Key Components of Safe Rigging Practices
March 25, 2025
This information is the result of a presentation at WUCA's Safety & Insurance Committee Meeting by Sal Proite of Superior Lifting Specialists, Inc. These notes are not intended to be comprehensive and we would recommend specific training on the equipment you utilize.
Thorough Equipment Inspection
Before any lifting operation, inspect all rigging equipment meticulously:
- Slings and Hardware: Ensure they are free from defects and have legible identification tags.
- Nylon Slings: Look for tears, frayed threads, or knots, which can compromise strength.
- Chain Slings: Check for elongation and ensure hammerlocks pivot correctly.
- Hooks (e.g., Crosby Hooks): Inspect for visible bends, twists, or open clips. Ensure the load point is centered to prevent latch failure.
If any equipment lacks proper identification or shows signs of wear, remove it from service immediately. Some items can be repaired and retagged, but always assess the cost-effectiveness and safety implications of repairs versus replacements.
Accurate Load Weight Assessment
Understanding the weight of the load is crucial:
- If the weight is unknown, halt operations until accurate information is obtained through documentation or consultation.
- Ensure the load's center of gravity is directly beneath the top suspension point to minimize swinging or shifting during lifts.
Proper Sling Angle Utilization
The angle at which slings are attached affects their load-bearing capacity:
- Two slings at a 90-degree angle can support up to 200% of the sling's rated capacity.
- At a 60-degree angle, the capacity reduces to 100% of the sling's rating.
- Always calculate and adjust sling angles to maintain safe load limits.
Adherence to OSHA Standards
Compliance with OSHA regulations is mandatory:
- Inspection Requirements: Rigging equipment must be inspected before each shift and during use as necessary to ensure safety.
- Identification Markings: Equipment must have permanently affixed and legible identification markings indicating the safe working load.
- Load Limits: Never exceed the recommended safe working load as prescribed by the manufacturer.
Additionally, for underground construction, OSHA's 29 CFR 1926.800 outlines specific safety measures, including the prohibition of employees working under suspended loads and the requirement for pre-planned suspended load routes to keep employees clear of hazards. OSHA
Conclusion
Rigging in underground construction demands meticulous planning, rigorous equipment inspection, and strict adherence to safety protocols. By implementing these best practices, contractors can significantly reduce the risk of accidents, ensuring the safety of their workforce and the success of their projects.
Key takeaways from OSHA’s Milwaukee Area Director on safety programs, inspections, penalties, and compliance resources for contractors.
Every year, OSHA releases its list of the most frequently cited violations. The 2025 list is out, and while many industries should pay attention, underground and utility contractors face unique risks that line up with several of the top violations. Here’s a breakdown of the most relevant items, along with trenching and excavation hazards that continue to be a top focus for OSHA inspectors. Fall Protection – General Requirements (1926.501) Falls remain the #1 most cited violation. For underground contractors, the risks aren’t always rooftops—they include falls around trenches, vaults, manholes, ladders, and uneven ground. Proper guardrails, harnesses, and safe working surfaces are essential. Hazard Communication (1910.1200) Chemicals are everywhere on utility jobs: fuels, solvents, coatings, and even the contents of pipes. Employers must ensure proper labeling, Safety Data Sheets (SDS), and worker training to stay compliant. Ladders (1926.1053) Climbing in and out of holes or accessing elevated work is common. Using damaged ladders, setting them up improperly, or failing to secure them leads to frequent citations—and serious injuries. Lockout/Tagout (1910.147) Whether shutting down pumps, isolating electrical lines, or dealing with hydraulic energy, contractors must properly control hazardous energy before starting work. Failure to do so can be fatal. Respiratory Protection (1910.134) Dust, silica, exhaust, and even gas leaks underground make respiratory protection critical. Employers must provide proper respirators, medical clearance, and fit testing. Fall Protection – Training (1926.503) Having equipment isn’t enough—workers must know how to use it. Training ensures employees recognize hazards and properly use fall protection systems. Scaffolding (1926.451) Though more common in building work, scaffolding is sometimes used in utility projects. Improper erection or use can lead to collapse and falls. Eye and Face Protection (1926.102) Flying debris, sparks, fluids, and dust are part of daily life in underground work. OSHA continues to cite employers who don’t provide or enforce PPE use. Trenching & Excavation Hazards – Always a Priority Beyond the top 10 list, OSHA has placed special emphasis on trenching and excavation safety because fatalities remain high. Utility contractors should pay close attention to: Cave-ins: Protective systems (sloping, benching, shoring, shielding) are required. A “competent person” must inspect trenches daily. Spoil piles and equipment placement: Keep soil and heavy equipment at least 2 feet from trench edges. Safe access/egress: Trenches 4 feet deep or more must have ladders, ramps, or stairs within 25 feet of workers. Atmospheric hazards: Test for low oxygen or hazardous gases before entry. Provide ventilation or respiratory protection if needed. Training & competency: Workers and supervisors must be trained to recognize trench hazards. Struck-by hazards: Protect workers from falling tools, materials, and equipment near trench edges. Utility strikes: Always identify and mark underground utilities before digging to avoid catastrophic incidents. Takeaway for Contractors Staying on top of OSHA’s most cited violations isn’t just about compliance—it’s about keeping crews safe and projects on track. Underground and utility contractors should: Refresh fall protection and ladder training. Update hazard communication programs. Review lockout/tagout procedures. Conduct fit testing for respirators. Enforce PPE requirements. Double down on trenching and excavation safety. By focusing on these areas, contractors can reduce risk, protect workers, and stay ahead of OSHA citations. Click Here for the Full Article, Top 10 OSHA Violations of 2025
Blend southwestern charm with luxury at a historic dude ranch and resort. Guests can enjoy horseback riding across thousands of scenic acres, championship golf, a full-service spa, and warm Western hospitality that’s been a tradition since 1948.
