Part 14 - BlastingEffective May 11, 2006
In this part, the following definitions apply:
means the physical presence of an authorized person who is in visual contact with and has control over explosive materials;
means the controlled elimination of an avalanche hazard using explosives or other methods;
means an area affected by the detonation of explosives;
means a worker who holds a valid blaster’s permit in accordance with these Regulations;
means a relatively insensitive explosive that includes any ammonium nitrate / fuel oil mixture (AN/FO), emulsion, slurry or water gel;
means a permit issued under these Regulations that authorizes a person to conduct blasting operations;
means any area extending at least 50 m (165 ft.) in all directions from any place in which explosive materials are being prepared or placed, or in which an unexploded charge is known or believed to exist;
means a portable device used to initiate a blast by electricity;
includes the preparing, placing and firing of a charge, the handling of misfire, and the destroying of any explosive materials;
means a remnant of a blast hole that did not properly break when the blast was initiated, also referred to as socket;
means the start of a drilled blast hole;
means a mode of transporting explosives and includes motor vehicles, powered mobile equipment, drilling rigs, trains, boats, aircraft or shaft hoists;
means an unlicenced facility not used for overnight storage, and constructed to type 6 magazine specifications, pursuant to the Explosives Act (Canada) and its Regulations;
means any area in which there may be danger to any person from flying material or any other hazard resulting from a blast;
means a blasting cap or other device used to initiate detonation of an explosive;
means any chemical compound or mixture which, when detonated, violently decomposes, producing a large volume of gas at high temperatures capable of having destructive effects;
means any building or other structure used for the storage of explosives and built conforming to the standards made pursuant to the Explosives Act (Canada) and its Regulations;
"primed cartridge" or "primer"
means an explosive containing a detonator;
means a small container located adjacent to an underground workplace where small quantities of explosives may be stored;
"temporary blaster’s permit"
means a blasting permit issued under these Regulations, valid for a maximum period of 90 days;
means the main storage area for explosives underground.
Any person who handles, transports or stores explosives shall be familiar with and comply with applicable provisions of the Explosives Act (Canada) and any Regulations made thereunder, and the Transportation of Dangerous Goods Act (Canada) and Regulations.
No person shall conduct, or be permitted to conduct, a blasting operation unless
Holding valid permit
the person holds a valid blaster's permit or temporary blaster's permit issued under these Regulations,
Scope of permit
the work involved is under the scope of their permit, and
the details of the blaster's permit have been recorded and verified by the employer.
A blaster shall be assigned responsibility for conducting or directing any blasting operations.
Work in blasting area
No person shall conduct or direct any work in the blasting area without the prior approval of the blaster responsible for that area.
Safety of work
No blaster shall authorize or permit any work that may jeopardize the safety of any person.
A candidate for a blaster's permit or a temporary blaster's permit shall
be at least 18 years of age,
be physically capable of carrying out the duties of a blaster, and
have at least six months experience in connection with blasting operations or have equivalent training and experience acceptable to an examiner authorized under sections 14.06 or 14.07 prior to qualifying for a blaster's permit.
A temporary blasting permit
may be issued upon successful completion of an examination that may be written or oral, or given in any other manner as the director may require for the purpose of establishing the qualifications of the applicant,
may be issued by the director or any person authorize by the director in a form prescribed by the director to a person to handle and use explosives,
shall be issued under this section when the director or the person authorized by the director is satisfied that the applicant for the permit has an adequate knowledge of the handling and use of explosives,
shall be valid for a specified period not exceeding 90 days and shall be subject to such restrictions and conditions as may be endorsed on it by the person who issues it, and
Copy to director
issued under this section by any person authorized by the director shall be copied and sent forthwith to the director.
may be issued upon successful completion of an examination that may be written or oral, or given in any manner as the director may require for the purpose of establishing the qualifications of the applicant,
may be issued by the director or a safety officer, authorized by the director, in a form prescribed by the director, to a person authorizing such person to conduct blasting operations, and
shall be granted for a period of five years and be subject to such restrictions and conditions as may be endorsed on it by the issuing safety officer.
