... of the stress through the wall thickness can vary markedly depending on the weld processing parameters, nozzle and pipe geometries, among other factors. Hence, understanding the residual stress distribution is important in order to evaluate the reliability of pipe and nozzle welded joints. This paper represents...

... had been located by ultrasonic testing in various pressurizer nozzle dissimilar metal welds (DMW) at nuclear power plants. In order to evaluate the crack propagation, it is required to calculate the stress distribution including weld residual stress and operational stress through the wall thickness...

... analysis is reported for 500 MWe sodium cooled fast reactor (SFR) in this paper. The material of construction is modified 9 Cr-1 Mo and the critical location is the shell nozzle junction. The initial surface crack is postulated at the critical locations at the shell nozzle junction. The critical crack...

... improvement in its acceleration capability. To obtain the most effective cutting performance, a high level of hydraulic power through large nozzles should therefore be utilized. Additionally, recent advancements in cutting path control software have proven to significantly decreasing the total “time...

...Wenchun Jiang; Z. B. Wang; J. M. Gong; G. C. Li This paper presents a study of the residual stress in the welding connection between hydrogen nozzle and spherical head in a hydrofining reactor. A sequential coupling finite element program is developed to analyze the residual stress in nozzle...

... and the plane of consideration, is used in evaluating various numerical integrals. The procedure is demonstrated through application to a typical shell nozzle junction. finite element analysis least squares approximations nozzles shells (structures) yield stress stress category least squares fit...

...B. H. Wu; Z. F. Sang; G. E. O. Widera The objective of this paper is to determine the plastic limit moment for cylindrical vessels with a nozzle under in-plane moment loading. Three full scale test models with different d / D ratios were fabricated for the experiment. A three-dimensional nonlinear...

... force due to flowing fluid t run time Δ t time step defined in CFX k spring spring stiffness F 0 predeterminated force for the setting pressure computational fluid dynamics nozzles pressure vessels safety devices springs...

...Alexey Velikorodny; Graham Duck; Peter Oshkai Digital particle image velocimetry was applied to investigate turbulent flow of air between a flexible wall and a rigid surface containing a backward-facing step (BFS). The inflow condition corresponded to a Coanda jet issuing from a nozzle...

.... Des., 154, 231–238 ; 1996, “A Reinforcement Design Method Based on Analysis of Large Openings in Cylindrical Pressure Vessels,” ASME J. Pressure Vessel Technol., 118, 502–506 ; 1999, “Analytical Solution for Cylindrical Thin Shells With Normally Intersecting Nozzles Due to External Moments on the Ends...

...Ming-De Xue; Qing-Hai Du; Keh-Chih Hwang; Zhi-Hai Xiang A universal design method for pressurized cylindrical shells with attached nozzles subjected to external forces (moments) and internal pressure are presented, based on theoretical stress analysis. The applicable ranges of the presented design...

...L. Xue; G. E. O. Widera; Z. Sang In an earlier paper ( 2009, “Burst Pressure of Pressurized Cylinders With the Hillside Nozzle,” ASME J. Pressure Vessel Technol., 131(4), p. 041204 ), an elastic-plastic large deflection analysis method was used to determine the burst pressure and fracture location...

...D. Rudland; A. Csontos; T. Zhang; G. Wilkowski At the end of 2006, defects were identified using ultrasonic testing in three of the pressurizer nozzle dissimilar metal (DM) welds at the Wolf Creek nuclear power plant. Understanding welding residual stress is important in the evaluation of why...

...Cunjiang Cheng; G. E. Otto Widera In this study, the determination of the burst pressure of a series of cylinder-cylinder intersections representing vessels of diameter D and wall thickness T , and nozzles of diameter d and wall thickness t subjected to short-term dynamic loading is investigated...

... where damage will be found. The studied steam mixer, made of 10CrMo 9-10 steel (P22), has after 100,000 h of service developed severe creep damage in several saddle point positions adjacent to nozzle welds. FE-simulation of long term behavior of this structure has been performed taking developing...

...P. Gao; N. Li; Z. F. Sang; G. E. O. Widera The objective of this work is to study the elastic stress distribution, deformation characteristic, and stress concentration factor (SCF) of a cylindrical vessel with lateral nozzle. Three full scale vessels under internal pressure with different geometric...

...J. Fang; N. Li; Z. F. Sang; G. E. O. Widera The objective of this paper is to investigate the elastic strength of cylindrical vessels with hillside nozzle under out-of-plane moment on the nozzle. A total of 5 model vessels with different hillside nozzle angles and loading directions were fabricated...

...H. F. Wang; Z. F. Sang; L. P. Xue; G. E. O. Widera The burst pressure of cylinders with hillside nozzle is determined using both experimental and finite element analysis (FEA) approaches. Three full-scale test models with different angles of the hillside nozzle were designed and fabricated...

.... Increasing the pressure while keeping the jet diameter fixed will increase both the power and the power density. This will result in increased cutting speed and less taper. The operating cost of the abrasive waterjets process consists mainly of the costs of abrasives, nozzle wear, utility, and maintenance...

... is connected to each cold leg pipe between the main coolant pump and the reactor vessel during the SI operation, which begins on the receipt of a loss of coolant accident signal. In normal reactor power operation mode, the wall of SI line nozzle maintains at high temperature because it is the junction part...