jswizzle3737/ontario_laws_and_regs huggingface dataset:
176. (1) Only an alloy steel chain or a chain manufactured for the purpose shall be used for hoisting. O. Reg. 213/91, s. 176. (2) No alloy steel chain shall be annealed or welded. O. Reg. 345/15, s. 20. (3) A chain used for hoisting shall, (a) be labelled to indicate its load rating capacity; (b) be repaired and reconditioned in accordance with the specifications of its manufacturer; (c) after being repaired or reconditioned, be proof tested in accordance with the specifications of its manufacturer; and (d) be visually inspected by a competent worker as frequently as recommended by its manufacturer and, in any case, at least once a week when the chain is in service. O. Reg. 345/15, s. 20.
177. Revoked: O. Reg. 345/15, s. 21.
178. A friction-type clamp used in hoisting materials shall be constructed so that an accidental slackening of the hoisting cable does not release the clamp. O. Reg. 213/91, s. 178.
179. (1) If a worker may be endangered by the rotation or uncontrolled motion of a load being hoisted by a crane or similar hoisting device, one or more guide ropes or tag lines shall be used to prevent the rotation or uncontrolled motion. O. Reg. 213/91, s. 179 (1). Note: On January 1, 2024, section 179 of the Regulation is amended by striking out “similar hoisting device” and substituting “other hoisting device”. (See: O. Reg. 241/23, s. 25) (2) No guide rope or tag line shall be removed from a load referred to in subsection (1) until the load is landed and there is no danger of it tipping, collapsing or rolling. O. Reg. 213/91, s. 179 (2).
180. (1) Piles and sheet-piling shall be adequately supported to prevent their uncontrolled movement while they are being hoisted, placed, removed or withdrawn. O. Reg. 213/91, s. 180 (1). (2) No worker shall be in an area where piles or sheet-piling are being hoisted, placed, removed or withdrawn unless the worker is directly engaged in the operation. O. Reg. 213/91, s. 180 (2). Electrical Hazards
181. (1) Except where otherwise required by this Regulation, electrical work performed on or near electrical transmission or distribution systems shall be performed in accordance with the document entitled “Electrical Utility Safety Rules” published by the Infrastructure Health and Safety Association and revised 2019. O. Reg. 627/05, s. 4; O. Reg. 443/09, s. 5; O. Reg. 345/15, s. 22; O. Reg. 327/19, s. 2. (2) Sections 182, 187, 188, 189, 190, 191 and 193 do not apply to electrical work that is performed on or near electrical transmission or distribution systems if the work is performed in accordance with the document referred to in subsection (1). O. Reg. 627/05, s. 4.
182. (1) No worker shall connect, maintain or modify electrical equipment or installations unless, (a) the worker holds a certificate of qualification or a provisional certificate of qualification issued under the Building Opportunities in the Skilled Trades Act, 2021, that is not suspended, in the trade of, (i) electrician — construction and maintenance, or (ii) electrician — domestic and rural, if the worker is performing work that is limited to the scope of practice for that trade; or (b) the worker is otherwise permitted to connect, maintain or modify electrical equipment or installations under the Building Opportunities in the Skilled Trades Act, 2021 or the Technical Standards and Safety Act, 2000. O. Reg. 627/05, s. 4; O. Reg. 88/13, s. 2; O. Reg. 885/21, s. 1, 2. (2) A worker who does not meet the requirements of clause (1) (a) or (b) may insert an attachment plug cap on the cord of electrical equipment or an electrical tool into, or remove it from, a convenience receptacle. O. Reg. 627/05, s. 4.
183. Every reasonable precaution shall be taken to prevent hazards to workers from energized electrical equipment, installations and conductors. O. Reg. 627/05, s. 6.
184. (1) No person, other than a person authorized to do so by the supervisor in charge of the project, shall enter or be permitted to enter a room or other enclosure containing exposed energized electrical parts. O. Reg. 627/05, s. 7. (2) The entrance to a room or other enclosure containing exposed energized electrical parts shall be marked by conspicuous warning signs stating that entry by unauthorized persons is prohibited. O. Reg. 627/05, s. 7.
185. (1) Electrical equipment, installations, conductors and insulating materials shall be suitable for their intended use and shall be installed, maintained, modified and operated so as not to pose a hazard to a worker. O. Reg. 627/05, s. 7. (2) For greater certainty, the regulations made under section 113 of the Electricity Act, 1998 apply to electrical equipment, installations, conductors and insulating materials and to temporary wiring installations on projects. O. Reg. 627/05, s. 7.
186. Electrical equipment, installations and conductors that are not to be used for the purpose for which they were designed shall be, (a) removed; or (b) left in an electrically non-hazardous condition by being disconnected, de-energized, tagged and, (i) grounded, in the case of power lines, (ii) locked out, in the case of electrical equipment. O. Reg. 627/05, s. 7.
187. Tools, ladders, scaffolding and other equipment or materials capable of conducting electricity shall not be stored or used so close to energized electrical equipment, installations or conductors that they can make electrical contact. O. Reg. 627/05, s. 7.
