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hello, As I announced in my last post we were thinking about the filling of the pipeline section emptied during works. We started filling the line getting one side valve closed and the other side opened. We fed the pipeline's opened side with fuel at a low flow rate when purging air before the...

Hello everyone, Thanks !!! Finally, to carry out the repair work, we isolated the leak point by closing the shut-off valves on either side of it. then, we carried out drilling under load to decompress and then drain the section concerned. The product was recovered by tank trucks. the drain...

Hi, @littleinch thank you.

Good evening, Thanks for all your ideas. Totally agree with you@littleinch WE thinking about the use of several pig. But i heard that as empiric laws 2 pigs must be separated about 100km of pipeline. I will keep you in touch

Good evening everyone, Thank you for your answers. @ littleinch actually there was an act of vandalism that was discovered. it is at Pk 154, 3 km after the shut-off valve. yes the part is weakened. there was first a temporary repair by bandaging with a resistant HP material. the final solution...

Good morning, I hope you're doing well. I am working on a project to replace a 24 m section of a damaged 12'' pipeline. this pipeline is buried and transports diesel. The point to be repaired is located 14 m from a shut-off valve. the other valve is located 30 km from the first. remember that...

Thanks LittleInch,

georgeverghese the max suction pressure is about 1 bar, and tanks connected to pumps are at atmospheric pressure The max elevation is about 13 m The actual density range of transported products is 720- 870 kg/m3 Perreick, I am thinking about how to start the third pump because of...

here PIDhttps://files.engineering.com/getfile.aspx?folder=adb6ec9f-29d3-40ee-9f75-a9cf3fe4c937&file=PID.doc

Hi EveryBody, Thanks @LittleInch, You are right! see below information asked - Design Pressure 104 bars/ Test pressure 127 bars - wall thickness: 12.7 mm - Pipeline grade API 5L grade B - MAOP: 100 bars &Concerning Pumps there are centrifugal and identical and parallel layouts, there are...

Hi everybody, For more détail please note that: - pumps are 100 bars/ 100 m3 - pipeline spec : Api 5L Max P : 100 bars - pumps are started-up directly with a control valve closed being open gradually. The valve is operated manually. - with two pumps running with the valve fully...

Hi, Thanks to all, FMJalink I got it and will do as you said and come back. Pierrick, your links are very helpful

Hi everybody, Thanks for your answers. RVAmeche, thanks. I will contact vendor Edstainless, yes we start pumps one after another using a closed valve being open gradually in a common discharge line. Each pump starts in a stars-triangle mode. This usually cause very high pressure because of...

Hi everybody, We use three centrifugal pumps to transfer refined product through a 12" and 258 km pipeline. For a softer start-up, we want to install a VSD driver. I wonder if there is an empiric formula to determine minimal flowrate in the function of pump rotational speed (like the law of...

hello, I'm very sorry, @Hutrkak thanks for links.

Hello dears, I am looking for API RP 1168,1167,1165 IS there somebody who Can shared them?? Thanks

Hi, dear LittleInch, Thank you for your answer. I already discussed this with a DRA provider for a project of capacity increase but he did not convince me about removal issues (because of the injection in refined products).he told me that there are no standards on the use of these agents. So...

Good morning, Hope you are doing well I work in refined product pipeline operations and I am looking for standards and guide for the use and removal of drag reduction agents. Gilles