Mechanical Contractor Safety Manual

Mechanical Contractor Safety Programs

The safety programs needed by a mechanical contractor depend on the work performed and the environments where employees work. A comprehensive manual may include programs covering:

• Lockout/Tagout
• Welding, Cutting and Hot Work
• Crane and Rigging Safety
• Personal Protective Equipment
• Fall Protection
• Aerial Lift Safety
• Ladder and Stairway Safety
• Confined Space Entry
• Electrical Safety
• Hand and Power Tool Safety
• Compressed Gas Cylinder Safety
• Hazard Communication
• Respiratory Protection
• Hearing Conservation
• Forklift and Powered Industrial Truck Safety
• Excavation and Trenching Safety
• Job Safety Analysis
• Emergency Action Plan
• Fire Prevention
• First Aid

Programs that do not apply to the company’s operations can be removed, while additional programs should be included when specialized mechanical systems, equipment, or customer facilities create additional hazards.

Mechanical Contractor Safety

Mechanical contracting combines construction, installation, fabrication, maintenance, and service work.

Employees may perform work involving:

• HVAC systems
• Boilers
• Chillers
• Pumps
• Compressors
• Process piping
• Utility piping
• Mechanical rooms
• Ductwork
• Machinery
• Pressure systems
• Equipment installation
• Equipment replacement
• Preventive maintenance
• Shutdowns and turnarounds

Each project should be evaluated for the hazards associated with the work and the facility where it will be performed.

Pre-Job Planning

Mechanical work should be evaluated before employees begin.

Pre-job planning may include:

• Defining the work scope
• Reviewing drawings and specifications
• Identifying equipment
• Identifying energy sources
• Evaluating access
• Identifying required permits
• Evaluating lifting requirements
• Identifying chemical hazards
• Reviewing customer requirements
• Coordinating shutdowns
• Establishing emergency procedures
• Determining required PPE

Planning should be updated when conditions or the work scope changes.

Job Safety Analysis

A Job Safety Analysis (JSA) can help identify hazards before mechanical work begins.

JSAs may be appropriate for:

• Equipment installation
• Machinery setting
• Pipe installation
• Pipe fabrication
• Welding and cutting
• Rigging
• Crane operations
• Equipment removal
• HVAC installation
• Boiler or chiller work
• Pump replacement
• Line breaking
• Pressure testing
• Confined-space entry
• Electrical work
• Lockout/tagout
• Elevated work
• Startup and commissioning
• Shutdown and turnaround work

The JSA should identify the steps of the task, associated hazards, and controls needed to perform the work safely.

Equipment Installation

Mechanical contractors frequently install pumps, motors, compressors, air-handling units, boilers, chillers, process equipment, tanks, machinery, and other large equipment.

Installation planning should consider:

• Equipment weight
• Dimensions
• Center of gravity
• Access
• Lifting points
• Rigging
• Crane or hoist capacity
• Equipment support
• Anchor points
• Employee positioning
• Electrical connections
• Piping connections
• Startup requirements

Employees should not place themselves beneath suspended equipment or between moving equipment and fixed objects.

Machinery Setting

Machinery setting can involve extremely heavy and irregular loads.

Planning should address:

• Equipment weight
• Center of gravity
• Rigging
• Cranes
• Forklifts
• Gantries
• Rollers
• Jacks
• Hoists
• Floor capacity
• Travel path
• Final positioning

Employees should maintain escape routes and avoid placing hands or other body parts beneath unsupported machinery.

Crane and Rigging Safety

Mechanical contractors frequently use cranes and rigging to install and remove equipment, piping, ductwork, structural supports, and machinery.

Lift planning should address:

• Load weight
• Load dimensions
• Center of gravity
• Crane capacity
• Rigging
• Sling angles
• Load path
• Landing area
• Ground conditions
• Power lines
• Employee positioning
• Communication

Employees should remain clear of suspended loads.

Rigging

Employees performing rigging work should understand the rigging equipment and load being handled.

