create a safety audit for a site that is tunnels and shafts
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Published by SALUSTunnel and Shaft Construction Site Safety Audit ===============================================
Date: 2025-09-04
Inspector: \[INSPECTOR NAME]
Location/Area: \[LOCATION/AREA]
Department: \[DEPARTMENT]
Purpose
To ensure compliance with safety regulations, identify hazards, and verify the implementation of control measures on tunnel and shaft construction sites. This checklist is to be used by qualified safety personnel before the start of work, periodically during operations, and after completion of specific tasks or phases.
Instructions for Use
- 1\. Review all sections of the checklist to understand the requirements.
2\. Physically inspect the tunnel and shaft construction site, focusing on the items listed in each section. 3\. Verify compliance by observing conditions, interviewing workers, and reviewing documentation. 4\. Mark each item as 'Pass' or 'Fail' based on the verification criteria. 5\. For each 'Fail' item, document the corrective action required and the responsible party. 6\. Ensure all findings and corrective actions are documented in the audit report.
Frequency
This checklist should be completed: Weekly
Safety Checklist
General Site Conditions
Inspection of overall site conditions to ensure a safe working environment.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Site access and egress Check: Clear and unobstructed access and egress points are maintained. If failed: Remove obstructions and ensure clear pathways. | _________________ | ||
| Housekeeping Check: The site is free from excessive debris, waste materials, and slip/trip hazards. If failed: Implement a regular cleaning schedule and waste disposal system. | _________________ | ||
| Signage and barricades Check: Appropriate safety signs, warning signs, and barricades are in place and well-maintained. If failed: Replace or repair damaged signs and barricades. Install additional signage as needed. | _________________ | ||
| Ground Stability Check: The surrounding land space is sufficient to permit compliance with safety requirements. If failed: Ensure sufficient land space is available or modify the project plan. | _________________ |
Emergency Preparedness
Verification of emergency plans, equipment, and trained personnel.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Emergency procedures [9] Check: Written emergency procedures are established, posted, and communicated to all workers. If failed: Develop or update emergency procedures and ensure proper training. | _________________ | ||
| Rescue team [9] Check: A trained rescue team is available and equipped to perform rescues of underground workers. If failed: Provide rescue training and ensure availability of suitable rescue equipment. | _________________ | ||
| First aid [9] [9] [9] Check: First aid kits are readily available at the entrance to the shaft and underground, and a competent worker is available to administer first aid. If failed: Ensure first aid kits are stocked and accessible, and designate trained first aid personnel. | _________________ | ||
| Emergency lighting [3] [3] Check: An emergency lighting system is installed and functional in the tunnel and shaft. If failed: Install or repair the emergency lighting system and test regularly. | _________________ | ||
| Escape-only respirator [10] Check: Escape-only respirators are immediately available for each employee at work stations in underground areas where employees might be trapped by smoke or gas. If failed: Provide and maintain escape-only respirators and ensure employees are trained in their use. | _________________ |
Ground Support and Excavation
Inspection of ground support systems, excavation practices, and related safety measures.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Ground support system [2] [2] Check: The tunnel and shaft are supported by steel casing, concrete pipe, timber, or other material of required strength. If failed: Install or repair ground support systems as needed. | _________________ | ||
| Bracing [2] Check: Shafts more than 5 feet in depth are braced to support the surrounding earth. If failed: Install bracing to the full depth of the shaft. | _________________ | ||
| Ground inspections [2] Check: A qualified employee inspects the roof, face, and walls of portals, work areas, and haulage ways at the start of each shift and frequently thereafter. If failed: Conduct regular inspections and scale or support loose material. | _________________ | ||
| Scaling bar condition [2] Check: Scaling bars are in good condition (not blunted or severely worn). If failed: Replace worn or damaged scaling bars. | _________________ | ||
| Design Drawings [5] Check: Design drawings for the primary supports are available for inspection at the project. If failed: Ensure design drawings are available. | _________________ |
Air Quality and Ventilation
Assessment of air quality, ventilation systems, and monitoring practices.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Ventilation system [8] Check: A suitable ventilation system is provided to maintain safe air quality. If failed: Install or repair the ventilation system to ensure adequate air flow. | _________________ | ||
| Air quality monitoring [6] Check: Regular air quality tests are conducted and recorded to determine the concentration of hazardous gases. If failed: Implement or improve air monitoring procedures and maintain records. | _________________ | ||
| Flammable gas control [2] Check: Steps are taken to increase ventilation air volume or otherwise control gas concentration when 5% or more of the lower explosive limit for methane or other flammable gases is detected. If failed: Increase ventilation and implement gas control measures. | _________________ | ||
| Air compressor inlet [5] Check: The air inlet to an air compressor is located in a position that fumes or noxious contaminants are not drawn in with the air to be compressed. If failed: Relocate the air inlet to a clean air source. | _________________ |
Fire Prevention and Protection
Verification of fire prevention measures, firefighting equipment, and emergency procedures.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Fire extinguishers [1] Check: Approved fire extinguishers are provided at designated locations (e.g., drive pulley of underground conveyor, tunneling machine). If failed: Provide and maintain fire extinguishers in accessible locations. | _________________ | ||
