Create a safe work procedure for hauling dirt with rock trucks through and active construction site at an existing and active wastewater treatment plant, crossing over an active CP rail line, driving out to a large irrigation pond. Dirt will be dumped on top of the pond berm to topdress and increase the hieght of the berm. The berm is currently 60ft high, and dirt will be spread and placed with a bulldozer and roller-packer. The pond is rougly 1/3 full of water.
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Published by SALUSSafe Work Procedure: Hauling Dirt with Rock Trucks and Berm Topdressing
Document Number: [SWP-NUMBER] Revision Date: [DATE] Next Review Date: [NEXT REVIEW DATE] Department: [DEPARTMENT NAME]
1. Scope
This safe work procedure (SWP) outlines the steps and safety precautions for hauling dirt with rock trucks through an active construction site at an existing and active wastewater treatment plant, crossing over an active CP rail line, and driving out to a large irrigation pond. The dirt will be dumped on top of the pond berm to topdress and increase the height of the berm. The berm is currently 60ft high, and dirt will be spread and placed with a bulldozer and roller-packer. The pond is roughly 1/3 full of water.
This procedure applies to all workers involved in the hauling and placement of dirt, including truck drivers, equipment operators, signallers, and supervisors. It covers all activities from loading the dirt to final placement and compaction on the berm.
Related procedures include: Traffic Control Plan, Confined Space Entry Procedure (if applicable), Heavy Equipment Operation Procedures, and Emergency Response Plan.
2. Definitions
Berm: An engineered mound or barrier of soil or other material.
Haul Road: A temporary road constructed for the purpose of transporting materials [1].
Signaller: A worker designated to direct traffic or equipment movement [2].
Competent Person: A person who is adequately qualified, suitably trained, and with sufficient experience to safely perform the specific task [2].
3. Responsibilities
3.1 Supervisors
- Ensure that all workers are adequately trained and competent to perform their assigned tasks.
- Conduct pre-job briefings to review the SWP and identify potential hazards.
- Ensure that all equipment is in good working order and properly maintained [3].
- Monitor work activities to ensure compliance with this SWP and other relevant safety procedures.
- Take corrective action to address any unsafe conditions or practices.
3.2 Workers
- Follow all instructions and procedures outlined in this SWP.
- Participate in pre-job briefings and ask questions if unsure about any aspect of the work.
- Inspect equipment before use and report any defects to the supervisor.
- Use required personal protective equipment (PPE) at all times.
- Report any hazards, near misses, or incidents to the supervisor immediately.
3.3 Health and Safety Representative
- Assist in the development and review of this SWP.
- Conduct regular site inspections to identify potential hazards and ensure compliance with safety procedures.
- Investigate incidents and recommend corrective actions.
- Provide guidance and support to workers and supervisors on health and safety matters.
4. Potential Hazards and Risks
| Hazard | Risk | Control Measures |
|---|---|---|
| Vehicle collisions | Injury or death | Implement a traffic management plan, use signallers, maintain safe speeds, ensure good visibility [4]. |
| Equipment rollovers | Injury or death | Use equipment with rollover protective structures (ROPS), ensure operators are trained, avoid steep slopes [5]. |
| Falls from height | Injury or death | Use fall protection when working near the edge of the berm, install guardrails or barriers [1]. |
| Entrapment/crushing | Injury or death | Establish exclusion zones around operating equipment, use spotters, ensure clear communication [6]. |
| Unstable ground | Equipment tip-over, landslides | Inspect the berm for stability, avoid working on saturated soil, implement ground stabilization measures [2]. |
| Dust exposure | Respiratory irritation, long-term health effects | Use water suppression, provide respiratory protection, monitor air quality [1]. |
| Railway crossing incidents | Injury or death | Follow railway crossing procedures, use a signaller, ensure clear visibility, communicate with railway authorities [2]. |
| Drowning | Injury or death | Ensure equipment is a safe distance from the edge of the water, use spotters, have emergency rescue equipment available [7]. |
| Slips, trips, and falls | Injuries | Maintain good housekeeping, clear pathways, wear appropriate footwear [8]. |
| Underground Utilities | Electrocution, explosion, service disruption | Identify and locate all underground utilities before digging. Follow safe digging procedures [1]. |
5. Personal Protective Equipment (PPE)
Proper PPE must be worn at all times to minimize the risk of injury [8].
- High-visibility safety apparel: To ensure workers are visible to equipment operators and other vehicles [4].
- Hard hat: To protect against head injuries from falling objects [8].
- Safety glasses: To protect eyes from dust and debris [8].
- Steel-toed boots: To protect feet from crushing injuries [8].
- Gloves: To protect hands from abrasions and cuts [8].
- Respiratory protection (dust mask or respirator): To protect against dust inhalation, as needed [1].
- Hearing protection (earplugs or earmuffs): If noise levels exceed acceptable limits [7].
Inspect all PPE before use for damage or defects. Replace damaged PPE immediately. Clean and maintain PPE according to manufacturer's instructions.
6. Equipment and Tools
Only use equipment and tools that are in good working order and that workers are trained to use [3].
- Rock Trucks: For hauling dirt from the source to the berm [9].
- Bulldozer: For spreading and grading dirt on the berm [10].
- Roller-Packer: For compacting the dirt on the berm [10].
- Hand tools (shovels, rakes): For minor grading and cleanup [11].
- Communication devices (two-way radios): For coordinating activities and maintaining communication between workers [8].
Inspect all equipment daily before use. Check fluid levels, tires, brakes, and safety devices. Report any defects to the supervisor immediately. Do not operate defective equipment.
7. Pre-Job Requirements
7.1 Training and Competency
- All workers must be trained and competent in the safe operation of the equipment they will be using.
- Training must include: Equipment operation, traffic control procedures, fall protection, emergency response, and this SWP.
- Operators of heavy equipment must have valid certifications, as required.
7.2 Pre-Job Briefing
- Conduct a pre-job briefing at the start of each shift to review the SWP, identify potential hazards, and discuss control measures.
- The briefing must include: Weather conditions, equipment status, traffic patterns, communication protocols, and emergency procedures.
- Document the briefing and ensure all workers understand the plan.
7.3 Work Area Preparation
- Inspect the haul route for hazards such as potholes, debris, and overhead obstructions.
- Ensure that the railway crossing is clear and safe for crossing.
- Establish a traffic management plan with designated routes, speed limits, and signage [4].
- Delineate exclusion zones around operating equipment.
- Inspect the berm for stability and identify any areas of concern.
- Ensure adequate lighting is provided if work is performed at night or in low-light conditions.
8. Safe Work Procedure Steps
8.1 Loading Dirt
- Ensure the loading area is level and stable.
- Position the rock truck safely under the loading equipment.
- Follow the loader operator's instructions and maintain clear communication.
- Do not exceed the truck's load capacity.
- Secure the load if necessary to prevent spillage during transport.
Safety considerations: Maintain a safe distance from loading equipment, wear high-visibility apparel, and be aware of surroundings.
8.2 Hauling Dirt
- Follow the designated haul route and obey all traffic control signs and signals [1].
- Maintain a safe speed and be aware of other vehicles and workers on the site [4].
- Use two-way radios to communicate with other drivers and the signaller.
- Approach the railway crossing with caution and follow the railway's crossing procedures [2].
- Ensure the truck is in good working order, including brakes, lights, and tires.
Safety considerations: Be aware of blind spots, avoid distractions, and adjust speed for weather conditions.
8.3 Dumping Dirt on Berm
- Approach the berm slowly and cautiously.
- Follow the signaller's instructions for positioning the truck.
- Ensure the truck is stable before dumping the load.
- Dump the load in a controlled manner to avoid creating unstable conditions.
- Do not approach the edge of the berm too closely.
Safety considerations: Use a spotter if visibility is limited, be aware of the slope of the berm, and avoid dumping near the water's edge.
