How is a 'critical lift' defined, and what precautions are typically required?

• A. A lift that is small and easily managed; no extra precautions.
• B. A lift near or at rated capacity or with complex rigging; requires enhanced planning, more experienced personnel, and a formal lift plan.
• C. Any lift that uses multiple cranes; no formal plan needed.
• D. A lift performed in daylight only.

Answer: (B)

A critical lift is a lift that pushes toward the crane’s capacity or involves complex rigging or unusual load geometry. Because the margin for error is small in these situations, it requires careful, formal planning and documented procedures. The typical precautions include a formal lift plan that clearly states the load weight and center of gravity, the rigging configuration and equipment, the crane or cranes to be used, the number of cranes if needed, and the sequence of operations. It also involves a designated lift director and other qualified personnel, a pre-lift briefing, and thorough checks of wind conditions, ground stability, outriggers or cribbing, and rigging integrity. A clear communication plan, defined stop criteria, and contingency measures for weather or equipment issues are essential. While standard lifts still require safe practices, the extra planning and formal plan are what distinguish a critical lift. The fact that a lift uses multiple cranes or is performed in daylight does not by itself define it as critical; the key factor is proximity to capacity or the presence of complex rigging and risk.