| Smoking and open flames [1] Check: Smoking and open flames are prohibited in the tunnel and shaft. If failed: Enforce the no-smoking and no-open-flames policy. | _________________ | ||
| Flammable materials storage [2] Check: Flammable materials are stored at a safe distance from tunnel or shaft openings or protected by a fire-resistant barrier. If failed: Relocate flammable materials or install a fire-resistant barrier. | _________________ | ||
| Fire alarm notices [4] Check: Notices describing how to sound a fire alarm are posted in conspicuous places. If failed: Post fire alarm notices in visible locations. | _________________ | ||
| Means of extinguishing fire [4] Check: A means of extinguishing fire is provided at the top and bottom of every shaft. If failed: Provide and maintain fire extinguishing equipment at the top and bottom of every shaft. | _________________ |
Electrical Safety
Inspection of electrical systems, grounding, and related safety measures.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Ground-fault circuit interrupters (GFCIs) [13] Check: All electrical power circuits that supply portable or hand-held tools, lights, or equipment are protected by approved ground-fault interrupters. If failed: Install GFCIs on all applicable circuits. | _________________ | ||
| Electrical equipment and wiring [13] Check: Electrical equipment and wiring are installed and maintained according to regulations. If failed: Repair or replace faulty electrical equipment and wiring. | _________________ | ||
| Lighting circuits [13] Check: Lighting circuits are located so that the movement of personnel or equipment will not damage the circuits or disrupt service. If failed: Relocate or protect lighting circuits. | _________________ | ||
| Supplemental lighting [1] Check: The regular system of illumination is supplemented by lighting that can be activated upon the failure of the regular system. If failed: Provide supplemental lighting such as flashlights or lanterns. | _________________ | ||
| Electrical pumps and tools [3] Check: All electrical pumps and electrical tools are either adequately grounded or double-insulated. If failed: Ensure proper grounding or double-insulation of electrical equipment. | _________________ |
Haulage and Equipment
Inspection of haulage equipment, locomotives, and related safety measures.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Haulage locomotive brakes [5] Check: Haulage locomotives have suitable brakes. If failed: Repair or replace locomotive brakes. | _________________ | ||
| Audible bell on locomotive [5] Check: Haulage locomotives have an audible bell. If failed: Install or repair the audible bell. | _________________ | ||
| Locomotive controls [5] Check: Haulage locomotives have controls that can be operated only by a worker at the driver's station. If failed: Repair or modify locomotive controls. | _________________ | ||
| Track condition [5] Check: Track for haulage equipment is securely fastened to the ties. If failed: Securely fasten track to ties. | _________________ | ||
| Clearance for vehicles and workers [11] Check: The tunnel has enough clear space for the passage of vehicles and the movement of workers. If failed: Clear obstructions to provide adequate space. | _________________ | ||
| Unattended equipment [5] Check: When a haulage locomotive, trackless haulage equipment or a hoist in a shaft or tunnel is left unattended, its controls are left in the neutral position and its brakes are set. If failed: Set brakes and leave controls in neutral when equipment is unattended. | _________________ |
Communication Systems
Verification of communication systems in the tunnel and shaft.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Communication system in tunnel [13] Check: In a tunnel that is more than 225 feet long, a communication system is provided at the working face, top of the shaft, bottom of the shaft, hoisting station (if provided), each 1,000 feet of tunnel, and the office (if provided). If failed: Install or repair the communication system. | _________________ | ||
| Hoist operator communication [13] Check: Hoist operators are provided with a closed-circuit voice communication system to each landing station. If failed: Install or repair the communication system. | _________________ | ||
| Emergency signal [3] Check: A notice is posted by each telephone indicating how to call every other telephone in the system, describing the emergency signal to be used, and stating that a worker who hears the emergency signal shall answer the telephone. If failed: Post the required notice by each telephone. | _________________ | ||
| Shaft communication [3] Check: During the construction of a shaft, an effective means of communicating between the lowest point of the shaft and the surface is provided. If failed: Provide an effective means of communication. | _________________ |
Explosives Safety
Inspection of blasting operations, storage, transport, and handling of explosives.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Vehicle for transporting explosives [5] Check: A vehicle or conveyance being used to transport explosives or blasting agents does not carry any other cargo or any person other than the vehicle operator. If failed: Ensure explosives are transported separately. | _________________ | ||
| Transport of detonators [5] Check: No detonator is transported in a vehicle or conveyance while it is carrying explosives or blasting agents. If failed: Transport detonators separately from explosives. | _________________ | ||
| Notification of hoist operator [12] Check: If explosives or blasting agents are to be transported in a shaft, the worker in charge of blasting operations notifies the hoist operator and shaft attendants before the explosives or blasting agents are put in the conveyance. If failed: Notify the hoist operator and shaft attendants. | _________________ | ||
| Flashlight for blasting operations [12] Check: A flashlight is provided to every worker who is engaged in blasting operations in a tunnel or is in an area from which the means of egress passes a place where blasting is to be done. If failed: Provide flashlights to workers involved in blasting. | _________________ |
Personal Protective Equipment (PPE)
Verification of required PPE usage and condition.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Safety toe rubber boots [13] Check: Employees working in a wet shaft, tunnel, or caisson wear safety toe rubber boots with flat gripper-type soles. If failed: Provide and enforce the use of safety toe rubber boots. | _________________ |
Other Requirements
General requirements that apply across all areas of the project.
