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The electrical safety develops with the technical progress. In 1989 OSHA [1] promulgated a much-needed regulation in the General Industry Regulations. Several standards are defined for control of hazardous energy, or lockout/tagout. In 1995 OSHA was successful in promulgation of regulations for utility. [2]
Traveling in an emergency vehicle has shown to expose a person to between 103 and 114dBA of sound. According to OSHA, exposure at this level is acceptable for between 17 and 78 minutes [ 103 ] and according to NIOSH is acceptable for between 35 seconds and 7.5 minutes [ 104 ] over a 24-hour day before permanent hearing loss can occur.
An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.
In industry this is an OSHA standard, as well as for electrical NFPA 70E. OSHA's standard on the Control of Hazardous Energy (Lockout-Tagout), found in 29 CFR 1910.147, [3] spells out the steps employers must take to prevent accidents associated with hazardous energy. The standard addresses practices and procedures necessary to disable ...
Care must usually be taken to ensure that the lines are insulated with a proper "flashover rating" and sufficiently spaced from each other to prevent an arc flash from spontaneously developing. If the high-voltage lines become too close, either to each other or ground, a corona discharge may form between the conductors.
In the United States, the Federal Aviation Administration requires that pilots be tested for normal color vision as part of their medical clearance in order to obtain the required medical certificate, a prerequisite to obtaining a pilot's certification. If testing reveals color blindness, the applicant may be issued a license with restrictions ...
Scientific diving is any diving undertaken in the support of science, so activities are widely varied and may include visual counts and measurements of organisms in situ, collection of samples, surveys, photography, videography, video mosaicing, benthic coring, coral coring, placement, maintenance and retrieval of scientific equipment.
Studies have found that some physicians do not seem to show any care or concern toward treating the medical problems of older people. Then, when interacting with these older patients on the job, the doctors sometimes view them with disgust and describe them in negative ways, such as "depressing" or "crazy". [ 109 ]