This type of fatigue is a phenomenon that should also be taken into account in pipelines, although it is most often associated with aviation technology. It concerns primarily process pipelines with large diameters greater than 250 with very high flow rates...
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Case study
Bathtub siphon as proof of progress in sanitary engineering
I am renovating a 60s apartment in a nice part of Warsaw. Today it was time for the bathroom installations. I wanted to keep the beautiful cast iron bathtub, which is no longer available in stores. To do this I had to rip out the cast iron siphon, which weighed about 7 kg. The PVC siphon, which...
PVC piping stress calculations Part III
Example of a pumping station system with a medium tank. A typical solution with a double pump system. Below I show several elements of the PVC installation.
PVC Piping stress calculations Part II
The example below shows how little is needed to exceed the loads on the nozzles. The installation temperature is 15C, and the design temperature is 30C. Code B31.3. With such a small temperature difference, which caused thermal expansion of only 1 mm, if the nozzles...
Karman’s vortices
Na największej budowie petrochemicznej w Europie - Olefiny III na terenie PKN Orlen musiano zdemontować prawie natychmiast dopiero co postawną kolumnę o wysokości około 80m. Projekt i wykonanie gdzieś w Azji. Artykuł jest tutaj. Pomyślałem sobie, że zrobię symulację...
Graphite purity and flange joint tightness
Ten post został napisany w oparciu o materiały firmy SPETECH. Jakby ktoś kiedyś miał do czynienia z temperaturami powyżej pełzania, to stosowanie uszczelek z grafitu zanieczyszczonym siarką i fosforem, prowadzi do utlenienia się grafitu w powietrzu, więc na zewnątrz...





