ASME SECTION VI 2013 Recommended Rules for the Care and by American Society of Mechanical Engineers

By American Society of Mechanical Engineers

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Smokebox: an external compartment on a boiler to catch unburned products of combustion. try cock: see gage cock. spalling: the breaking off of the surface of refractory material as a result of internal stresses. tube: a hollow cylinder for conveying fluids. spun ends: the ends of hollow members closed by rolling while heated. tube cleaner: a device for cleaning tubes by brushing, hammering, or by rotating cutters. stay: a tensile stress member to hold material or other members rigidly in position.

Calorific value: the number of heat units liberated per unit of quantity of a fuel burned in a calorimeter under prescribed conditions. combustible loss: the loss representing the unliberated thermal energy occasioned by failure to oxidize completely some of the combustible matter in the fuel. calorimeter: apparatus for determining the calorific value of a fuel. combustion: the rapid chemical combination of oxygen with the combustible elements of a fuel resulting in the production of heat. carbon: the element that is the principal combustible constituent of all fuels.

Reciprocating grate: a grate element that has reciprocating motion, usually for the purpose of fuel agitation. overfire draft: air pressure that exists in the furnace of a boiler when the main flame occurs. refinery gas: the commercially noncondensable gas resulting from fractional distillation of crude oil, or the cracking of crude oil or petroleum distillates. Refinery gas is either burned at the refineries or supplied for mixing with city gas. oxidation: chemical combination with oxygen. oxidizing atmosphere: an atmosphere that tends to promote the oxidation of immersed materials.

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