Lifting lugs must be provided for moving and erecting a pressure vessel. The location of these lugs and the loads that will be applied to…
Category: Mechanical and Structural
Other equipment, such as reboilers or valves, occasionally are connected directly to pressure vessel nozzles without providing separate support. The weight of this equipment results…
Platforms and ladders are frequently supported by direct attachment to a pressure vessel. The normal practice is to provide a sufficient number of clips welded…
Stresses can be developed in a pressure vessel shell due to forces and moments that result from piping connections to nozzles. The magnitude of these…
External loads applied to a pressure vessel are usually of a local nature. WRC Bulletin 107 provides the almost universally accepted methodology for calculating the…
The internal process environment that a pressure vessel is exposed to during operation can frequently cause the material to corrode. Therefore, a corrosion allowance must…
The potential wind and earthquake loadings on a pressure vessel are specific to the geographic location where the vessel is installed. Design parameters for the…
A minimum permissible temperature is required to be displayed on the nameplate of a Division 2 vessel. Unlike the nameplate for a Division 1 vessel,…
Division 2 requires that the design temperature “shall be based upon the actual metal temperature expected under operating conditions,” and should be determined from the…
Hydrotesting a pressure vessel should never be performed at an ambient temperature below the minimum design metal temperature. The high stresses developed during a hydrotest…