8.4 Spreading and Compacting Dirt
- The bulldozer operator will spread the dirt evenly over the berm.
- The roller-packer operator will compact the dirt to the required density.
- Maintain clear communication between the bulldozer and roller-packer operators.
- Avoid creating unstable conditions on the berm.
Safety considerations: Be aware of the equipment's blind spots, maintain a safe distance from the edge of the berm, and avoid operating equipment on steep slopes.
9. Precautions and Safety Measures
- Traffic Control: Implement a comprehensive traffic control plan to minimize the risk of collisions [4].
- Equipment Maintenance: Regularly inspect and maintain all equipment to ensure it is in safe working order [3].
- Fall Protection: Use fall protection equipment when working near the edge of the berm [1].
- Communication: Maintain clear communication between all workers using two-way radios or hand signals [8].
- Ground Stability: Regularly inspect the berm for signs of instability and take corrective action as needed [2].
- Railway Crossing Safety: Follow all railway crossing procedures and communicate with railway authorities as required [2].
- Weather Conditions: Monitor weather conditions and adjust work activities as needed to ensure safety [7].
- Emergency Preparedness: Have an emergency response plan in place and ensure all workers are familiar with it [8].
- Housekeeping: Maintain a clean and organized work area to minimize slip, trip, and fall hazards [8].
- Underground Utilities: Identify and locate all underground utilities before digging. Follow safe digging procedures [1].
10. Emergency Procedures
10.1 General Emergency Response
- In the event of an emergency, immediately stop work and assess the situation.
- Activate the emergency alarm and notify the supervisor.
- Evacuate the area if necessary and follow the designated evacuation route.
- Provide first aid to injured workers, if trained to do so.
- Contact emergency services (911) if needed.
10.2 Specific Emergency Scenarios
- Equipment Rollover: Stop work, assess injuries, stabilize the equipment, and contact emergency services if needed.
- Vehicle Collision: Stop work, assess injuries, secure the scene, and contact emergency services and the supervisor.
- Fall from Height: Stop work, assess injuries, provide first aid, and contact emergency services if needed.
- Railway Incident: Stop work, immediately notify the railway authorities, assess injuries, and contact emergency services if needed.
- Drowning: Immediately attempt rescue, if safe to do so. Call emergency services (911).
10.3 Emergency Contact Information
- Emergency Services: 911
- Supervisor: [PHONE NUMBER]
- Health and Safety Representative: [PHONE NUMBER]
- Project Manager: [PHONE NUMBER]
11. Incident Reporting and Investigation
All incidents, near misses, and hazards must be reported to the supervisor immediately.
An investigation will be conducted to determine the root cause of the incident and to implement corrective actions to prevent recurrence.
The incident report must include: Date, time, location, description of the incident, names of those involved, and any injuries or damage that occurred.
Approved by: [NAME AND POSITION] Date: [APPROVAL DATE]
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Sources used for this answer
[1] Occupational Health and Safety Code (Alberta Regulation 191/2021)
Page 269
Open source documentSource excerpt
# Division 1 General (cont.) ## Haul roads (cont.) Section 541 OCCUPATIONAL HEALTH AND SAFETY CODE Part 36 AR 191/2021 (b) any breaks in the berms of a surface haul road must not be greater than the width of the smallest powered mobile equipment or vehicle in use on that haul road. AR 191/2021 s539;242/2022 540 Repealed AR 242/2022 s75. ## Mine walls - 541(1) An employer must develop specifications and procedures, certified by a professional engineer, that include the measures to be taken to ensure the stability of mine walls. - 541(2) Despite subsection (1), an employer at a pit must develop and implement specifications and procedures, verified by a competent person, that include the measures to be taken to ensure the stability of the pit walls. - 541 (3) An employer must ensure that (a) undermining is not carried out in unconsolidated mine material and discards, (b) the working face is