Search results for query: *

@LittleInch and @twentytwo, yes that was my opinion too. But i was lacking the right wording. At first i thought OK, making a piping loop hanging from the room with chains and connect everything to flexible connections and you prevent stresses. But thinking of it i got to think you are removing...

Hi, @KevinNZ here you have the same rules as far as i can see, but his comment is that the old design was the same length and had several problems with the motion restrictions. Therefore hanging piping in chains would give it enough freedom. I only are in for the safety control systems of the...

Hi, I have someone here working on a 10 bar /190degC DN300 steam pipe loop. Total length is about 75m for the steamboiler and back. doesn He says that if he will mount the pipe in brackets with chains and makes all the connections flexible he doesn't need a stress or expansion analysis. I...

Thank you I aggree with you, but I was a bit unsure. Point (a) implies that a system that is replaced by a system of the same design and materials doesn't need a analysis since it has shown it is OK. Point (b) Means that is you made a system with more or less the same specs (materials...

@XL83NL, that is what i know too, but then again i come to the same comment as you do. "Whats mostly found in industrial plants is that either the client has specifications which outline (in much more detail) which lines need analysis, or the contractor has its own set of requirement." This...

I tried to find a clearer answer on when it is required to perform a Flex. analysis of piping? EN13480 sets some basic requirements,but it doesn't give a clear guideline for me. It is more or less open for interpretation i think. Any ideas on this?

Exactly, the requirements in the Standard cover the basic situations. However in this case some think that the machine rooms can be seen as one, since there is an open connection of piping. In my opinion you are not able to see what happens in the other room so you need to be sure the safety of...

Not second guessing myself, but in doubt if there are any requirements in EN378 or other related standards that support this.

I have a machineroom existing of 2 floors,(basicly 2 machine rooms). They are only connected by piping coming for one floor to the other through an open hole in the room. At this point there is no Emergency switch for any of the rooms only the compressors have their own switches. Both rooms...

How they did get it so misaligned is not clear to me. It was a standard 2 sided long. weld prepared correctly. The welder clearly started too much to one side and did not correct / notice this. But the tensile test is good over min. required value and RT did not show any problems either. Is...

Is there anyone that can help me on this matter. I have a weld (pressure vessel long. seam)that has misaligned weld beads. I can't find anything on the allowable misalignment of weld beads. The have fusion and no fusion errors are found. Is there anyone that can help me on this question...

Thank you for the reply. It is what i thought then. I agree with your comment. Unfortunately there no general code that brings ASME and EN together and both codes have their weaknesses.

In EN13480 there is a limitation on the use of pad reinforcement (fig. 8.3.6-1) on piping. I have a system that is 100bar and would like to know if ASME B31.3 knows of such a limitation? I tried to find more information on this in the ASME code but was unable to find this. I would therefore...

It's an ASME vessel, therefore i came to the same conclusion as TGS4, but is was a bit in doubt because there were perhaps some other rules i could use. I did know about the ASME B31.3 rules, but unfortunately this isn't the case. Thank you Ben Steward for your tips in this matter it helps a lot...

Hello, I have a flange rated 150lbs that is welded into a vessel 19Bar (max 50degC). This flange has an allowable pressure of 19,5Bars @50degC. Now i would like to know if it is allowed to exeed the pressure rating with 3 bars (to 22 Bars) for a short period of time (say 8 hours),but no more...

@XL83NL You are correct the inspector pointed to the wrong version (2002). I found out that i had the corrected 13480-5 A1 2013 version, but overlooked it. I knew i had seen what you mentioned before, but looked at the wrong edition of 13480, (stupid mistake from my side) [blush]. I pointed him...

Thank you for the replies. For me the word fluid means the fluid phase this can mean both fluid and a mixture of them, but not gasses that are fully in gas phase. The gasses in this piping are not allowed to be in fluid phase in this piping system, since it can cause problems if it is. That is...

Hello, I would like to know if someone can shine a light on the following. EN13480-5 indicates the amount of testing to be performed on piping. par 8.2.1 gives some guidelines on the amount of examination. I have a question on part B of this paragraph. "For piping in material groups 1.1, 1.2...

I found out that ASME B31.3 was different yes. For me working in the EU it is strange to notice that piping hasn't got requirements on the design like i'm used to over here. Cat III piping in PED requires a NOBO. I understand from what you are writing that you need to have an AI involved to...

Could you please explain Your question a bit more, since i can't quite get to what you want to know. It is possible to use other Methods for producing a head, but you have to show that Your design holds to the standard Your building it for.