Rigging equipment may include:

• Wire-rope slings
• Synthetic slings
• Chain slings
• Shackles
• Hooks
• Hoist rings
• Lifting beams
• Spreader beams
• Chain falls
• Lever hoists

Rigging should be inspected as required and selected for the intended load and configuration.

Damaged rigging should be removed from service.

Chain Falls and Come-Alongs

Manual hoists and lever hoists are commonly used to position mechanical equipment and piping.

Before use:

• Inspect the hoist.
• Verify rated capacity.
• Inspect hooks and chains.
• Verify the supporting structure.
• Evaluate the load path.
• Maintain appropriate employee positioning.

Employees should not extend handles, overload equipment, or use improvised methods to increase hoisting capacity.

Equipment Support and Blocking

Equipment should be securely supported before employees work beneath or around components that could move.

Supports may include:

• Blocking
• Cribbing
• Stands
• Engineered supports
• Manufacturer-provided supports

Hydraulic jacks alone should not be relied upon to support equipment while employees work beneath it.

Pipe Installation

Mechanical contractors may install piping for:

• Water
• Steam
• Natural gas
• Refrigerants
• Compressed air
• Process chemicals
• Hydronic systems
• Industrial gases
• Other utilities

Pipe installation should address lifting, supports, welding, cutting, threading, pressure, chemicals, access, and employee positioning.

Piping should be adequately supported during installation.

Pipe Fabrication

Pipe fabrication may involve:

• Cutting
• Welding
• Grinding
• Threading
• Grooving
• Beveling
• Bending
• Fitting

Employees should use appropriate machine guards, tools, ventilation, and PPE.

Pipe should be secured against rolling or unexpected movement during fabrication.

Pipe Threading Machines

Employees operating pipe-threading equipment should understand the hazards associated with rotating machinery.

Employees should:

• Keep clothing away from rotating parts.
• Control long hair.
• Avoid loose jewelry.
• Secure material appropriately.
• Use manufacturer-provided controls.
• Maintain guards.
• Keep hands clear of rotating components.

Employees should not reach across rotating pipe.

Pipe Cutting

Pipe may be cut using saws, abrasive equipment, torches, or specialized cutting tools.

Employees should:

• Secure the material.
• Use appropriate guards.
• Select the correct tool.
• Wear eye and face protection.
• Control sparks.
• Maintain stable body positioning.

Hot-work controls should be established when the cutting method creates ignition hazards.

Welding and Cutting

Mechanical contractors frequently perform welding, brazing, soldering, torch cutting, and other hot work.

Hazards may include:

• Fire
• Burns
• Welding fumes
• Optical radiation
• Compressed gases
• Electrical shock
• Sparks
• Molten metal

Employees should receive appropriate training and use required PPE.

Hot Work

Before hot work begins:

• Inspect the area.
• Remove or protect combustible materials.
• Control flammable substances.
• Protect openings and penetrations.
• Provide fire-extinguishing equipment.
• Establish a fire watch when required.
• Evaluate ventilation.
• Review adjacent work areas.

Hot-work permits should be used when required by company, customer, facility, or applicable procedures.

Fire Watch

A fire watch should be provided when required by the hazards and applicable procedures.

Fire-watch personnel should:

• Understand the work.
• Know the location of fire-extinguishing equipment.
• Monitor for ignition.
• Know how to summon assistance.
• Remain available for the required period.

Areas on the opposite side of walls, floors, and other surfaces should be evaluated when heat or sparks could pass through or ignite concealed materials.

Welding Fumes

Welding and cutting can generate fumes and gases.

Exposure depends on:

• Base metal
• Coatings
• Welding consumables
• Process
• Ventilation
• Work location

Controls may include local exhaust ventilation, general ventilation, fume-extraction equipment, employee positioning, and respiratory protection when required.

Special consideration may be necessary when welding stainless steel, galvanized material, painted surfaces, or other coated metals.

