4 replies to this topic

[justinbasha]

Hi Guys:

I work at an upstream oil and gas plant in Alberta Canada.   I understand that different specs on different piping requires a spec break on piping to identify the differences in the specification between two different pipe that are joining together.  However, within our plant we have a series of well pads on the same lease as the plant itself.   These pads I would say are within a distance of 500 meters to less than 1 km in distance.  However, I never did understand why these wells would be built under CSA Z662 for pipeline and then converted back to B31.3 prior to entering the process facility.   I was wondering if someone could provide some light on this?   I have asked around and cannot get a clear understanding why you would do this?  Could you just build the plant and pipeline to CSA Z662 or B31.3?    I apologize if this question seems silly.  

 

 

Thanks for you help

 

Justin

  

[Profe]

Hi Justin

 

About your question, please read the next link:

http://www.irss.ca/d...3/2416461_2.pdf

 

I think that will be useful for your understanding.

 

Good luck

Fausto.

Edited by Profe, 15 June 2015 - 01:18 PM.

[Zauberberg]

This is defined by the Codes one has to follow. Different classes and types of materials apply for different segments of production/processing.

[Amin Va]

Please refer to part B in the attached documents.

 

As you see you can have both CSA Z662 and ASME B31.3  for the above ground piping from wellhead to the plant but I know if the total volume of the ASME B31.3 piping is beyond a certain number it needs special registration that's why people prefer to stay with CSA most of the time even though they might use ASME B31.3 materials.

Attached Files

•  Directive077.pdf   464.04KB   17 downloads

Edited by Amin Va, 16 June 2015 - 05:47 PM.

[John Wang]

Z662 - The lease piping between the wellhead and the distribution satellite, as well as the

satellite piping, could be designed and constructed to ASME B31.3, if the operating company chooses to do so, or as directed by the responsible regulatory authority.  

Justin, ABSA would of been involved in design and review stages as well as the Oil company, they have the authority to choose either ASME B31.3 or CSA Z662, they must choose one code and not a mixture of the two. If the piping in question falls under B31.3 than all aspects of B31.3 apply, if they chose Z662 than Z662 would apply, although with in Z662 they may choose clause 14 which uses some testing requirements of B31.3. The main reason for using B31.3

is it covers a much higher range of design temperatures than the Standard, and includes adequate safety factors in the design of pipe wall thickness calculations for internal pressure. If the Enigeer of record chose to classify a section of piping as B31.3 they may do so, as stated by reasons above....

Edited by John Wang, 04 July 2015 - 05:49 PM.