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Advance notice of tunnel excavation [7] Check: Before the start of a pressurized tunnel being constructed, modified, or repaired, that is 24 inches or more in diameter, height, or width, and that will be occupied by an employee, a report is sent to the relevant authorities. If failed: Submit the required report to the relevant authorities. | _________________ | ||
| Check-in and check-out system [7] Check: Each operation has a check-in and check-out system that will provide positive identification of an employee by number or name and will identify the location of each employee who is underground. If failed: Implement a check-in and check-out system. | _________________ | ||
| Emergency Provisions [7] Check: The employer informs oncoming shifts of any hazardous occurrences or conditions that have affected or might affect employee safety, including liberation of gas, equipment failures, earth or rock slides, cave-ins, floodings, fires, or explosions. If failed: Ensure proper communication between shifts. | _________________ | ||
| Competent worker for first aid [9] Check: The supervisor in charge of a project appoints at least one competent worker to be available to give first aid at a shaft or tunnel. If failed: Appoint a competent worker for first aid. | _________________ | ||
| Sufficient Land Space [4] Check: A tunnel or shaft is commenced or started only where sufficient land space is available to permit compliance with safety requirements. If failed: Ensure sufficient land space is available or modify the project plan. | _________________ |
General Requirements
| Item | Pass | Fail | Comments |
|---|---|---|---|
| Safe access and egress [7] Check: A safe means of egress and access to all work areas is provided and maintained free of hazards. If failed: Clear obstructions and ensure safe access. | _________________ | ||
| Underground opening security [7] Check: When work is not being performed, access to an underground opening is covered, bulkheaded, fenced off, or restricted by gates or doors and appropriately posted. If failed: Secure the underground opening. | _________________ | ||
| Instructions in hazard avoidance [10] Check: All employees are instructed in the recognition and avoidance of hazards that are associated with underground construction activities. If failed: Provide training on hazard recognition and avoidance. | _________________ | ||
| Project safety rules [10] Check: The employer issues each employee a copy of the project's general safety rules before the employee commences work at the project. If failed: Issue safety rules to all employees. | _________________ | ||
| Designated qualified person [10] Check: Each employer designates a qualified person who is responsible for administering the safety program. If failed: Designate a qualified person. | _________________ | ||
| Competent worker for rescue [9] Check: Before a project begins, an employer shall establish in writing emergency procedures for the rescue of underground workers. If failed: Establish emergency procedures for rescue. | _________________ |
Failed Item Procedures
- 1\. Immediately notify the supervisor of any failed items.
2\. Implement corrective actions as soon as possible. 3\. Document the failed item, corrective action, and date of completion in the audit report. 4\. Retrain employees on the relevant safety procedures, if necessary. 5\. If the failed item poses an immediate danger, stop work until the issue is resolved.
Documentation Requirements
1\. Maintain a record of all safety audits, including the date, time, findings, and corrective actions. 2\. Keep records of air quality tests, inspections, and training programs. 3\. Retain design drawings for the primary supports. 4\. Store records of exposures to toxic substances in accordance with regulations.
Checklist Completion
Overall Status: ☐ Pass ☐ Fail ☐ Corrective Actions Required
Inspector Signature: Date:
Supervisor Review: Date:
Corrective Actions Completed By: Date:
References and Standards
- Construction Safety and Health Standards (MIOSHA)
- Construction Projects Regulation (O. Reg. 213/91\)
- Workplace Safety and Health Regulation (Man. Reg. 217/2006\)
- Safety Code for the Construction Industry (CQLR c. S-2\.1, r.4\)
This checklist must be retained for \[RETENTION PERIOD].