In this section
“certificate” means a certificate, licence, registration or other form of official
recognition granted to an individual, which attests to the individual being qualified
to conduct blasting operations. « certificat »
(Subsection 14.07(1) added by O.I.C. 2010/167)
Notwithstanding section 14.05 and paragraph 14.06(2)(a), and subject to subsections
(3) to (5), an applicant is entitled to receive a blaster’s permit under this Regulation if
holds a certificate issued by a regulatory authority in another Canadian
jurisdiction that is a party to the Agreement on Internal Trade; and
is in good standing with the regulatory authority that issued the certificate.
(Subsection 14.07(2) added by O.I.C. 2010/167)
The director may impose additional training, experience, examinations or assessments
as a condition of the issuance of a blasting permit under this section where the applicant
has not worked as a blaster within the period of two years immediately preceding the date
when the applicant’s application is received by the director.
(Subsection 14.07(3) added by O.I.C. 2010/167)
If the certificate held by an applicant who relies on this section for the issuance of a
blasting permit contains a limitation, restriction or condition, the director may
impose a similar or equivalent limitation, restriction or condition on the
issuance of the permit; or
refuse to issue the permit
(Subsection 14.07(4) added by O.I.C. 2010/167)
If the director considers it necessary to protect the public interest as a result of
complaints or disciplinary or criminal proceedings in any jurisdiction relating to the
competency, conduct or character of an applicant for a permit under this section, the
attach terms, conditions or restrictions to the permit; or
refuse to issue the permit
(Subsection 14.07(5) added by O.I.C. 2010/167)
A blaster shall ensure that
Permit available for inspections
when conducting or directing a blasting operation, their blaster's permit is readily available for inspection upon the request of a safety officer, and
the original blaster's permit is kept as proof of issuance, unless a copy is certified as a true copy by the person who issued the permit, or by the director.
A worker who assists a blaster to prepare, fix or fire charges and handle misfires shall
be a qualified person, instructed in the safe handling of explosives,
remain under the full and direct control of the blaster, and
be continuously visually monitored by the blaster who is responsible for the assistant's work.
Pre-blast and post-blast inspection
All surface blasting operations shall have a blaster's log which records the pre-blast loading details and the results of the post-blast site inspection.
Blasting logs shall be maintained for at least five years at the workplace and be available for inspection by workers, worker representatives, or safety officers.
All blasters shall maintain personal logs of all blasting work that they have performed and the personal logs shall be available for inspection by a safety officer.
SUSPENSION OF BLASTER’S PERMIT
Where there is reason to believe that a blaster has not complied with any regulation
relating to blasting
the employer shall ensure that
an immediate investigation into the matter is conducted and, where determined appropriate, suspend the blaster from conducting or directing any blasting operation, and
a report of the investigation is submitted to the director, and
Safety officer duty
a safety officer shall ensure that
a further investigation of the matter is conducted, and
a blaster’s permit is suspended or repossessed when there is reason to believe
that the safety of workers has been or may be jeopardized by the blaster,
written reasons for the suspension are provided to the persons affected by it.
In addition to the reporting requirements of the Occupational Health and Safety Act, where a blasting incident involves personal injury or an unusual occurrence with explosive materials, the employer and supervisor shall ensure that
the incident is reported immediately to the director, and
a written report of the incident is forwarded without delay, outlining
the names and permit numbers of all blasters involved,
the time, date and location of the incident,
the names of any injured persons,
the details of the detonators, explosives, accessories, and blasting equipment used,
a factual account of the incident and the events leading to it, and
a description of the action taken by the employer.
TRANSPORTATION OF EXPLOSIVES
Vehicles with passengers
No more than 75 kg (165 lbs.) of explosives shall be carried in a vehicle passengers primarily designed for the carriage of passengers and their baggage.
Explosives carried in a vehicle shall be in a fully enclosed, locked, fire resistant, fixed container or compartment, separate from the passenger compartment.
No explosive material shall be transported in a conveyance unless
the detonators are kept in a separate container and separated from other explosives by a partition in accordance with the requirements of the Explosives Act (Canada) and its Regulations, or a separation between the containers of a minimum of 0.6 m (2 ft.), and
the explosive materials are protected from contact with iron or steel surfaces with wood, a tarpaulin, or other suitable materials.
Placards indicating "explosives" shall be displayed on all sides of a conveyance transporting explosive materials in accordance with the federal Transportation of Dangerous Goods Shipping Regulations.
A conveyance used to transport up to 2,000 kg (4,400 lbs.) of explosive materials shall be equipped with at least two fire extinguishers in working order, readily available for use and with a ULC rating of 5 BC or greater.
