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Title: Integrity of Pipes and Vessels Subject to Internal Explosions and overview

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United States

Citation Formats

ANTAKI, GEORGE. Integrity of Pipes and Vessels Subject to Internal Explosions and overview. United States: N. p., 2006. Web.
ANTAKI, GEORGE. Integrity of Pipes and Vessels Subject to Internal Explosions and overview. United States.
ANTAKI, GEORGE. Wed . "Integrity of Pipes and Vessels Subject to Internal Explosions and overview". United States. doi:.
title = {Integrity of Pipes and Vessels Subject to Internal Explosions and overview},
author = {ANTAKI, GEORGE},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 19 00:00:00 EDT 2006},
month = {Wed Apr 19 00:00:00 EDT 2006}

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  • In recent years there has been considerable demand for accurate assessment of the influence of defects on reactor structural component integrity. Analyses used must account for the effect of large plastic deformation of low-strength ductile materials. A number of models have been developed for the analysis of reactor coolant piping as well as less ductile plate and piping, but these models have not been verified for the full spectrum of potential materials and configurations encountered in reactor components. The paper presents preliminary test program results and some evaluation of these models, specifically, the flow stress approach and the two-parameter fracturemore » criterion (TPFC). The tests were conducted with annealed Type 304 stainless steel flat tensile specimens containing triangular, rectangular, or part-circular surface flaws, and pressurized pipe specimens with internal or external triangular surface defects.« less
  • Numerical simulations of the macro-deformations of the sealing surfaces (gasketed junctures) of a PWR steel containment vessel's equipment hatch subjected to accident loadings have been performed. Results for the equipment hatch juncture indicate that the rotations of the hatch cover and penetration sleeve must be accounted for when performing leakage analysis because they can affect the compression of the gasket even though the gasket is in a pressure-seated configuration. Results from a leakage analysis indicated that excessive leakage can occur if the surface roughness is high and/or the compression set is high.
  • A unique fluid behavioral model which is applicable to many homogeneous multiphase fluids is used as a generic behavioral model to examine the decompression characteristics of pressurized vessels filled with single component two-phase fluids due to the breakage of connecting pipes. A corresponding analytic solution for the quasi steady state flow of two-phase fluids through pipes with friction is used in conjunction with a conventional vessel decompression methodology to evaluate the vessel pressure history and the mass flow rate efflux.
  • The increasing use of glass reinforced plastic pipes and storage vessels in chemical and process plant has stimulated the need to provide accurate assessment of their behavior under a variety of load applications. The possibility of laminating these components in different ways, taking account of the material anisotropy, gives a design flexibility which is unique to the laminated system over its metallic counterpart. In this paper an analytical approach is outlined for laminated pipes and vessels. This permits the consideration of a variety of alternative layups, which are both symmetric and non-symmetric through the wall. A number of alternative layupsmore » have been considered and methods for obtaining optimum designs investigated. Particular attention is directed to the support regions, where high strain values can cause cracking of the matrix on the inside surface of the vessel. Such local cracking would allow hostile liquid ingress to the glass and could cause premature local failure of an otherwise high integrity component.« less