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  2. Appliance classes - Wikipedia

    en.wikipedia.org/wiki/Appliance_classes

    In Europe, a double insulated appliance must be labelled Class II or double insulated or bear the double insulation symbol: ⧈ (a square inside another square). As such, the appliance should not be connected to an earth conductor because the high-impedance casing will cause only low-fault currents that are unable to trigger the fusible cut-out.

  3. Occupational Safety and Health Administration - Wikipedia

    en.wikipedia.org/wiki/Occupational_Safety_and...

    OSHA's mission is to "assure safe and healthy working conditions for working men and women by setting and enforcing standards and by providing training, outreach, education, and assistance." [2] The agency is also charged with enforcing a variety of whistleblower statutes and regulations. OSHA's workplace safety inspections have been shown to ...

  4. Two-in, two-out - Wikipedia

    en.wikipedia.org/wiki/Two-in,_two-out

    In firefighting, the policy of two-in, two-out refers to United States Occupational Safety and Health Administration (OSHA) policy 29 CFR 1910.134(g)(4)(i). [1] The respiratory protection standard requires that workers engaged in fighting interior structural fires work in a buddy system; at least two workers must enter the building together, so that they can monitor each other's whereabouts as ...

  5. Globally Harmonized System of Classification and Labelling of ...

    en.wikipedia.org/wiki/Globally_Harmonized_System...

    Category 1 is reserved for samples which self-heat in small quantities (25 mm 2), and all other self-heating substances that only heat in large quantities are listed under Category 2. Substances and mixtures which, in contact with water, emit flammable gases are categorized from 1 to 3 based on the ignitability of the gas emitted.

  6. Permissible exposure limit - Wikipedia

    en.wikipedia.org/wiki/Permissible_exposure_limit

    The permissible exposure limit (PEL or OSHA PEL) is a legal limit in the United States for exposure of an employee to a chemical substance or physical agent such as high level noise. Permissible exposure limits were established by the Occupational Safety and Health Administration (OSHA). Most of OSHA's PELs were issued shortly after adoption of ...

  7. Occupational Safety and Health Act (United States) - Wikipedia

    en.wikipedia.org/wiki/Occupational_Safety_and...

    Section 8 permits OSHA inspectors to enter, inspect and investigate, during regular working hours, any workplace covered by the Act. [26] Employers must also communicate with employees about hazards in the workplace. By regulation, OSHA requires that employers keep a record of every non-consumer chemical product used in the workplace.

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