Safety powered by SALUS
Sources used for this answer
[1] Construction Projects Regulation (O. Reg. 213/91)
Page 83
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# LAND REQUIREMENTS (cont.) ## FIRE PROTECTION (cont.) (2) Material described in subsection (1) shall be promptly removed from underground. O. Reg. 213/91, S. 259 (2). ## FACILITIES FOR WORKERS 260. (1) A heated room shall be provided for the use of underground workers. O. Reg. 213/91, S. 260 (1). (2) The wet clothes of workers employed underground shall be dried using sanitary means in a change room on the project. O. Reg. 213/91, S. 260 (2). (3) A change room, (a) shall have an open floor area no smaller than the greater of, (i) ten square metres, and (ii) one square metre per worker on a shift; (b) shall be equipped with mechanical ventilation that provides no less than six air changes per hour; (c) shall have suitable drainage facilities; (d) shall be kept at a temperature of at least 27 degrees celsius; and (e) shall have, for every worker employed underground, a locker that locks. O. Reg. 213/91, S. 260 (3). (4) Every change room shall be scrubbed once every twenty-four hours. O. Reg. 213/91, S. 260 (4). (5) If workers are employed underground, a change room shall be provided with one shower and one washbasin for each group of ten or fewer workers. O. Reg. 213/91, S. 260 (5). (6) Showers and washbasins provided in a change room shall be supplied with hot and cold water, soap or hand cleaner and paper towels or individual hand towels. O. Reg. 213/91, S. 260 (6). ## FIRST AID 261. The supervisor in charge of a project shall appoint at least one competent worker to be available to give first aid at a shaft or tunnel. O. Reg. 213/91, S. 261. 262. (1) A first aid kit shall be kept in the immediate vicinity of the above-ground entrance to every shaft, tunnel, caisson or cofferdam. O. Reg. 213/91, S. 262 (1). (2) At least one first aid kit shall be kept underground in every shaft and tunnel. O. Reg. 213/91, S. 262 (2). 263. (1) At least one stretcher for each group of twenty-five or fewer workers who are underground shall be kept at ev…
[2] Workplace Safety and Health Regulation (Man. Reg. 217/2006)
Page 223
Open source documentSource excerpt
# SÉCURITÉ ET HYGIÈNE DU TRAVAIL W210 - R.M. 217/2006 # SHAFTS AND TUNNELS # PUITS ET TUNNELS Professional engineer to design support structure 26.33(1) An employer must ensure that, during the excavation of a shaft or a tunnel, the walls of the shaft or tunnel are retained by a support structure that is (a) designed and certified by a professional engineer as being of sufficient strength to prevent the walls from collapsing or caving in: and (b) constructed, installed, used, maintained and dismantled in accordance with the professional engineer's specifications. - 26.33(2) An employer must ensure that the professional engineer's design specifications are kept at the site of the excavation of the shaft or tunnel and are made readily accessible to a worker, on request. Work areas to be free of mud and debris 26.34 An employer must ensure that the following areas of a shaft or tunnel excavation are kept free of loose mud and other accumulations of debris: (a) the access landing; (b) the bottom of the shaft or tunnel excavation: (c) other similar work areas. ## Ventilation to be provided 26.35 An employer must provide a suitable ventilation system in a shaft or tunnel to ensure that (a) the ventilation rate is at least 0.25 m³ per second per square metre of face of the shaft or tunnel; and (b) the concentrations of toxic vapours, gases, aerosols, dusts or other hazardous substances are reduced to and remain at levels that will not be hazardous to the safety or health of a worker. Ouvrage de soutènement conçu par un ingénieur 26.33(1) L'employeur voit à ce que, pendant l'excavation d'un puits ou d'un tunnel. les parois soient retenues par un ouvrage de soutènement : a) conçu par un ingénieur qui certifie que l'ouvrage est suffisamment résistant pour empêcher les parois de s'affaisser: b) construit, installé, utilisé, entretenu et démonté conformément aux directives de l'ingénieur. 26.33(2) L'employeur veille à ce que le plan de l'ingénieur soit cons…
[3] Construction Projects Regulation (O. Reg. 213/91)
Page 90
Open source documentSource excerpt
# LAND REQUIREMENTS (cont.) ## HOISTWAYS (cont.) (2) A bucket or similar conveyance may be used to transport a worker in a shaft for the purpose of inspecting the hoistway if no other method of access to the parts of the hoistway is available. O. Reg. 213/91, S. 303 (2). (3) A bucket referred to in subsection (2), (a) shall be at least 1.2 metres deep; (b) shall have smoothly-contoured outer surfaces to prevent it from tipping or becoming snagged by an obstacle during hoisting or lowering; and (c) shall not be self-opening. O. Reg. 213/91, S. 303 (3). (4) If a pivoted bucket that is manually-dumped and is not self-guided is being used to transport a worker, the bucket, (a) shall be equipped with a lock to prevent tipping; and (b) shall be pivoted in such a way that it does not automatically invert when the lock is released. O. Reg. 213/91, S. 303 (4). (5) A bucket that is not controlled by a cross head running in vertical guides shall not be hoisted or lowered at a speed greater than 0.5 metres per second when it is transporting a worker. O. Reg. 213/91, S. 303 (5). 