Job Safety Analysis: Thermoplastic Line Application

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Step Potential Hazard Control
Assess work zone and traffic conditions Vehicles approaching unexpectedly, limited visibility, crew drifting into open lanes Set up MUTCD compliant work zone; use cones, signs, and arrow boards; assign a lookout to monitor traffic and crew
Inspect thermoplastic equipment Leaking hoses, clogged applicator shoes, malfunctioning burners or pumps Conduct full equipment inspection; check heating system, bead dispenser, pressures, and safety shutoffs; remove damaged equipment from service
Don required PPE Burns from molten thermoplastic, eye injury, struck by hazards Wear heat resistant gloves, face protection, long sleeves, and high visibility vest before entering roadway
Heat thermoplastic material Overheating material causing degradation or fire, burns from splatter Heat only to manufacturer specified temperature; monitor gauges; avoid leaning over kettle; keep fire extinguisher nearby
Prepare pavement surface Loose debris affecting adhesion, trip hazards, dust inhalation Sweep or blow pavement thoroughly; ensure surface is dry; maintain safe distance from debris stream
Position equipment Backing hazards, blind spots, equipment striking workers Use a spotter when positioning thermoplastic applicator; verify backup alarms and beacons are functioning
Begin applying thermoplastic Material splashing, contact with molten line, overspray or runoff Operate at steady speed; maintain smooth applicator movement; keep all workers clear of molten material; use shields as designed
Apply reflective beads Eye exposure, slipping hazard from loose beads Maintain correct bead drop rate; avoid excessive bead use; keep crew away from bead discharge area
Maintain communication Miscommunication leading to uneven lines, unsafe movements, or traffic conflicts Use radios or hand signals; ensure operator and ground crew maintain constant coordination
Handle traffic around operation Vehicles entering lane too early, motorists driving through wet thermoplastic Maintain taper and cones until markings cool; use pilot vehicles if needed; assign lookout to watch for early entry
Monitor cooling period Burns, tracking of uncured markings Keep crew and traffic away until thermoplastic fully hardens; mark fresh lines with cones if necessary
Shutdown and clean equipment Contact with hot equipment, improper disposal of thermoplastic residue Allow unit to cool; follow manufacturer cleaning procedures; dispose of waste properly; store materials securely
Remove traffic control Worker exposure to traffic during takedown Remove devices in reverse order; maintain protective vehicle position; use lookout until all devices are retrieved

Suggested Personal Protective Equipment

  • Hard hat

  • Safety glasses or face shield

  • High visibility vest (Class 2 or Class 3 depending on roadway)

  • Heat resistant gloves

  • Long sleeve shirt and long pants

  • Steel toe boots

  • Respiratory protection if required by product or fume conditions

  • Hearing protection when working near loud equipment

Always have a complete, well-stocked first aid kit available.

JSA Category: Roadway Maintenance Operations

* The steps, hazards, and controls displayed above may be incomplete or not suit your department's needs. All job safety analyses should be a completed with frontline worker input to ensure that each potential hazard is identified and mitigated.

Please read about The Essentials Elements of a Solid Job Safety Anaylsis here.

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Job Safety Analysis
Step Potential Hazard Control
Assess work zone and traffic conditions Vehicles approaching unexpectedly, limited visibility, crew drifting into open lanes Set up MUTCD compliant work zone; use cones, signs, and arrow boards; assign a lookout to monitor traffic and crew
Inspect thermoplastic equipment Leaking hoses, clogged applicator shoes, malfunctioning burners or pumps Conduct full equipment inspection; check heating system, bead dispenser, pressures, and safety shutoffs; remove damaged equipment from service
Don required PPE Burns from molten thermoplastic, eye injury, struck by hazards Wear heat resistant gloves, face protection, long sleeves, and high visibility vest before entering roadway
Heat thermoplastic material Overheating material causing degradation or fire, burns from splatter Heat only to manufacturer specified temperature; monitor gauges; avoid leaning over kettle; keep fire extinguisher nearby
Prepare pavement surface Loose debris affecting adhesion, trip hazards, dust inhalation Sweep or blow pavement thoroughly; ensure surface is dry; maintain safe distance from debris stream
Position equipment Backing hazards, blind spots, equipment striking workers Use a spotter when positioning thermoplastic applicator; verify backup alarms and beacons are functioning
Begin applying thermoplastic Material splashing, contact with molten line, overspray or runoff Operate at steady speed; maintain smooth applicator movement; keep all workers clear of molten material; use shields as designed
Apply reflective beads Eye exposure, slipping hazard from loose beads Maintain correct bead drop rate; avoid excessive bead use; keep crew away from bead discharge area
Maintain communication Miscommunication leading to uneven lines, unsafe movements, or traffic conflicts Use radios or hand signals; ensure operator and ground crew maintain constant coordination
Handle traffic around operation Vehicles entering lane too early, motorists driving through wet thermoplastic Maintain taper and cones until markings cool; use pilot vehicles if needed; assign lookout to watch for early entry
Monitor cooling period Burns, tracking of uncured markings Keep crew and traffic away until thermoplastic fully hardens; mark fresh lines with cones if necessary
Shutdown and clean equipment Contact with hot equipment, improper disposal of thermoplastic residue Allow unit to cool; follow manufacturer cleaning procedures; dispose of waste properly; store materials securely
Remove traffic control Worker exposure to traffic during takedown Remove devices in reverse order; maintain protective vehicle position; use lookout until all devices are retrieved
Suggested Personal Protective Equipment