Pipeline Crossing
Pipeline Crossing
(OP)
I am looking for any reference material that might help in doing analysis of pipeline crossings. We are putting in a pipeline that is about half a mile and it has 8 crossings. Any papers or books would be appreciated.





RE: Pipeline Crossing
RE: Pipeline Crossing
RE: Pipeline Crossing
RE: Pipeline Crossing
Will the other pipelines be lowered?
US Gulf or Mexico?
I've constructed cement bag pyramid structures to maintain separation.
http://virtualpipeline.spaces.msn.com
RE: Pipeline Crossing
Watch the spacing between supports so it doesnt;t exceed the new pipeline'sa maximum unsupported span length. I believe VERITEC E305 (I don't have a coipyu with me), require the design to provide a minimum safety factor of 3.0 against bearing failure of the soil.
Obviouskly, it is preferable to have the larger (heavier) pipeline to be crossed by the smaller line so that any differential settlement, whyich would be expected of the heavier line, would tend to seperate the pipelines further.
Seapartion is also required to isolate the CP systems of the two lines. Generally a final separation (after settlement) of 0.5M is recommended as a minimum.
As far as analysis, the new pipeline stresses and stress combinations that rewsulet from all load factors (weight, buoyancy, thermal effects, pressure bending, residual tension, environmental forces, etc,) are available in the applicable ASME Code (B31.4 or B31.8). Some comapny;'s have al ittle more stringent requirements for hoop, longitudinal and combined stresses at various stages (installation, testing, and ioperations).
Greg Lamberson, BS, MBA
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
RE: Pipeline Crossing
Narendranath R
Pipeline engineering is made easy with state of the art computer software, visit www.narendranath.itgo.com.
RE: Pipeline Crossing
http://virtualpipeline.spaces.msn.com
RE: Pipeline Crossing
Narendranath R
Pipeline engineering is made easy with state of the art computer software, visit www.narendranath.itgo.com.
RE: Pipeline Crossing
Its more expensive to fix it than to do it right the first time.
http://virtualpipeline.spaces.msn.com