188. (1) This section applies unless the conditions set out in clauses 189 (a) and (b) are satisfied. O. Reg. 627/05, s. 7. (2) No object shall be brought closer to an energized overhead electrical conductor with a nominal phase-to-phase voltage rating set out in Column 1 of the Table to this subsection than the distance specified opposite to it in Column 2. TABLE Item   Column 1   Nominal phase-to-phase voltage rating   Column 2   Minimum distance 

  1.   750 or more volts, but no more than 150,000 volts   3 m 

  2.   more than 150,000 volts, but no more than 250,000 volts   4.5 m 

  3.   more than 250,000 volts   6 m O. Reg. 627/05, s. 7; O. Reg. 345/15, s. 23. (3) Subsections (4) to (9) apply if a crane, similar hoisting device, backhoe, power shovel or other vehicle or equipment is operated near an energized overhead electrical conductor and it is possible for a part of the vehicle or equipment or its load to encroach on the minimum distance permitted under subsection (2). O. Reg. 627/05, s. 7. (4) A constructor shall, (a) establish and implement written measures and procedures adequate to ensure that no part of a vehicle or equipment or its load encroaches on the minimum distance permitted by subsection (2); and (b) make a copy of the written measures and procedures available to every employer on the project. O. Reg. 627/05, s. 7. (5) The written measures and procedures shall include taking the following precautions to protect workers: 1. Adequate warning devices, visible to the operator and warning of the electrical hazard, shall be positioned in the vicinity of the hazard. 2. The operator shall be provided with written notification of the electrical hazard before beginning the work. 3. A legible sign, visible to the operator and warning of the potential electrical hazard, shall be posted at the operator’s station. O. Reg. 627/05, s. 7. (6) Before a worker begins work that includes an activity described in subsection (3), the employer shall provide a copy of the written measures and procedures to the worker and explain them to him or her. O. Reg. 627/05, s. 7. (7) The worker shall follow the written measures and procedures. O. Reg. 627/05, s. 7. (8) A competent worker, designated as a signaller, shall be stationed so that he or she is in full view of the operator and has a clear view of the electrical conductor and of the vehicle or equipment, and shall warn the operator each time any part of the vehicle or equipment or its load may approach the minimum distance. O. Reg. 627/05, s. 7. (9) Section 106 also applies with respect to the signaller designated under subsection (8). O. Reg. 627/05, s. 7.
189. Section 188 does not apply if, (a) under the authority of the owner of the electrical conductor, protective devices and equipment are installed, and written measures and procedures are established and implemented, that are adequate to protect workers from electrical shock and burn; and (b) the workers involved in the work use protective devices and equipment, including personal protective equipment, and follow written measures and procedures that are adequate to protect workers from electrical shock and burn. O. Reg. 627/05, s. 7.
190. (1) This section applies if work is to be done on or near energized exposed parts of electrical equipment or of an electrical installation or conductor. O. Reg. 627/05, s. 7. (2) An employer shall, (a) establish and implement written measures and procedures for complying with this section to ensure that workers are adequately protected from electrical shock and burn; and (b) make a copy of the written measures and procedures available to every worker on the project. O. Reg. 627/05, s. 7. (3) The worker shall follow the written measures and procedures. O. Reg. 627/05, s. 7. (4) Subject to subsection (9), the power supply to the electrical equipment, installation or conductor shall be disconnected, locked out of service and tagged in accordance with subsection (6) before the work begins, and kept disconnected, locked out of service and tagged while the work continues. O. Reg. 627/05, s. 7. (5) Hazardous stored electrical energy shall be adequately discharged or contained before the work begins and shall be kept discharged or contained while the work continues. O. Reg. 627/05, s. 7. (6) The following rules apply to the tagging of the power supply under subsection (4): 1. The tag shall be made of non-conducting material and shall be installed so as not to become energized. 2. The tag shall be placed in a conspicuous location and shall be secured to prevent its inadvertent removal. 3. The tag shall indicate, i. why the equipment, installation or conductor is disconnected, ii. the name of the person who disconnected the equipment, installation or conductor, iii. the name of the person’s employer, and iv. the date on which the equipment, installation or conductor was disconnected. 4. The tag shall not be removed unless it is safe to do so. O. Reg. 627/05, s. 7. (7) A worker, before beginning work to which this section applies, shall verify that subsections (4) and (5) have been complied with. O. Reg. 627/05, s. 7. (8) If more than one worker is involved in work to which this section applies, a means shall be provided to communicate the purpose and status of, (a) the disconnecting, locking out and tagging of the electrical equipment, installation or conductor; and (b) the discharging and containment of any hazardous stored electrical energy. O. Reg. 627/05, s. 7. (9) Locking out is not required under subsection (4) if, (a) in the case of a conductor, it is adequately grounded with a visible grounding mechanism; (b) in the case of equipment or an installation, (i) the power supply is less than 300 volts, the equipment or installation was not manufactured with provision for a locking device for the circuit breakers or fuses, and a written procedure has been implemented that is adequate to ensure that the circuit is not inadvertently energized, or (ii) the power supply is 300 or more volts but not more than 600 volts, the equipment or installation was not manufactured with provision for a locking device for the circuit breakers or fuses, a written procedure as to how work is to be done has been implemented and the work is supervised by a competent worker to ensure that the circuit is not inadvertently energized. O. Reg. 627/05, s. 7.
