Search results for query: *

I am involved in testing hydraulic tubing system (design pressure = 3000psi). I have tested two sections individually. I plan to join these two sections with JIC fittings. Can anyone advise if I may do a "service leak test" of the system with pressure provided by the hydraulic system (ie the...

Thanks for these responses. We like the v-cone from a space-saving point of view but have concerns about the robustness of the v-cone configuration in slug flow conditions. We are now looking at the conditioning orifice meter (by Emerson). Regards, DJ Wright

Has anyone out there got experience of using the McCrometer v-cone flow meter for metering wet gas at a wellhead? I have used venturis before but the v-cone flow meter has some apparent advantages (e.g. smaller required space envelope and lower cost). Regards, DJ Wright

Thanks for your thoughts. In my application, gas will be flowing round bends at > 10m/s. Intuitively, it seems to me that bends will not cause accumulation of hydrate crystals in such circumstances. For more details, see similar posts in Chemical Process Engineering. Regards, djwright

Thanks for your advice. My original post was I think slighly misleading. A reinterpretation of the expert's view is that turbulent flow regimes can promote hydrate growth. Typically, a production well has xmas tree, pipework with choke, NRV connected to a manifold by means of a tee. Our flow...

I am looking at wet natural gas piping system. An expert has advised that hydrate crystals have a tendency to accumulate at piping bends (radius < 3d). Intuitively, this does not seem right. Also I have been unable to find any references to the phenomenum on the internet. Has anyone got any...

I am looking at wet natural gas piping system. An expert has advised that hydrate crystals have a tendency to accumulate at piping bends (radius < 3d). Intuitively, this does not seem right. Also I have been unable to find any references to the phenomenum on the internet. Has anyone got any...

I want to calculate increase in pressure in empty vessel (volume is approx. 2m3) due to gas (methane) flow into the vessel at a known rate (approx. 6 standard m3 per minute). Could a kind process engineer out there let me know how to do the calculation? Thanks. djwright

Thanks for helpful posts. In our application we have used gas-sheilded process to weld 60ksi structural steel. Welding environment was offshore / windy but full protection and monitoring was provided. Some &quot;cracking&quot; was reported. Various theories have been put forward (lack of...

Thanks for the responses. I guess my original post wasn't very clear. I have some 316L tubing already in place. So far (1 year in service) it looks OK. I am currently planning to install more. I would prefer to use 316L if its fit for purpose and cheaper than the alternatives suggested...

I want to use 316L stainless steel hydraulic tubing on an offshore platform (field life approx. 10 years) offshore Ireland. I am advised that 316L will corrode and that I must therefore paint it. I don't want to paint because I believe it is not necessary in my application and for obvious cost...

Is flux cored arc welding a good process for site welding of structural steel? Has there been any history of weld cracking associated with this process? Thoughts and experiences would be appreciated.

Thanks for this. Based on my investigations so far I believe that it is essential to ensure that overlay welding procedure provides hardness less than 22HRC / 248HV10 as per NACE MR-01-75. I have contacted ITAG to establish the cause of the problem on Liverpool Bay and await a response. djwright

I believe it was ITAG

Thanks for this. It was the reported BHP failure(s) which had me worried. The use of overlays is so common I assume that the BHP failure is specific to BHP rather than a generic problem. In our sour service application, we have qualified overlay procedures in accordance with ASME IX and NACE...

It is a fairly common practise to overlay carbon steel componenents with alloy 625. Valve seat pockets and flange ring grooves are two applications which I have encountered many times in the petrochemical industry. Recently, I heard about a crack like failure between overlay and carbon steel in...

Thanks for this. You have pointed me in the right direction. Regards, DJ Wright

We have some above ground steel pipework with polypropylene (PP) coating in a petro-chemical plant. Whilst the PP coating has proved to be a very robust for buried pipeline useage, we understand that it will degrade over time in sunlight. We believe we have 2 options: a) Strip PP off and use...

I have got an electro-hydraulic 15ton SWL crane fitted with something called automatic crane protection system. I want to test and use the crane in UK. Do I have to test the crane at 1.1 or 1.25 x SWL? Do I have to think about the structural and mechanical strength separately from hydraulic...

John, Thanks for this. It has been most helpful. Regards, Dave Wright