Hi!
Is the Pressure Equipment Directive (PED) relevant when designing piping classes, or it's not the case at all (i.e. the piping system that falls under the PED scope designed using a piping class needs to be PED compliant but not the piping class)?
I came across a piping class approved by...
Hello everyone,
I’m wondering if there are any standardized limitations regarding the minimum spacing between two openings on the circumference of a pipe. For example we have a 6 inch pipe and we want to put one opening at 0° and the other at 90°.
Are there any references in ASME, EN, or other...
Regarding to which temperature to use in the calculation my approach matches what you´ve mentioned here and I always try to establish the maximum realistic temperature which also covers the upset cases.
With my question I intended to learn more about how other engineers handle lifting of the...
Hello everyone,
I’m seeking your opinion on managing support lift-off scenarios, particularly in systems where there’s a significant difference between "normal" operating temperature (e.g. 60°C) and design temperature (250°C).
Here’s the situation which I encounter many times when doing stress...
To provide more context, the lines in this project are made of either carbon steel (ASTM A106 Gr. B) or alloy steel (ASTM A335 Gr. P5), with operating temperatures ranging from 280°C to 420°C.
The client also prefers to use pipe clamps instead of pipe shoes because this aligns with their...
Hello everyone,
I’m currently working on a project that involves several piping lines of various sizes (starting from 2" and upwards) with long vertical segments (up to 10m). These segments are routed towards different types of equipment (heat exchangers, filters, etc.) located on a steel...
Hi!
Does anybody know how to determine the minimum yield strength for pipeline materials like e.g. L360 (or API 5L X52) above 60°C.
As per EN 1594, above 60°C min. yield strength should be corrected taking the temperature into consideration.
Hi!
Does anyone have experience with allowable nozzle loads of tanks made of plastic i.e. polyethylene?
I'm trying to find any reference in literature, standards, and norms that could put me on the right track.
I need to do a stress analysis for a couple of DN100 stainless steel pipes...
Actually it has nothing to do with protecting sensitive equipment (MSE).
We have rather high piping loads being transferred to the support structure (8m high frame) foundation e.g. 130-200kN depending on the axial stop location on this long pipe run.
We are talking about 42" flare line located...
Hi!
I have a question regarding the expansion loop design and placement of anchor points. Does it make any sense to place an anchor in the middle of the expansion loop?
The conventional way (and the proper way) is to put anchor on both sides of the loop in order to use it´s inherent...
Hi guys!
Thank you very much for all the replies, it has been a mess for me this last couple of months :(
Anyhow, we are in court now with this issue so I´ll tell you the outcome when there is one.
Of course, the contractor didn´t want to hear anything about mutually trying to come up with a...
Hi!
Short question...does anyone know whether there is a written statement inside EN 13480 (or other EN/DIN norms) norms which excludes which pipes/lines should be hydrotested.
Our subcontractor for piping erection claims that small bore pipes i.e. < DN50 don´t have to be pressure tested. Is...
Hi!
We have a situation of a dispute with a delivery company about pipes we ordered from them.
In the project technical specification, it was clearly specified and underlined that only longitudinally welded pipes are acceptable for use in this project.
After we received their offer, we checked...
Hi!
Does anyone know if there is a standard which defines the length of bolts for EN flange connections i.e., flanges acc. to EN 1092-1 for welding neck flanges (Typ 11) for PN25?
I´m looking for something similar like the ASME B16.5 bolt lengths, but maybe such a thing is not standardized in...
