Drilling and blasting on pipelines construction in British Columbia canada

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Defective explosives (cont.) B.C. Reg. 296/97 WORKERS COMPENSATION ACT # OCCUPATIONAL HEALTH AND SAFETY REGULATION # Part 21 - Blasting Operations (b) in accordance with the Explosives Act (Canada) and the regulations under that Act. [en. B.C. Reg. 207/2021, App. A, S. 31.] ## Cold temperatures 21.38 If the sensitivity of an explosive is affected by cold temperatures the explosive may be brought to a working temperature in a manner recommended by the manufacturer, but must not be warmed near an open fire or a steam boiler nor by direct contact with steam or hot water. ## Disposal of explosives 21.39 Explosives must not be abandoned and must be placed in suitable storage or disposed of in accordance with the manufacturer's recommendations. [en. B.C. Reg. 207/2021, App. A, S. 32.] ## Ignition sources prohibited - 21.40 (1) Smoking is prohibited within 15 m (50 ft) of where explosives are stored, being handled, or are in loaded holes. (2) Open flame ignition sources must not be permitted within 15 m (50 ft) of where explosives are stored, being handled, or are in loaded holes, unless the blaster of record gives consent. ## Containers - 21.41 (1) Containers, known or suspected to contain explosives or explosive residue, must be handled with care to prevent undue impact or exposure to excessive heat or flame. (2) All empty original disposable packaging for explosives must be destroyed safely or as recommended by the manufacturer. [am. B.C. Reg. 207/2021, App. A, S. 33.] ## Division 6 - Drilling ## Predrilling requirements - 21.42 Before drilling begins (a) in a previously blasted area, the surface to be drilled must be exposed and examined for misfires, (b) faces or slopes must be cleared of loose material, or otherwise stabilized to prevent slides or falls of rock, and (c) the location of utility services must be determined and clearly marked. [am. B.C. Reg. 207/2021, App. A, S. 35.] #…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Emergency notice (cont.) WORKERS COMPENSATION ACT B.C. Reg. 296/97 # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations ## Notice to occupants of proximate structures - 21.90 (1) The employer conducting a blasting operation must ensure that the following persons are notified in writing at least 48 hours before any blasting begins: (a) the senior administrator or person in charge of each school, hospital or medical clinic within the applicable proximity zone; (b) the occupants of any other potentially occupied structure within the applicable proximity zone. (2) The notice required under subsection (1) must include (a) a description of the work to be done, (b) the date and approximate time blasting will begin, (c) the anticipated duration of the blasting operation, (d) an explanation of the blasting signals to be used and the meaning of those signals, and (e) the name and phone number of the employer conducting the blasting operation. [en. B.C. Reg. 207/2021, App. A, S. 66.] ## Written plan - 21.91 A written plan must (a) be developed by a blasting professional who (i) has at least 5 years of experience in blasting operations in an urban environment, including knowledge of and expertise in blast design to control vibration, air overpressure, flying material and other potential hazards, and (ii) holds a valid blaster's certificate as referred to in Division 2 or is a registered member in good standing of (A) the Association of Professional Engineers and Geoscientists of the Province of British Columbia, (B) the Applied Science Technologists and Technicians of British Columbia, or (C) a similar professional association, in British Columbia or another province in Canada, that requires its members to adhere to a code of ethics, (b) provide for effective monitoring of ground vibration and air overpressure, and (c) specify the limits f…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Drilling equipment (cont.) WORKERS COMPENSATION ACT B.C. Reg. 296/97 # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 12 - Tools, Machinery and Equipment (a) a rock drill is not used unless equipped with a water jet or other device capable of suppressing rock dust, and (b) adequate restraining devices are installed on hose connections under pressure, if inadvertent disconnection could endanger workers. ## Control location 12.86 Operating controls must not be installed on the feed slide of a top-hammer percussion drill. ## Boom hazard 12.87 A worker must not proceed beyond the front of the drill controls of a drill jumbo if the drills are in operation, unless the drilling equipment is specifically designed and certified for that purpose. ## Drill jumbos - 12.88 (1) A drill jumbo that contains decks must be (a) fitted with guardrails and