Safe Work Procedure: Silica Dust Control

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 necessary safety precautions and control measures to minimize silica dust exposure during tasks that involve materials containing crystalline silica. This procedure applies to all employees, contractors, and visitors who may be exposed to silica dust at [LOCATION_CONTEXT]. It covers tasks such as mixing, cutting, grinding, drilling, and demolition of concrete, mortar, drywall, and other silica-containing materials.

2. Definitions

Crystalline Silica: A basic component of soil, sand, granite, and many other minerals. Quartz is the most common form of crystalline silica [1].

Respirable Crystalline Silica: Very small particles of crystalline silica that can penetrate deep into the lungs when inhaled [2].

PEL (Permissible Exposure Limit): The maximum amount of a substance a worker can be exposed to, as set by OSHA [2].

3. Responsibilities

3.1 Supervisors

Ensure all workers are adequately trained on this SWP and the hazards of silica dust [1].
Provide the necessary PPE and ensure it is properly used and maintained [3].
Implement and maintain engineering controls to minimize dust exposure [4].
Monitor work activities to ensure compliance with this SWP [5].

3.2 Workers

Participate in required training and understand the hazards of silica dust [1].
Use all required PPE as instructed [3].
Follow the safe work practices outlined in this SWP [5].
Report any hazards or unsafe conditions to the supervisor [6].

3.3 Health and Safety Representative

Assist in the development and review of this SWP.
Conduct regular workplace inspections to monitor compliance.
Investigate incidents and recommend corrective actions.

4. Potential Hazards and Risks

Hazard	Risk	Control Measures
Inhalation of respirable crystalline silica	Silicosis, lung cancer, other respiratory diseases 7, 12	Use engineering controls (e.g., ventilation, wet methods), wear appropriate respiratory protection (e.g., NIOSH-approved respirators) 2, 6, 10
Eye contact with silica dust	Eye irritation, damage [7]	Wear safety glasses or goggles with side shields 6, 10, 15
Skin contact with silica dust	Skin irritation, dryness [7]	Wear gloves and protective clothing 3, 6, 10
Dust accumulation	Slip and fall hazard, reduced visibility	Implement good housekeeping practices to prevent dust buildup 4, 9, 13

5. Personal Protective Equipment (PPE)

Always use the appropriate PPE when working with silica-containing materials to minimize exposure [3].

Respirator: Use a NIOSH-approved respirator (e.g., N95, P100) appropriate for the dust levels present. Ensure proper fit testing and training are conducted 6, 10.
Eye Protection: Wear safety glasses or goggles with side shields to protect eyes from dust and debris 6, 10, 15.
Gloves: Wear waterproof gloves to prevent skin contact and irritation 3, 6, 10.
Protective Clothing: Wear long-sleeved shirts and pants to minimize skin exposure. Use disposable coveralls when dust exposure is high 3, 6, 10.
Hearing Protection: If the equipment used creates high noise levels, wear appropriate hearing protection.

Inspect PPE before each use for damage or defects. Replace damaged PPE immediately [5].

6. Equipment and Tools

Use the right equipment and tools for the job and ensure they are in good working condition.

Ventilation Systems: Use local exhaust ventilation to capture dust at the source [4].
Wet Cutting/Grinding Tools: Use tools equipped with water attachments to suppress dust [3].
HEPA Vacuum: Use a HEPA-filtered vacuum to clean up dust and debris 9, 19.
Power Tools: Ensure power tools are equipped with dust collection systems [3].
Hand Tools: Use hand tools when possible to minimize dust generation.

Inspect equipment and tools before each use. Maintain equipment according to the manufacturer's instructions [5].

7. Pre-Job Requirements

7.1 Training and Competency

Workers must complete training on silica hazards, control measures, and proper use of PPE. Training should cover this SWP, SDS information, and relevant regulations [1].

7.2 Pre-Job Briefing

Conduct a pre-job briefing to discuss the tasks, hazards, and control measures. Review this SWP and ensure all workers understand their roles and responsibilities [5].

7.3 Work Area Preparation

Establish a regulated work area with signage to limit access 4, 8.
Ensure adequate ventilation in the work area 2, 6, 14.
Wet down surfaces to minimize dust generation [3].
Remove unnecessary equipment and materials from the work area 4, 9, 13.

8. Safe Work Procedure Steps

8.1 Planning and Preparation

Review the task and identify potential silica exposure hazards [1].
Select appropriate tools and equipment with dust control features [3].
Ensure all workers are trained and equipped with the necessary PPE 6, 7.

Safety considerations: Proper planning is crucial to minimize silica exposure.

8.2 Dust Control Implementation

Use wet cutting or grinding methods whenever possible to suppress dust [3].
Utilize local exhaust ventilation to capture dust at the source [4].
When dry cutting or grinding is necessary, use tools with integrated dust collection systems [3].

Safety considerations: Ensure dust control measures are effective and properly maintained.

8.3 Clean-Up and Disposal

Use a HEPA-filtered vacuum to clean work surfaces and equipment 9, 19.
Wet wipe surfaces to remove remaining dust [3].
Dispose of waste materials in sealed containers 4, 8.
Do not use compressed air for cleaning, as it can spread dust 4, 9, 13.

Safety considerations: Proper clean-up is essential to prevent secondary dust exposure.

9. Precautions and Safety Measures

Avoid Dry Sweeping: Do not dry sweep or use compressed air for cleaning, as this can create airborne dust 4, 9, 13.
Hygiene Practices: Wash hands and face thoroughly after handling silica-containing materials and before eating, drinking, or smoking 6, 8, 16.
Clothing Management: Change out of work clothes before leaving the work site. Wash work clothes separately from other clothing 4, 8, 9, 13.
Respiratory Protection Program: Implement a respiratory protection program that includes fit testing, medical evaluations, and training on respirator use and maintenance 6, 10.
Medical Surveillance: Provide medical surveillance for workers who may be exposed to silica dust, as required by regulations [1].

10. Emergency Procedures

10.1 General Emergency Response

In case of a serious injury, immediately call for emergency medical assistance [PHONE NUMBER].
Administer first aid as needed.
Evacuate the area if necessary.

10.2 Specific Emergency Scenarios

Eye Exposure: Flush eyes with water for at least 15 minutes. Seek medical attention [1].
Inhalation: Move to fresh air. Seek medical attention if breathing is difficult [1].
Skin Contact: Wash affected area with soap and water [1].

10.3 Emergency Contact Information

Emergency Medical Services: [PHONE NUMBER]
Site Supervisor: [PHONE NUMBER]
Health and Safety Department: [PHONE NUMBER]

11. Incident Reporting and Investigation

Report all incidents, near-misses, and health concerns to the supervisor immediately. An investigation will be conducted to determine the root cause and implement corrective actions to prevent recurrence.

Approved by: [NAME AND POSITION] Date: [APPROVAL DATE]