In freezing temperatures, the fire extinguishers on a conveyance shall be of a non-freezing type.
Notwithstanding subsection (1) where the amount of explosives does not exceed 30 kg (66 lbs.), the number of fire extinguishers may be reduced to one.
Electric detonators shall not be transported in a radio transmitter-equipped conveyance unless
the leg wires of the detonator are folded and shunted, as shipped by the manufacturer,
the detonator is in a closed metal container
lined with wood or other approved materials, and
electrically bonded to the conveyance, and
any radio capable of transmission is switched off whenever the metal container is open.
Inspection of conveyance
Before loading explosive materials for transportation, a conveyance shall be inspected to ensure that
the fire extinguishers are filled and in working order,
the electric wiring is completely insulated and firmly secured,
the fuel tank and feed lines have no leaks,
the chassis, engine, pan and bottom of the conveyance are reasonably clean and free from surplus oil and grease,
the brakes and steering apparatus are in good condition, and
the conveyance is in sound mechanical condition.
Instruction to workers
Any person engaged in the loading, conveying or unloading of explosive materials shall be instructed in and observe all safety precautions.
Explosive material shall not be dropped, thrown or abused during loading and unloading.
Passengers other than persons assigned to assist in handling explosives shall not be permitted on a vehicle transporting explosives.
Flammable material shall not be on or in proximity to a conveyance transporting
Smoking or open flames shall not be permitted within 15 m (50 ft.) of a conveyance transporting explosive materials.
A conveyance shall be adequately fuelled before it is loaded with explosive materials.
A conveyance containing explosive materials shall not be refuelled unless
refuelling is necessary for the conveyance to reach its destination,
the ignition is shut off and the brakes are set, and
the fuel tank is filled at a place where the number of persons is kept to a minimum.
A conveyance transporting explosive materials shall be operated inmanner consistent with road, traffic and weather conditions.
Person in charge of conveyance
A conveyance carrying explosive material, whether parked or mobile, shall be in the charge of and attended by a competent person who is
at least 18 years of age,
the holder of a valid driver's licence, and
instructed in the transportation of explosive materials.
Conveyance load limit
A conveyance shall not carry a load of explosives in excess of 80 percent of the manufacturer's rated carrying capacity for that conveyance.
Explosive material shall not be transported in a trailer or in any form of semi-trailer unless it is equipped with power brakes operated from the tractor cab.
UNDERGROUND TRANSPORTATION OF EXPLOSIVES
Where explosives are transported underground by means of mechanical haulage, including trackless equipment
Right of way
definite arrangements for the right of way of such vehicles shall be made before the vehicle is moved, and
the speed of the vehicle shall not exceed 10 km/h (6 mph).
Where mechanical track haulage is used, the locomotive shall be maintained on the forward end of the train carrying explosives, unless a qualified worker walks in advance of the train to effectively guard it.
In track haulage, the car or cars carrying explosives shall be separated from the locomotive by an empty car or a spacer of equivalent length.
Explosives shall not be carried on the locomotive.
Where a trolley locomotive is used for transportation of explosives, the car or cars carrying explosives shall be protected from trolley wire contact and other hazards.
When explosives are being transported in a shaft conveyance, the person in charge of such operation shall give notice or cause notice to be given to the deck and hoist operators.
Handling explosives on shaft conveyance
Unless under the immediate supervision of a person appointed by the manager or supervisor, no worker shall place, remove or possess any explosives on a shaft conveyance.
Other material shall not be transported with explosives in any shaft conveyance.
Transfer of explosives
The transfer of explosives from the magazine or other surface storage place shall be arranged so that undue delay does not occur between the time the explosives leave the storage place and the time they are properly stored in designated storage places in the underground workings or distributed to points of use in the underground workings.
Explosives shall not be left at any level station or near the shaft collar or other entrance to the underground workings, but shall be transferred from any designated storage place to other designated storage places or points of use without undue delay.
The director, or a safety officer authorized by the director, may issue a magazine licence for storage of explosives at a mine or quarry. Magazine licences for a site other than a mine or quarry shall be granted under the Explosives Act (Canada) and its Regulations.
