ASME B31.9:2004 pdf download

12-16-2022 comment

ASME B31.9:2004 pdf download Building Services Piping
9002 Definitions
adhesive bond: a union of materials by means of anadhesive.
anchor: a structural attachment device or mechanism thatprevents the movement of pipe due to thermal expansion, expansion joint thrust, and other loads.
arc welding: a group of welding processes that producecoalescence of metals by heating them with an arc withor without the use of filler metal.
assembly: the joining together of two or more pipingcomponents.
automatic welding: welding with equipment that performs the welding operation without constant observation and adjustment of controls by a welding operatorThe equipment may or may not perform the loadingand unloading of the work.
backing: material placed at the root of a weld joint tosupport molten weld metal.
backing ring: backing in the form of a ring.
ball or stuivel joint: a joint that permits pipe motion bymeans of rotation.
base metal (material): the metal (material) to be weldedbrazed, soldered, or cut.
boiler external piping (BEP): See para. 900.1.2(b).
branch connection: the attachment of the end of a branchpipe to the run of a main pipe, with or without the useof a fitting. Figure 927.4.6 shows typical branch connections which do not use fittings
braze welding: ajoining process that produces coalescenceof metals by using a filler metal whose liquidus is above800°F(427°C) and below the solidus of the base metalsUnlike brazing, the filler metal is nof distributed in theoint by capillary attraction.
brazing: a joining process that produces coalescence ofmetals by heating to a suitable temperature and by usinga filler metal whose liquidus is above 800F(427°C) andbelow the solidus of the base metals. The filler metal isdistributed by capillary attraction between closely fittedjoint surfaces.
brine: a liquid used for the transmission of heat withoutchange of state in cooling systems, which is nonflammable or has a flash point above 150°F(66C) as determinedby the method of ASTM D 93.
brittle failure: a pipe failure mode that exhibits no material deformation isible to the naked eye, i.e., stretchingelongation, or necking down, in the area of the break
combustible liquid: a liquid having a flash point at orabove 100°F(38°C).
consumable insert: backing in the form of filler metalwhich is melted into the root of the weld and fused withthe base metals.
contractor: the entity responsible for fabrication andinstallation of piping and associated equipment
crack: a fracture-type imperfection characterized by asharp tip and high ratio of length and depth to openingdisplacement.
DN: metric designated pipe size. The number is themillimeter approximation of the inch pipe size usingone inch equal to 25 mm The pipe is still manufacturedin inch sizes.
defect: an imperfection which by nature or accumulatedeffect renders a part of the piping unable to meet minimum applicable acceptance standards or specificationsA defect is cause for rejection.
deposited metal: filler metal that has been added duringa welding operation.
design pressure: the pressure, equal to or greater thanthe highest working pressure, used to determine theminimum permissible wall thickness or component rat-ing.See para.901.2
design femperafure: the temperature equal to or higherthan the highest working temperature,used indetermining the required wall thickness or componentrating. See para.901.3.
design fhickness: the sum of the minimum thicknessesrequired by the design conditions and corrosionmechanical, and other allowances.
emplouer: the owner,manufacturer, fabricator, contractorassembler, or installer responsible for the welding, brazing, and NDE performed by his organization, includingprocedure and performance qualifications
engineer: the engineer as agent of the owner is the partyresponsible for design of piping systems to meetoperating and safety standards.
engineering design: the detailed design for a piping installation,developed from the building systems requirements and conforming to Code requirements, includingnecessary drawings and specifications.

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