toeboards, meeting the requirements of Part 4 (General Conditions), around the upper decks, (b) equipped with a rack or receptacle for securely storing drill rods and other equipment, (c) provided with safe access to each working level, (d) provided with a visual warning system to warn workers located below the upper decks, before a worker above collars a hole or removes the boom stabilizer from the face after finishing a hole, and (e) securely fixed in position at the face to prevent inadvertent movement during drilling operations. (2) Explosives must not be brought onto or under a drill jumbo during a drilling operation, nor may holes be loaded until drilling is complete. ## Drilling procedures - 12.89 A driller must ensure that (a) the cut is not drilled in the same location as the previous round, (b) holes are not drilled within 15 cm (6 in) of any part of a bootleg as defined in section 21.1, and (c) there is no drilling at a face when a hole is loaded or being loaded with explosives except in conformity with the requirements on drilling …

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Fume class (cont.) B.C. Reg. 296/97 WORKERS COMPENSATION ACT # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 22 - Underground Workings ## Blasting line 22.76 The blasting line must (a) meet the requirements of CSA Standard CAN/CSA-M421-93, Use of Electricity in Mines, (b) be readily identifiable as blasting cable, (c) be suspended from insulated supports, and (d) not be located in close proximity to any electrical lighting or power line. [am. B.C. Reg. 312/2003, App. A, S. 5.] ## Remote initiation 22.77 Where a safe means of exit can not be guaranteed, such as in a shaft or raise, a remote means of initiation must be used. ## Water spray 22.78 An effective water spray (atomizer) must be activated in every development heading at the time of the blast. ## Return to blasting site - 22.79 (1) Written procedures for atmospheric testing and return to the blast site must be developed for each underground working. (2) Workers must be trained in the procedures and copies must be readily available to all workers for reference. (3) After a blast is detonated, workers must not return to the blast site until (a) a minimum of 10 minutes has elapsed, and (b) tests have confirmed that the concentrations of carbon monoxide or nitrogen dioxide do not exceed the exposure limits prescribed in this Regulation, the oxygen level is not less than 19.5%, and the concentrations of flammable substances are under 20% of their lower explosive limit. (4) Testing must be carried out cautiously by a qualified person, following established safe work procedures which will prevent exposure to levels above exposure limits. ## Work restriction - 22.80 Before other work can take place in a blast site, (a) all hazards must be identified and controlled, (b) adequate dust suppression controls must be in place before mucking, and (c) loose material must be scaled, trimmed or otherwise stabilized by the use of equipm…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Safe operation (cont.) WORKERS COMPENSATION ACT B.C. Reg. 296/97 # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations (a) and (b) Repealed. [B.C. Reg. 207/2021, App. A. S. 25 (b).] [en. B.C. Reg. 312/2003, App. E, S. 18; am. B.C. Reg. 207/2021, App. A, S. 25.] 21.30 Repealed. [B.C. Reg. 207/2021, App. A, S. 26.] ## Firefighting equipment - 21.31 A vehicle transporting explosives must be equipped with at least 2 fire extinguishers that (a) have a rating of at least 4-A:40-B:C, and (b) are readily accessible for use. [en. B.C. Reg. 207/2021, App. A, S. 27.] ## Trailer transportation 21.32 Explosives must not be transported in a trailer, or in any type of semitrailer unless it is equipped with power brakes operable from the tractor cab. ## Railroad and highway crossings - 21.33 The operator of a vehicle transporting explosives must, before crossing (a) a railroad track protected by an automatic signal device, reduce the speed of the vehicle and establish that the crossing can be made in safety, and (b) a main highway, or a railroad track that is not protected by an automatic signal device, completely stop the vehicle and only proceed when the way is safely clear. - 21.34 Repealed. [B.C. Reg. 207/2021, App. A, S. 28.] ## Overnight parking - 21.35 (1) When a vehicle carrying or containing explosives is to be parked overnight, the premises in which the vehicle will be parked must not be used for any other purpose which may involve any substance likely to cause explosion or fire. (2) Such premises must be away from habitation and buildings that contain flammable materials. (3) Repealed. [B.C. Reg. 312/2003, App. E, S. 19.] [am. B.C. Reg. 312/2003, App. E, S. 19.] ## Division 5 - Handling Explosives 21.36 Repealed. [B.C. Reg. 207/2021, App. A, S. 30.] ## Defective explosives 21.37 Explosive or blasting materials or accessories that have deteriorated, or are believed t…

