Machine guard types

What type of machine guarding does OSHA mandate in food preparation areas ... 

To prevent this type of accident, do not remove machine guards unless lockout/tagout procedures have been implemented. Do not wear loose clothing when working around revolving spindles, drums, or drive shafts. 

Presence-Sensing Devices Presence sensing devices detect whether the operator s fingers or hands are or could be in the point-of-operation. If they are, the machine will not operate or will stop quickly enough to prevent injury. Presence-sensing devices are not a suitable alternative for some machines. Each type of device has particular limitations. Guards should protect all areas not protected by presence-sensing devices. 

Accident prevention techniques, such as job hazard analysis, safe operating procedures, and job safety observations, have their application to specific jobs within the workplace. In general, they aim to address and identify existing or potential work-related hazards. These types of accident prevention techniques are emphasized in this book. Most books addressing accident prevention techniques usually emphasize specific job hazards and their prevention, such as fire safety and machine guarding. This particular book places only minor emphasis on specific job hazards. 

Prepare a list of the different types of machine guards in a selected workplace. Comment on their suitability. 

Otherwise, it would seem to be a case-by-case situation that depends on factors such as (but not limited to) the type of equipment, its application, and any additional operator safety concerns. If having the machinery near another machine poses a hazard, OSHA would expect measures be put in place to protect workers. The agency could potentially use the General Duty Clause or perhaps the machine guarding regulations in Subpart O, Machinery and Machine Guarding, to cite an employer. 

There are very detailed machine guarding requirements for abrasive wheel machinery in 1910.215 depending on the operation and equipment and wheel characteristics. However, certain types of wheels are excluded from coverage under that standard. Specifically, OSHA says in (a)(5) that exclused machinery includes natural sandstone wheels and metal, wooden, cloth, or paper discs, having a layer of abrasive on the surface. ... 

What type of machine guard limits the operator s access to the danger zone ... 

A barrier guard is a safety device designed to protect machine operators from hazard points on the machinery or equipment. Some example barrier guard types include enclosures, gates, fences, and interlocks. 

Type B2-standards relate to safety equipment (machine guarding, safety mats, etc.). 

A weather-protected Type I machine is a guarded machine with its ventilating passages so constructed as to minimize the entrance of rain, snow and air-borne particles to the electric parts. 

Normally a guard is installed on a moving part of the machine, which acts as a barrier to prevent the entry of any part of the human body in the hazardous area. It is also possible that a safety device is installed that prevents or interrupts the operation if part of the operator s body is in a hazardous area or requires its withdrawal prior to machine operation. The guard or safety device itself must not constitute a hazard, must be safe, low maintenance, easy-to-use, automatically controlled, or fixed on the machines. There are different types of guards and safety devices available according to the design and demands of machines. 

A type of rating assigned under the Industrial Compensation Rating Schedule, as approved by the insurance commissioner, by which the Basic Manual Rate is modified to fit the physical conditions related to guarding of machines. It is also affected by the compliance of a safety organization to prescribe insurance standards. It has not been used in most states recently. 

A type of machine interlock system that has a mechanical device that requires a specific time period for a guard to be released after the power has be shut off... 

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