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Confined space training outlines the skills and protocols for safe entry to confined spaces, and includes precautions such as locking and tagging out connecting piping, testing of breathable air quality, forced ventilation, observation of workers in the space, and a predetermined rescue plan with appropriate safety harnesses and other rescue ...
Due to the unique nature of confined space rescues, there is specialized equipment necessary to perform a safe and successful rescue. One of the initial pieces of equipment employed in a confined space is a method of ventilation to disperse collected hazardous gases and introduce fresh air into the environment.
Positive pressure ventilation (PPV) Ventilation of an area by the use of a fan to push clean air into that space and controlled use of openings for the escape of smoke and gasses. Post indicator valve (PIV) A type of valve used for underground piping, having a lockable actuator atop a post with a window indicating "open" or "shut" status of the ...
The way that the balcony or vestibule is ventilated divides smokeproof enclosures into two basic types: mechanically ventilated which is not actually a smokeproof enclosures, where the vestibule and stairwell are ventilated by mechanical equipment, and naturally ventilated open air smokeproof enclosures where the open balcony or vestibule [or ...
Ergonomists and industrial hygienists aim to prevent musculoskeletal disorders and soft tissue injuries by fitting the workers to their work space. Tools, lighting, tasks, controls, displays, and equipment as well as the employee's capabilities and limitations must all be considered to create an ergonomically appropriate workplace.
These are systems used to supply breathing gas on demand in a chamber which is at a pressure greater than the ambient pressure outside the chamber. [1] The pressure difference between chamber and external ambient pressure makes it possible to exhaust the exhaled gas to the external environment, but the flow must be controlled so that only exhaled gas is vented through the system, and it does ...
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