191. (1) This section applies instead of section 190 if work is to be done on or near energized exposed parts of electrical equipment or of an electrical installation or conductor and,  (a) it is not reasonably possible to disconnect the equipment, installation or conductor from the power supply before working on or near the energized exposed parts; (b) the equipment, installation or conductor is rated at a nominal voltage of 600 volts or less, and disconnecting the equipment, installation or conductor would create a greater hazard to a worker than proceeding without disconnecting it; or (c) the work consists only of diagnostic testing of the equipment, installation or conductor. O. Reg. 627/05, s. 7. (2) Subsection (10) applies, in addition to subsections (3) to (9), if the equipment, installation or conductor is nominally rated at, (a) greater than 400 amperes and greater than 200 volts; or (b) greater than 200 amperes and greater than 300 volts. O. Reg. 627/05, s. 7. (3) Only a worker who meets the requirements of clause 182 (1) (a) or (b) shall perform the work. O. Reg. 627/05, s. 7. (4) The constructor shall, (a) ensure that written measures and procedures for complying with this section are established and implemented, so that workers are adequately protected from electrical shock and burn; and (b) make a copy of the written measures and procedures available to every employer on the project. O. Reg. 627/05, s. 7. (5) Before a worker begins work to which this section applies, the employer shall provide a copy of the written measures and procedures to the worker and explain them to him or her. O. Reg. 627/05, s. 7. (6) The worker shall follow the written procedures. O. Reg. 627/05, s. 7. (7) A worker shall use mats, shields or other protective devices or equipment, including personal protective equipment, adequate to protect the worker from electrical shock and burn. O. Reg. 627/05, s. 7. (8) If the electrical equipment, installation or conductor is rated at a nominal voltage of 300 volts or more, an adequately equipped competent worker who can perform rescue operations, including cardiopulmonary resuscitation, shall be stationed so that he or she can see the worker who is performing the work. O. Reg. 627/05, s. 7. (9) Subsection (8) does not apply if the work consists only of diagnostic testing of the equipment, installation or conductors. O. Reg. 627/05, s. 7. (10) In the case of equipment or of an installation or conductor described in subsection (2), a worker shall not perform the work unless the following additional conditions are satisfied: 1. The owner of the equipment, installation or conductor has provided the employer and the constructor with a record showing that it has been maintained according to the manufacturer’s specifications. 2. A copy of the maintenance record is readily available at the project. 3. The employer has determined from the maintenance record that the work on the equipment, installation or conductor can be performed safely without disconnecting it. 4. Before beginning the work, the worker has verified that paragraphs 1, 2 and 3 have been complied with. O. Reg. 627/05, s. 7.
192. All tools, devices and equipment, including personal protective equipment, that are used for working on or near energized exposed parts of electrical equipment, installations or conductors shall be designed, tested, maintained and used so as to provide adequate protection to workers. O. Reg. 627/05, s. 7.
193. (1) A worker who may be exposed to the hazard of electrical shock or burn while performing work shall use rubber gloves, (a) that are adequate to protect him or her against electrical shock and burn; (b) that have been tested and certified in accordance with subsection (2), if applicable; and (c) that have been air tested and visually inspected for damage and adequacy immediately before each use. O. Reg. 627/05, s. 7. (2) Rubber gloves rated for use with voltages above 5,000 volts AC shall be tested and certified to ensure that they can withstand the voltages for which they are rated, (a) at least once every three months, if they are in service; (b) at least once every six months, if they are not in service. O. Reg. 627/05, s. 7. (3) Rubber gloves shall be worn with adequate leather protectors and shall not be worn inside out. O. Reg. 627/05, s. 7. (4) Leather protectors shall be visually inspected for damage and adequacy immediately before each use. O. Reg. 627/05, s. 7. (5) Rubber gloves or leather protectors that are damaged or not adequate to protect workers from electrical shock and burn shall not be used. O. Reg. 627/05, s. 7. (6) Workers shall be trained in the proper use, care and storage of rubber gloves and leather protectors. O. Reg. 627/05, s. 7.
194. (1) A switch and panel board controlling a service entrance, service feeder or branch circuit shall meet the requirements of this section. O. Reg. 627/05, s. 7. (2) A switch and panel board shall be securely mounted on a soundly constructed vertical surface and shall have a cover over uninsulated parts carrying current. O. Reg. 627/05, s. 7. (3) A switch and panel board shall be located, (a) in an area where water will not accumulate; and (b) within easy reach of workers and readily accessible to them. O. Reg. 627/05, s. 7. (4) The area in front of a panel board shall be kept clear of obstructions. O. Reg. 627/05, s. 7. (5) A switch that controls a service entrance, service feeder or branch circuit providing temporary power, (a) shall not be locked in the energized position; and (b) shall be housed in an enclosure that can be locked and is provided with a locking device. O. Reg. 627/05, s. 7.
195. All electrical extension cords used at a project shall have a grounding conductor and at least two other conductors. O. Reg. 627/05, s. 7.
195.1 (1) Cord-connected electrical equipment or tools shall have a casing that is adequately grounded. O. Reg. 627/05, s. 7. (2) All cord connections
to electrical equipment or tools shall be polarized. O. Reg. 627/05, s. 7. (3) Subsections (1) and (2) do not apply to cord-connected electrical equipment or tools that are adequately double-insulated and whose insulated casing shows no evidence of cracks or defects. O. Reg. 627/05, s. 7. (4) Subsection (1) does not apply to a portable electrical generator in which the electrical equipment or tools are not exposed to an external electric power source if the casing of portable electrical equipment or tools connected to the generator is bonded to a non-current-carrying part of the generator. O. Reg. 627/05, s. 7.
