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Date: 1 January 2007: Source: Ergonomic Guidelines for Manual Material Handling was prepared for publication by the Cal/OSHA Consultation Service, Research and Education Unit, Division of Occupational Safety and Health, California Department of Industrial Relations.
Manual material handling tasks may expose workers to physical risk factors. If these tasks are performed repeatedly or over long periods of time, they can lead to fatigue and injury. The main risk factors, or conditions, associated with the development of injuries in manual material handling tasks include: Awkward postures (e.g., bending, twisting)
Although musculoskeletal disorder can develop overtime, when manual handling of materials, they can also occur after only one activity. Some of the common injuries associated with manual handling of loads include but are not limited to: Sprains and strains of muscles, ligaments, and tendons; Back injuries; Bone injuries; Nerve injuries; Tissue ...
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Some have alleged that departures in normality in the process output significantly reduce the effectiveness of the charts to the point where it may require control limits to be set based on percentiles of the empirically-determined distribution of the process output [2]: 237 although this assertion has been consistently refuted. See Footnote 6.
Control charts are graphical plots used in production control to determine whether quality and manufacturing processes are being controlled under stable conditions. (ISO 7870-1) [1] The hourly status is arranged on the graph, and the occurrence of abnormalities is judged based on the presence of data that differs from the conventional trend or deviates from the control limit line.
Lifting equipment can be assigned a Working Load Limit (WLL) in the interests of avoiding failure; Working Load Limit is calculated by dividing the Minimum Breaking Load of the equipment by a safety factor. [5] WLL as a concept is not restricted to lifting, being also relevant for mooring ropes. [6]
Better efficiency: Material handling equipment helps streamline the movement of products. Compared to manual handling, materials handling equipment greatly saves time and effort. [21] Improved safety: When manually handling goods, there are a lot of risks of injuries experienced e.g fall from heights. When unit load formation equipment is ...