📊Snook-Liberty Mutual Tables – Population-Based Lifting and Carrying Analysis
Snook-Liberty Mutual Tables are a critical ergonomics tool that analyzes worker safety in manual material handling tasks using population-based scientific data. With Tokgöz Ergonomics, these tables offer a strategic solution to ensure the safety of different worker groups with varying genders, ages, and capacities in the workplace.
1️⃣ The Unique Structure of Snook-Liberty Tables
Snook-Liberty tables are designed with a population-focused approach that distinguishes them from other lifting and carrying analysis tools:
Safe Limits and Threshold Values:
They determine safe lifting limits based on workload, frequency of movement, and population percentage. For example, the ability of 75% or 90% of the population to safely perform a job is mathematically demonstrated.
Female Worker Safety:
It specifically considers the physical capacities of female workers.
Job design and ergonomic measures are optimized to suit each worker group.
Population-Based Risk Management: Provides safe limits for the entire workforce population, not just a single person or ideal conditions.
2️⃣ Strategic Position in Lifting and Handling Analyses
Snook-Liberty tables are a key part of Tokgöz Ergonomics' extensive manual handling analysis set:
Comparison with NIOSH: The NIOSH Revised Lifting Equation focuses on biomechanical and mathematical measurements.
Snook-Liberty, on the other hand, assesses suitability for the entire workforce and offers a comprehensive perspective.
Quick Screening Tools:
Simple lifting and lowering tasks are analyzed with the WISHA Lifting Calculator.
The MAC Tool is used to assess musculoskeletal risks (MSD) of manual handling tasks.
Pushing and Pulling Operations: Snook-Liberty principles, by integrating with the RAPP Tool and KIM-PP methods, comprehensively analyze all handling operations.
3️⃣ Training Content and Strategic Outcomes
Snook-Liberty tables form the basis of manual handling training and provide participants with the following benefits:
Legal and Standard Compliance:
Fully compliant with ISO 11228-1/2/3 (Manual Handling Standards) and Law No. 6331 on Occupational Health and Safety.
MSD Prevention and Productivity: Musculoskeletal disorders (MSDs) are predicted and prevented before they occur.
This leads to increased productivity in the workplace.
Improvement Strategies:The data obtained forms the basis of integrated improvement plans with ergonomic engineering solutions, administrative controls, and cost analyses.
Population-Oriented Design:Workstations and workflows are designed to suit the capacity of different employee groups.
✅ Why Snook-Liberty Mutual Tables?
It defines safe lifting and handling limits for the entire workforce.
It optimizes employee safety regardless of gender, age, or whether they are young or old. It minimizes MSD risks in manual handling operations.
It provides holistic risk management by integrating with other analysis tools.
💡 Conclusion
Snook-Liberty Mutual Tables, with Tokgöz Ergonomics' philosophy of "the best posture is the next posture,": Enables job design to suit the physical capacity of employees.
Increases safety in the workplace and prevents MSD risks.
It is a decision support tool for occupational health and safety professionals.