195.2 When a portable electrical tool is used outdoors or in a wet location, (a) if the source of power is an ungrounded portable generator having a maximum output of 1.8 kilowatts or less, a ground fault circuit interrupter of the Class A type shall be located in the cord feeding the tool, as close to the tool as possible; (b) in all other cases, the tool shall be plugged into a receptacle protected by a ground fault circuit interrupter of the Class A type. O. Reg. 627/05, s. 7.
195.3 (1) Defective electrical equipment and tools that may pose a hazard shall be immediately disconnected, removed from service and tagged as being defective. O. Reg. 627/05, s. 7. (2) The cause of a ground fault or the tripping of a ground fault circuit interrupter shall be immediately investigated to determine the hazard and corrective action shall be taken immediately. O. Reg. 627/05, s. 7. Explosives
196. (1) If explosives are to be used on a project, the employer responsible for blasting shall designate a competent worker to be in charge of blasting operations. O. Reg. 213/91, s. 196 (1). (2) The employer shall post the name of the worker in charge of blasting operations for a project in a conspicuous place on the project and in every magazine. O. Reg. 213/91, s. 196 (2). (3) The worker in charge of blasting operations for a project shall personally supervise blasting operations at the project, including the loading, priming and initiating of all charges. O. Reg. 213/91, s. 196 (3). (4) The worker in charge of blasting operations for a project, (a) shall inspect for hazardous conditions explosives and the magazines in which they are stored, (i) at least once a month, and (ii) on the day they are to be used; (b) shall promptly report the results of inspections under clause (a) to the supervisor in charge of the project; (c) shall take immediate steps to correct any hazardous condition; and (d) shall dispose of all deteriorated explosives. O. Reg. 213/91, s. 196 (4). (5) If an act of careless placing or handling of explosives on the project is discovered by, or reported to the worker in charge of blasting operations, the worker shall promptly investigate the circumstances and report the results of the investigation to the supervisor in charge of the project. O. Reg. 213/91, s. 196 (5).
197. Only a competent worker or a worker who is working under the direct personal supervision of a competent worker shall handle, transport, prepare and use explosives on a project. O. Reg. 213/91, s. 197.
198. (1) A magazine containing an explosive shall be securely locked at all times when the competent worker described in section 197 is not present. O. Reg. 213/91, s. 198 (1). (2) No explosive shall be outside a magazine unless the explosive is required for immediate use. O. Reg. 213/91, s. 198 (2). (3) An explosive outside a magazine shall be attended at all times. O. Reg. 213/91, s. 198 (3).
199. An explosive shall remain in its original wrapper unless it is manufactured and intended for use other than in its original wrapper. O. Reg. 213/91, s. 199.
200. (1) No fire or other naked flame shall be located in a magazine or eight metres or less from any explosive. O. Reg. 142/17, s. 22. (2) No person shall smoke in a magazine or eight metres or less from any explosive. O. Reg. 142/17, s. 22.
201. Blasting mats shall be used to prevent flying objects caused by blasting operations from endangering persons and property located on or adjacent to a project. O. Reg. 213/91, s. 201.
202. (1) This section applies if electric blasting caps are used on a project. O. Reg. 213/91, s. 202 (1). (2) The protective shunt shall not be removed from the leg wire until connections are made. O. Reg. 213/91, s. 202 (2). (3) The firing circuit shall be short-circuited while the leads from the blasting caps are being connected to each other and to the firing cables. O. Reg. 213/91, s. 202 (3). (4) The short circuit shall not be removed until immediately before blasting and until all workers have left the area affected by the blasting operations. O. Reg. 213/91, s. 202 (4). (5) The source of energy for a blasting operation shall be disconnected from the firing circuit immediately after firing. O. Reg. 213/91, s. 202 (5).
203. (1) Before blasting begins, the worker in charge of blasting operations shall post workers at the approaches to the affected area in order to prevent access to it. O. Reg. 213/91, s. 203 (1). (2) Before blasting begins, the worker in charge of blasting operations shall ensure, (a) that only workers required to carry out the blasting are located in the affected area; (b) that no workers remain in an area whose means of egress passes the affected area; and (c) that a warning that is clearly audible within a radius of one kilometre of the blast is given by siren. O. Reg. 213/91, s. 203 (2).
204. (1) Before a drill hole for loading explosives is drilled, the exposed surface shall be examined for drill holes or remnants of drill holes that may contain explosives and any explosive found shall be removed if practicable. O. Reg. 213/91, s. 204 (1). (2) No drill hole shall be drilled, (a) 7.5 metres or less from another hole that is being loaded with or contains explosives; and (b) 150 millimetres or less from another hole or remnant of a hole that has been charged or blasted unless adequate precautions have been taken to ensure that the other hole is free from explosives. O. Reg. 213/91, s. 204 (2); O. Reg. 142/17, s. 23 (1, 2). (3) Clause (2) (a) does not apply to a hole being drilled adjacent to another hole that is being loaded with explosives, (a) if an engineer prepares a specification showing the location of the drill hole and the adjacent hole and describing the precautions to be taken to prevent the accidental detonation by the drilling operation of the explosives in the adjacent hole; and (b) if the drilling is done as described in the specification referred to in clause (a). O. Reg. 213/91, s. 204 (3); O. Reg. 375/22, s. 5. (4) No drill hole permitted under subsection (3) shall be drilled one metre or less from another hole containing explosives. O. Reg. 213/91, s. 204 (4); O. Reg. 142/17, s. 23 (3). (5) The engineer’s specification shall be in writing. O. Reg. 213/91, s. 204 (5); O. Reg. 85/04, s. 20; O. Reg. 375/22, s. 4. (6) The employer responsible for blasting shall keep a copy of the specification at the project until the blasting to which the specification refers is completed. O. Reg. 213/91, s. 204 (6).
