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Legislation and Trends
Published in Thomas D. Schneid, Legal Liabilities in Safety and Loss Prevention, 2019
Administrative controls should reduce the duration, frequency, and severity of ergonomic stressors. These might include the following methods: Reduce the total number of repetitions per employee by decreasing production rates and limiting overtime work.Provide rest pauses to relieve fatigued muscle–tendon groups.Increase the number of employees assigned to a task, thus alleviating severe conditions, especially while lifting heavy objects.Rotate jobs as a preventive measure. The principle of job rotation is to alleviate the physical fatigue and stress of a particular set of muscles and tendons by rotating employees among other jobs that use different motions. The ergonomic team should analyze each operation to ensure that the same muscle–tendon groups are not used.Provide sufficient standby and relief personnel for a foreseeable condition on production lines.Enlarge jobs.Perform preventive maintenance for mechanical and power tools and equipment, including power saws and knives.
Designing and Installing a Fitted Kitchen
Published in Les Goring, Manual of First and Second Fixing Carpentry, 2018
Figure21.7(a): Because worktop (1) in Figure 21.6(b) was butted to the wall at each end, the square angle of the walls had to be checked and any major deviation transferred to the worktop prior to cutting. Cutting can be done with a hardpoint handsaw or from the underside with a portable circular saw fitted with a 60 or 80 toothed TCT blade. Because circular- saw teeth revolve upwards towards the front of the saw’s base, cutting from the underside minimizes damage to the laminate surface. After being fitted with a slight tolerance, worktop (1) was then removed and positioned for routing.
Manufacturing Products
Published in Roger Timings, Basic Manufacturing, 2006
Saws are used to cut wood, wood products such as chip and block board and some composite materials. The correct type and size must be selected for the task to be carried out. Saws are classified by size and type, and may be selected according to the pitch of the teeth to suit the thickness or width of the material to be cut. Typical saws are shown in Fig. 3.13.
Investigation of abrasive saw kickback
Published in International Journal of Occupational Safety and Ergonomics, 2022
Steven Burcat, Brian Yue, Alexander Slocum, Tal Cohen
A variety of saws are used on construction sites, but they can generally be divided into two main categories: chainsaws and circular cutoff saws. Circular cutoff saws have a large-diameter blade that spins on a shaft in stationary bearings. Chainsaws have a chain that moves around a stationary saw bar, which has a small-diameter semicircle at the nose. For this study, two representative gas-powered saws – one circular cutoff saw (Stihl TS420; Stihl USA, USA) and one chainsaw (ICS 695XL; Blount International, USA) – were used. Additionally, an electric circular cutoff saw (ECCS) was used for initial tuning of the physics model and validation of the machine's data collection. This approach is similar to that taken by Arnold and Parmigiani [9], using electric and gas-powered saws and, subsequently, comparing data.