Magazines at a mine or quarry shall
be licenced in a form prescribed by the director,
be constructed in conformity with the Magazine Standards for Blasting Explosives and Detonators of the Explosives Act (Canada) and its Regulations.
be located in accordance with the Table of Quantity and Distances shown in Table 14-1 at the end of this Part, and
have "Danger - Explosive" signs posted conspicuously beside the road approaches to the magazine, but not on the structure.
Flammable material shall be kept a safe distance, at least 7.5 m (25 ft.) from a container or storage place for explosive materials.
Explosives delivered to a workplace shall be
attended by a competent person, or
properly kept in locked and secured containers.
Explosives shall be kept at a safe location.
Explosives on conveyance
Explosive materials shall not be kept on a conveyance unless they are in secure containers and attended by a competent person.
Storage beyond normal hours
Explosives that are to be stored beyond normal working hours shall be returned to a licenced magazine or otherwise stored in accordance with the requirements of the Explosives Act (Canada) and its Regulations.
Storage beyond 90 days
Explosives retained more than 90 days from the date of purchase shall be stored in a licenced magazine.
When stored on the surface, explosives in excess of 75 kg (165 lbs.) and detonators in excess of 100 shall be stored in a licenced magazine.
Detonators shall not be stored with any other type of explosive materials.
Magazines for detonators
Magazines or containers for detonators shall not be located
when underground, within 15 m (50 ft.) of any other explosives, or
when on the surface, within 50 m (165 ft.) of any other explosives.
Igniter cords, matches, pull wire lighters and other flammable accessories shall be stored separately from any detonators or explosives.
No person shall smoke within 15 m (50 ft.) of any place or building where explosives are stored or while handling explosives.
be under the charge of a person authorized by the employer or owner who shall carry out a weekly inspection of the magazine,
have the stock of explosives rotated so that for each type and size of explosive, the oldest stock is used first,
on the surface of a mine or other site above ground, be kept locked at all times except when explosives are being moved,
on the surface, have a current inventory of its contents in a special log book and all entries shall be signed by the authorized person in charge,
be kept clean, dry and free from grit at all times, and any spillage shall be cleaned up immediately,
be kept free of broken explosive packages or spilled explosives, and when necessary the shelves and floors shall be treated with a suitable neutralizing agent to remove all traces of explosive substances,
have its contents arranged in a tidy and organized manner including any explosives returned to it from a workplace, and
not contain any exposed iron or steel except for its fixtures.
Day box markings
Day boxes or containers used for day storage of explosives at a workplace shall be conspicuously marked with an "Explosives" sign to warn workers of a presence of explosives in the work area.
Prior to the preparation of a charge at the loading site, detonators shall be kept in an enclosed, crush-resistant box and conspicuously marked with the word "Detonators".
UNDERGROUND STORAGE OF EXPLOSIVES
Application for magazine
An application for an underground magazine and licence shall be made in writing to the director and be accompanied by plans and specifications showing the design and proposed location of the magazine.
A licenced underground magazine shall not contain more than the necessary supply of explosives for seven working days.
Where there are more than 160 kg (350 lbs.) of explosives underground, they shall be stored in a magazine.
Explosives stored underground in quantities less than 160 kg (350 lbs.) shall be kept in suitable containers at a safe location away from drilling and blasting operations.
Notwithstanding subsection (3), where long hole blasts or similar blasting operations are being carried out underground, such quantities of explosives as can be loaded in a 24-hour period, together with an amount necessary to maintain that supply, shall be kept in a suitable storage place that may or may not be a magazine.
A magazine or storage container in an underground mine shall be
located at least 60 m (200 ft.) from a
located so that there is no possibility of a vehicle colliding with the storage container,
located so that in case of fire in the mine the explosives are not likely to become overheated, and
conspicuously marked by a "Danger - Explosives" sign or signs.
Where an explosive is used in an underground mine, the explosive shall
be of Fume Class 1 rating as established by the Explosives Regulatory Division of Natural Resources Canada, or
if it is other than Fume Class 1 rating, have a safe work procedure prepared and adopted by the supervisor in charge of the mine to ensure that no worker is exposed to fumes that endanger their health or safety.
Blending of ammonium nitrate and fuel oil or other nitro-carbonitrate mixtures shall be carried out
under a factory licence granted, or permission given, by the Explosives Regulatory Division, Natural Resources Canada, or the appropriate federal authority, and
under the conditions specified by the licence or permit.