205. (1) If cartridges of explosives are to be used in a drill hole, the hole shall be made large enough that a cartridge can be inserted easily to the bottom of the hole. O. Reg. 213/91, s. 205 (1). (2) No drill hole shall be charged with explosives unless a properly prepared detonation agent is placed in the charge. O. Reg. 213/91, s. 205 (2). (3) Drill holes charged with explosives in one loading operation shall be fired in one operation. O. Reg. 213/91, s. 205 (3). (4) No drill hole that is charged with explosives shall be left unfired for any longer than is required in a continuing operation to complete the charging and blasting of adjacent holes. O. Reg. 213/91, s. 205 (4).
206. Only a non-sparking tool or rod shall be used in the charging of a drill hole or in a drill hole containing explosives. O. Reg. 213/91, s. 206. Roofing
207. (1) If a built-up roof is being constructed, repaired or resurfaced, a barrier shall be placed in the immediate work area at least two metres from the perimeter of the roof. O. Reg. 213/91, s. 207 (1). (2) The barrier shall consist of portable weighted posts supporting a taut chain, cable or rope that is located 1.1 metres above the roof level. O. Reg. 213/91, s. 207 (2).
208. (1) A pipe that supplies hot tar or bitumen to a roof shall be securely fixed and supported to prevent its deflection. O. Reg. 213/91, s. 208 (1). (2) If a pipe discharges hot tar or bitumen two metres or less from the edge of a roof, a guardrail shall be provided at the edge of the roof. O. Reg. 213/91, s. 208 (2); O. Reg. 142/17, s. 24.
209. (1) A hoist used on a roof, (a) shall have a guardrail installed on both sides of the frame at the edge of the roof; and (b) shall be positioned in such a way that the hoist cable is vertical at all times while a load is being hoisted. O. Reg. 213/91, s. 209 (1). (2) Only a competent worker shall operate a hoist used on a roof. O. Reg. 213/91, s. 209 (2).
210. The counterweights on a roofer’s hoist, (a) shall be suitable for the purpose; (b) shall not consist of roofing or other construction material; (c) shall be securely attached to the hoist; and (d) shall provide a safety factor against overturning of not less than three. O. Reg. 213/91, s. 210. Hot Tar or Bitumen Roadtankers
211. (1) Only a competent worker shall operate a hot tar or bitumen roadtanker or kettle. O. Reg. 213/91, s. 211 (1). (2) If a hot tar or bitumen roadtanker or kettle is fitted with a propane-fuelled heater, (a) the storage cylinder for propane shall not be placed closer than three metres to a source of fire or ignition; (b) the lines connecting the storage cylinder for propane to the heating device shall be located so that they do not come into contact with the hot tar or bitumen in the case of a spill or a failure of a component of the system; and (c) a fire extinguisher with an Underwriters’ Laboratories of Canada rating of at least 4A40BC shall be provided with the roadtanker or kettle. O. Reg. 213/91, s. 211 (2). (3) A propane burner used on a bitumen roadtanker or kettle, (a) shall have a thermal rating no greater than that recommended by the manufacturer of the roadtanker or kettle; and (b) shall consist of components that are adequate for their intended use. O. Reg. 213/91, s. 211 (3). (4) Hot tar or bitumen shall be transferred from a roadtanker to a kettle through enclosed piping. O. Reg. 213/91, s. 211 (4). Demolition and Damaged Structures
212. (1) If a structure is so damaged that a worker is likely to be endangered by its partial or complete collapse, (a) the structure shall be braced and shored; and (b) safeguards appropriate in the circumstances shall be provided to prevent injury to a worker. O. Reg. 213/91, s. 212 (1). (2) Safeguards shall be installed progressively from a safe area towards the hazard so that the workers installing the safeguards are not endangered. O. Reg. 213/91, s. 212 (2).
213. (1) Only a worker who is directly engaged in the demolition, dismantling or moving of a building or structure shall be in, on or near it. O. Reg. 213/91, s. 213 (1). (2) If the demolition or dismantling of a building or structure is discontinued, barriers shall be erected to prevent access by people to the remaining part of the building or structure. O. Reg. 213/91, s. 213 (2). (3) A worker shall enter only the part of a building or structure being demolished that will safely support the worker. O. Reg. 213/91, s. 213 (3).
214. (1) No building or structure shall be demolished, dismantled or moved until this section is complied with. O. Reg. 213/91, s. 214 (1). (2) Precautions shall be taken to prevent injury to a person on or near the project or the adjoining property that may result from the demolition, dismantling or moving of a building or structure. O. Reg. 213/91, s. 214 (2). (3) All gas, electrical and other services that may endanger persons who have access to a building or structure shall be shut off and disconnected before, and shall remain shut off and disconnected during, the demolition, dismantling or moving of the building or structure. O. Reg. 213/91, s. 214 (3). (4) All toxic, flammable or explosive substances shall be removed from a building or structure that is to be demolished, dismantled or moved. O. Reg. 213/91, s. 214 (4).
