NDLI: An Effect of Nozzle Flexibilities/Stiffness on Equipment Nozzle Loads and Local Stresses

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An Effect of Nozzle Flexibilities/Stiffness on Equipment Nozzle Loads and Local Stresses

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An Effect of Nozzle Flexibilities/Stiffness on Equipment Nozzle Loads and Local Stresses

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Sujay, S. Pathre Govindan, K.
Copyright Year	2018
Abstract	The loads on the equipment nozzles are generally generated by the piping stress engineer by doing the stress analysis of entire closed loop systems. Subsequently the nozzle loads are passed on to the engineers of the pressure vessel equipment. The value of the loads which have been worked out for the nozzle mostly depends upon the methods/concept by which the piping stress engineer has evaluated the piping loop. Nozzle flexibility/stiffness is the important parameter in evaluation of various components of nozzle loads. The objective of this paper is to explain the effect/influence of flexibility/stiffness generated from three different methods (Anchor, WRC and Finite element method) on nozzle load evaluation and shell/nozzle junction stresses. WRC297 bulletin [6] gives the reference to nozzle flexibility in the appendix A, example no.3. The work presented in this paper is an attempt to compare the nozzle loads calculated by evaluating the flexibilities/stiffness in various methods. Further an attempt has been made to consolidate the results of junction local stresses obtained by the various methods of stiffness/flexibilities which would result in realistic results and overall code acceptable stresses without the results being either overly conservative or unconservative.
Sponsorship	Pressure Vessels and Piping Division
File Format	PDF
ISBN	9780791851586
DOI	10.1115/PVP2018-84952
Volume Number	Volume 1A: Codes and Standards
Conference Proceedings	ASME 2018 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2018-07-15
Publisher Place	Prague, Czech Republic
Access Restriction	Subscribed
Subject Keyword	Pressure vessels Stress analysis (engineering) Shells Nozzles Stiffness Engineers Closed loop systems Finite element methods Pipes Junctions Stress
Content Type	Text
Resource Type	Article

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