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In electrical and safety engineering, hazardous locations (HazLoc, pronounced haz·lōk) are places where fire or explosion hazards may exist. Sources of such hazards include gases, vapors, dust, fibers, and flyings, which are combustible or flammable. Electrical equipment installed in such locations can provide an ignition source, due to ...
The U.S. state of Arkansas first required its residents to register their motor vehicles and display license plates in 1911. Prior to 1911, plates were issued by cities. As of 2022, plates are issued by the Arkansas Department of Finance and Administration. Only rear plates have been required since 1944.
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, [ 1][ 2] with several later modifications by Köppen, notably in 1918 and 1936. [ 3][ 4] Later, German climatologist Rudolf Geiger (1894–1981 ...
To investigate the roll that fast-forwarding and switching videos has in boredom, researchers performed two experiments on about 1,200 people, according to the study published Monday in the ...
A number of Federal Reserve officials saw a case to reduce interest rates immediately in July, according to minutes released on Wednesday from that month's policy meeting. While each participant ...
He also failed to obey a command while working for another sheriff’s office in Illinois and was told he needed “high stress decision making classes,” the agency’s documents reveal.
ATEX Directive 2014/34/EU was published on 29 March 2014, by the European Parliament. It refers to the harmonization of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres. Regarding ATEX 99/92/EC Directive, the requirement is that Employers must classify areas where ...
In electric power systems and industrial automation, ANSI Device Numbers can be used to identify equipment and devices in a system such as relays, circuit breakers, or instruments. The device numbers are enumerated in ANSI / IEEE Standard C37.2 Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations .