48″ Gas Pipeline – Trench Excavation, Oman
Saih Nihayda To Al Kamil Gas Transmission Pipeline 2005.
A Big Pipeline Requires Big Machines
If you are constructing a 48″ diameter gas transmission pipeline you need to consider the trench excavation and the high specifications required by the oil and gas companies. It’s not just, “dig a trench and bury the pipeline” the trench has to meet strict requirements as to depth and cover. The pipeline must not be lowered on to rocks etc. The newly welded pipes are treat like babies and have to be put to bed on a layer of sand which is previously screened and all rocks removed. This sand must be at least 150mm deep and in some cases 300mm all around the circumference of the pipe. If the contractor does not own or has not made provision for hiring sand screening plant, then the sand has to be hauled from suppliers many Km away at great cost.
Posted by sidewallfusion Date: Saturday, August 29, 2009
Categories: Pipelines
Tags: Backfill, backfilling, desert, earth cutting, engineering, excavation, excavator, explosives, gas, oil, pipeline construction, pipeline welding, profit margins, sand padding, screening plant, Trenching, V2
A Picture Of Pipeline Construction Oman.
A tie-in on the Sur 48″ diameter gas pipeline, 1998.
48" diameter pipeline.
The picture above I took with a pre-digital Canon Ixus. I found it handy, around the size of a cigarette pack, slipped into the top pocket of my overalls no probs. I was so impressed with it I bought a Canon digital Ixus 6 a 6 mega pixel mini camera which I use constantly, for such a small camera it works marvels. Anyway back to the topic of this post, the tie-in. In pipeline construction the pipes are strung out along the trench and are welded up by what we call the front end welding crews. At road crossings and difficult areas they leave gaps for the tie-in crews to weld at a later time.
Posted by sidewallfusion Date: Wednesday, August 12, 2009
Categories: Pipelines
Tags: pipeline welding, welding, welding inspection