Previously blasted area
Drilling shall not be done in a previously blasted area until the area to be drilled is exposed and carefully examined for holes or remnants of holes containing explosive materials.
If a hole or remnant of a hole containing explosive materials is found, those materials shall be detonated or removed prior to any other work commencing.
Drill holes shall have sufficient diameter to permit free insertion of the explosive materials to the bottom of the hole without cutting, pounding, ramming or applying undue pressure on the explosive.
Development headings shall not be abandoned or work discontinued until
the material broken at the firing of the last round has been cleared from the face, and
the whole face of the heading is examined for explosives from missed or cut-off holes.
No drilling shall be done on surface
within 0.3 m (12 in.) of any hole that has been blasted or any remnant of such a hole, and
within the greater of 5 m (16 ft.) or a distance equal to one-half the depth of another hole that contains explosives, unless it is being drilled pursuant to section 14.72(4).
In an underground operation, before drilling or sampling begins at a working face, the following procedure shall be followed:
The exposed face shall be
carefully examined for misfires, cut-off holes and remnants of blasted holes.
All remnants of blasted holes shall be conspicuously marked by
a ring of contrasting paint or crayon, and
inserting sticks or plugs into the holes for lifter remnants in a heading.
Where operating conditions preclude the use of water
an alternative safe method shall be used for checking each face for misfires and cut-off holes, and
a written safe work procedure detaining the method shall be prepared and followed.
Drilling or sampling shall not be done within
0.15 m (6 in.) of any hole that has been blasted or any remnant of such hole, and
1 m (3 ft.) of any hole containing explosives.
Drilling and charging operations shall not be conducted simultaneously on the same face with one above the other or within 7.5 m (25 ft.) horizontal distance.
A blaster shall be responsible for directing the work for any blasting operation.
Safety fuse use
A worker shall not use safety fuses in an underground mine for blasting operations in chutes, draw points, passes or millholes.
Explosives in clothing
Explosive materials shall not be kept in the clothing worn by any worker.
Any detonator or detonating connector (relay) shall be kept and handled separately from other types of explosive materials until the last practicable moment before bringing them together.
Explosives, other than blasting agents, shall not be stripped of protective casings or wrappers.
Upon the first sign of an electrical storm
the handling of explosive materials shall be suspended,
all persons shall be removed from the danger area, and
the danger area shall be guarded by the use of signs near the danger area and guards posted outside the danger area for the duration of the storm.
The blaster appointed by the employer shall determine the duration of the suspension of operations and that decision shall not be overruled by any supervisory personnel.
Other than a device used for igniting a safety fuse, no flammable material or open flame, including any ignited materials, shall be in proximity to explosive materials or within the blasting area.
Any explosive hardened by low temperature shall not be warmed near an open fire or a steam boiler or by direct contact with steam or hot water.
Damaged or deteriorated explosives
Explosive materials that are stained, damaged, or deteriorated shall be examined by a blaster or other qualified person and where
the defect in any explosive is found to be slight, it may be used but only with a new explosive as a primer, and
any explosive materials are deemed to be unusable they shall be destroyed in a safe manner.
Containers with explosives
A container or package that is known or suspected to contain explosive materials or residue of those materials shall be handled with care to prevent undue impact or exposure to excessive heat.
Any surplus box, carton or liner that contained explosive materials shall be collected and destroyed in a safe manner.
Any unused explosive materials shall be returned to a container or magazine or
destroyed in a safe manner.
Explosive materials shall not be abandoned.
Only a non-sparking implement designed for punching a hole in the cartridge of an explosive shall be used for that purpose.
Primers shall be made up as close to the time they are used as is practicable and only in sufficient numbers for the immediate work.
Detonators, igniter cords, or other explosives shall not be transported in any conveyance, whether on the surface or underground, unless placed in separate, suitable closed containers.
Detonators kept separate
A worker carrying detonators with other explosives from the nearest storage place to a point of use without placing them in a container shall keep them separate from the other explosives.
In no case shall made-up primers be transported.
A hole shall not be loaded with explosive materials until it has been examined and, if necessary, cleaned.
When a hole is pneumatically loaded with a blasting agent, it shall be done by means of semi-conductive hose specifically designed for that purpose.
Grounding for pneumatic loading
A machine used for pneumatic loading shall be
effectively grounded before and during the loading operation, and
not grounded to a haulage rail, pipe line, or other similar conductor.