less than 1.5 metres above the maximum height that the excavation equipment can reach, (c) unconsolidated mine material lying within 2 metres of the crest of a working face is removed, (d) unconsolidated mine material lying more than 2 metres from the crest of a working face is stabilized SO that it does not create a hazard to workers, and (e) accumulation of loose rock or other mine material does not create a hazard to workers. AR 191/2021 s541;242/2022 ## Dumping block 542 An employer must ensure that if powered mobile equipment may go over a bank or enter a dump opening while it is discharging its load, the equipment is effectively stopped or controlled by (a) an anchored block, (b) a ridge of material acting as a backstop, or (c) a designated signaller with a stop signal. 543 Repealed AR 242/2022 s77. ## Reporting dangerous occurrences 544 The following are incidents for the purposes of section 33(3) of the Act: (a) an unexpected major ground fall or subsidence that endangers or may endanger workers, equipment or facilities; (b) an unplanned stopp…
[2] Occupational Health and Safety Code (Alberta Regulation 191/2021)
Page 165
Open source documentSource excerpt
# Part 19 Powered Mobile Equipment (cont.) ## Refuelling (cont.) Section 280 OCCUPATIONAL HEALTH AND SAFETY CODE Part 19 AR 191/2021 (a) it is safe to refuel while the engine is running, and (b) the safe work practices to be used during the refuelling. # All-Terrain Vehicles and Snow Vehicles ## Three-wheeled all-terrain vehicles 280 A person must not use a three-wheeled all-terrain vehicle at a work site. ## Operator's manual - 281 An employer must ensure that the operator's manual for an all-terrain vehicle or snow vehicle is kept in a secure place with the vehicle or at another location readily accessible to the operator. - Load and slope limitations - 282(1) The operator of an all-terrain vehicle or snow vehicle must ensure that, if it is used to move a load, the load conforms to the weight, height and other limits specified by the manufacturer of the all- terrain vehicle or snow vehicle. - 282(2) If the manufacturer has not set limits for operation of the all-terrain vehicle or snow vehicle on sloping ground, the employer must implement safe work procedures appropriate for the slopes on which the equipment is used. ## Forklift Trucks ## Load chart 283 An employer must ensure that a forklift truck has a durable and legible load rating chart that is readily available to the operator. ## Seat belt 284 If a forklift truck is equipped with a seat belt by the original equipment manufacturer or a seat belt is added to the equipment at some later date, an employer must ensure that the seat belt is present and in useable condition. ## Pile Driving Equipment and Practices ## Chocking 285 The operator of pile driving equipment must ensure that a pile hammer is securely chocked while suspended by the hammer line if the equipment is not operating. ## Pile hoisting 286(1) The operator of pile driving equipment must ensure that pilings are not hoisted in the leads if workers who are not directly involved in the pile hoisting are on the superstructur…
[3] MMH - Mechanical Aids for Transporting Materials - II
Page 3
Open source documentSource excerpt
# MMH - Mechanical Aids for Transporting Materials - II (cont.) ## What mechanical aids can be used? (cont.) Move and empty drums with tilting drum cradles and drum dollies. Handle sheet materials with an "A" frame hand truck or dolly. MMH - Mechanical Aids for Transporting Materials - II CCOHS
[4] Trenching and Excavation
Page 1
Open source documentSource excerpt
CCOHS CCHST Canadian Centre for Occupational Health and Safety Centre canadien d'hygiène et de sécurité au travail Health and Safety Programs # Trenching and Excavation ## On this page What is meant by a trench and an excavation? What are the hazards associated with trenching and excavation? What is meant by soil types? What should occur before beginning an excavation? What factors determine what is the appropriate protective system to use? What are the different types of protective systems used to protect against cave-ins? What should NOT be done during an excavation? What can be included in a trenching and excavation inspection checklist? ## What is meant by a trench and an excavation? Generally speaking, an