OSHA Safety Manuals | atmosphere
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Hazardous Atmospheres In Confined Spaces Employees in many industries enter a variety of confined spaces for inspections, testing, repair or cleaning. A confined space is any area that: (a) has limited openings for entry and exit; (b) may contain or produce toxic air contaminants; (c) has a high concentration of an inert gas; (d) is not intended for continuous occupancy; and (e) may have an oxygen-deficient atmosphere. All such spaces must be analyzed and tested before entry. Workers should also be trained to understand the hazards that may be found in these spaces. A few of the potentially hazardous gases are: Freon®...

Ventilation - An Important Aspect Of Welding Safety - The fumes produced in a welding operation can be hazardous to the welder or workers in the near vicinity. Reducing the exposure to fumes through an effective local exhaust or area ventilation system is the first line of defense in preventing discomfort or illnesses from toxic welding fumes. Respirators are another means of reducing exposure. This personal protective equipment should be considered a temporary process until more appropriate measures to control the exposure are in place. However, when the level of the exposure cannot be entirely eliminated by an exhaust ventilation system, some form...

The True Danger Of Confined Spaces Just how dangerous are confined spaces? Aren't all the warnings and procedural checks simply overkill? Hardly. Think about this: According to a study performed by Safety Sciences, the following types of confined space incidents resulted in injuries and/or fatalities: Type of Event Number of Events Number of Injuries Only Number of Fatalities Atmospheric Conditions (lack of oxygen) 80 72 78 Explosion or Fire 15 49 15 Explosion or Fire at Point of Entry 23 20 32 Electric Shock 11 2 9 Trapped in Unstable Material (cave in) 16 0 16 Struck by Falling Objects 15 1 14 These numbers should tell you something: Fifty-four % of the people exposed to oxygen deficient conditions died. For every fire within a confined space, one person...

The Silent Dangers of Confined Space Workers tend to put their faith in most indoor or confined atmospheres, thinking someone else has checked for safety.  Air, whether life sustaining or killing, is usually colorless, odorless, and tasteless.  The atmosphere in a confined space, for example, may seem like any other.  But that is one work place that must never be taken for granted.  Confined spaces have fooled scores of workers killed or injured every year because they thought someone had checked for safety or because they “followed their noses” and guessed the air smelled OK.  The air may look safe and...