pveng

The stresses around a nozzle located in a cylindrical shell are not the same in all directions. If a non-round nozzle is oriented in the correct direction, ASME allows us to take advantage of this.

Table UW-12 provides 8 types of welds with appropriate efficiencies to use when differing levels of radiography is applied. Confusion exists when trying to determine if a single welded circ weld in a small vessel is type 1 or type 3. Our answer...

The IID book provides many rows of stress properties for one grade of stainless steel pipe. Line items welded, seamless, low, high and regular carbon and high and low stress. How to choose the correct row?

Registered fittings for Canadian use need to be made from certified materials but if they are not listed in a North American standard then adoption is required. When this is allowed and how it is applied is discussed, along with the pitfalls.

Many older carbon steel vessels do not meet modern code rules for low temperature service. The service history on these vessels is good resulting in an attitude that the current code rules are too restrictive. An alternative explanation is provided.

A generic registration covers a range of possible vessel configurations in one CRN. Without changing the operating conditions, diameter, wall thickness and material, a huge variety of changes can be made to a vessel. These changes are covered in one drawing and calculation set.

This example shows how to create a generic design and get it registered.