Journal of Pressure Vessel Technology: Recent submissions
Now showing items 1901-1920 of 4506
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A Review on Current Status of Alloys 617 and 230 for Gen IV Nuclear Reactor Internals and Heat Exchangers
(The American Society of Mechanical Engineers (ASME), 2009)Alloys 617 and 230 are currently identified as two leading candidate metallic materials in the down selection for applications at temperatures above 760°C in the Gen IV nuclear reactor ... -
Effect of Precompression on Thickness of Pipe During Bending
(The American Society of Mechanical Engineers (ASME), 2009)Straight pipes with a circular cross section are processed into smooth bends by various pipe bending techniques. After bending, the initial circular cross section is deformed with thickness ... -
Impact Mitigation for Buried Structures: Demolition of the New Haven Veterans Memorial Coliseum
(The American Society of Mechanical Engineers (ASME), 2009)We present an overview of the analysis and design of mitigation schemes for buried structures subjected to impact loading, with a focus on the hazard evaluation to underground utilities from ... -
Design Formulas of Blind End Closures for High Pressure Vessels
(The American Society of Mechanical Engineers (ASME), 2009)The available design formulas for flat heads and blind end closures in the ASME Code, Section VIII, Divisions 1 and 2 are based on bending theory and do not apply to the design of thick ... -
Stress Intensity Factors of Various Surface Cracks Inside a Hollow Cylinder Under Steady State Thermal Striping
(The American Society of Mechanical Engineers (ASME), 2009)A thermal stress problem of a long hollow cylinder was considered in this paper. The outer surface of the cylinder was adiabatically insulated, and the inner surface was heated axisymmetrically ... -
Strength Model Uncertainties of Burst, Yielding, and Excessive Bending of Piping
(The American Society of Mechanical Engineers (ASME), 2009)Nuclear safety-piping is designed according to the ASME Boiler and Pressure Vessel Code, Sections III, NB-, NC-, and ND-3600 that use the allowable stress design method (ASD). The potential use ... -
Estimation of Point Vibration Loads From Field Measurements for Industrial Piping
(The American Society of Mechanical Engineers (ASME), 2009)Estimation of point loads on a span for a vibrating pipe has been done with the help of boundary measurement of slope data. The approach is based on the theory of inverse force identification ... -
Investigation of Hydrogen Assisted Cracking in High and Low Strength Steels
(The American Society of Mechanical Engineers (ASME), 2009)Hydrogen assisted cracking (HAC) has been investigated in a high strength 4140 steel and a low strength AISI-SAE grade 1022 steel (supplied by Amoco, Naperville, IL—now BP), charged at −50 ... -
Overload Fracture of Hydrided Region at Simulated Blunt Flaws in Zr-2.5Nb Pressure Tube Material
(The American Society of Mechanical Engineers (ASME), 2009)A crack initiation and growth mechanism known as delayed hydride cracking (DHC) is a concern for Zr-2.5Nb alloy pressure tubes of CANada Deuterium Uranium or CANDU (CANDU is a trademark of ... -
Delayed Hydride Cracking Initiation at Notches in Zr-2.5Nb Alloys
(The American Society of Mechanical Engineers (ASME), 2009)Delayed hydride cracking (DHC) is an important crack initiation and growth mechanism in Zr-2.5Nb alloy pressure tubes of CANDU nuclear reactors. DHC is a repetitive process that involves hydrogen ... -
Reliability Based Design and Assessment for Location-Specific Failure Threats With Application to Natural Gas Pipelines
(The American Society of Mechanical Engineers (ASME), 2009)The acceptance criteria used in reliability based design and assessment are defined as a set of reliability targets (where reliability is defined as 1.0 minus the probability of failure). Because ... -
Reliability of System With Hysteresis Loop Characteristic Subjected to Earthquake Excitations
(The American Society of Mechanical Engineers (ASME), 2009)The estimation of reliability of system subjected to earthquake excitations is an important problem for aseismic design. The reliability of such system should be evaluated in probabilistic manner. ... -
Literature Survey of Gaseous Hydrogen Effects on the Mechanical Properties of Carbon and Low Alloy Steels
(The American Society of Mechanical Engineers (ASME), 2009)A compendium of mechanical properties of carbon and low alloy steels following hydrogen exposure has been assembled from literature sources. The property sets include yield strength, ultimate ... -
A Modeling Approach for Interlinked Feeder Pipes in CANDU® Reactors
(The American Society of Mechanical Engineers (ASME), 2009)The feeder pipes of a typical CANDU® reactor supply each of the 380 fuel channels with coolant and are individually connected to the large bore primary piping. In some designs, the longer ... -
Investigation of Fatigue Strength of Welded Tube-to-Tubesheet Joint
(The American Society of Mechanical Engineers (ASME), 2009)The tube-to-tubesheet joint of heat exchangers is an important aspect in the design and fabrication process. This paper discusses the fatigue strength of welded tube-to-tubesheet joint under a ... -
Assessment Procedure for Multiple Cracklike Flaws in Failure Assessment Diagram (FAD)
(The American Society of Mechanical Engineers (ASME), 2009)Assessment of multiple discrete cracklike flaws is one of the most common problems relating to pressure vessels and piping components. Under the current fitness for service (FFS) rules, such ... -
Interaction of Hydrogen Transport and Material Elastoplasticity in Pipeline Steels
(The American Society of Mechanical Engineers (ASME), 2009)The technology of large scale hydrogen transmission from central production facilities to refueling stations and stationary power sites is at present undeveloped. Among the problems that confront ... -
Flow-Acoustic Coupling in T-Junctions: Effect of T-Junction Geometry
(The American Society of Mechanical Engineers (ASME), 2009)The flow-acoustic coupling mechanism in a T-junction, which combines flows from two branches, forming the “cross-bar” of the T-junction, into one pipe, forming the “stem” of the T-junction, is ... -
The Effects of Filler Metal Transformation Temperature on Residual Stresses in a High Strength Steel Weld
(The American Society of Mechanical Engineers (ASME), 2009)Residual stress in the vicinity of a weld can have a large influence on structural integrity. Here the extent to which the martensite-start temperature of the weld filler metal can be adjusted ... -
Alignment Rule for Non-Aligned Flaws for Fitness-for-Service Evaluations Based on LEFM
(The American Society of Mechanical Engineers (ASME), 2009)If multiple discrete flaws are detected that are in close proximity to one another, alignment rules are used to determine whether the flaws should be treated as nonaligned or as coplanar. ...