Compressed Gas Cylinders

Mechanical contractors may use oxygen, acetylene, shielding gases, nitrogen, refrigerants, and other compressed gases.

Cylinders should be:

• Properly identified
• Secured
• Protected from damage
• Stored appropriately
• Transported using suitable equipment

Valve-protection caps should be installed when required.

Employees should not lift cylinders by their protective caps.

Oxygen and Fuel Gas Equipment

Torches, regulators, hoses, valves, and related equipment should be inspected before use.

Employees should:

• Use equipment intended for the gas.
• Keep oxygen equipment free of oil and grease.
• Protect hoses from damage.
• Close valves when required.
• Report leaks.
• Remove defective equipment from service.

Cylinders should be protected from heat, sparks, and physical damage.

Refrigerant Safety

HVAC and mechanical contractors may work with refrigerants that can create pressure, frostbite, chemical, and atmospheric hazards.

Employees should understand the properties of the refrigerants they handle.

Work procedures should address:

• Cylinder handling
• Recovery equipment
• Ventilation
• Leak detection
• PPE
• Pressure
• Storage
• Emergency response

Refrigerant releases in enclosed or poorly ventilated areas may create oxygen-deficiency or other atmospheric hazards.

Boilers and Hot-Water Systems

Boilers and associated systems can expose employees to:

• Steam
• Hot water
• Pressure
• Fuel
• Electrical energy
• Hot surfaces
• Chemicals

Before maintenance or repair, employees should establish appropriate isolation and verify pressure and temperature conditions.

Systems should be allowed to reach a safe condition before they are opened.

Chiller Safety

Chillers can contain electrical energy, refrigerants, pressure, rotating equipment, and other hazards.

Maintenance and installation procedures should address:

• Electrical isolation
• Refrigerant exposure
• Pressure
• Ventilation
• Mechanical components
• Confined or enclosed mechanical spaces
• Lifting

Employees should follow manufacturer instructions and applicable procedures.

Pump Safety

Pump installation and maintenance may expose employees to mechanical, electrical, pressure, chemical, and lifting hazards.

Before servicing a pump:

• Isolate electrical energy.
• Close required valves.
• Relieve pressure.
• Drain hazardous materials when necessary.
• Control temperature.
• Verify isolation.

Employees should anticipate trapped material or pressure.

Compressors

Compressors can expose employees to electrical, mechanical, pressure, noise, and stored-energy hazards.

Before maintenance:

• Shut down the equipment.
• Isolate energy.
• Relieve stored pressure.
• Control moving components.
• Verify isolation.

Pressure-relief devices and guards should not be defeated.

Pressure Systems

Mechanical contractors frequently install and service pressurized systems.

Systems may contain:

• Steam
• Water
• Refrigerant
• Compressed air
• Natural gas
• Industrial gases
• Process chemicals

Employees should verify that pressure has been relieved before opening equipment or piping when required.

A pressure gauge reading alone should not always be considered proof that all pressure has been eliminated.

Line Breaking

Opening piping or process systems can expose employees to unexpected releases of pressure, chemicals, gases, steam, refrigerants, or hot liquids.

Line-breaking procedures should address:

• Correct system identification
• Shutdown
• Isolation
• Lockout/tagout
• Pressure relief
• Drainage
• Purging or flushing
• Temperature
• PPE
• Employee positioning
• Spill containment

Employees should anticipate that residual material may remain after a system has been drained.

Opening Flanges and Fittings

Employees should position themselves to reduce exposure to unexpected releases when opening flanges, fittings, valves, caps, or plugs.

The system should be isolated and pressure relieved before opening when required.

Appropriate chemical, thermal, eye, face, and body protection should be used based on the material involved.

Pressure Testing

Mechanical contractors may perform hydrostatic or pneumatic testing of piping and equipment.

Pressure testing should be planned and controlled.

Planning should address:

• Test medium
• Test pressure
• Equipment ratings
• Fittings
• Temporary components
• Test boundaries
• Employee access
• Pressure relief
• Communication

Employees not necessary to the test should remain outside hazardous areas.

