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This training presentation covers the regulatory requirements and legal standards for blasting operations conducted by the North Carolina Department of Transportation (NCDOT). It includes information on blaster qualifications, storage and transportation of explosives, initiation of explosives, firing the blast, post-blast inspection, handling misfires, and personal protective equipment. Ensure compliance with NCDOT safety guidelines by keeping your team informed and trained.
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FHM TRAINING TOOLS This training presentation is part of FHM’s commitment to creating and keeping safe workplaces. Be sure to check out all the training programs that are specific to your industry.
Blasting Regulations Regulatory Requirements for NCDOT Blasting Operations
Legal Standards: • 29 CFR Part 1910 - General Industry • 29 CFR Part 1926 - Construction
General Provisions: • General requirements not specifically related to a particular operation or procedure • Usually broad in scope • “Do’s and Don’ts”, “Always and Nevers”
Blaster Qualifications: • Knowledge and Experience • Training • Physical Ability • Evidence of Competency Certified Blaster
Storage of Explosives: • Storage in Magazines • Separate Magazines for Explosives and Detonators • Separation Distances • barricaded • unbarricaded
Transporting Explosives • Requires CDL with Hazmat Endorsement • Proper Placarding • No smoking, etc. • Same vehicle for explosives and detonators may be permitted • Route Plan
Loading Explosives • No operating equipment within 50 feet of loaded holes • Load only those holes intended to be fired in the next round • Warning signs posted • Check all holes for depth prior to loading
Initiation of Explosives • Connections from boreholes back to source of firing current • Survey for extraneous electricity • Solid Connecting & Lead wires • EB detonators all the same kind • Proper resistance • Leg wires shunted
Initiation of Explosives (cont’d) Only the Blaster shall: • be in charge of the blasting machine • connect lead wires to machine • test circuits with Blasting Galvanometers • fire the shot • immediately disconnect lead wires after firing the shot
Firing the Blast • Code of signals, familiar to everyone, must be posted • Loud warning signal prior to firing the shot • Flagmen posted at every roadway passing through the blasting zone • Blaster must assure safety
Post Blast Inspection • Disconnect firing line immediately after blast • Allow sufficient time for dispersion of fumes • Blaster must verify all charges have fired before others are allowed into blast area
Misfires • Exclude all employees from danger zone • No other work except that required to clear the misfire • First attempt is to re-fire the hole • Explosives may be removed by washing out with water if re-fire doesn’t work • All non-electric misfires require 1 hr wait • Misfires handled by Blaster in charge
Personal Protective Equipment • Hard Hat • Safety Toed Shoes • Reflective Vest • Safety Glasses • Gloves • Hearing Protection
Other Regulated Operations: • Underground Transportation - 1926.903 • Use of Safety Fuse - 1926.907 • Use of Detonating Cord - 1926.908 • Underwater Blasting - 1926.912 • Blasting in Excavation Work Under Compressed Air - 1926.913