215. (1) Sections 216, 217, 218 and 220 do not apply with respect to a building or structure that is being demolished by, (a) a heavy weight suspended by cable from a crane or similar hoisting device; (b) a power shovel, bulldozer or other vehicle; (c) the use of explosives; or (d) a combination of methods described in clauses (a) to (c). O. Reg. 213/91, s. 215 (1). (2) The controls of a mechanical device used to demolish a building or structure shall be operated from a location that is as remote as is practicable from the building or structure. O. Reg. 213/91, s. 215 (2). (3) If a swinging weight is used to demolish a building or structure, the supporting cable of the weight shall be short enough or shall be so restrained that the weight does not swing against another building or  structure. O. Reg. 213/91, s. 215 (3).
216. (1) Demolition and dismantling of a building or structure shall proceed systematically and continuously from the highest to the lowest point unless a worker is endangered by this procedure. O. Reg. 213/91, s. 216 (1). (2) Despite subsection (1), the skeleton structural frame in a skeleton structural frame building may be left in place during the demolition or dismantling of the masonry if the masonry and any loose material are removed from the frame systematically and continuously from the highest to the lowest point. O. Reg. 213/91, s. 216 (2). (3) The work above a tier or floor of a building or structure shall be completed before the support of the tier or floor is affected by demolition or dismantling operations. O. Reg. 213/91, s. 216 (3).
217. No exterior wall of a building or structure shall be demolished until all glass is removed from windows, doors, interior partitions and components containing glass or is protected to prevent the glass from breaking during the demolition. O. Reg. 213/91, s. 217.
218. (1) Masonry walls of a building or structure being demolished or dismantled shall be removed in reasonably level courses. O. Reg. 213/91, s. 218 (1). (2) No materials in a masonry wall of a building or structure being demolished or dismantled shall be loosened or permitted to fall in masses that are likely to endanger, (a) a person; or (b) the structural stability of a scaffold or of a floor or other support of the building or structure. O. Reg. 213/91, s. 218 (2).
219. No worker shall stand on top of a wall, pier or chimney to remove material from it unless flooring, scaffolding or staging is provided on all sides of it not more than 2.4 metres below the place where the worker is working. O. Reg. 213/91, s. 219.
220. No truss, girder or other structural member of a building or structure being demolished or dismantled shall be disconnected until, (a) it is relieved of all loads other than its own weight; and (b) it has temporary support. O. Reg. 213/91, s. 220.
221. (1) A basement, cellar or excavation left after a building or structure is demolished, dismantled or moved, (a) shall be backfilled to grade level; or (b) shall have fencing along its open sides. O. Reg. 213/91, s. 221 (1). (2) Subsection (1) does not apply to a basement or cellar that is enclosed by a roof, floor or other solid covering if all openings in the roof, floor or covering are covered with securely fastened planks. O. Reg. 213/91, s. 221 (2). Part II.1 (ss. 221.1-221.19) Revoked:  O. Reg. 96/11, s. 1. PART III   EXCAVATIONS Interpretation and Application
222. In this Part, “engineered support system” means an excavation or trench shoring system, designed for a specific project or location, assembled in place and which cannot be moved as a unit; (“système de soutien calculé”) “hydraulic support system” means a system capable of being moved as a unit, designed to resist the pressure from the walls of an excavation by applying a hydraulic counterpressure through the struts; (“système de soutien hydraulique”) “prefabricated support system” means a trench box, trench shield or similar structure, composed of members connected to each other and capable of being moved as a unit, and designed to resist the pressure from the walls of an excavation but does not include a hydraulic support system; (“système de soutien préfabriqué”) “pressure”, in relation to a wall of an excavation, means the lateral pressure of the earth on the wall calculated in accordance with generally accepted engineering principles and includes hydrostatic pressure and pressure due to surcharge. (“pression”) O. Reg. 213/91, s. 222; O. Reg. 142/17, s. 25.
223. This Part applies to all excavating and trenching operations. O. Reg. 213/91, s. 223. Entry and Working Alone
224. No person shall enter or be permitted to enter an excavation that does not comply with this Part. O. Reg. 213/91, s. 224.
225. Work shall not be performed in a trench unless another worker is working above ground in close proximity to the trench or to the means of access to it. O. Reg. 213/91, s. 225. Soil Types
226. (1) For the purposes of this Part, soil shall be classified as Type 1, 2, 3 or 4 in accordance with the descriptions set out in this section. O. Reg. 213/91, s. 226 (1). (2) Type 1 soil, (a) is hard, very dense and only able to be penetrated with difficulty by a small sharp object; (b) has a low natural moisture content and a high degree of internal strength; (c) has no signs of water seepage; and (d) can be excavated only by mechanical equipment. O. Reg. 213/91, s. 226 (2). (3) Type 2 soil, (a) is very stiff, dense and can be penetrated with moderate difficulty by a small sharp object; (b) has a low to medium natural moisture content and a medium degree of internal strength; and (c) has a damp appearance after it is excavated. O. Reg. 213/91, s. 226 (3). (4) Type 3 soil is, (a) previously excavated soil; or (b) soil that is stiff to firm or compact to loose in consistency and has one or more of the following characteristics: (i) It exhibits signs of surface cracking. (ii) It exhibits signs of water seepage. (iii) If it is dry, it may run easily into a well-defined conical pile. (iv) It has a low degree of internal strength. O. Reg. 345/15, s. 24. (5) Type 4 soil, (a) is soft to very soft and very loose in consistency, very sensitive and upon disturbance is significantly reduced in natural strength; (b) runs easily or flows, unless it is completely supported before excavating procedures; (c) has almost no internal strength; (d) is wet or muddy; and (e) exerts substantial fluid pressure on its supporting system. O. Reg. 213/91, s. 226 (5).
