ASME B73.1:2012 pdf free download

ASME B73.1:2012 pdf free download.Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process.
4.2 Additional Definitions
auxiliary piping: includes all piping connected to the pump, seal chamber, packing box, or seal piping plan. excluding the main piping connected at the pump suction and discharge flanges. Auxiliary piping includes piping, tubing, and all attached components, SUCh as valves, instrumentation, coolers, and seal reservoirs.
?ionpressure-coflfaininc nonwt’t fed parts: pump parts that do not contain or retain pressure and are not wetted by the pumped fluid.
wnprrssure-contawrng wetted parts: pump parts that do not contain or retain pressure hut are wetted by the pumped fluid (e.g., wear ring).
pressure-containing wetted parts: pump parts that contain pressure and are wetted by the pumped fluid (e.g., casing, sealing cover).
pressure-retaining nonwetted parts: pump parts that retain pressure but are not wetted by the pumped fluid (e.g.. adapter, fasteners).
sealing cover: refers to seal chamber, universal cover, or packing box.
supplier: manufacturer or manufacturer’s representative that supplies the etluipment.
5 DESIGN AND CONSTRUCTION FEATURES FOR METALLIC PUMPS
Section 6 contains the design and construction features that are unique for thermoplastic and thermoset polymer pumps.
5.1 Pressure and Temperature Limits
5.1.1 Pressure Limits. Pressure limitations shall be stated by the pump manufacturer. See para. 5.8.3 for auxiliary piping.
5.1.1.1 The design pressure oF the casing, sealing cover, and gland shall be at least as great as the pressure— temperature rating of ASME B16.5 Class 150 or ASME B16,42 Class 150 flanges for the material used.
5.1.1.2 The design pressure of jackets shall be at least 100 psig (689 kPa gage) at 340°F (171°C). Heating jackets may be required for jacket temperatures to 500°F (260°C) with a reduction in pressure corresponding to the reduction in yield strength of the jacket material.
5.1.1.3 Casing, sealing cover, gland, and jackets shall be designed to withstand a hydrostatic test at 1.5 times the maximum design pressure for the particular component and material of construction used (see para. 7.2.1.1).
5.1.2 Temperature Limits. Temperature limitations shall be stated by the pump manufacturer. Pumps should be available for temperatures up to 500°F (260°C). Jacketing and other modifications may be required to meet the operating temperature. See para. 5.8.3 for auxiliary piping.
5.2 Flanges
5.2.1 General. Suction and discharge nozzles shall be flanged. Range drilling, facing, and minimum thickness shall conform to ASME B16.5 Class 150 or ASME B 16.42 Class 150 standards, except that marking requirements are not applicable and the maximum acceptable tolerance on parallelism of the back of the flange shall be 3 deg. Flanges shall be fiat-laced at the full raised-lace thickness (minimum) called for in the ASME standards for the material of construction. Raised-face flanges may be offered as an option. Bolt boles shall straddle the horizontal and vertical centerlines. Bolt holes may be tapped when adequate space for nuts is not available behind flanges, as noted in Table 1-1. Through bolt holes are preferred. When tapped holes are supplied, they shall be noted on the outline drawing.