Safety Norms: Construction and Heavy Equipment Manufacturing

1Purpose, Scope, and Safety Principles

This document sets out norms for people who design, fabricate, assemble, test, paint, load, and commission construction and heavy equipment. It applies to employees, temporary workers, contractors, and visitors in production yards, shops, test areas, and customer sites where finished machines are commissioned. The goal is to prevent fatal and serious injury, protect the public near production and transport routes, and protect soil, water, and air from releases.

Mandatory rules use the words must and cannot. They may not be waived except by written approval from the site safety lead. Recommendations use the word should and describe good practice that may be replaced by an equally effective method that is approved locally.

• Apply hazard controls in this order: eliminate the hazard, substitute a safer method, guard or isolate it, warn people with signs and training, and use personal protective equipment as the last line of defense.
• Treat every machine as energized until isolation is verified.
• Stop work when a control is missing, damaged, or unclear.

2Roles, Competence, and Accountability

The plant manager funds the safety program, including guarding, inspection equipment, training, and environmental controls. The production supervisor assigns only trained and authorized workers, confirms permits are valid before work starts, and stops tasks that lack controls. The safety lead maintains the hazard register, approves permits, leads incident investigations, and audits compliance. Maintenance leads control isolation and repair records. Engineers verify design controls, load ratings, control logic, and test procedures.

Competence is verified before a person works alone. Training alone does not equal authorization. Supervisors record the employer's authorization for each restricted task.

• Operators of cranes, forklifts, aerial platforms, and hoists must hold any license or credential required by the local jurisdiction and the employer's written authorization for each machine type.
• Welders must be qualified to the applicable welding procedure specification and must hold current performance records.
• No one may operate a machine, remove a guard, or bypass an interlock without written authorization.
• Contractors must receive the site induction and show their own training records before starting work.

3Course-Specific Hazards and Risk Assessment

Principal hazards include crushing from hydraulic cylinders, booms, blades, and articulated frames; falls from machine platforms, cab steps, and elevated work areas; struck-by incidents from swinging loads, reversing machines, and dropped components; electrical contact with overhead lines, welding circuits, and energized test power; fire and explosion from fuel, hydraulic oil, paint solvents, and hot work; noise and vibration from grinding, shot blasting, and engine testing; silica and metal fume exposure from abrasive blasting and welding; and chemical contact from coatings, degreasers, and refrigerants. Public hazards include loads falling during transport, uncontrolled test runs, and dust or runoff leaving the site.

Risk is rated for each task using an example scheme of likelihood from 1 to 5 multiplied by severity from 1 to 5. Scores of 15 or higher stop work until controls reduce the score. Adjust the scheme to the local risk procedure. Job hazard analysis is required for any non-routine task, and the safety lead reviews it before work begins.

• Assess every new machine design, process change, new supplier part, and new site before work starts.
• Record the task, hazard, existing controls, risk rating, control owner, and action due.
• Reassess when a design, supplier, procedure, weather condition, or site layout changes.
• Identify the public exposure zone for every test run and transport movement.

4Preventive Controls and Safe Work Practices

Energy isolation is the most important control in this field. Before maintenance, jam clearing, or entry into a machine envelope, the authorized worker isolates electrical, hydraulic, pneumatic, fuel, and gravity energy, applies a personal lock and tag to each isolation point, releases stored energy from accumulators and cylinders, and verifies zero energy with a test before starting. A tag alone is not an isolation device. Locks remain with the worker until the job is complete.

Lifting requires a written lift plan for any load above the threshold set by the site lifting procedure. The plan confirms rated capacity against the manufacturer's load chart with the correct boom configuration, a designated signaler, ground conditions, wind limits stated by the manufacturer, and marked exclusion zones. No one stands under a suspended load or within the swing radius. Slings, shackles, and hooks are inspected before use and removed from service when damaged.

Hot work, including welding, cutting, and grinding near flammables, requires a permit issued by the safety lead. Combustibles are cleared to the distance stated in the local procedure or the permit, a fire watch remains in place for the period written on the permit, and a charged extinguisher is at the work point. Hot surfaces, sparks, and fume plumes are controlled before work moves to a new position.

• Guards on belts, chains, couplings, rotating shafts, press brakes, and saws stay in place during operation.
• Interlocked guards must stop motion when opened. Any bypass requires a tagged temporary procedure approved by engineering and time limited by the permit.
• Confined spaces such as fuel tanks, hydraulic reservoirs, and enclosed cabs during coating require atmospheric testing, forced ventilation, an attendant outside, and a rescue plan before entry. Untrained workers do not enter.
• Run-in and load testing occur only in marked test zones with physical barriers, a named test director, and two-way communication. Test personnel stay outside the arc of booms, tracks, and blades.
• Mobile equipment on site must have functioning backup alarms and lights checked before each shift, and operators use a spotter when the line of sight is blocked.
• Pedestrian routes are separated from equipment routes with barriers or painted walkways wherever layout allows.

