Ensuring ANSI B20.5.9.3 Compliance: A Checklist for Guarding Nip and Shear Points in Mining

In the mining industry, safety is non-negotiable. Ensuring compliance with ANSI B20.5.9.3 on the guarding of nip and shear points is crucial for protecting workers from hazardous machinery. Here's a comprehensive checklist to guide your efforts toward full compliance.

Understanding Nip and Shear Points

Nip and shear points occur where parts of machinery move in close proximity, creating a risk of trapping or cutting. In mining operations, these points are common in conveyor systems and other moving equipment.

Compliance Checklist

• Identify All Nip and Shear Points: Conduct a thorough inspection of all machinery to locate any nip or shear points. Document these locations for reference.
• Evaluate Existing Guards: Assess the current guarding in place. Ensure that guards are designed to prevent access to nip and shear points during operation.
• Implement Additional Safeguards: If existing guards are insufficient, install additional guards or safety devices. Consider interlock systems that stop machinery if guards are removed.
• Ensure Guard Durability: Guards must be durable enough to withstand the mining environment. Use materials that resist wear and corrosion.
• Regular Maintenance: Schedule regular inspections and maintenance of guards to ensure they remain effective. Replace or repair any compromised guards immediately.
• Training and Awareness: Train all employees on the hazards of nip and shear points and the importance of maintaining guards. Conduct regular safety briefings to reinforce this training.
• Documentation and Compliance: Keep detailed records of all inspections, maintenance, and training sessions. Ensure these records are accessible for audits and compliance checks.
• Consult ANSI B20.5.9.3: Regularly review the specific requirements of ANSI B20.5.9.3, especially section 6 for conveyors, to ensure all guidelines are followed.

Real-World Application

In my experience working with mining operations, the implementation of robust guarding systems has significantly reduced incidents related to nip and shear points. One particular case involved a conveyor system where we installed new guards and interlock systems, resulting in a safer working environment and peace of mind for the workers.

Additional Resources

For further guidance on safety standards in mining, consider the following resources:

• OSHA's Mining Safety and Health Administration (MSHA) guidelines
• National Institute for Occupational Safety and Health (NIOSH) publications on mining safety

By following this checklist and staying informed with the latest safety standards, mining operations can achieve and maintain compliance with ANSI B20.5.9.3, ensuring a safer workplace for all.