Hot Mix Plant – Procedure Guide

Use this checklist to safely start up and shut down your asphalt hot mix plant, ensuring operational readiness and compliance.

Critical Safety Procedures

Following these safety procedures ensures the protection of personnel and equipment during hot mix plant startup and shutdown operations.

Emergency Shutdown Procedure

  • Activate emergency stop button on main control panel
  • Immediately shut off burner fuel supply
  • Stop all material feed systems
  • Keep exhaust and dust collection systems running
  • Evacuate personnel from danger areas
  • Contact supervisor and maintenance personnel

Cold Weather Startup Modifications

  • Extend warm-up time for hydraulic systems
  • Check for ice accumulation on components
  • Verify heating elements for AC lines are functioning
  • Run equipment at reduced speed initially
  • Monitor moisture content in aggregates (may be higher)

Extended Shutdown Preparation

  • Clean all mixing components thoroughly
  • Apply release agent to surfaces prone to buildup
  • Drain water from air lines and tanks
  • Secure and cover electrical components
  • Implement rodent/pest control measures
  • Document plant status for startup crew

Emission Control Procedures

  • Ensure baghouse/wet scrubber fully operational before burner ignition
  • Monitor stack opacity during startup and production
  • Maintain proper air/fuel ratio for clean combustion
  • Keep dust suppression systems active until plant is cooled
  • Document emission readings for compliance records

Safety Pro Tips

  • Always wear appropriate PPE including safety glasses, gloves, and anti-static footwear
  • Never use mobile phones or other electronic devices during fuel transfer operations
  • Ensure at least two people are present during large volume transfers
  • Verify all emergency contact information is current and posted at the transfer site