Engineering controls are methods that are built into the design of a plant, equipment or process to minimize the hazard. Engineering controls are a very reliable way to control worker exposures as long as the controls are designed, used and maintained properly. The basic types of engineering controls are: Show
Process ControlProcess control involves changing the way a job activity or process is done to reduce the risk. Monitoring should be done before and as well as after the change is implemented to make sure the changes did, in fact, control the hazard. Examples of process changes include to:
Enclosure and IsolationThese methods aim to keep the chemical "in" and the worker "out" (or vice versa). An enclosure keeps a selected hazard "physically" away from the worker. Enclosed equipment, for example, is tightly sealed and it is typically only opened for cleaning or maintenance. Other examples include "glove boxes" (where a chemical is in a ventilated and enclosed space and the employee works with the material by using gloves that are built in), abrasive blasting cabinets, or remote control devices. Care must be taken when the enclosure is opened for maintenance as exposure could occur if adequate precautions are not taken. The enclosure itself must be well maintained to prevent leaks. Isolation places the hazardous process "geographically" away from the majority of the workers. Common isolation techniques are to create a contaminant-free or noise-free booth either around the equipment or around the employee workstations. VentilationVentilation is a method of control that strategically "adds" and "removes" air in the work environment. Ventilation can remove or dilute an air contaminant if designed properly. Local exhaust ventilation is very adaptable to almost all chemicals and operations. It removes the contaminant at the source so it cannot disperse into the work space and it generally uses lower exhaust rates than general ventilation (general ventilation usually exchanges air in the entire room). Local exhaust ventilation is an effective means of controlling hazardous exposures but should be used when other methods (such as elimination or substitution) are not possible. A local exhaust ventilation system consists of these basic parts:
Figure 4 The design of a ventilation system is very important and must match the particular process and chemical or contaminant in use. Expert guidance should be sought. It is a very effective control measure but only if it is designed, tested, and maintained properly. Because contaminants are exhausted to the outdoors, you should also check with your local environment ministry or municipality for any environmental air regulations or bylaws that may apply in your area. Which of the following is a Windows service that assists utilities and applications in creating snapshots of a running Windows system quizlet?Volume Shadow Copy Service (VSS) is a Windows service that assists utilities and applications in creating snapshots of a running Windows system.
Which of the following refers to a software implementation of a physical computer?Which of the following refers to a software implementation of a physical computer? Virtual machine (VM) A copy of information created to assist in the recovery of the information in the event the primary copy is damaged or destroyed is referred to as a: secondary copy.
Which of the following documents provide alternative modes of operation for interrupted business activities?A. A business continuity plan (BCP) is the development of a strategic document that provides alternative modes of operation for business activities that, if interrupted, could result in a significant loss to the enterprise.
Which of the following is the best example of the principle of least privilege?Which of the following practices are the BEST example of the principle of least privilege? All users on a Windows workstation are limited user except for one user, who is responsible for maintaining the system.
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