fires with your feet & evacuate to a safe distance
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