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ASME B31.3-2016 <br /> balanced piping system: see para. 319.2.2(a). Category D: see fluid service. <br /> base material:the material to be brazed,soldered,welded, Category M: see fluid service. <br /> or otherwise fused. caulked joint:a joint in which suitable material(or materi- <br /> basic allowable stress: see stress terms frequently used. als) is either poured or compressed by the use of tools <br /> bolt design stress: see stress terms frequently used. into the annular space between a bell(or hub)and spigot <br /> bonded joint: a permanent joint in nonmetallic piping (or plain end), thus comprising the joint seal. <br /> made by one of the following methods: chemical plant: an industrial plant for the manufacture <br /> (a) adhesive joint: a joint made by applying an adhe- or processing of chemicals,or of raw materials or inter- <br /> sive to the surfaces to be joined and pressing them mediates for such chemicals. A chemical plant may <br /> together include supporting and service facilities,such as storage, <br /> (b) butt-and-wrapped joint: a joint made by butting utility, and waste treatment units. <br /> together the joining surfaces and wrapping the joint with cold spring: see para. 319.2.4. <br /> plies of reinforcing fabric saturated with resin compression type tube fittings: tube fittings consisting of <br /> (c) heat fusion joint: a joint made by heating the sur- a flareless,mechanical grip connection,including a body, <br /> faces to be joined and pressing them together to achieve nut, and single or dual ferrules. See also para. U306.6. <br /> fusion <br /> (d) hot gas welded joint: a joint made by simultane- connections for external piping:those integral parts of indi- <br /> ously heating the surfaces to be joined and a filler mate- vidual pieces of equipment that are designed for attach- <br /> rial with a stream of hot air or hot inert gas,then pressing ment of external piping. <br /> the surfaces together and applying the filler material to consumable insert: preplaced filler metal that is com- <br /> achieve fusion pletely fused into the root of the joint and becomes part <br /> (e) solvent cemented joint: a joint made by using a sol- of the weld. <br /> vent cement to soften the surfaces to be joined and press- damaging to human tissues:for the purposes of this Code, <br /> ing them together this phrase describes a fluid service in which exposure <br /> (f) electrofusion joint: a joint made by heating the sur- to the fluid,caused by leakage under expected operating <br /> faces to be joined using an electrical resistance wire coil conditions, can harm skin, eyes, or exposed mucous <br /> that remains embedded in the joint. membranes so that irreversible damage may result <br /> bonder: one who performs a manual or semiautomatic unless prompt restorative measures are taken. (Restor- <br /> bonding operation. ative measures may include flushing with water,admin- <br /> bonding operator:one who operates machine or automatic istration of antidotes, or medication.) <br /> bonding equipment. design minimum temperature: see para. 301.3.1. <br /> bonding procedure: the detailed methods and practices design pressure: see para. 301.2. <br /> involved in the production of a bonded joint. <br /> design temperature: see para. 301.3. <br /> bonding procedure specification (BPS): the document that <br /> lists the parameters to be used in the construction of designer: the person or organization in responsible <br /> bonded joints in accordance with the requirements of charge of the engineering design. <br /> this Code. displacement stress range: see para. 319.2.3. <br /> borescopic examination: a visual examination aided by a elements: see piping elements. <br /> mechanical or electromechanical device to examine the engineering design: the detailed design governing a pip- <br /> inside diameter of inaccessible welds. ing system, developed from process and mechanical <br /> branch connection fitting: an integrally reinforced fitting requirements, conforming to Code requirements, and <br /> welded to a run pipe and connected to a branch pipe including all necessary specifications, drawings, and <br /> by a buttwelding,socket welding,threaded, or flanged supporting documents. <br /> joint; includes a branch outlet fitting conforming to equipment connection: see connections for external piping. <br /> MSS SP-97. <br /> brazing: a metal joining process wherein coalescence is erection: the complete installation of a piping system in <br /> filler metal having a the locations and on the supports designated by the <br /> produced by use of a nonferrous <br /> melting point above 427°C (8000F),but lower than that engineering design including any field assembly,fabri- <br /> of the base metals being joined.The filler metal is distrib- cation, examination,inspection, and testing of the sys- <br /> uted between the closely fitted surfaces of the joint by tem as required by this Code. <br /> capillary attraction. examination, examiner: see paras. 341.1 and 341.2. <br /> butt joint:a joint between two members aligned approxi- examination,types of.• see para. 344.1.3 for the following: <br /> mately in the same plane. (a) 100% examination <br />