News

Volume XXV: ASME Pressure Vessels

Mar 06, 2018

In this article, the topics are arranged according to the sequence of manufacture of a pressure vessel under the following assumptions: 1. The dished ends and cones are bought from outside with the material supplied by the vendor under proper certification. 2. All plates and piping materials, including but not limited to pipes, elbows, flanges, studs/ bolts and nuts, gaskets, etc., are bought out items from reputed vendors with proper certification. Read more

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Volume XXIII: ASME Pressure Vessels

Dec 28, 2017

Tubes are the basic components of shell and tube heat exchangers, providing the heat transfer surface between one fluid flowing inside the tube and the other fluid flowing across the outside of the tube. The tubes may be seamless or welded and most commonly made of copper or steel alloys. Other alloys of nickel, titanium, or aluminum may also be required for specific applications. Seamless tubing is produced in an extrusion process; welded tubing is produced by rolling a strip into a cylinder and welding the seam. Welded tubing is usually more economical. Read more

ASME design of pressure vessels

Volume XXII: ASME Pressure Vessels

Dec 13, 2017

Arc welding is one of several fusion processes for joining metals. By the application of intense heat, metal at the joint between two parts is melted and caused to intermix – directly or, more commonly, with an intermediate molten filler metal. Upon cooling and solidification, a metallurgical bond results. Read more

condenser

Volume XXI: ASME Pressure Vessels

Nov 16, 2017

Surface condensers are the most common type used in power plants. They are essentially shell-and-tube heat exchangers, in which the primary heat transfer mechanisms are the condensing of the saturated steam on the outside of the tubes and the forced convection heating of the circulating water inside the tubes. Read more

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Volume XX: ASME Pressure Vessels

Nov 01, 2017

The scope of this presentation is to present basic information and understanding of the ASME code for the design of pressure vessels for the chemical and process industry as applicable in the United States and most of North and South America. Read more

ASME design of pressure vessels

Volume XIX: ASME Pressure Vessels

Sep 07, 2017

Nearly all materials subject to cyclic loads break at stresses much lower than the rupture stresses produced by steady loads. The phenomenon is referred to as fatigue. Fatigue failures are defined as “repeated stress failures” and are results of stress repetition, rather than duration of time. Fatigue failure can also be a result of thermal variation; fatigue failure has occurred in boiler drums due to temperature variations in the shell at the feed water inlet. Read more

pressure vessel and seismic activity

Volume XVIII: ASME Pressure Vessels

Aug 03, 2017

Seismic forces on a vessel result from a sudden erratic vibratory motion of the ground on which the vessel is supported and the vessel response to this motion. The principal factors in the damage to pressure vessels are the intensity and the duration of the earthquake motion. The forces and stresses in pressure vessels during an earthquake are transient, dynamic in nature, and complex. To simplify the design procedure, the vertical component of the earthquake is neglected, and the horizontal component is reduced to equivalent static forces. Read more

Volume XVII:  ASME Pressure Vessels

Volume XVII: ASME Pressure Vessels

Aug 03, 2017

This Section provides requirements for all methods of construction of power, electric and miniature boilers; high temperature water boilers used in stationary service; and power boilers used in locomotive, portable and traction service. Read more

Asme pressure tank chemical design

Volume XVI: ASME Pressure Vessels

Aug 03, 2017

A skirt support consists of a cylindrical or conical shell welded to the bottom head of the vessel. A base ring at the bottom of the skirt transmits the load to the foundations through the anchor bolts. Read more

Volume XV:  ASME Pressure Vessels

Volume XV: ASME Pressure Vessels

May 04, 2017

The User is responsible for defining all applicable loads and conditions acting on the pressure vessel that affect its design. These loads and conditions are specified in the User’s Design Specification. The manufacturer cannot include any loadings or conditions in the design that are not defined in the UDS. Read more

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