304. (1) A hinged door that opens upward shall be provided over the opening at the top of a shaft. O. Reg. 213/91, S. 304 (1). (2) The door shall be closed while a worker is entering or leaving a bucket over the opening at the top of the shaft. O. Reg. 213/91, S. 304 (2). 305. A skip shall not be used to transport a worker unless, (a) the worker is inspecting guiderails or shaft supports; and (b) the skip is protected by an overwind device to prevent the skip from being hoisted to the dump position. O. Reg. 213/91, S. 305. ## TUNNELS 306. (1) A tunnel shall have enough clear space for the passage of vehicles and the movement of workers. O. Reg. 213/91, S. 306 (1). (2) The diameter of a circular or elliptical tunnel and the width and height of a square or rectangular tunnel shall be at least 760 millimetres. O. Reg. 213/91, S. 306 (2). (3) A clear space of at least 450 millime…
[4] Construction Safety and Health Standards (MIOSHA)
Page 4
Open source documentSource excerpt
# CONSTRUCTION STANDARD (cont.) ## R 408.[redacted postal code]. Safety generally. (cont.) activity will not cause any environmental hazard or structural failure within the facilities. (8) All employees shall be instructed in the recognition and avoidance of hazards that are associated with all of the following underground construction activities: (a) Air monitoring. (b) Ventilation. (c) Illumination. (d) Communications. (e) Flood control. (f) Mechanical equipment. (g) Personal protective equipment. (h) Explosives. (i) Fire prevention and protection. (j) Emergency procedures, including evacuation plans and check-in and check-out systems. (9) The employer shall issue each employee a copy of the project's general safety rules before the employee commences work at the project. (10) Each employer shall designate a qualified person who is responsible for administering the safety program. A written record shall be maintained of the safety training program. (11) Before an employee enters a tunnel where the atmosphere may be hazardous due to a condition such as a deficiency of oxygen, or may be toxic in excess of the maximum allowable limits, the tunnel shall be tested and the results shall be recorded as prescribed in occupational health standard Part 665. Underground Construction, Caissons, Cofferdams, and Compressed Air, which is referenced in R 408.[redacted postal code]. The records shall be maintained at the jobsite. If the atmosphere is hazardous, either sufficient ventilation to eliminate the hazard shall be provided or respiratory equipment as prescribed by the Department of Licensing and Regulatory Affairs shall be worn. (12) If an atmosphere is found to be explosive, then sparks, flame, and other sources of ignition shall be prohibited and ventilation shall be provided until the hazard has been reduced and maintained at or below the maximum allowable limits as prescribed by the Department of Licensing and Regulatory Affairs. ## 408.[red…
[5] Construction Projects Regulation (O. Reg. 213/91)
Page 85
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# LAND REQUIREMENTS (cont.) ## COMMUNICATIONS (cont.) (4) A notice shall be posted by each telephone, (a) indicating how to call every other telephone in the system; (b) describing the emergency signal to be used; and (c) stating that a worker who hears the emergency signal shall answer the telephone. O. Reg. 213/91, S. 270 (4). (5) A telephone system shall be installed in such a way that a conversation can be carried on between any two telephones in the system. O. Reg. 213/91, S. 270 (5). (6) The voice communication circuits used in a telephone system shall be independent from the circuits used to signal from one telephone to another. O. Reg. 213/91, S. 270 (6). 271. During the construction of a shaft, an effective means of communicating between the lowest point of the shaft and the surface shall be provided. O. Reg. 213/91, S. 271. 272. A completed service shaft more than six metres deep shall have a means, other than a telephone, of exchanging distinct and definite signals between the top and bottom of the shaft. O. Reg. 213/91, S. 272. 273. (1) If a person is about to be conveyed by a hoist in a shaft, the pit bottom worker shall notify the hoist operator before the person enters the conveyance. O. Reg. 213/91, S. 273 (1). (2) A hoist operator shall acknowledge every signal received by repeating the signal. O. Reg. 213/91, S. 273 (2). (3) A signal to a hoist operator to move a conveyance shall be given only from the landing from which the conveyance is being moved. O. Reg. 213/91, S. 273 (3). (4) A signal set out in Column 1 of the Table shall be used to communicate the meaning set out opposite to it in Column 2 between a hoist operator, the top or bottom of a shaft and all landings in the shaft: TABLE <table><tr><th>Item</th><th>Column 1 Code of signals</th><th>Column 2 Meaning</th></tr><tr><td>1.</td><td>Where the conveyance is in motion - 1 signal</td><td>STOP</td></tr><tr><td>2.</td><td>Where the conveyance is stationary — 1 signal</td><t…
[6] Construction Safety and Health Standards (MIOSHA)