5Equipment, Environment, Information, and Protective Safeguards

Minimum personal protective equipment on the shop floor includes safety glasses, hearing protection where noise requires it, steel-toe footwear, and gloves matched to the task. Welders add flame-resistant clothing, a helmet with a filter shade suited to the process, and respiratory protection where fume assessment requires it. Fall protection, including a full body harness and a certified anchor point, is required above the height set by local rules and wherever guardrails are absent. Fit tests, inspections, and replacement records are kept. PPE does not replace engineering controls.

Environmental controls focus on air, water, and waste. Welding and spray booth ventilation is inspected on a set schedule, and filters are replaced when the manufacturer or procedure requires it. Fuels, oils, and solvents are stored in labeled, bunded, approved containers away from ignition sources. Spill kits are placed at fueling, paint, and wash areas. Abrasive blasting and grinding dust is controlled with enclosures, local exhaust, or wet methods. Wash water, paint residue, and used filters are handled as waste under the applicable regulations.

• Keep current drawings, load charts, manufacturer manuals, and wiring diagrams at workstations or in an approved document system.
• Keep safety data sheets for every chemical available in the work area in a language workers read.
• Restrict access to proprietary design files and controller software. Passwords for machine control programs are not shared.
• Changes to safety controller logic require engineering approval and a documented verification test.
• Use telematics and camera data from machines and test areas only for stated safety and quality purposes, follow local privacy rules, and limit retention to what is needed.

6Incident Reporting, Emergency Response, and Escalation

Report every injury, near miss, equipment failure, property damage, and environmental release to the supervisor immediately and to the safety lead before the end of the shift. Do not disturb the scene beyond what is needed to prevent further harm or rescue people. Emergency numbers, assembly points, first aid locations, and spill kit locations are posted in each work area.

Emergency response depends on the situation. Serious injury, fire, electrical contact, and confined space rescue require a call to emergency services and a stop of all related work. Only trained first aiders provide first aid. Injection injuries from hydraulic lines are medical emergencies even when the wound looks minor and must be treated immediately by qualified medical staff.

• Stop the task, make the area safe, and prevent others from entering.
• Do not enter a confined space or approach a person in contact with energized equipment until a trained person has isolated the energy source.
• For fuel, oil, coolant, or solvent spills, stop the source if safe, contain the material with absorbent, notify the environmental coordinator, and report to authorities where reporting thresholds apply. Thresholds and notification times are jurisdiction dependent.
• If the supervisor is unavailable or a control has failed, escalate directly to the safety lead and the plant manager.
• Any worker may stop work without penalty when conditions appear unsafe.

7Records, Training, Inspection, and Review

Keep training records for each worker, including topics, practical assessments, authorizations, and refresher intervals set by the procedure. Inspection records cover cranes, hoists, slings, chains, lifting attachments, pressure equipment, welding machines, and portable power tools. Defective items are tagged out and removed from service until repaired and verified. Maintain a machine history file with manufacturer instructions, modifications, test results, and corrective actions.

Monitor leading indicators such as overdue inspections, open corrective actions, permit audit findings, and near miss reports. Review the hazard register after incidents, design changes, new equipment, and new suppliers. Use audits and worker feedback to revise controls. Record each change and communicate it to affected workers before the revised task starts.

• Complete a pre-use inspection of mobile equipment before each shift and record defects.
• Have qualified inspectors examine welds, lifting equipment, and pressure components as required by the applicable code and the employer's procedure.
• Verify that every permit closes out with a completion check.
• Run a drill for emergency response and spill response at the frequency set by the site plan.

Implementation checklist

• Confirm the task has a current hazard assessment and a valid permit where required.
• Verify lifting equipment capacity against the load chart before every lift.
• Apply lockout tagout and verify zero energy before any maintenance or jam clearing.
• Keep all machine guards and interlocks in place during operation.
• Wear PPE matched to the task and check fall protection before working at height.
• Confirm ventilation and fire watch before welding, cutting, grinding, or spray work.
• Store fuels, oils, and solvents in labeled, contained areas with spill kits nearby.
• Report every incident and near miss to the safety lead before the shift ends.
• Keep training, authorization, inspection, and maintenance records current.
• Verify current laws and standards with competent authorities before adopting any procedure.