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# Part 21 - Blasting Operations (cont.) ## Drilling prohibitions (cont.) WORKERS COMPENSATION ACT B.C. Reg. 296/97 # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations (a) 15 cm (6 in) of any part of a bootleg, or (b) 6 m (20 ft) of any part of a hole containing explosives, unless prior written permission has been obtained from the Board. [am. B.C. Reg. 207/2021, App. A, S. 36.] ## Drill hole size 21.44 Each drill hole to be loaded with explosives must be of sufficient diameter to permit free insertion of the explosives to the bottom of the hole without ramming, pounding, cutting, or undue pressure. ## Anomalous drill hole - 21.44.1 (1) A detailed report of each anomalous drill hole that requires changes to the blasting plan must be maintained at the worksite. (2) The anomalous drill hole report must contain (a) the date, location, burden, spacing, depth, diameter, angle and marking of each drill hole, and (b) any changes in geology, including (i) the presence of subsurface water, mud seams or voids, and (ii) similar details. (3) The blaster must review the anomalous drill hole report before loading begins. (4) Each anomalous drill hole referred to in subsection (1) must be clearly marked at the worksite. [en. B.C. Reg. 207/2021, App. A, S. 37.] ## Division 7 - Loading Priming 21.45 A primer must not be made up until immediately before placing the explosives. Carrying 21.46 Persons must not carry explosives in their clothing. [am. B.C. Reg. 207/2021, App. A, S. 39.] ## Cartridges 21.47 Wrappers must not be removed from cartridge explosives. ## Loading tools 21.48 Explosives must not be loaded into a hole except with a loading tool made of wood, plastic or other non-sparking material. Last amended March 31, 2025 445 Consolidation current to March 31, 2025

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Pneumatic loading (cont.) WORKERS COMPENSATION ACT B.C. Reg. 296/97 # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations (2) Prior written permission of the Board must be obtained before any pneumatic loading is carried out at a hole which contains an electric detonator or electronic detonator. [am. B.C. Reg. 14/2019, App. D, S. 4.] ## Division 8 - Safety Fuse Assembly Initiation ## Safety fuse assemblies - 21.56 (1) Only safety fuse assemblies with antistatic protection may be used for safety fuse blasting. (2) Safety fuse assemblies less than 1 m (3.3 ft) in length must not be used. (3) Safety fuse assemblies must be handled with care to avoid pinching or kinking and damaged fuse assemblies must not be used. ## Lighting safety fuse assembly - 21.57 (1) When lighting a single safety fuse assembly a match may be used. (2) When multiple safety fuse assemblies are to be lit, a suitable safety fuse lighting device must be used to ensure that a minimum 90 cm (3 ft) fuse length safety factor is maintained. (3) An igniter cord must not be used for lighting a safety fuse assembly. [am. B.C. Reg. 207/2021, App. A, S. 43.] ## Division 9 - Electrical Initiation ## Stray currents - 21.58 (1) Precautions must be taken to prevent premature initiation of electric detonators, electronic detonators and electric igniters from sources of electricity. (2) Electric blasting circuits must be kept on the ground with bare connections suffi- ciently elevated to prevent current leakage. [am. B.C. Reg. 14/2019, App. D, S. 5.] ## Extraneous currents 21.59 Except as permitted by the manufacturer, electric detonators or electric igniters must not be used when extraneous current exceeds 50 milliamps. [am. B.C. Regs. 14/2019, App. D, S. 6; 207/2021, App. A, S. 45.] ## Static electricity - 21.60 (1) Precautions must be taken during handling of electric detonators, electronic detonators and elec…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Firing lines (cont.) B.C. Reg. 296/97 WORKERS COMPENSATION ACT # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations ## Firing all holes - 21.68 (1) Charges must be fired in logical sequence. (2) If any detonation could affect other charges placed nearby, all of the charges must be fired in one operation. ## Blasting signals - 21.69 (1) The blaster must ensure that an audible signalling device, distinct from other signalling devices in the area, is used to give the following warning signals: (a) preceding the blast, 12 short whistle signals must be sounded at one second intervals; (b) two minutes must elapse after the last warning signal before initiating the blast; (c) following the blast and after the area has been examined and found safe, one prolonged whistle signal of at least 5 seconds duration must be sounded, to signify that permission is granted to return to the blast site. (2) Subsection (1) does not apply to oil and gas downhole explosives operations, avalanche control, single underground headings, buried seismic work in isolated locations or other circumstances deemed appropriate by the Board, in which case the blaster must ensure that alternative warning procedures acceptable to the Board are used. (3) Subsection (1) (b) does not apply with respect to the 2 minute warning in congested areas if alternative warning procedures acceptable to the Board are developed and implemented. [am. B.C. Regs. 14/2019, App. D, S. 12; 207/2021, App. A, S. 49.] ## Posting warning procedures 21.70 The employer must ensure that the warning procedure and blasting signals to be used at the workplace are posted conspicuously at each blasting operation, and workers must be instructed in this information. ## Division 11 - After the Blast ## After the blast 21.71 After a blast is initiated, the blaster of record must not permit anyone to enter the blast site until (a) the blas…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Written plan (cont.) B.C. Reg. 296/97 WORKERS COMPENSATION ACT # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations ## Suspension of blasting 21.92 If, in respect of peak particle velocity, frequency response or air overpressure, a limit specified under section 21.91 (c) is exceeded, all blasting must be suspended until a person who meets the requirements of paragraph (a) of that section has (a) determined why the limit was exceeded, and (b) updated the written plan, if necessary. [en. B.C. Reg. 207/2021, App. A, S. 66.] ## General requirements - 21.93 (1) All material to be blasted must be covered by blasting mats in good working condition. (2) The blast hole diameter must not exceed 75 mm (3 in). (3) The bench height to burden ratio must be at least 2 to 1. (4) In respect of blast holes, (a) all blast holes must be effectively stemmed with small crushed aggregate rock or an energy confinement device, and (b) the use of drill cuttings alone does not meet the requirements of paragraph (a). (5) Safety fuse assemblies must not be used. (6) When using ammonium nitrate/fuel oil, slurries, water gels or other bulk explosives, the employer must ensure that (a) the work is conducted in accordance with recognized safe blasting practices and manufacturer's instructions, (b) the critical hole diameter is not smaller than the minimum critical hole diameter recommended by the manufacturer, (c) the fumes of the detonated product do not affect workers or other persons at or near the blast site, and (d) additional precautions are taken in fractured ground and in wet holes. [en. B.C. Reg. 207/2021, App. A, S. 66.] 458 Last amended March 31, 2025 Consolidation current to March 31, 2025

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION B.C. Reg. 296/97 (cont.) ## Contents (cont.) <table><tr><th>Division 1 - General Requirements</th><th>435</th></tr><tr><td>Division 2 - Certification of Blasters</td><td>438</td></tr><tr><td>Division 3 - Storage</td><td>439</td></tr><tr><td>Division 4 - Transportation</td><td>440</td></tr><tr><td>Division 5 - Handling Explosives</td><td>443</td></tr><tr><td>Division 6 - Drilling</td><td>444</td></tr><tr><td>Division 7 - Loading</td><td>445</td></tr><tr><td>Division 8 - Safety Fuse Assembly Initiation</td><td>447</td></tr><tr><td>Division 9 - Electrical Initiation</td><td>447</td></tr><tr><td>Division 10 - Firing</td><td>449</td></tr><tr><td>Division 11 - After the Blast</td><td>450</td></tr><tr><td>Division 12 - Misfire Procedures</td><td>451</td></tr><tr><td>Division 13 - Specialized Blasting Operations</td><td>453</td></tr><tr><td>Division 14 - Close Proximity Blasting</td><td>456</td></tr><tr><td colspan="2">PART 22 - UNDERGROUND WORKINGS [sections 22.1 - 22.160]</td></tr><tr><td>General Requirements</td><td>460</td></tr><tr><td>Supervision of Workers</td><td>463</td></tr><tr><td>Working Requirements</td><td>465</td></tr><tr><td>Emergency Requirements</td><td>472</td></tr><tr><td>Entrance to Underground Working</td><td>475</td></tr><tr><td>Ground Control</td><td>476</td></tr><tr><td>Drilling</td><td>477</td></tr><tr><td>Underground Use of Explosives</td><td>478</td></tr><tr><td>Mechanical Excavation</td><td>481</td></tr><tr><td>Fixed and Mobile Equipment in Underground Working</td><td>481</td></tr><tr><td>Underground Haulage</td><td>483</td></tr><tr><td>Trackless Loading and Hauling</td><td>485</td></tr><tr><td>Waste Dumps and Spoil Areas</td><td>486</td></tr><tr><td>Raises</td><td>489</td></tr><tr><td>Hoists and Shafts</td><td>496</td></tr><tr><td>Large Diameter Holes</td><td>496</td></tr><tr><td>Gassy Underground Workings</td><td>497</td></tr><tr><td colspan="2">PART 23 - OIL AND GAS [sections 23.1 - 23.89]</td></tr…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Cutoffs and unexploded explosives (cont.) WORKERS COMPENSATION ACT Part 21 - Blasting Operations # OCCUPATIONAL HEALTH AND SAFETY REGULATION B.C. Reg. 296/97 (c) everyone, except the blaster and the equipment operator, is removed from the danger area. [en. B.C. Reg. 207/2021, App. A, S. 58.] ## Excavating and scaling - 21.76 (1) Excavation of blast rock must be carried out with caution by a person trained and competent in the recognition of misfires. (2) Loose rock must be scaled from faces in the worksite and the area stabilized before other work resumes. [en. B.C. Reg. 207/2021, App. A, S. 58.] ## Drilling for refiring - 21.76.1 When drilling is necessary to expose a misfire, the blaster must (a) accurately determine the angle of the hole that contains the misfire, (b) direct the angle and depth of the hole being drilled, and (c) ensure that the hole being drilled is at least 60 cm (2 ft) from any part of the misfire. [en. B.C. Reg. 207/2021, App. A, S. 58.] 21.77 Repealed. [B.C. Reg. 207/2021, App. A, S. 58.] ## Safety fuse assembly reblast 21.78 If a misfire that contains a safety fuse assembly is reblasted, persons must not enter the danger area until 30 minutes after the detonation, unless the blaster of record confirms detonation. [en. B.C. Reg. 207/2021, App. A, S. 59.] ## No relighting 21.79 Relighting a safety fuse assembly is prohibited. [am. B.C. Reg. 207/2021, App. A, S. 60.] 21.80 and 21.81 Repealed. [B.C. Reg. 207/2021, App. A, S. 61.] ## Division 13 - Specialized Blasting Operations ## Underwater blasting - 21.82 (1) Only explosives and blasting accessories recommended by the manufacturer for underwater blasting may be used for underwater blasting. (2) Whenever explosives are being used in underwater blasting operations, a blasting flag (international code "Bravo", a solid red flag) must be displayed. (3) Precautions must be taken to prevent damage to struct…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Loading tools (cont.) B.C. Reg. 296/97 WORKERS COMPENSATION ACT # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations ## Electrical storms 21.49 If there is any sign of thunder or lightning storm activity, all blasting activity must be suspended and the danger area must be cleared and guarded if explosives are present at the blast site. ## Guarding loaded holes - 21.50 (1) Except as permitted by section 21.84, a hole which has been loaded, whether primed or not, but not fired by the end of the working day must not be left unattended. (2) A worker, whose sole responsibility is the security of the explosives, must be posted to ensure that loaded holes are not tampered with while the work crew is absent from the site. ## Vehicles 21.51 Except as permitted by section 21.84, a vehicle or other mechanized equipment must not be driven over a loaded hole. ## Springing holes 21.52 After a hole is "sprung" ample time must be left for the hole to cool before further loading or placing of explosives or blasting accessories takes place. [am. B.C. Reg. 207/2021, App. A, S. 40.] ## Connecting detonating cord - 21.53 (1) When detonating cords are used, the cords must only be interconnected or attached to trunk cords at the last most practicable moment after all holes are loaded. (2) When detonating cords are used to prime a charge, the cord must be cut from the supply reel before, or as soon as possible after the charge is placed. (3) Detonators or detonator connectors must not be attached to a detonating line until everything is in readiness for the blast. ## Shock tubes - 21.54 (1) Shock tubes loaded into holes must not be pulled or snapped. (2) Repealed. [B.C. Reg. 207/2021, App. A, S. 41 (b).] [am. B.C. Reg. 207/2021, App. A, S. 41.] ## Pneumatic loading 21.55 (1) Explosives may only be loaded pneumatically if the procedures and equipment used will prevent buildup of static ele…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Static electricity (cont.) B.C. Reg. 296/97 WORKERS COMPENSATION ACT # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 21 - Blasting Operations ## Radio frequency precautions - 21.61 (1) If the electric blasting circuit is equipped with an electric detonator, minimum distances from radio frequency transmitters as detailed in Institute of Makers of Explosives, Safety Guide for the Prevention of Radio Frequency Radiation Hazards in the Use of Commercial Electric Detonators (Blasting Caps) Safety Library Publication No. 20, December 2011 as amended from time to time, must be maintained. (1.1) If the blasting system is equipped with an electronic detonator or electric igniter, minimum distances from radio frequency transmitters as recommended by the manufacturer must be maintained. (2) If the minimum distance has not otherwise been determined, electric blasting circuits are not permitted within (a) 100 m (330 ft) of a CB radio or other mobile or portable radio frequency transmitter, and (b) 1 000 m (3 300 ft) of an AM