Ideas for this Code part were built contemplating the wishes for purposes that come with piping usually present in electrical energy producing stations, in business and institutional crops, geothermal heating structures, and crucial and district heating and cooling systems.
Key alterations to this revision contain the relocation of the foundations for nonmetallic piping and piping covered with nonmetals from a nonmandatory appendix to a compulsory appendix, chosen language from Nonmandatory Appendix V has been moved into the physique of the code in bankruptcy VII, the preheat and put up weld warmth therapy principles were reformatted into tabular shape for readability, and chilly forming principles for creep power superior ferritic steels were integrated into bankruptcy V.
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Additional resources for ASME B31.1-2014
The use of joint efficiency factors for welded pipe is required by this Code. 3 are based on full penetration welds. These factors are included in the allowable stress values given in Mandatory Appendix A. 3 apply to both straight seam and spiral seam welded pipe. 1 Applies to essentially noncorroded piping. Corrosion can sharply decrease cyclic life; therefore, corrosion resistant materials should be considered where a large number of significant stress range cycles is anticipated. The designer is also cautioned that the fatigue life of materials operated at elevated temperatures may be reduced.
B) The minimum required thickness, tm, of a bend, after bending, in its finished form, shall be determined in accordance with eq. 1) Maximum Severity Level for Casting Thickness 41⁄2 in. (114 mm) or Less Severity Level Discontinuity Category Designation ≤1 in. (25 mm) Thick >1 in. (25 mm) Thick For E446 [Castings up to 2 in. (50 mm) Thickness] Discontinuity Category Designation For E186 [Castings 2 in. to 41⁄2 in. (50 mm to 114 mm) Thickness] A 1 2 B 2 3 C Types 1, 2, 3, and 4 1 3 D, E, F, and G None acceptable None acceptable volumetrically examined in accordance with Section V of the ASME Boiler and Pressure Vessel Code.
In general, solders are lead–tin alloys and may contain antimony, bismuth, silver, and other elements. Copyright ASME International Provided by IHS under license with ASME No reproduction or networking permitted without license from IHS 1 Normally, the most significant displacement stress is encountered in the thermal expansion stress range from ambient to the normal operating condition. This stress range is also the stress range usually considered in a flexibility analysis. However, if other significant stress ranges occur, whether they are displacement stress ranges (such as from other thermal expansion or contraction events, or differential support point movements) or sustained stress ranges (such as from cyclic pressure, steam hammer, or earthquake inertia forces), paras.