Calculate before you build.
When a pipe stress analysis is required and when good engineering practice is enough. How a piping class is built. Why an oversized control valve controls worse than a properly sized one. Articles from sizing and verification – written by the engineers who do the calculations.
Articles on machinery and plant engineering
8 ArticlesExpansion loop or expansion joint?
It is not only the movement that counts – but also where the forces go.
10 min read Read the articlePipe stress analysis or good engineering practice (RAGAGEP)?
Not every pipe needs a complex calculation model. What matters is whether its mechanical safety can be assessed unambiguously with proven rules – or whether the interaction of temperature, weight, supports and external loads makes a pipe stress analysis necessary.
5 min read Read the articlePiping vibration – causes and countermeasures
Allow thermal movement. Limit vibration deliberately.
10 min read Read the articlePiping classes to EN 13480
A piping class is a design check that is carried out only once.
8 min read Read the articlePiping classes to ASME B31.3
Schedule and class are designations – the calculation still has to be done.
8 min read Read the articleCreating a piping class: an example
The calculation is short. The work lies in the decisions before it.
9 min read Read the articleCalculating the Kv value
A control valve is sized for a range, not for a point.
8 min read Read the articleCharacteristic and cavitation
The characteristic in the catalogue is not the characteristic in the plant.
8 min read Read the article
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