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# CONSTRUCTION STANDARD (cont.) ## R 408.[redacted postal code]. Fire prevention and protection. (cont.) (14) In an underground operation, local gas checks shall be made before and during a welding or cutting operation and during a drilling operation that would penetrate the tunnel. (15) Whenever 5% or more of the lower explosive limit for methane or other flammable gases is detected in any underground work area or in the air return, an employer shall take steps to increase ventilation air volume or otherwise control the gas concentration, unless the employer is operating in accordance with the potentially gassy or gassy operation requirements. Such additional ventilation controls may be discontinued when gas concentrations are reduced below 5% of the lower explosive limit, but shall be reinstituted whenever the 5% level is exceeded. (16) Whenever 10% or more of the lower explosive limit for methane or other flammable gases is detected in the vicinity of welding, cutting, or other hot work, such work shall be suspended until the concentration of such flammable gas is reduced to less than 10% of the lower explosive limit. (17) A fire watch shall be maintained around welding and cutting operations until all possibility of fire is eliminated. The fire watch shall be provided with a minimum of 1 approved 2A-10BC fire extinguisher. (18) Flammable materials or supplies, other than those used during 1 shift, shall not be stored within 100 feet (30.48 meters) of any tunnel or shaft opening. If this is not feasible because of space limitations on the jobsite, then such materials may be located within the 100 foot limit, if both of the following provisions are complied with: (a) The materials are located as far as practicable from the opening. (b) A fire resistant barrier of not less than a 1-hour rating is placed between the stored material and the opening or additional precautions are taken that will protect the materials from ignition sources. ## TUNNELS AND SHAFT…
[7] Construction Safety and Health Standards (MIOSHA)
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# CONSTRUCTION STANDARD (cont.) ## R 408.[redacted postal code]. Electrical requirements. (cont.) prescribed in Construction Safety Standard Part 17 "Electrical Installations," as referenced in R 408.[redacted postal code]. (5) The regular system of illumination shall be supplemented by lighting that can be activated upon the failure of the regular system. Supplemental lighting, such as approved flashlights or lanterns, shall be sufficient to allow all employees to evacuate the tunnel. (6) Electrical installation in underground areas where oil, grease, or diesel fuel are stored shall be used only for lighting fixtures. (7) Lighting fixtures in storage areas, or within 25 feet (7.62 meters) of underground areas where oil, grease, or diesel fuel are stored, shall be approved for class I, division 2 locations, as prescribed in Construction Safety Standard Part 17 "Electrical Installations," as referenced in R 408.[redacted postal code]. ## R 408.[redacted postal code]. Fire prevention and protection. - Rule 1467. (1) The applicable requirements for fire prevention and protection as prescribed in Construction Safety Standard Part 18. "Fire Prevention and Protection," as referenced in R 408.[redacted postal code], shall be complied with in all tunnel and shaft operations. (2) Smoking and open flames are prohibited. An employer is responsible for collecting all personal sources of ignition, such as matches and lighters, from all persons. Welding and cutting, where required, shall comply with the provisions of subrules (9) to (14) of this rule. A fire watch shall be maintained when hot work is performed. (3) Not more than a 1-day supply of diesel fuel shall be stored in a tunnel or shaft. Gasoline or liquefied petroleum gas shall not be taken in a tunnel or shaft. Acetylene or methylacetylene propadiene stabilized gas may be used underground solely for welding, cutting, and other hot work and only as prescribed in Construction Safety Standard Part 7. "Welding and …
[8] Construction Safety and Health Standards (MIOSHA)
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# CONSTRUCTION STANDARD (cont.) ## 408.[redacted postal code]. Emergency provisions; plans; equipment; rescue crews. (cont.) (h) One first aid kit as prescribed in Construction Safety Standard Part 1 "General Rules," as referenced in R 408.[redacted postal code]. (11) At least 1 employee shall be on duty above ground when an employee is working underground. The primary duty of the employee who is above ground shall be to secure immediate aid for an employee who is underground in case of an emergency. ## R 408.[redacted postal code]. Communication system; location; signals Rule 1464. (1) In a tunnel that is more than 225 feet long, the employer shall provide a communication system at all of the following locations: (a) The working face. (b) The top of the shaft. (c) The bottom of the shaft. (d) The hoisting station, if provided. (e) Each 1,000 feet of tunnel. (f) The office, if provided. A public telephone or other communication system shall be provided or available to each tunnel project to secure outside emergency help. (g) Hoist operators shall be provided with a closed-circuit voice communication system to each landing station. The system shall have speaker microphones located so that the operator can communicate with individual landing stations during hoist use. (2) An employer shall establish and maintain direct communications for coordination of activities with other employers whose operations at the jobsite affect or may affect the safety of employees who are underground. (3) If a tunnel is pressurized, then an employer shall provide all of the following additional locations with a communication system: (a) The working chamber side of the manlock near the door. (b) The interior of all locks. (c) The lock attendant's station. (d) The compressor plant. (e) The first aid station. (4) Communication systems shall be tested upon initial entry of each shift to the underground, and as often as necessary thereafter, to ensure that they are…
