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  2. Safety integrity level - Wikipedia

    en.wikipedia.org/wiki/Safety_integrity_level

    The difference between the unmitigated risk and the tolerable risk, if the unmitigated risk is higher than tolerable, must be addressed through risk reduction of provided by the SIF. This amount of required risk reduction is correlated with the SIL target.

  3. Safety instrumented system - Wikipedia

    en.wikipedia.org/wiki/Safety_instrumented_system

    An SIS performs a safety instrumented function (SIF). The SIS is credited with a certain measure of reliability depending on its safety integrity level (SIL). The required SIL is determined from a quantitative process hazard analysis (PHA), such as a Layers of Protection Analysis (LOPA). The SIL requirements are verified during the design ...

  4. Electric potential - Wikipedia

    en.wikipedia.org/wiki/Electric_potential

    The electric potential and the magnetic vector potential together form a four-vector, so that the two kinds of potential are mixed under Lorentz transformations. Practically, the electric potential is a continuous function in all space, because a spatial derivative of a discontinuous electric potential yields an electric field of impossibly ...

  5. Voltage - Wikipedia

    en.wikipedia.org/wiki/Voltage

    Voltage, also known as (electrical) potential difference, electric pressure, or electric tension is the difference in electric potential between two points. [ 1 ] [ 2 ] In a static electric field , it corresponds to the work needed per unit of charge to move a positive test charge from the first point to the second point.

  6. Dielectric withstand test - Wikipedia

    en.wikipedia.org/wiki/Dielectric_withstand_test

    In electrical engineering, a dielectric withstand test (also pressure test, high potential test, hipot test, or insulation test) is an electrical safety test performed on a component or product to determine the effectiveness of its insulation. The test may be between mutually insulated sections of a part, or energized parts and ground.

  7. FAA was left rudderless after former chief quit post 10 days ...

    www.aol.com/news/elon-musk-bumped-faa-chief...

    Elon Musk pushed Federal Aviation Administration Chief Michael Whitaker from his post just 10 days before the deadly plane and Black Hawk helicopter crash over Washington, DC.

  8. Energy release rate (fracture mechanics) - Wikipedia

    en.wikipedia.org/wiki/Energy_release_rate...

    In fracture mechanics, the energy release rate, , is the rate at which energy is transformed as a material undergoes fracture.Mathematically, the energy release rate is expressed as the decrease in total potential energy per increase in fracture surface area, [1] [2] and is thus expressed in terms of energy per unit area.

  9. When does MLB spring training start? Report dates, schedule ...

    www.aol.com/does-mlb-spring-training-start...

    The start of spring training for the 2025 MLB season is days away. Here's what to know before all 30 Major League Baseball teams return to the field.