ASME C31.9 pdf free download

ASME C31.9-2017 pdf free download.Building Services Piping ASME Code for Pressure Piping, B31.
900.2 Terms and Definitions
adhesive bond: a union of materials by means of an adhesive.
anchor: a structural attachment device or mechanism that prevents the movement of pipe due to thermal expansion, expansion joint thrust, and other loads.
arc welding: a group of welding processes that produce coalescence of metals by heating them with an arc, %s’ith or without the use of filler metal.
assembly: the joining together of two or more piping components.
automatic welding: welding with equipment that performs the welding operation without constant observation and adjustment of controls by a welding operator. The equipment may or may not perform the loading and unloading of the work.
backing: material placed at the root of a weld joint to support molten weld metal.
backing ring: backing in the form of a ring.
ball or swivel joint: a joint that permits pipe motion by means of rotation.
base metal (material): the metal (material) to be welded, brazed, soldered, or cut.
boiler external piping (BEP): see para. 900.1.2(b).
branch connection: the attachment olthe end of a branch pipe to the run of a main pipe, with or without the use of a fitting. Figure 927.4.6-1 shows typical branch connections that do not use fittings.
braze welding: a joining process that produces coalescence of metals by using a filler metal whose liquidus is above 800°F (427°C) and below the solidus of the base metals. Unlike brazing, the filler metal is not distributed in the joint by capillary attraction.
brazing: a joining process that produces coalescence of metals by heating to a suitable temperature and by using a filler metal whose liquldus Is above 800°F (427°C) and below the solidus of the base metals. The filler metal is distributed by capillary attraction between closely fitted joint surfaces.
brine: a liquid used for the transmission of heat without change of state in cooling systems, which is nonflammable or has a flash point above 150°F (66°C) as determined by the method of ASTM 1)93.
brittle failure: a pipe failure mode that exhibits no material deformation visible to the naked eye, e.g., stretching, elongation, or necking down, in the area of the break
butt joint: a Joint between two members aligned approximately in the same plane.
chilled water: water or an antifreeze solution used as a brine at a supply temperature below 60°F (16°C). coalescence: the growing together or growth into one body of materials being welded, brazed, or soldered.
combustible liquid:a liquid havinga flash point at orabove
100°F (38°C).
consumable insert: backing in the form of filler metal that is melted into the root of the weld and fused with the base metals.
contractor: the entity responsible for fabrication and installation of piping and associated equipment.
crack: a fracture-type imperfection characterized by a sharp tip and high ratio of length and depth to opening displacement.
DN: metric designated pipe size. The number Is the millimeter approximation of the inch pipe size using 1 in. equal to 25 mm. The pipe is still manufactured in inch sizes.
defect an imperfection that by nature or accumulated effect renders a part of the piping unable to meet minimum applicable acceptance standards or specifications. A defect is cause for rejection.
deposited metal: filler metal that has been added during a welding operation.
design pressure: the pressure, equal to or greater than the highest working pressure, used to determine the minimum permissible wall thickness or component rating. See para. 901.2.
design temperature: the temperature equal to or higher than the highest working temperature, used in determining the required wall thickness or component rating. See para. 901.3.
design thickness: the sum of the minimum thicknesses required by the design conditions and corrosion, mechanical, and other allowances,
employer: the owner, manufacturer, fab,cator, contractor, assembler, or installer responsible for the welding, brazing, and NDE performed by his organization, including procedure and performance qualifications.ASME C31.9 pdf download.