227. (1) The type of soil in which an excavation is made shall be determined by visual and physical examination of the soil, (a) at the walls of the excavation; and (b) within a horizontal distance from each wall equal to the depth of the excavation measured away from the excavation. O. Reg. 213/91, s. 227 (1). (2) The soil in which an excavation is made shall be classified as the type described in section 226 that the soil most closely resembles. O. Reg. 213/91, s. 227 (2). (3) If an excavation contains more than one type of soil, the soil shall be classified as the type with the highest number as described in section 226 among the types present. O. Reg. 213/91, s. 227 (3). Precautions Concerning Services
228. (1) Before an excavation is begun, (a) the employer excavating shall ensure that all gas, electrical and other services in and near the area to be excavated are located and marked; (b) the employer and worker locating and marking the services described in clause (a) shall ensure that they are accurately located and marked; and (c) if a service may pose a hazard, the service shall be shut off and disconnected. O. Reg. 443/09, s. 6. (2) If a service may pose a hazard and it cannot be shut off or disconnected, the owner of the service shall be requested to supervise the uncovering of the service during the excavation. O. Reg. 443/09, s. 6. (3) Pipes, conduits and cables for gas, electrical and other services in an excavation shall be supported to prevent their failure or breakage. O. Reg. 443/09, s. 6. Protection of Adjacent Structures
229. (1) If an excavation may affect the stability of an adjacent building or structure, the constructor shall take precautions to prevent damage to the adjacent building or structure. O. Reg. 213/91, s. 229 (1). (2) An engineer shall specify in writing the precautions required under subsection (1). O. Reg. 213/91, s. 229 (2); O. Reg. 375/22, s. 5. (3) Such precautions as the engineer specifies shall be taken. O. Reg. 213/91, s. 229 (3); O. Reg. 375/22, s. 5. General Requirements
230. Every excavation that a worker may be required to enter shall be kept reasonably free of water. O. Reg. 213/91, s. 230.
231. An excavation in which a worker may work shall have a clear work space of at least 450 millimetres between the wall of the excavation and any formwork or masonry or similar wall. O. Reg. 213/91, s. 231.
232. (1) The walls of an excavation shall be stripped of loose rock or other material that may slide, roll or fall upon a worker. O. Reg. 213/91, s. 232 (1). (2) The walls of an excavation cut in rock shall be supported by rock anchors or wire mesh if support is necessary to prevent the spalling of loose rock. O. Reg. 213/91, s. 232 (2).
233. (1) A level area extending at least one metre from the upper edge of each wall of an excavation shall be kept clear of equipment, excavated soil, rock and construction material. O. Reg. 213/91, s. 233 (1). (2) The stability of a wall of an excavation shall be maintained where it may be affected by stockpiling excavated soil or rock or construction materials. O. Reg. 213/91, s. 233 (2). (3) No person shall operate a vehicle or other machine and no vehicle or other machine shall be located in such a way as to affect the stability of a wall of an excavation. O. Reg. 213/91, s. 233 (3). (4) If a person could fall into an excavation that is more than 2.4 metres deep, a barrier at least 1.1 metres high shall be provided at the top of every wall of the excavation that is not sloped as described in clauses 234 (2) (e), (f) and (g). O. Reg. 213/91, s. 233 (4). Support Systems
234. (1) The walls of an excavation shall be supported by a support system that complies with sections 235, 236, 237, 238, 239 and 241. O. Reg. 213/91, s. 234 (1). (2) Subsection (1) does not apply with respect to an excavation, (a) that is less than 1.2 metres deep; (b) that no worker is required to enter; (c) that is not a trench and with respect to which no worker is required to be closer to a wall than the height of the wall; (d) that is cut in sound and stable rock; (e) made in Type 1 or Type 2 soil and whose walls are sloped to 1.2 metres or less from its bottom with a slope having a minimum gradient of one vertical to one horizontal; (f) made in Type 3 soil and whose walls are sloped from its bottom with a slope having a minimum gradient of one vertical to one horizontal; (g) made in Type 4 soil and whose walls are sloped from its bottom with a slope having a minimum gradient of one vertical to three horizontal; or (h) that is not a trench and is not made in Type 4 soil and with respect to which an engineer has given a written opinion that the walls of the excavation are sufficiently stable that no worker will be endangered if no support system is used. O. Reg. 213/91, s. 234 (2); O. Reg. 142/17, s. 26; O. Reg. 375/22, s. 5. (3) The opinion in clause (2) (h) shall include details of, (a) the specific project and the location thereon; (b) any specific condition for which the opinion applies; and (c) the frequency of inspections. O. Reg. 213/91, s. 234 (3). (4) The constructor shall keep on the project a copy of every opinion given by an engineer for the purpose of clause (2) (h) while the project is in progress. O. Reg. 213/91, s. 234 (4); O. Reg. 375/22, s. 5. (5) The engineer who gives an opinion described in clause (2) (h), or a competent worker designated by him or her, shall inspect the excavation to which the opinion relates as frequently as the opinion specifies. O. Reg. 213/91, s. 234 (5); O. Reg. 375/22, s. 5.