Order of loading
An electric detonator shall not be placed in a hole prior to the pneumatic loading of an explosive.
A liner with any detonator shall not be placed in a hole prior to pneumatic loading of
A loading pole or tamping rod made of a sparking material shall not be used to load or tamp an explosive.
Use of tamper
Tamping of an explosive shall be done with pressure, not impact.
Pressure on primer
Undue pressure shall not be exerted on any primer.
Equipment near loaded holes
Except under the direction of a blaster, no motor vehicle or mechanical equipment shall be permitted closer than 6 m (20 ft.) to a loaded hole.
Except for the interconnection of charges in the same hole, no explosive charge shall be connected to another charge or attached to a trunk line until immediately before the intended time of detonation.
Holes that have been loaded, whether primed or not, shall not be left unattended.
A worker shall be posted to ensure that holes referred to in subsection (3) are not tampered with when the work crew is absent from the site.
No fuse shorter than 1 m (3 ft.) shall be used.
No fuse shall be lighted at a point closer than 1 m (3 ft.) from the capped end.
Capped fuses shall be supplied in standard lengths.
Firing with fuses
Where more than one charge is fired, each fuse connected to a charge shall be lighted by a suitable and reliable timing device.
Where igniter cord is used, no connections shall be made to fuses until all holes are loaded.
Leaving blast area
Immediately after the ignition of igniter cord, all workers shall leave the workplace that will be affected by the blasting operation.
All loaded holes fired
All holes charges with explosives in one loading operation shall be fired in one blasting operation.
Electrical blasting circuit shall not be used within the minimum distance specified by ANSI/IME 20-1988, Safety Library Publication entitled Safety Guide for the Prevention of Radio Frequency Radiation Hazards in the Use of Commercial Electric Detonators (Blasting Caps), or other similar standard acceptable to the director.
Minimum distance from radio transmitters
Where the minimum distance has not been determined, no electrical blasting circuit shall be used within
100 m (330 ft.) of any CB or other mobile or portable radio frequency transmitter, or
1000 m (3,300 ft.) of an AM, FM, TV or other fixed radio frequency transmitter.
Alternate control of radio transmitters
Where control of mobile transmitters cannot be maintained on a public highway
warning signs shall be posted to instruct operators of motor vehicles to turn off transmitters,
where necessary, traffic control persons shall be posted to instruct operators of mobile transmitters to turn off transmitters, and
blasting circuits shall be kept on the ground.
Where a shot is fired electrically, the blaster shall test the electrical circuit with an approved circuit-testing device immediately before blasting.
A blasting machine shall be under the care of a blaster.
A blasting machine shall be
kept in good mechanical condition,
tested, using methods specified by the manufacturer, on a regular basis and before any blast which may require the maximum output of the machine, and
isolated from and not connected to the electrical blasting circuit until the blast is ready to be fired.
Firing capacity marked
The firing capacity shall be clearly marked on a blasting machine, and the capacity not exceeded.
Batteries not permitted
Dry- or wet-cell storage batteries shall not be used to fire an electric detonator.
Electric detonators shall not be fired from a power line or from an electrical generator unless a blasting switch specifically designed for that purpose is used.
During an electrical blasting operation, the blasting switch shall be inaccessible to all persons except the blaster and be isolated from the circuit until the blast is ready to be fired.
Lighting and power circuits
Electric power from lighting or power circuits shall not be used for firing circuits charges unless
the blasting circuit has an isolating transformer, and
a special firing device that opens the blasting circuit by gravity is used.
The blasting circuit conductors between the firing device and the blast site shall be No. 12 AWG or heavier, and be readily identifiable as blasting cable.
Where expendable connecting wire is used, it shall not be lighter than No. 20 AWG.
Every electric power line blasting switch shall
have the live side of the device installed in a fixed box that is locked and accessible only to the blaster, and
incorporate a lightning gap
of at least 1.5 m (5 ft.) between the blasting switch and the service switch, and
that shall only be closed by a twist-type plug and cord assembly immediately before firing.
Switch for multi-circuits
Where a single blasting switch is used for several blasting circuits, an isolating switch equipped with short-circuiting means shall be installed in each circuit and located in a safe place.
Circuit conductors near power
Blasting circuit conductors shall be kept at least 0.15 m (6 in.) away from power and lighting cables and from any electrical conductors.