excavation is a hole in the ground as the result of removing material. A trench is an excavation in which the depth exceeds (is bigger than) the width. ## What are the hazards associated with trenching and excavation? Working in trenches and excavations is hazardous to both the workers who work inside them, and to workers on the surface. The hazards include: - Cave-ins or collapses that can trap or crush workers. - Equipment or excavated soil falling on workers (e.g., equipment is operated or soil and debris is stored too close to the excavation). - Falling into the trench or excavation. - Flooding or water accumulation. - Exposure to a hazardous atmosphere (e.g., gas, vapour, dust, biological contaminants, or lack of oxygen). Trenching and Excavation CCOHS
[5] Occupational Health and Safety Code (Alberta Regulation 191/2021)
Page 473
Open source documentSource excerpt
# OCCUPATIONAL HEALTH AND SAFETY CODE Index walkways See entrances, walkways, and stairways walls masonry walls stabilization, 192 walls, mine specifications, procedures, and certifications, 541 warning devices and alarms in emergency response plans, 116(g) excavation markings, 444 falling objects, 318(3) flags excavation markings, 444 for warning of trees to be felled, 522(b) flares hazardous locations, safe distances, 167 public highway traffic control, 194(7)(e) flashing lights and beacons falling objects warnings, 318(3) public highway traffic control, 194(7)(d) mobile cranes warning devices, 91, 267 powered mobile equipment, 266(b), 267 public highway traffic control, 194(7)(a) starting machinery, alarm systems, 365 ventilation system failure, 388 warning signs automatic machinery starts, 310(6) falling objects, 318(3) hazardous locations, 165(4) materials chute at demolition site, 420(2) noise exposure limits exceeded, 221(h) open building shaft, 313(3) signs, 310(6) temporary covers for openings or holes, 314(3) tree felling near roads, 522 vehicle traffic control logging industry, 525 public highways, 194(7) See also safeguards and warnings wash basins See toilets and washing facilities washing and cleaning operations fire and explosion hazards, 162(5) washrooms See toilets and washing facilities waste defined asbestos waste, 1 discard, 1 hazardous waste, 394.1 spoil pile, 1 asbestos unnecessary accumulations, 28(b) waste containers, 38 clean work site, 185 feminine hygiene products disposal, 360(c) hazardous waste, 395(3)(c), 396 mine material and discards, 536, 541 sharps receptacles, 526 spoil pile, 452-453 waste receptacles for toilets and hand washing, 360 WHMIS not to apply to hazardous waste, 395(3)(c) water dangers defined life jackets, 1 personal flotation devices, 1 confined and restricted spaces, 49 duty to use PPE, 228 excavating and tunneling, 445, 464(2) fall protection systems, 157 life jackets, 157, 240-241 loading explosives, 492.1 mines,…
[6] Occupational Health and Safety Code (Alberta Regulation 191/2021)
Page 268
Open source documentSource excerpt
# Division 1 General (cont.) ## Reports (cont.) Section 535 OCCUPATIONAL HEALTH AND SAFETY CODE Part 36 AR 191/2021 534(2) An employer must ensure that a report made under subsection (1) is kept for at least 2 years from the date the report is made. AR 191/2021 s534;242/2022 ## Excavation 535 An employer must ensure that the walls of excavations are designed by a competent person and constructed and located to ensure safe distances are maintained from any (a) boundary of a mine or mine site, (b) right of way for a highway or thoroughfare, (c) oil or gas well, and (d) right of way for a pipeline or other utility. AR 191/2021 s535;242/2022 ## Mine material and discards 536 An employer must ensure that mine material and discards that are open to the atmosphere or accessible to workers are (a) stored in such a way that the mine material and discards do not create a hazard to workers, and (b) marked to identify any hazards to workers that may exist. - AR 191/2021 s536;242/2022 ## Dust from drilling 537 An employer must ensure that any dust released from drilling activities does not create a hazard to workers. 538 Repealed AR 242/2022 s73. - AR 191/2021 s537;242/2022 ## Haul roads - 539(1) An employer must ensure that a haul road is constructed and maintained SO that vehicles and equipment can travel safely into or out of a work area. - 539(2) An employer must ensure that a haul road with a gradient of more than 5 percent has emergency escape routes that (a) are spaced throughout the length of the haul road, and (b) allow a runaway vehicle or equipment to be stopped safely. - 539(3) An employer must ensure that (a) any portion of a haul road that exposes vehicles and equipment to a vertical fall of greater than 3 metres is protected by a berm that is equivalent to at least 1/2 the height of the largest tire of any equipment, powered mobile equipment or vehicle in use on that haul road, and 36-2
[7] MMH - Mechanical Aids for Transporting Materials - II