Pneumatic Testing

Compressed gas stores significant energy and can create serious hazards if piping, fittings, or components fail.

Pneumatic testing should receive additional planning appropriate to the energy involved.

Controls may include:

• Restricted access
• Barricades
• Remote pressurization
• Controlled pressure increases
• Inspection hold points
• Appropriate pressure-relief equipment

Employees should not stand in potential failure trajectories.

Hydrostatic Testing

Hydrostatic testing generally uses liquid to pressurize a system.

Planning should address:

• Equipment capacity
• Connections
• Air removal
• Test pressure
• Drainage
• Leaks
• Employee positioning

Pressure should be relieved before repairs or adjustments are made unless an appropriate procedure specifically permits otherwise.

Natural Gas and Fuel Systems

Mechanical contractors working on natural gas or fuel systems should establish controls appropriate to fire, explosion, pressure, and atmospheric hazards.

Procedures may include:

• Isolation
• Leak testing
• Ventilation
• Ignition-source control
• Gas monitoring
• Purging
• Emergency procedures

Employees should not introduce ignition sources until the system and area have been appropriately evaluated.

Lockout/Tagout

Mechanical installation, maintenance, and repair frequently require hazardous-energy control.

Energy sources may include:

• Electrical
• Mechanical
• Hydraulic
• Pneumatic
• Chemical
• Thermal
• Gravity
• Pressure

Authorized employees should follow applicable energy-control procedures before servicing equipment where unexpected startup or energy release could cause injury.

Stored Energy

Mechanical systems can retain energy after primary sources have been isolated.

Stored energy may include:

• Pressure
• Steam
• Hydraulic energy
• Pneumatic energy
• Springs
• Elevated equipment
• Rotating components
• Thermal energy

Stored energy should be relieved, restrained, blocked, dissipated, or otherwise rendered safe.

Electrical Safety

Mechanical contractors may work around motors, disconnects, control panels, temporary power, HVAC equipment, and electrically powered machinery.

Employees should:

• Inspect electrical equipment.
• Protect cords from damage.
• Keep electrical panels accessible.
• Report defective equipment.
• Maintain appropriate electrical clearances.

Only qualified employees should perform electrical work requiring specialized knowledge.

Electrical Troubleshooting

Some diagnostic work may require equipment to be energized.

Only qualified employees should perform electrical testing or troubleshooting where exposure to energized parts exists.

After diagnostic testing is complete, required energy-control procedures should be established before physical repair or servicing begins.

Temporary Electrical Power

Mechanical construction projects may use temporary electrical installations, extension cords, portable distribution equipment, and power tools.

Equipment should be:

• Appropriate for the environment
• Protected from damage
• Inspected
• Properly grounded or otherwise protected as required

Damaged cords and electrical equipment should be removed from service.

Confined Space Entry

Mechanical contractors may enter:

• Tanks
• Vessels
• Pits
• Vaults
• Boilers
• Ducts
• Process equipment
• Utility spaces

Confined spaces should be identified and evaluated before entry.

Permit-required confined-space procedures may include atmospheric testing, ventilation, isolation, attendants, entry supervisors, communication, rescue, and required PPE.

Mechanical Room Safety

Mechanical rooms may contain boilers, chillers, pumps, electrical equipment, refrigerants, gas systems, hot piping, and rotating machinery.

Employees should maintain:

• Safe access
• Adequate lighting
• Housekeeping
• Equipment clearances
• Emergency access

Mechanical rooms should not be used for uncontrolled storage that interferes with equipment or emergency systems.

HVAC Installation

HVAC work may involve:

• Rooftop equipment
• Ductwork
• Refrigerants
• Electrical systems
• Cranes
• Rigging
• Ladders
• Aerial lifts
• Sheet metal
• Hot work

Pre-job planning should address the combination of hazards associated with the installation.

