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Another example is intrinsically safe or explosion-proof mobile phones used in explosive atmospheres, such as refineries. Intrinsically safe mobile phones must meet special battery design criteria in order to achieve UL, ATEX directive , or IECEx certification for use in explosive atmospheres.
Fieldbus Intrinsically Safe Concept (FISCO), which was first developed by PTB (Physikalisch-Technische Bundesanstalt, the national metrological institute of Germany) as a method to provide higher power to a Fieldbus segment in hazardous areas. The FISCO concept, considers the entire circuit of the Fieldbus segment.
A very simple example is making piping and joints capable of withstanding the maximum possible pressure, if outlets are closed. Limit effects by design, location or transportation of equipment so that the worst possible condition produces less danger, e.g. gravity will take a leak to a safe place, the use of bunds .
An example of this would be the vapor space above the liquid in the top of a tank or drum. The ANSI/NEC classification method consider this environment a Class I, Division 1 area. As a guide for Zone 0, this can be defined as over 1000 hours per year or more than 10% of the time. [3] Zone 1 classified location
In the technical specification 2-WISE [3] the 2-wire intrinsically safe Ethernet is defined. The intrinsic safety barrier is an electronic circuit at each output or input of a switch or instrument. It prevents ignitable electric energy from reaching the connector. The intrinsic safety barrier is separate from the communications circuit (PHY).
Larry Mullen Jr. is opening up about a recent diagnosis. The drummer for U2, 63, revealed in an interview with Times Radio that he's been diagnosed with dyscalculia, which makes it challenging for ...
In order to achieve a given SIL, the device must meet targets for the maximum probability of dangerous failure and a minimum safe failure fraction. The concept of 'dangerous failure' must be rigorously defined for the system in question, normally in the form of requirement constraints whose integrity is verified throughout system development.
Jason Kelce appears to be in the clear after making headlines last month by smashing a person's phone in response to an anti-gay slur.. Penn State University Police announced Tuesday that no ...