or FM radio, TV, or other fixed radio frequency transmitter. [am. B.C. Reg. 14/2019, App. D, S. 8.] ## Mobile transmitters - 21.62 (1) If absolute control of radio frequency transmitters cannot be maintained, for example, on public highways, warning signs must be posted to alert vehicle operators to turn off their transmitters. (2) When electric blasting circuits are being connected, traffic control persons must be posted to instruct vehicle operators to turn radio frequency transmitters off. [am. B.C. Reg. 14/2019, App. D, S. 9.] ## Testing electric blasting circuits - 21.63 (1) The blaster of record must ensure that each electric blasting circuit is tested before firing. (2) In seismic blasting, the blaster of record must ensure that each electric blasting circuit is tested after the blast hole is loaded with explosives and before a plug is placed into the hole. (3) …

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## Coordination of multi-employer workplaces (cont.) B.C. Reg. 296/97 WORKERS COMPENSATION ACT # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 23 - Oil and Gas ## Safe work procedures - 23.5 (1) The employer must identify the work activities or circumstances, including releases of gases, that have caused or may cause significant risk of injury or occupational disease to workers. (2) The employer must analyze the risks arising out of the work activities or circum- stances identified under subsection (1) and implement safe work procedures if the activities or circumstances create a hazard. (3) The procedures implemented under subsection (2) must state the number of workers involved, the steps to be followed and the safety equipment required. ## Control of static electricity - 23.6 (1) When flammable liquids or finely divided materials which may produce a dust which is flammable or explosive are being transferred between containers, the containers must be (a) in firm contact with each other, and (b) continuously electrically bonded throughout the transfer to prevent accumulation of a static electric charge. (2) If tanks, mixers or processing vessels are used for flammable or explosive substances, they must be electrically bonded and grounded while the contents are being transferred. (3) A wellhead may be used as a ground (a) for dissipating static electricity, and (b) if tested and proved acceptable, for an electrical distribution system. [am. B.C. Reg. 142/2017, S. 2.] ## Fire hazards - 23.7 (1) Smoking is prohibited on or about a rig, within 25 m (80 ft) of the well bore and within 25 m (80 ft) of any well, production facility or gas processing plant. (2) Open flames are prohibited within 25 m (80 ft) of the well bore whenever gas may be emitted from the well or any other source. (3) If iron sulfide is removed from a tank (a) the iron sulfide must be kept wetted down until safe…

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# OCCUPATIONAL HEALTH AND SAFETY REGULATION (cont.) ## During excavation (cont.) WORKERS COMPENSATION ACT B.C. Reg. 296/97 # OCCUPATIONAL HEALTH AND SAFETY REGULATION Part 22 - Underground Workings ## Shotcrete - 22.64 (1) The employer must ensure that shotcrete equipment is maintained in good operating condition, and that all practical measures are taken to control dust at the source during shotcreting operations. (2) Only those workers involved in the shotcrete operation may work downwind of the operation unless sampling shows that contaminants are within exposure limits. (3) When shotcrete is being applied (a) the employer must ensure that any worker who may be affected by shotcrete dust is supplied with and uses appropriate personal protective equipment, and (b) there must be a worker at the shotcrete machine capable of immediately stopping the flow of material, in communication with the nozzle worker. ## Operator protection 22.65 Operators of cranes or other mobile equipment engaged in ground control activities must be protected against falling, flying, or intruding objects or material, by means of suitable cabs, screens, grills, shields, deflectors, guards or structures. ## Drilling ## Probe holes - 22.66 (1) Whenever there is the possibility of encountering excessive water, gas, or other hazard, probe holes must be drilled deep enough to identify the hazard or at least 2 rounds ahead of the round to be blasted. (2) All probe results must be recorded in the Underground Record. - Connecting to existing workings - 22.67 (1) The employer must ensure that each underground working supervisor is provided with current development plans for the underground working supervisor's assigned area of responsibility which indicate the size, inclination and length of all development openings and drill holes, and points where openings are or will be within 8 m (25 ft) of a breakthrough. (2) If an active heading is within 8 m (25 ft) of another un…