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  2. Trapped-key interlocking - Wikipedia

    en.wikipedia.org/wiki/Trapped-key_interlocking

    The sliding bolt, when extended, mechanically prevents operation of a switch, valve, gate, or other device. Many variations exist, with different shapes of interlock bolt and multiple lock cylinders on an interlock. A significant feature of the interlock is that the key is held or trapped in one position of the lock.

  3. MSC Industrial Direct - Wikipedia

    en.wikipedia.org/wiki/MSC_Industrial_Direct

    MSC Industrial Direct Co., Inc (MSC), through its subsidiaries, primarily MSC Industrial Supply Co., is one of the largest industrial equipment distributors in the United States, [1] distributing more than 1.5 million metalworking and other industrial products.

  4. Interlock (engineering) - Wikipedia

    en.wikipedia.org/wiki/Interlock_(engineering)

    Trapped key interlock switchgear door. An interlock is a feature that makes the state of two mechanisms or functions mutually dependent. It may consist of any electrical or mechanical devices, or systems. In most applications, an interlock is used to help prevent any damage to the machine or to the operator handling the machine.

  5. Process plant shutdown systems - Wikipedia

    en.wikipedia.org/wiki/Process_plant_shutdown_systems

    Protection through the use of safety layers. A process plant shutdown system is a functional safety countermeasure crucial in any hazardous process plant such as oil and gas production plants and oil refineries. The concept also applies to non-process facilities such as nuclear plants. These systems are used to protect people, assets, and the ...

  6. Interlocking - Wikipedia

    en.wikipedia.org/wiki/Interlocking

    Interlocking is a safety measure designed to prevent signals and points/switches from being changed in an improper sequence. For example, interlocking would prevent a signal from being changed to indicate a diverging route, unless the corresponding points/switches had been changed first.

  7. IEC 60204 - Wikipedia

    en.wikipedia.org/wiki/IEC_60204

    IEC 60204-1 / EN 60204 Safety of machinery – Electrical equipment of machines – Part 1: General requirements This is a standard published by the International Electrotechnical Commission (IEC), published in parallel by CENELEC ( European Committee for Electrotechnical Standardization ).