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ASME B31.3-2016 <br /> K301.3.2 Uninsulated Components. The fluid tem- within the range of temperatures for which stresses are <br /> perature shall be used as the component temperature. shown in Table K-1, modified as applicable by other <br /> K301.5 Dynamic Effects rules of this Chapter. <br /> (b) Piping components that do not have allowable <br /> Paragraph 301.5 applies with the exception of stresses or pressure—temperature ratings shall be quali- <br /> para. 301.5.4. fied for pressure design as required by para. K304.7.2. <br /> K301.5.4 Vibration. Suitable dynamic analysis shall K302.2.3 Unlisted Components <br /> be made where necessary, to avoid or minimize condi- (a) Piping components not listed in Table K326.1 or <br /> tions that lead to detrimental vibration, pulsation, or Table K-1,but that conform to a published specification <br /> resonance effects in the piping. or standard, may be used subject to the following <br /> requirements: <br /> K302 DESIGN CRITERIA (1) The designer shall determine that composition, <br /> mechanical properties, method of manufacture, and <br /> K302.1 General quality control are comparable to the corresponding <br /> In para.K302,pressure—temperature ratings,stress cri- characteristics of listed components. <br /> teria, design allowances, and minimum design values (2) Pressure design shall be verified in accordance <br /> are stated,and permissible variations of these factors as with para.K304,including the fatigue analysis required <br /> applied to design of high pressure piping systems are by para. K304.8. <br /> formulated. (b) Other unlisted components shall be qualified for <br /> The designer shall be satisfied as to the adequacy of pressure design as required by para. K304.7.2. <br /> the design,and of materials and their manufacture,con- K302.2.4 Allowance for Pressure and Temperature <br /> sidering at least the following: Variations. Variations in pressure above the design <br /> (a) tensile, compressive, flexural, and shear strength pressure at the coincident temperature,except for accu- <br /> at design temperature mulation during pressure relieving(see para. K322.6.3), <br /> (b) fatigue strength are not permitted for any piping system. <br /> (C design stress and its basis <br /> (d) ductility and toughness K302.2.5 Ratings at Junction of Different Services. <br /> (e) possible deterioration of mechanical properties in Paragraph 302.2.5 applies. <br /> service K302.3 Allowable Stresses and Other Design Limits <br /> (f) thermal properties <br /> (g) temperature limits K302.3.1 General. The allowable stresses defined <br /> (h) resistance to corrosion and erosion below shall be used in design calculations unless modi- <br /> (i) fabrication methods fied by other provisions of this Chapter. <br /> (j) examination and testing methods (a) Tension. Allowable stresses in tension for use in <br /> W hydrostatic test conditions design in accordance with this Chapter are listed in <br /> (l) bore imperfections Table K-1,except that maximum allowable stress values <br /> and design stress intensity values for bolting, respec- <br /> K302.2 Pressure—Temperature Design Criteria tively, are listed in the BPV Code, Section II, Part D, <br /> K302.2.1 Listed Components Having Established Tables 3 and 4. <br /> The tabulated stress values in Table K-1 are grouped <br /> Ratings. Pressure—temperature ratings for certain pip- by materials and product form and are for stated temper- <br /> ing components have been established and are contained atures up to the limit provided for the materials in <br /> in some of the standards in Table K326.1.Unless limited para. K323.2.1. Straight line interpolation between tem- <br /> elsewhere in this Chapter, those ratings are acceptable peratures to determine the allowable stress for a specific <br /> for design pressures and temperatures under this design temperature is permissible. Extrapolation is not <br /> Chapter.With the owner's approval,the rules and limits permitted. <br /> of this Chapter may be used to extend the pressure— <br /> t (b) Shear and Bearing. Allowable stress in shear shall <br /> temperature ratings of a component beyond the ratings <br /> be 0.80 times the allowable stress in tension tabulated <br /> of the listed standard,but not beyond the limits stated in Table K-1. Allowable stress in bearing shall be 1.60 <br /> in para. K323.2. times the allowable stress in tension. <br /> K302.2.2 Listed Components Not Having Specific (c) Compression. Allowable stress in compression <br /> Ratings shall be no greater than the allowable stress in tension <br /> (a) Piping components for which design stresses have tabulated in Table K-1. Consideration shall be given to <br /> been developed in accordance with para. K302.3, but structural stability. <br /> that do not have specific pressure—temperature ratings, (d) Fatigue. Allowable values of stress amplitude, <br /> shall be rated by rules for pressure design in para.K304, which are provided as a function of design life in the <br />