ASME Section VIII Division 1 in a B31.3 pipeline

[Mumawalde]

Hello,

I am wondering if areas under B31.3 jurisdiction will allow ASME Section VIII Division 1 vessels or other components in the pipeline with no further analysis on the component beyond that as required by Section VIII.

I know for "unlisted components" B31.3 directs you to ASME Section VIII Division 2.

To put this question in context. I have a pipeline which must comply with ASME B31.3, and I would like to install a short section (~2' - 4' long) of a special component which does not lend itself well to ASME B31.3 analysis, but can be analyzed per ASME Section VIII Section 1 and is not so complicated that it requires Section VIII Division 2. Of course, all B31.3 loadings and other requirements on the Section VIII component will be considered in the design such that it is purpose built to replace this section of piping.

Can this be done without any other special consideration?

Thanks

 

[zdas04]

Seems like an "ASME B21.3 Pipeline" is a contradiction in terms. B31.3 is a plant code and doesn't anticipate changing population density along the line. It also doesn't anticipate crossing highways, rivers, or railroad tracks. As to your specific question, the answer in a pipeline spec is really easy, but I think you are locked into the requirements of Division 2 if you use B31.3.

There is a reason for B31.8 (for example). In the cross country codes like B31.8, they have provisions for "pipeline accessories" like pig launchers and line drips that can be analyzed as pipe as long as all the components of the fabrication have been manufactured to a published standard (mostly that prohibits cylindrical elements having any post-manufacturer longitudinal welds).

David Simpson, PE
MuleShoe Engineering

"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
The plural of anecdote is not "data"

 

[stanweld]

Mumawakle,
ASME Section VIII, Div. 1 vessels are most commonly used in process plants subject to piping designed, constructed, inspected abd tested under B31.3. Vessels are governed by the Juridiction not B31.3. I'm notg sure what you're getting at.

 

[Mumawalde]

I am not really a piping designer, hence my mistake with wording. I did not mean a pipeline in terms of traversing large areas. I meant i am installing my component in to piping within a plant which is compliant to B31.3.

Sorry for the confusion. And, thanks for the clarification.

 

[LittleInch]

Can you describe or name this component?

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

[Mumawalde]

I work for a company that makes some equipment which replaces a small spool in a piping system and provides measurement data for the process fluid. The item is better analyzed by BPVC VIII Div 1 & 2 vs. B31.3 as you can imagine it is not only pipe and piping components.

Our customers are very typically asking for compliance to B31.3 and therefore I am getting push back from our team when I suggest using BPVC stated above. I also suggest we can use B31.3 and analyze the surrounding piping for loads on our product.

I want to get a feeling from others in industry working with the B31.x codes and understand their take on this requirement and how I should proceed.

Assume, for argument sake, that my item can be fully analyzed by VIII Div 1 and/or Div 2. Also assume that B31.3 does not cover all design aspects of my component.

 

[stanweld]

Components like you describe are commonly made to B31.3 or if the component is within the Scope of ASME VIII, Div.1, made to it. You need to further review 300 (c) (4) and 300.1.3 (b) and (d) and Note 2 therein.

 

[Mumawalde]

Thank you for the code references. Those as well as a few others are what I've been referring to. Therefore I believe we are saying the same thing. It's at the discretion of the designer and plant owner as to how to proceed.

Correct?

 

[moltenmetal]

Components designed to ASME VIII-1 are frequently, indeed routinely, installed in the run of B31.3 pipelines. Examples include blind flanges with multiple openings but there are numerous others.

Can the owner reject such a component because it cannot be designed by rules per B31.3? I don't know the ins and outs of the code rules related to jurisdiction well enough to answer that with certainty, but I can tell you that it would be viewed as extremely unreasonable for an owner to reject such a component from my perspective.