Safe Application of Protective Coatings
PROTECTIVE COATINGS · WORKPLACE SAFETY
Safety is a critical part of every industrial coatings project—from surface preparation and material handling to ventilation, access, application, cleanup, and waste disposal.
Coatings work can involve abrasive blasting, hazardous dust, solvents, combustible materials, elevated work, confined or enclosed spaces, pressurized equipment, and other jobsite hazards. Effective safety planning begins before work starts and should reflect the specific materials, equipment, work environment, and tasks involved.
SAFETY STARTS WITH THE HAZARD ASSESSMENT
There is no single PPE, ventilation, or work-practice rule for every coatings project.
Requirements should be determined from the hazards present, product safety information, exposure assessments, site procedures, equipment instructions, and applicable regulatory or contractual requirements.
AT A GLANCE
Key safety considerations in coatings work
- Surface preparation: abrasive, dust, noise, pressure, and debris hazards
- Existing coatings: potentially hazardous constituents requiring special controls
- Coating materials: flammability, chemical exposure, and compatibility hazards
- Ventilation: control of vapors, dust, fumes, and atmospheric conditions
- Equipment: safe condition of blasting, spray, access, rigging, and electrical equipment
- Training: qualified personnel who understand the work and site-specific hazards
Safety During Surface Preparation
Surface preparation can introduce hazards that may not be present during normal facility operation. Abrasive blasting, power-tool cleaning, waterjetting, and other preparation methods can generate dust, debris, noise, high-pressure energy, and airborne contaminants.
Equipment should be suitable for the task, maintained in safe working condition, and operated by trained personnel. Required protective measures should be based on the hazards associated with the preparation method and materials being removed.
PERSONAL PROTECTION
Match PPE to the hazard
Eye, face, hearing, respiratory, hand, foot, body, and head protection may all be required depending on the task and exposure conditions.
WORK AREA CONTROL
Control where debris can travel
Containment and work-zone controls can help keep abrasive, coating debris, dust, and overspray from affecting nearby workers, equipment, operations, or the environment.
IGNITION SOURCES
Surface-preparation equipment and work practices should be evaluated for their potential to create sparks, heat, static electricity, or other ignition sources where flammable or combustible materials may be present.
Older Coatings May Require Additional Controls
Existing coatings, insulation systems, mastics, or other materials may contain hazardous constituents. Lead-containing coatings are one example of a material that can require additional assessment, exposure control, containment, hygiene, and waste-management procedures when disturbed.
Before surface preparation begins, the existing system should be evaluated so the project team understands what materials may be disturbed and what controls are necessary for workers, surrounding operations, and the environment.
KNOW WHAT YOU ARE REMOVING
Do not assume an existing coating system is harmless because it is old or already cured.
Disturbing an existing material can generate hazardous dust or debris. Testing, industrial hygiene support, containment, exposure controls, and regulated waste handling may be necessary depending on the materials present.
Safety When Handling Coating Materials
Coatings, thinners, cleaners, solvents, and related products can present chemical, fire, and exposure hazards. Before materials arrive on the jobsite, personnel should understand how they must be stored, mixed, applied, handled, and disposed of.
The product label, Safety Data Sheet (SDS), technical data, equipment instructions, and project safety plan are important sources of information for determining appropriate controls.
BEFORE USING A COATING PRODUCT
- Review the product’s hazards and required controls.
- Identify potential ignition sources.
- Determine ventilation and atmospheric-monitoring needs.
- Select appropriate PPE and respiratory protection where required.
- Confirm storage, mixing, application, and cleanup procedures.
- Plan for spills, waste, and emergency response.
Control Fire and Explosion Hazards
Where flammable vapors or combustible materials may be present, ignition-source control is essential. Open flames, smoking, hot work, static discharge, electrical equipment, and tools should be evaluated against the hazards of the specific work environment.
Ventilation and Atmospheric Conditions
Ventilation may be necessary to control solvent vapors, dust, fumes, overspray, or other airborne contaminants during coatings work. This becomes especially important in tanks, vessels, enclosed areas, or spaces where contaminants can accumulate.
The required ventilation rate, equipment configuration, duration, and atmospheric monitoring should be determined from the actual materials and conditions rather than relying on a universal time or airflow rule.
AIR MOVEMENT MATTERS
Some vapors can accumulate in low points, remote sections, dead spaces, or areas with poor air circulation. Ventilation should therefore be designed around the geometry of the work area and the characteristics of the contaminants being controlled.
Respiratory Protection Is Not a Substitute for Planning
Where respiratory protection is required, the type of respirator should be selected for the identified hazard and used as part of an appropriate respiratory-protection program. Engineering controls such as containment and ventilation remain important parts of exposure management.
Safety in Equipment and Access
Coatings projects often rely on compressors, blasting equipment, spray pumps, hoses, electrical equipment, lighting, ventilation systems, scaffolds, lifts, platforms, fall-protection systems, and rigging. Each introduces hazards that should be addressed in the project safety plan.
BEFORE USE
- Inspect equipment condition
- Check hoses and connections
- Verify guards and controls
- Confirm proper setup
- Remove damaged equipment from service
DURING WORK
- Monitor changing conditions
- Maintain access and egress
- Keep work areas organized
- Protect nearby personnel
- Follow equipment limitations
ACCESS IS PART OF THE JOB
Safe coatings work depends on more than the coating application itself.
Scaffolding, lifts, platforms, ladders, rigging, fall protection, lighting, ventilation, and access routes all influence whether workers can perform the job safely.
Where to Find Safety Information
Safety planning should incorporate information from the facility, employer, contractor, material supplier, equipment manufacturer, project documents, and applicable regulatory requirements.
Personnel should understand the site’s safety procedures before beginning work, and specialists such as safety professionals, industrial hygienists, engineers, or other qualified personnel should be involved when the hazards or work scope require their expertise.
IMPORTANT SOURCES OF INFORMATION
- Site and employer safety procedures
- Project-specific safety plans
- Safety Data Sheets and product labels
- Manufacturer equipment instructions
- Exposure monitoring and industrial hygiene information
- Applicable regulations, standards, and contract requirements
- Qualified safety and technical personnel
Training and Competency Matter
Workers should be trained for the equipment, materials, and tasks they perform. Additional qualifications or operator training may also be required by the employer, owner, project, or applicable regulations.
Training should be accompanied by effective supervision, communication, planning, and the authority to stop work when conditions become unsafe.
BOTTOM LINE
Successful coatings work is not simply a matter of achieving the specified surface preparation and dry film thickness. The work must also be planned and performed in a way that protects the people doing it.
ORIGINAL SOURCE
This article is adapted from Corrosion Basics—An Introduction, Second Edition, Pierre R. Roberge, ed. (Houston, TX: NACE International, 2006), pp. 462–464.
The article was originally published in the August 2021 issue of Materials Performance. Reprinted with permission.
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