[9] Construction Projects Regulation (O. Reg. 213/91)
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# LAND REQUIREMENTS 244. A tunnel or shaft shall be commenced or started only where sufficient land space is available to permit compliance with Parts IV and V.O. Reg. 213/91, S. 244. ## NOTICE 245. (1) An employer who will be constructing a tunnel, shaft, caisson or cofferdam shall file a notice with a Director before beginning work on a tunnel, shaft, caisson or cofferdam. O. Reg. 213/91, S. 245 (1); O. Reg. 145/00, S. 33 (1). (2) The notice shall, (a) describe the work; (b) provide specifications and drawings showing profiles, transverse sections and plans for the tunnel, shaft, caisson or cofferdam signed and sealed by the engineer who designed the support system for the tunnel, shaft, caisson or cofferdam; (c) provide complete details of all temporary and permanent ground support; (d) state the name, mailing address, address for service and telephone number of the constructor, of the owner and of the employer in charge of the work; (e) state the name of the supervisor in charge of the work and the supervisor's mailing address, address for service and telephone number; (f) provide the municipal address of the work or include a description of its location relative to the nearest highway such that the Director is able to locate the work; (g) state the starting date and the anticipated duration of the work; (h) state the estimated total cost for labour and materials for the work; and (i) list all designated substances that may be used, handled or disturbed by the work. O. Reg. 213/91, S. 245 (2); O. Reg. 145/00, S. 33 (2); O. Reg. 375/22, S. 5. ## WORKING ALONE AND ENTRY 246. Work shall not be performed in a shaft, tunnel, caisson or cofferdam unless another worker is working above ground in close proximity to the shaft, tunnel, caisson or cofferdam or to the means of access to it. O. Reg. 213/91, S. 246. 247. (1) No worker shall enter a well or augered caisson where the excavation is deeper than 1.2 metres unless, (a) a steel liner of adequate cap…
[10] Workplace Safety and Health Regulation (Man. Reg. 217/2006)
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Open source documentSource excerpt
# SÉCURITÉ ET HYGIÈNE DU TRAVAIL W210 R.M. 217/2006 (c) tests are conducted continuously and recorded at least once during each shift to determine the concentration of hazardous gases in the work area: and (d) an appropriate fire extinguisher is kept near the internal combustion engine. ## Haulage locomotives 26.40(1) An employer must ensure that if a haulage locomotive is used in a tunnel it is equipped with the following: (a) a properly maintained braking system; (b) interlock power controls that are operational from the driver's station only: (c) an appropriate fire extinguisher. - 26.40(2) An employer must ensure that track for haulage equipment is (a) constructed in a straight manner and at a uniform height to the established grade; and (b) securely attached to the foundation ties. ## Fire protection 26.41 An employer must ensure that there is an effective means for extinguishing a fire in a shaft or tunnel. ## Removal of scrap materials 26.42 An employer must ensure that scrap materials are removed at least daily from, and not allowed to accumulate in, a shaft or tunnel. ## Communication system 26.43(1) An employer must ensure that a shaft hoist has a communication system available and working at all times between the hoist operator and workers at landings in the shaft leading to a tunnel or an underground space. c) des analyses sont effectuées continuellement et les résultats sont consignés au moins une fois par quart de travail pour qu'il soit possible de déterminer la concentration de gaz nocif dans l'aire de travail: d) un extincteur approprié est placé à proximité du moteur. ## Locomotives de roulage 26.40(1) L'employeur fait en sorte que, si une locomotive de roulage est utilisée dans un tunnel. elle soit munie de ce qui suit : a) un système de freinage bien entretenu; b) des commandes de verrouillage qui ne peuvent être actionnées qu'au poste du conducteur; c) un extincteur convenable. - 26.40(2) L'employeur prend les me…
[11] Construction Projects Regulation (O. Reg. 213/91)
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Open source documentSource excerpt
