Fixture, definition

Since the foregoing tests were carried out at -identical conditions of compn and temp, and in a standard test fixture, the burning times serve as a means of checking the relative fineness of thea powdered tungsten fuels. The rapid burning times indicate that both M-10 and M-20 are very fine. Also, the M-10 is definitely finer than M-20, as shown by the difference in burning times... 

Anyone who has remodeled a house is very aware of this. Consider the example of a man who builds a house and doesn t have the capital to include a second bath. He realizes, however, that when his children become teen-agers he will definitely need another one. Therefore, if he is wise he will design the house so that there is space for another bath. He will also make sure that the hot and cold water lines, a drain, and a stack that can service the second bath are installed. These provisions for the future will only increase the cost of the house slightly. Then five years later when he installs the second bath he merely needs to buy the fixtures and attach them to the installed plumbing. 

By definition, the particles of gases are far apart and gases tend to fill their container, even if the container is a laboratory room. Tanks of compressed gas come from the supplier capped to prevent the gas from escaping. In the lab a chemist or technician attaches a regulator to the tank and secures the tank to a stable fixture. 

Scope and Definitions. This guidehne is applicable to aU processes, systems, manufacturing equipment, and test fixtures regardless of size or... 

Most laboratories do not represent hazardous locations in the context of requiring special electrical wiring and fixtures, although there may be individual equipment items which may need to be treated as such. The classification of a facility as hazardous in a regulatory context, depends upon the type of materials employed in the facility and whether flammable fumes or gases, electrically conducting materials, or explosive dusts are present in the air within these facilities in the normal course of routine activities or only sporadically due to some special circumstance. Explosion proof wiring and fixtures are substantially more expensive than ordinary equivalents and should be used only if there are no acceptable alternatives. Where the need does exist, however, they definitely should be used. 

OSHA says that an employer must determine if the booth is a hazardous location per 1910.307. The definitions for the hazardous locations are found at 1910.399. If it is determined that the booth is a hazardous location, all lighting and other electrical devices must be intrinsically safe for that location, and be so marked. According the NFPA33, Standard for Spray Application Using Flammable or Combustible Materials, non-intrinsically safe fixtures must be ate least 10 feet vertically and 20 feet horizontally from a Category I or II hazard. 

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