Ductwork Installation

Ductwork can be large, awkward, sharp-edged, and difficult to control.

Employees should:

• Use appropriate gloves.
• Control sharp edges.
• Use mechanical lifting assistance when practical.
• Secure suspended sections.
• Maintain communication.
• Avoid working beneath unsupported ductwork.

Elevated duct installation should include appropriate access and fall protection.

Sheet Metal Handling

Sheet metal can cause severe cuts and handling injuries.

Employees should:

• Wear appropriate gloves.
• Control sharp edges.
• Use mechanical assistance for large sheets.
• Store materials securely.
• Avoid unstable leaning stacks.

Large sheets should be controlled carefully outdoors where wind can cause unexpected movement.

Fall Protection

Mechanical contractors frequently work on roofs, structural supports, equipment, platforms, mezzanines, and other elevated areas.

Fall hazards should be evaluated before work begins.

Protection may include:

• Guardrails
• Personal fall arrest systems
• Positioning systems
• Covers
• Work platforms
• Aerial lifts

Employees should receive required training before using fall-protection systems.

Rooftop Mechanical Work

Rooftop HVAC and mechanical work can expose employees to roof edges, skylights, openings, ladders, weather, and material-handling hazards.

Planning should address:

• Roof access
• Fall protection
• Skylights
• Roof openings
• Material lifting
• Crane operations
• Electrical hazards
• Weather

Employees should understand applicable roof boundaries and fall-protection requirements.

Aerial Lifts

Mechanical contractors may use boom lifts and scissor lifts for piping, ductwork, equipment, and overhead installations.

Only trained and authorized employees should operate aerial lifts.

Employees should:

• Inspect equipment.
• Evaluate the work area.
• Follow platform-capacity limits.
• Use required fall protection.
• Maintain electrical clearances.
• Follow manufacturer instructions.

Employees should not climb on guardrails to obtain additional reach.

Ladders

Ladders should be appropriate for the work and inspected before use.

Employees should:

• Maintain three points of contact.
• Use stable surfaces.
• Avoid overreaching.
• Keep ladders away from vehicle traffic.
• Use appropriate ladder types around electrical hazards.

Damaged ladders should be removed from service.

Scaffolding

Mechanical contractors may use scaffolding to install piping, ductwork, equipment, and supports.

Scaffolds should be erected, inspected, accessed, and used according to applicable requirements.

Employees should understand scaffold:

• Capacity
• Access
• Fall protection
• Falling-object protection
• Electrical hazards

Forklifts and Telehandlers

Forklifts and telehandlers may be used to move piping, equipment, ductwork, pallets, and construction materials.

Only trained and authorized employees should operate powered industrial trucks or other material-handling equipment as applicable.

Operators should:

• Inspect equipment.
• Observe capacity.
• Maintain visibility.
• Keep loads stable.
• Control speed.
• Remain alert to pedestrians.

Equipment should not be used beyond its design or manufacturer limitations.

Loading and Unloading

Mechanical equipment and materials may be delivered by trucks and trailers.

Loading and unloading should address:

• Vehicle positioning
• Load stability
• Rigging
• Forklift capacity
• Crane capacity
• Material restraints
• Employee positioning

Employees should anticipate that materials may shift when straps, chains, binders, or restraints are released.

Manual Material Handling

Employees may manually handle pipe, fittings, valves, tools, equipment, ductwork, and other heavy or awkward materials.

Employees should evaluate the load before lifting.

Mechanical assistance, carts, hoists, cranes, forklifts, or team lifting should be used when appropriate.

Employees should avoid placing hands beneath unsupported equipment or materials.

Hand and Power Tools

Mechanical contractors use drills, saws, grinders, impact tools, threading machines, torque tools, and numerous other portable tools.

Tools should be:

• Inspected
• Appropriate for the task
• Properly guarded
• Maintained
• Used according to manufacturer instructions

Damaged tools should be removed from service.

Grinding Safety

Grinding may expose employees to flying particles, sparks, wheel failures, noise, and rotating equipment.

Employees should:

• Inspect grinding wheels.
• Verify rated speed.
• Maintain guards.
• Wear appropriate eye and face protection.
• Control sparks.
• Secure workpieces.

Grinding should be evaluated as hot work when sparks can ignite combustible materials.

Personal Protective Equipment

PPE should be selected according to the hazards of the work.

Common mechanical-contractor PPE may include:

• Hard hats
• Safety glasses
• Goggles
• Face shields
• Work gloves
• Welding PPE
• Safety-toe footwear
• High-visibility apparel
• Hearing protection
• Respiratory protection
• Fall protection

Specialized chemical, electrical, thermal, or task-specific PPE may also be required.

Hazard Communication

Mechanical contractors may use or encounter:

• Refrigerants
• Welding consumables
• Solvents
• Adhesives
• Sealants
• Lubricants
• Fuels
• Cleaning chemicals
• Process chemicals

The Hazard Communication Program should address labels, Safety Data Sheets, employee training, chemical storage, and protective measures.

Employees should review hazards before using unfamiliar chemicals.

Respiratory Protection

Mechanical work may expose employees to:

• Welding fumes
• Grinding dust
• Insulation dust
• Chemical vapors
• Refrigerants
• Process contaminants
• Construction dust

Engineering and work-practice controls should be used as required.

When respirators are necessary, the company’s Respiratory Protection Program should address selection, medical evaluation, fit testing, training, inspection, cleaning, storage, and program evaluation.

Hearing Conservation

Mechanical work may involve grinders, impact tools, saws, machinery, compressed air, and other high-noise equipment.

Employee noise exposures should be evaluated.

When required, the company should implement a Hearing Conservation Program and provide appropriate hearing protection.

Excavation and Trenching

Mechanical contractors may perform excavation for underground piping, utilities, mechanical systems, or equipment.

Excavation procedures should address:

• Underground utilities
• Soil conditions
• Protective systems
• Competent-person inspections
• Access and egress
• Spoil placement
• Water
• Equipment near edges

Employees should not enter unprotected excavations where cave-in hazards exist.

Underground Utilities

Before excavation or penetration work begins, underground utilities should be identified as required.

Utilities may include:

• Electrical
• Natural gas
• Water
• Sewer
• Communications
• Process piping

Employees should follow appropriate procedures when approaching known utility locations.

Overhead Power Lines

Cranes, aerial lifts, forklifts, telehandlers, and other equipment can contact overhead electrical lines.

Power lines should be identified during pre-job planning.

Required clearances and protective measures should be established before work begins.

Employees should treat overhead lines as energized unless their status has been appropriately established.

Contractor and Host-Employer Coordination

Mechanical contractors frequently perform work in operating customer facilities.

Before work begins, relevant safety information should be exchanged and responsibilities coordinated.

Topics may include:

• Hazardous energy
• Process chemicals
• Confined spaces
• Hot work
• Electrical hazards
• Emergency procedures
• Traffic
• Restricted areas
• Simultaneous operations
• Facility-specific requirements

Employees should understand which company and facility procedures apply to their work.

Shutdowns and Turnarounds

Industrial mechanical contractors may perform concentrated maintenance, repair, and installation during facility shutdowns.

Planning should address:

• Work scopes
• Energy isolation
• Group lockout/tagout
• Line breaking
• Confined spaces
• Hot work
• Cranes and rigging
• Scaffolding
• Contractor coordination
• Material staging
• Shift changes
• Emergency procedures

Schedule pressure should not be allowed to bypass required safety procedures.

Simultaneous Operations

Mechanical work may occur while other construction, production, maintenance, or contractor activities continue nearby.

Potential conflicts may involve:

• Crane lifts
• Hot work
• Electrical shutdowns
• Work above other employees
• Chemical releases
• Equipment traffic
• Shared energy sources

Work should be coordinated so one operation does not create uncontrolled hazards for another.