Page 1
Open source documentSource excerpt
CCOHS CCHST Canadian Centre for Occupational Health and Safety Centre canadien d'hygiène et de sécurité au travail # Manual Materials Handling (MMH) # MMH - Mechanical Aids for Transporting Materials - II On this page What mechanical aids can be used? ## What mechanical aids can be used? Specific tasks or objects require specialized equipment. For standard mechanical aids, see MMH - Mechanical Aids for Transporting Materials - I. - Select the right equipment to complete the task. Equipment is rated for different capacities, which determine the maximum weight the equipment can safely handle, and the conditions under which it can handle those weights. - Do not operate any equipment if you are not trained to use that equipment. - Keep the equipment in good and safe operating condition. It saves effort while transporting loads. - Visually inspect the equipment for any defects such as loose wheels or damaged platforms before use. - Be sure that the load is securely in place before moving. - Always push the equipment rather than pull it. - Select a stair climbing truck when moving a load on stairs. MMH - Mechanical Aids for Transporting Materials - II CCOHS
[8] Occupational Health and Safety Code (Alberta Regulation 191/2021)
Page 402
Open source documentSource excerpt
# OCCUPATIONAL HEALTH AND SAFETY CODE Index bootleg defined, 1 drilling operations, 486 See also explosives boots See footwear bore hole defined, 1 connecting downlines to trunklines, 497 detonating cords, 517.7 ignition precautions, 497.1 quantity of explosives, 477, 488.1 secondary blasting, 517.2 size of bore hole, 487 underground mines day boxes, 517.96 detonating in the same round, 517.993-517.994 explosive atmospheres, 517.99 secondary blasting, 517.9991 See also explosives bottles and boxes See containers bracing, 457-458 alternatives to temporary protective structures, 457 installation and removal, 458 lumber and plywood standards, Schedule 9 shoring component dimensions, Schedule 9 See also temporary protective structures; temporary supporting structures bracket scaffolds design and specifications, 332 See also scaffolds and temporary work platforms Braking Performance - Rubber-Tired, Self-Propelled Underground Mining Machines (CSA), 574 brand name in definition of product identifier, 394.1 See also Workplace Hazardous Materials Information System (WHMIS) breathing apparatus, self-contained See self- contained breathing apparatus breathing equipment See respiratory protective equipment bridges for crossing conveyor belts, 373(1)-(2) for logging industry vehicles, 525 overhead cranes, standards, 93-94 standards overhead cranes, 93-94 British Columbia Cave Rescue Companion Rescue Workshop, 841(c)(ii) broadcasting in definition of electromagnetic radiation, 1 See also radiofrequency transmitters brush cutting See tree care operations bucking and felling See forestry buffing disc See grinders buildings See asbestos; demolition building shaft hoists See tower and building shaft hoists building shafts defined, 1 demolitions, 422 safeguards under construction, warning signs, 313(3) main and secondary work platforms, 313(1) no platform at doorway, safety structures, 313(2) safeguards on cage of shaft hoists, 318(7)-(8) bulk fuel storage See fuel storage bulk shi…
[9] MMH - Mechanical Aids for Transporting Materials - II
Page 2
Open source documentSource excerpt
# MMH - Mechanical Aids for Transporting Materials - II (cont.) ## What mechanical aids can be used? (cont.) Choose a sturdy frame hand truck with larger wheels to move materials in rough terrain. An additional set of handles allows for assistance. Use a pump truck to move materials stored on pallets. Move and dump waste materials with dump trucks. MMH - Mechanical Aids for Transporting Materials - II CCOHS
[10] Occupational Health and Safety Code (Alberta Regulation 191/2021)