All blasting circuit conductors leading to a blasting site shall be insulated and, except when firing the blast, kept short circuited.
When blasting in more than one blast site from a main power line
lead wires shall be disconnected from the main line after a blast, and
Wiring into main line
no other blast shall be wired into the main line until lead wires from all fired blasts have been disconnected.
Blasting in a shaft, shaft station or other workings being driven from a shaft shall be done by means of electricity
after the first 3 m (10 ft.) of advance has been made in the shaft, and
until such time as the permanent timbers and ladders have reached the level upon which blasting is being done.
Blasting in a raise, where free escape is not readily available, shall be done by means of electricity from a safe location outside the raise.
A blasting area shall be clearly identified by signs to prevent inadvertent access of vehicles, equipment or pedestrians.
The blaster shall post guards as necessary to guard all possible access points to the danger area.
Instruction to guards
The blaster shall instruct the guards as to their duties and responsibilities.
Guards shall be posted at locations that are protected from flying material and other hazards resulting from the blast.
Once assigned to a post by the blaster, a guard shall prevent all persons from entering the danger area.
Guard at post
Guards shall remain at their posts until
the charge is detonated and the "All Clear" signal sounds, or
they are personally relieved by the blaster.
Guard on surface
For surface blasts a signalling device, having a distinctive sound audible within the proximity of the danger area, shall be used to sound a warning of a blast.
A signalling code for surface blasts shall be established and posted at conspicuous locations outside the danger area.
Working adjacent to blast
Where parties are working adjacent to each other on surface or in connected workings underground, safe work procedures shall be implemented for blasting operations and blast times.
Blast near openings
Before any round is fired, when an active heading is within 8 m (26 ft.) of another opening or drill hole, the supervisor shall
make a thorough examination of the other opening, drill hole collar or the nearest point of intersection,
satisfy himself or herself that the heading can be advanced in a safe manner, and
ensure that any access to the nearest point of intersection with the other opening or drill hole is guarded.
RETURNING TO A BLASTED AREA
Following a blast, no person shall return or be allowed to return to a blasted area until
Blast with safety fuse
a minimum of 30 minutes has elapsed from the time the last shot is heard, where a blast has been fired with safety fuse and two or more shots or blasts are fired, or
the firing cables have been disconnected from the blasting machine and the lead wires have been short-circuited, and
Blast with power circuit
the switches of the blasting circuit have been locked in the open position in the case of a blasting operation using a power or lighting circuit.
After a blast is detonated
no person shall enter a blasted are until
sufficient air has been introduced into the workplace to drive out or dilute the gases produced by the blasting operation to a safe level,
the blaster has examined the blasted area for undetonated explosive materials and other hazards, and
Permission to return
the blaster has given permission for work to proceed, and
any hazards shall be identified by the blaster and controlled before other work resumes in the blasted area.
A blaster shall not leave a blasted area before examining the area and attending to any undetonated explosive materials and other hazards caused by the blast.
Inspection of area
Where unauthorized access to a blasted area is effectively prevented, and before any work commences, a blaster shall examine the area and give permission for work to proceed.
Before other work is resumed in a blasted area, loose material on any face or slope shall be scaled, trimmed or otherwise stabilized by the use of equipment, machines and methods that minimize the hazard of injury to workers.
Protection from undetonated material
When loose material is being removed in a blasted area, precautions shall be taken to protect workers against undetonated explosive materials and other hazards that may exist.
When a misfire occurs, no person shall return or be allowed to return to a blasted area
until a minimum of 30 minutes has elapsed when a misfire occurs or is suspected when using safety fuse, or
until a minimum of 10 minutes has elapsed from the time the blasting cable was disconnected and short circuited when using electric or delay element detonators, or
until at least 60 minutes has elapsed when a charge is known or suspected to be burning or where post detonation fumes exist.
When there is evidence or suspicion of a misfired charge or undetonated explosive materials
Minimum number of workers
only the minimum number of persons required to correct the hazard shall be permitted in the blasted area,
Hand removal of material
no person shall use metallic equipment in the immediate vicinity of any explosive materials until after a blaster has directed the hand removal of as much broken material as possible, and
metallic equipment shall only be used to remove broken material if
a blaster directs the use of the equipment,
the illumination of the area is adequate, and
precautions are taken to prevent injury to any person from accidental detonation.