Startup and Commissioning

Newly installed or modified mechanical equipment should be inspected before startup.

Commissioning may include:

• Guard verification
• Electrical checks
• Control-system testing
• Rotation checks
• Leak testing
• Pressure testing
• Safety-device testing
• Emergency-stop verification
• Employee training

Employees should understand that commissioning can involve temporary operating conditions and changing energy states.

Initial Equipment Startup

Before initial startup:

• Inspect the work area.
• Remove unnecessary tools and materials.
• Verify guards.
• Confirm piping and electrical connections.
• Verify employees are clear.
• Communicate the startup.
• Restore energy in a controlled manner.

Employees should anticipate possible leaks, vibration, unexpected rotation, pressure changes, or other abnormal conditions during initial operation.

Equipment Maintenance

Mechanical contractors performing maintenance should establish appropriate procedures for hazardous energy, access, pressure, temperature, chemicals, and moving equipment.

Only qualified and authorized employees should perform specialized maintenance.

Equipment should not be returned to normal service until required repairs, guards, and safety devices have been restored.

Fire Prevention

Mechanical work can create ignition sources through welding, cutting, grinding, electrical equipment, and fuel-gas systems.

Fire-prevention procedures should address:

• Hot work
• Combustible materials
• Flammable liquids
• Compressed gases
• Fire extinguishers
• Emergency exits

Employees should know how to report a fire and when evacuation is required.

Housekeeping

Mechanical projects can create pipe, fittings, scrap, welding leads, hoses, cords, packaging, and other materials.

Employees should maintain orderly work areas.

Aisles, exits, electrical equipment, emergency equipment, ladders, and work platforms should remain accessible.

Scrap and sharp materials should be removed regularly.

Heat and Cold Stress

Mechanical contractors may work outdoors, on rooftops, in mechanical rooms, near hot process equipment, or in refrigerated environments.

Procedures should address:

• Drinking water
• Rest
• Shade
• Acclimatization
• Appropriate clothing
• Warming or cooling opportunities
• Employee monitoring

Employees should recognize and report symptoms of heat- or cold-related illness.

Emergency Procedures

Mechanical contractors should plan for foreseeable emergencies, including:

• Fires
• Electrical incidents
• Chemical releases
• Refrigerant releases
• Pressure-system failures
• Confined-space emergencies
• Falls
• Dropped loads
• Equipment incidents
• Medical emergencies

Employees should know how to stop work, secure the area when possible, summon assistance, and communicate the location and nature of the emergency.

Mechanical Contractor Safety Training

Employees should receive training appropriate to their assigned work and exposures.

Training may include:

• Lockout/tagout
• Welding and hot work
• Crane and rigging safety
• Fall protection
• Aerial lifts
• Ladders
• Confined spaces
• Electrical safety
• Hand and power tools
• Compressed gases
• Hazard communication
• PPE
• Respiratory protection
• Pressure systems
• Emergency procedures

Training should be documented as applicable and updated when equipment, work methods, employee responsibilities, or hazards change.

Building a Mechanical Contractor Safety Manual

A Mechanical Contractor Safety Manual should be customized to the contractor’s actual work rather than relying solely on a generic construction or industrial safety manual.

A commercial HVAC contractor installing rooftop units, ductwork, and hydronic piping may require a different combination of programs than an industrial mechanical contractor installing process piping, pumps, pressure systems, boilers, machinery, and production equipment.

Contractors performing equipment setting and industrial shutdown work may require additional programs for cranes and rigging, lockout/tagout, line breaking, confined spaces, hot work, scaffolding, and contractor coordination.

The manual should reflect the company’s mechanical systems, equipment, tools, employees, projects, customer facilities, lifting operations, pressure systems, maintenance activities, and work environments.

The completed safety manual should provide practical procedures employees and supervisors can use while supporting OSHA compliance, employee training, pre-job planning, JSAs, equipment inspections, incident investigations, customer requirements, and the company’s overall safety-management system.