Page 472
Open source documentSource excerpt
# OCCUPATIONAL HEALTH AND SAFETY CODE Index <table><tr><th></th><th>vehicles</th><th>in confined spaces, 53</th></tr><tr><td></td><td>defined</td><td>design and specifications, 387</td></tr><tr><td></td><td>GVW, 1</td><td>flammable substances, precautions, 163(2)</td></tr><tr><td></td><td>machinery, includes vehicles, 1</td><td>maintenance and operation, 387(1)</td></tr><tr><td></td><td>vehicle, 1</td><td>in spray operations, 170.1(1), 170.1(4)</td></tr><tr><td></td><td>fall protection, 155</td><td>training, 388(2)</td></tr><tr><td></td><td>headwear, 236</td><td>warning of system failure, 388(1)</td></tr><tr><td></td><td>for moving workers, 364</td><td>when needed, 386</td></tr><tr><td></td><td>personal vehicles for work purposes, 290.1</td><td>airborne contaminants, 386(a)</td></tr><tr><td></td><td>refuelling, 279</td><td>atmosphere levels of oxygen, too high or too low,</td></tr><tr><td></td><td>See also powered mobile equipment; underground</td><td>386(e)</td></tr><tr><td></td><td>mines; welding or allied process</td><td>biological contaminants, 386(b)</td></tr><tr><td></td><td>vehicles, transportation of explosives and detonators</td><td>flammables, 386(d)</td></tr><tr><td></td><td>See explosives, transportation in vehicles</td><td>particulates, 386(c)</td></tr><tr><td></td><td>vehicle fuelling, retail</td><td>See also underground mines, ventilation systems</td></tr><tr><td></td><td>defined</td><td>vertical ladders on scaffolds, 327</td></tr><tr><td></td><td>retail fuelling outlet, 1</td><td>vertical towers</td></tr><tr><td></td><td>See also retail fuel and convenience store worker</td><td>on motor vehicle, standards, 347(5)</td></tr><tr><td></td><td>safety</td><td>See also elevating platforms and aerial devices</td></tr><tr><td></td><td>vehicle hoists, 112-113</td><td>vessels See confined and restricted spaces; hot taps</td></tr><tr><td></td><td>safe use, 113</td><td>vests</td></tr><tr><td></td><td>standards, 112</td><td>duty to use, 228</td></tr><tr><td></td…
[11] Trenching and Excavation
Page 3
Open source documentSource excerpt
# Trenching and Excavation (cont.) ## What should occur before beginning an excavation? (cont.) - Check areas near the site for potential hazards and sources that can impact the stability of the soil. Be aware that nearby vehicles and equipment can cause the soil to vibrate and then collapse. - Determine if nearby buildings or structures and their foundations may put pressure on the soil and affect the walls of the trench. - Test for hazardous gas, vapours, and dust before entering. Test for oxygen levels in the space before entering, and during the work as required. - Plan appropriate organization of the work site, and good housekeeping practices including moving debris and excavated soil far enough away from the excavation site. - Remove water from the excavation. - Protect workers from falling into the excavation. - Identify appropriate personal protective equipment including high visibility apparel for vehicular traffic and make sure every worker wears them as required. - Have a worker above ground when a worker is working in the trench to warn those in the trench of danger and to provide emergency help. - Determine if the trench is considered a confined space If so, do not allow workers to enter the trench until the requirements of the organization's confined space program are met, including entry permits and training. - Prepare work permits for work in confined spaces, as appropriate. - Have a means of exit provided from the inside of the trench, usually no more than 8m (25 ft) away from any worker in the trench. - Plan for adverse weather conditions (e.g. hot or cold environments, storms, etc.). - Prepare an emergency plan and rescue procedures. - Keep first aid equipment at the site. - Educate and train workers about all existing and potential hazards and risks and appropriate safety measures. ## What factors determine what is the appropriate protective system to use? In general, trenches that are 1.2 metres (4 feet) deep or great…
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