PNEUMATIC TESTING
The code requires all vessels to be pressure tested before they can be stamped and certified. The standard pressure test is a hydrostatic test, in which the vessel is…
Category: ASME Code, TEMA and API Facts
WELD SYMBOLS
Weld symbols are critical in any ASME code design and technical drawing. They serve as a universal language between the designer, customer, and the welder, ensuring that all requirements for each…
TYPES OF EXPANSION JOINTS
The last newsletter discussed how differential thermal expansion in fixed tubesheet exchangers might require an expansion joint. Two types of expansion joints are commonly used in exchangers: flanged and flued…
Expansion Joints in Heat Exchangers
In order to exchange heat, a heat exchanger always has a hot side and a cold side. The hotter fluid can be on either the shell or tube side, but the…
Confined Gasket Joints
The TEMA standard requires gasket joints in all Class ‘R’ heat exchangers to be confined type. What is a confined gasket joint? These are joints that have a solid metal…
Vessel Components – Vortex breakers
Vortex breakers are simple devices used to prevent the formation of vortices, or swirling patterns, at the drain nozzle in a tank or pressure vessel. If a vortex forms when…
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