# LAND REQUIREMENTS (cont.) ## TUNNELS (cont.) (a) shall be designed by an engineer in accordance with good engineering practice to withstand all loads likely to be applied to them; and (b) shall be constructed in accordance with the design. O. Reg. 213/91, S. 307 (6); O. Reg. 375/22, S. 5. (7) The constructor shall keep available for inspection at a project the design drawings for the primary supports. O. Reg. 213/91, S. 307 (7); O. Reg. 85/04, S. 23. 308. A tunnel shall be kept reasonably free of water when a worker is required to be in the tunnel. O. Reg. 213/91, S. 308. ## TUNNEL EQUIPMENT 309. When a haulage locomotive, trackless haulage equipment or a hoist in a shaft or tunnel is left unattended, (a) its controls shall be left in the neutral position; and (b) its brakes shall be set or other measures, such as blocking, shall be taken to prevent its moving. O. Reg. 213/91, S. 309. a 310. (1) A haulage locomotive shall have suitable brakes, an audible bell and controls that can be operated only by worker at the driver's station. O. Reg. 213/91, S. 310 (1). (2) A haulage locomotive shall be designed so that power for its driving mechanism is cut off unless the control regulating the power is continuously operated by a worker at the driver's station. O. Reg. 213/91, S. 310 (2). (3) The driver of a haulage locomotive shall sound the bell when the locomotive is set in motion or is approaching someone. O. Reg. 213/91, S. 310 (3). (4) No person other than the driver shall ride on a haulage locomotive. O. Reg. 213/91, S. 310 (4). 311. No worker shall ride on a haulage train except in a car provided to carry passengers. O. Reg. 213/91, S. 311. 312. A haulage car shall have a device to prevent uncontrolled travel by the car. O. Reg. 213/91, S. 312. 313. (1) Track for haulage equipment shall be securely fastened to the ties on which it is laid. O. Reg. 213/91, S. 313 (1). (2) If the ties interfere with the use of the bottom of the tunnel as a walk…
[12] Construction Safety and Health Standards (MIOSHA)
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Open source documentSource excerpt
# CONSTRUCTION STANDARD (cont.) ## R 408.[redacted postal code]. Definitions; A to H. (cont.) (11) "Escape-only respirator" means a respirator intended to be used only for emergency exit. (12) "High air" means air pressure used to supply power to pneumatic tools and devices. ## R 408.[redacted postal code]. Definitions; M to W. Rule 1456. (1) "Man lock" means a chamber through which employees pass from 1 air pressure environment into another. (2) "Materials lock" means a chamber through which materials and equipment pass from 1 air pressure environment into another. (3) "Occupied tunnel" means any tunnel entered by 1 or more employees. (4) "Pressure" means a force acting on a unit area, usually shown as pounds per square inch (p.s.i.). (5) "Qualified person" means a person who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training, and experience, has successfully demonstrated the ability to solve or resolve problems relating to the subject matter, the work, or the project. (6) "Safety screen" means an airtight and watertight diaphragm placed vertically across the upper part of a compressed air tunnel between the face and bulkhead in order to restrain sudden flooding of the crown of the tunnel between the safety screen and the bulkhead, thus providing a means of refuge and exit from a flooding or flooded tunnel. (7) "Shaft" means a vertical or inclined opening excavated below ground level, that is for the purpose of tunnel operations. (8) "Tunnel" means a generally horizontal excavation or facility more than 14 inches in diameter, width, or height and more than 6 feet in length below ground or water. Facilities used for the acquisition of minerals, ores, and fossil fuels, which are commonly known as mines, are excluded from this definition. (9) "Working chamber" means the space or compartment under air pressure in which the work is being done. ## R 408.[redacted postal code]. Advance notice…
[13] Construction Projects Regulation (O. Reg. 213/91)
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Open source documentSource excerpt
# LAND REQUIREMENTS (cont.) ## EXPLOSIVES (cont.) (b) shall be conspicuously marked by signs or red flags that are easily visible from the front and the rear; (c) shall not travel at a speed greater than six kilometres per hour; and (d) shall not be left unattended. O. Reg. 213/91, S. 319 (1). (2) Explosives and blasting agents referred to in subsection (1), (a) shall be in a box made of wood or be separated from every metal part of the vehicle or conveyance in which they are being transported by a lining made of wood; and (b) shall be arranged or secured so as to prevent any part of an explosive or blasting agent from being dislodged. O. Reg. 213/91, S. 319 (2). 320. If explosives or blasting agents are to be transported in a shaft, the worker in charge of blasting operations shall notify the hoist operator and shaft attendants before the explosives or blasting agents are put in the conveyance. O. Reg. 213/91, S. 320. 321. A flashlight shall be provided to every worker who is engaged in blasting operations in a tunnel or is in an area from which the means of egress passes a place where blasting is to be done. O. Reg. 213/91, S. 321. 322. - Drilling or charging operations in a shaft or tunnel shall not be done simultaneously, (a) above or below one another on the same face; or (b) 7.5 metres or less, measured horizontally, from one another. O. Reg. 213/91, S. 322; O. Reg. 142/17, S. 36. 323. (1) Explosives and blasting agents shall be fired electrically. O. Reg. 213/91, S. 323 (1). (2) Despite subsection (1), tape fuse may be used to fire explosives and blasting agents if block holing is to be done. O. Reg. 213/91, S. 323 (2). 324. (1) If a portable direct current battery or a blasting machine is the source of current for blasting, the firing cables or wires, (a) shall not be connected to the source of current until immediately before the charges are fired; and (b) shall be disconnected immediately after the charges are fired. O. Reg. 21…
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