Blasters shall ensure that they
count the number of shots exploding, when possible,
report to the supervisor where it is believed that any shot did not fire, and
identify any misfired hole by inserting a conspicuous, non-metal marker at its outer end, or by roping the area off by any other manner approved by the supervisor.
Blasting of misfires
Any charge that has been misfired shall not be withdrawn, but blasted at a proper time and without delay.
Where a mixture of ammonium nitrate and fuel oil has misfired it shall be washed out of the hole.
A misfired hole on the surface shall be clearly marked off for a distance of 8 m (26 ft.) around the collar of the hole.
Drilling additional holes on surface
Where an additional hole and charge are necessary for the blasting of a misfired charge on the surface, the blaster shall
determine the location, direction and depth of any hole necessary for blasting the misfired charge and supervise its drilling,
ensure that the hole being drilled is at least 1.5 m (5 ft.) from any part of the misfired charge, and
record in the daily examination and report book the location of any misfired shot remaining at the end of the shift.
Water resistant properties
Only explosive materials and blasting accessories having hydrostatic properties pressure and water resistant packaging or properties shall be used in an underwater blasting
Whenever explosive materials are used in an underwater blasting operation, a blasting flag (International Code Bravo, a solid red flag) shall be displayed.
Precautions shall be taken to prevent damage to structures in the danger area of an underwater blast.
No underwater blast shall be detonated
when any diving operation or watercraft is within the danger area, and
until the diving supervisor has given permission to the blaster to fire the charge.
After detonating an underwater blast, the site shall be examined by a blaster or by a competent diver who
has been instructed in the recognition of undetonated explosive materials and other blasting related hazards, and
is under the direction of a blaster.
The blaster shall ensure that misfires blasting related hazards are removed.
Special effects blasting shall be carried out under the direction of a blaster certified in this specialty in accordance with the Explosives Act (Canada), and its Regulations.
Where explosives are transported on mobile drilling rigs
the vehicle shall be operated only in remote locations, where conventional means of transportation and storage of explosives are not practicable and where public safety is not a factor,
Quantity of explosives
less than 200 kg (440 lbs.) of explosives and 200 detonators shall be carried and stored in separate transportation containers built to Type 6 Magazine Standard, and
explosives and detonator containers shall be
fitted with doors or lids facing at least 90 degrees apart,
situated not less than 1 m (3 ft.) apart,
so located that the contents are not endangered by heat sources on the drill unit,
attended by the operator at all times that explosives are carried, and
emptied daily and explosives and detonators shall be transferred to a licenced magazine for overnight storage.
When conducting seismic blasting
Unattended loaded holes
loaded holes shall not be left unattended, except in isolated locations,
if the loaded holes are not blasted immediately, they shall
have leg wires shunted together and tucked into holes,
be suitably use-identified and covered, and
be recorded in the blaster's log, and
Blast within 30 days
loaded holes shall be blasted within 30 days of loading.
Proposed procedures for avalanche control shall be submitted to and accepted by the director prior to explosive charges being
dropped from a helicopter or other aircraft, or
placed manually on site by workers, or
Blasting procedures for avalanche control shall
be reviewed annually and any proposed changes to the accepted procedures shall be submitted to the director for approval, and
include instruction that explosives are not to be primed until the last practicable moment, which means
when the explosives are as close to the control route as possible,
in a safe, sheltered location, excluded from public access, and
the pull-wire lighter is not placed on the safety fuse assembly until immediately before placing the charge.
TABLE 14 – 1|
Quantity-Distance Table for Blasting Explosives Hazard Division 1.1 and 1.5
(columns explained below)
|Quantity (kilograms)||Distance in metres|
|Explanation of Columns|
- D1 & D3:
- These columns apply to factory operations, thus they have not been included.
- This is the separation between two magazines, provided there is an effective barricade between them.
- This is the required distance between a magazine and a very lightly traveled road.
This is the distance required between a magazine and most roads and highways. There is an overriding minimum distance of 180 m.
- This is the minimum distance between barricaded magazines.
This column applies to very busy roads and to buildings where people may assemble.
There is a minimum distance of 270 m to an isolated inhabited building and 400 m to
groups of buildings.
This is the distance between a magazine and a building of vulnerable construction.
Vulnerable construction includes high-rises, schools, hospitals, etc. There is an overriding
distance of 400 m.