235. (1) Subject to subsection (2), a support system shall consist of, (a) timbering and shoring that meets the requirements of subsection 238 (2), if no hydrostatic pressure is present in the soil, and if the width and depth of the excavation are equal to or less than the width and depth indicated in the Table to section 238; (b) a prefabricated support system that complies with sections 236 and 237; (c) a hydraulic support system that complies with sections 236 and 237; or (d) an engineered support system that complies with section 236. O. Reg. 213/91, s. 235 (1). (2) Where the excavation is a trench and the depth exceeds six metres or the width exceeds 3.6 metres, the support system shall consist of an engineered support system designed for the specific location and project. O. Reg. 213/91, s. 235 (2); O. Reg. 631/94, s. 7.
236. (1) Every prefabricated, hydraulic or engineered support system shall be designed by an engineer. O. Reg. 213/91, s. 236 (1); O. Reg. 375/22, s. 5. (2) Every prefabricated, hydraulic or engineered support system shall be constructed, installed, used and maintained in accordance with its design drawings and specifications. O. Reg. 213/91, s. 236 (2). (3) The design drawings and specifications for a prefabricated, hydraulic or an engineered support system, (a) shall indicate the size of the system and the type and grade of materials of which it is to be made; (b) shall indicate the maximum depth and the types of soil for which it is designed; (c) shall indicate the proper positioning of the system in the excavation, including the maximum allowable clearance between the walls of the support system and the walls of the excavation; and (d) shall indicate how to install and remove the system. (e)  Revoked:  O. Reg. 85/04, s. 21. O. Reg. 213/91, s. 236 (3); O. Reg. 85/04, s. 21. (4) In addition to the requirements of subsection (3), the design drawings and specifications for a hydraulic support system, (a) shall indicate the minimum working pressure required for the system; and (b) shall require the use of a device to ensure the protection of workers if a loss of hydraulic pressure occurs in the system. O. Reg. 213/91, s. 236 (4). (5) Before a variation from the design drawings and specifications for a prefabricated, hydraulic or an engineered support system is permitted, the variation shall be approved in writing by an engineer. O. Reg. 213/91, s. 236 (5); O. Reg. 375/22, s. 5. (6) If the soil conditions on a project differ from those assumed by the engineer in designing a prefabricated, hydraulic or an engineered support system, an engineer shall modify the design drawings and specifications for the actual soil conditions or shall approve the support system for use in the actual soil conditions. O. Reg. 213/91, s. 236 (6); O. Reg. 375/22, s. 5. (7) The constructor shall keep the design drawings and specifications for a prefabricated, hydraulic or an engineered support system at a project while the system is on the project. O. Reg. 213/91, s. 236 (7). (8) Revoked:  O. Reg. 443/09, s. 7.
237. (1) Subject to subsection (2), (a) no prefabricated or hydraulic support system shall be used in type 4 soil; (b) the space between the walls of a prefabricated support system and the walls of the excavation shall be restricted to the minimum clearance required for the forward progression of the support system; and (c) the walls of a hydraulic support system shall touch the walls of the excavation. O. Reg. 631/94, s. 8. (2) A prefabricated or hydraulic support system may be used for repairing underground pipe breaks if the system, (a) meets the requirements of section 236; (b) has four side walls; (c) is designed for a maximum depth of 3.6 metres; (d) is not used at a greater depth than 3.6 metres; (e) is designed to resist all hydrostatic and earth pressures found in type 3 and type 4 soils; (f) is installed so as to extend to the bottom of the excavation; (g) is installed so that the walls of the system touch the walls of the excavation; and (h) is not pulled forward after being installed in the excavation. O. Reg. 631/94, s. 8. (3) Before a support system is used as described in subsection (2), the constructor shall submit two copies of its design drawings and specifications to the office of the Ministry of Labour nearest to the project. O. Reg. 631/94, s. 8.
239. (1) A support system for the walls of an excavation shall be installed, (a) progressively in an excavation in Type 1, 2 or 3 soil; and (b) in advance of an excavation in Type 4 soil, if practicable. O. Reg. 213/91, s. 239 (1). (2) A support system for the walls of an excavation shall provide continuous support for it. O. Reg. 213/91, s. 239 (2). (3) No support system for the walls of an excavation shall be removed until immediately before the excavation is backfilled. O. Reg. 213/91, s. 239 (3). (4) A competent person shall supervise the removal of a support system for the walls of an excavation. O. Reg. 213/91, s. 239 (4).
240. If a support system is used for the walls of an excavation, a ladder for access to or egress from the excavation shall be placed within the area protected by the support system. O. Reg. 213/91, s. 240.
241. (1) A support system for the walls of an excavation shall extend at least 0.3 metres above the top of the excavation unless otherwise permitted or required by this section. O. Reg. 213/91, s. 241 (1). (2) If an excavation is located where there is vehicular or pedestrian traffic and if the excavation will be covered when work on or in it is not in progress, the support system for the walls of the excavation shall extend at least to the top of the excavation. O. Reg. 213/91, s. 241 (2). (3) If the upper portion of the walls of an excavation are sloped for the soil types as described in clauses 234 (2) (e), (f) and (g) and the lower portion of the walls are vertical or near vertical, the walls shall be supported by a support system which extends at least 0.5 metres above the vertical walls. O. Reg. 213/91, s. 241 (3).