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  2. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. [1] NIOSH, on behalf of the Department of Health and Human Services, filed a trademark application on June 17, 2020, for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84.

  3. Title 5 of the Code of Federal Regulations - Wikipedia

    en.wikipedia.org/wiki/Title_5_of_the_Code_of...

    The CFR was authorized by President Franklin D. Roosevelt on October 11, 1938, as a means to organize and maintain the growing material published by federal agencies in the newly mandated Federal Register. The first volume of the CFR was published in 1939 with general applicability and legal effect in force June 1, 1938. [2]

  4. Safety integrity level - Wikipedia

    en.wikipedia.org/wiki/Safety_integrity_level

    Electric and electronic devices can be certified for use in functional safety applications according to IEC 61508. There are a number of application-specific standards based on or adapted from IEC 61508, such as IEC 61511 for the process industry sector. This standard is used in the petrochemical and hazardous chemical industries, among others. [5]

  5. Automotive Safety Integrity Level - Wikipedia

    en.wikipedia.org/wiki/Automotive_Safety...

    Automotive Safety Integrity Level (ASIL) is a risk classification scheme defined by the ISO 26262 - Functional Safety for Road Vehicles standard. This is an adaptation of the Safety Integrity Level (SIL) used in IEC 61508 for the automotive industry.

  6. Equivalisation - Wikipedia

    en.wikipedia.org/wiki/Equivalisation

    To calculate equivalised income using the modified OECD equivalence scale, each member of the household is first given an equivalence value: 1.0 to the first adult; 0.5 to the second and each subsequent person aged 14 and over; 0.3 to each child aged under 14. [4] Single adult households are taken as the reference group and are given a value of 1.

  7. Toxicity category rating - Wikipedia

    en.wikipedia.org/wiki/Toxicity_category_rating

    In 40 CFR 156.62, the EPA established four Toxicity Categories for acute hazards of pesticide products, with "Category I" being the highest toxicity category (toxicity class). Most human hazard, precautionary statements, and human personal protective equipment statements are based upon the Toxicity Category of the pesticide product as sold or ...

  8. Failure rate - Wikipedia

    en.wikipedia.org/wiki/Failure_rate

    MIL-HDBK-217F, Reliability Prediction of Electronic Equipment, is a military standard that provides failure rate data for many military electronic components. Several failure rate data sources are available commercially that focus on commercial components, including some non-electronic components. Prediction

  9. Absolute Category Rating - Wikipedia

    en.wikipedia.org/wiki/Absolute_Category_Rating

    Absolute Category Rating (ACR) is a test method used in quality tests. [1] [2] The levels of the scale are, sorted by quality in decreasing order: Excellent; Good; Fair; Poor; Bad; In this method, a single test condition (generally an image or a video sequence) is presented to the viewers once only. They should then give a quality rating on an ...