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Apart from all the other things wrong with this device, one is that you seem to be using a factor of three for everything, including the compression of your mysterious tube things. If you start at the top side with air at atmospheric pressure and the flexible tube things at a neutral length and...

Something that would be good maybe is how to use all the waste heat conventional systems throw away at 40, 50, 60, 70C using some of the newer chemicals.

Perhaps sit down with himnad break it down into both the stages of the project - concept, design, procurement, construction, safety/risk, commissioning and operation and then also the component parts - boiler, piping, steam motor, generator, control system, electrical components and then discuss...

"and maybe sometimes attended by Shell staff." Hence why they want someone that knows what they re looking at and whether it is being done correctly or not.

A drawing or sketch might help...

Try chapter V or just look in the index....

B31.3 is its own code for welding and inspection, i.e. it's all in there if you look carefully.

Why? Are you designing a pump?

I'm no flange designer here, but I would have thought that what you want to do is have the O ring groove machined in both sections to the correct depth so that when the two metal parts are then clamped together with (much) more force and torque than you are proposing, the O ring is compressed...

I'm pretty sure it's going clockwise, but otherwise totally agree. Apart from all the other issues this will jam it up after about half a turn of the left hand wheel. There's still no way even if you went 1:1 on the chain that this thing will work but that will kill it.

Not necessarily - only that that it doesn't exceed its plimsol line or whatever they call it nowadays - Load lines?

Si-bo, Do you still get the vessel ASME stamped and a U-1? And then a PED certificate.

I forgot to ask what the operating pressure was.... They look like pretty mighty bolts so is this a class 900 or more? As with any repair or plugging, removal of rust and "gunk" can increase the leakage rate a lot or result in a jet of liquid, so shutdown or drain down should be the first...

There's a forum called Engineer business practices and issues and probably better there. Copy your post then delete this one is the easiest way or red flag it yourself and ask for it to be moved. Knowing what type of work you do would probably be useful.

I'm very familiar with a 3 phase separator and this is not one. I agree, the LL interface level control is not going to work.

Generally it's the grey / white haired guy in the corner of the office..... Some bigger companies have formal and informal networks to get this personal in built experience into the heads of those who haven't been there and done it. Sometimes you can access that through organisations and...

Not when there is no inflow it isn't. But I agree it won't work because if there was more green stuff than shown, it would just flow out of the pipe on the left.

You can encapsulate flange pairs, but not a valve

Err sorry, but where exactly is inflow as both pipes just flow out? What are you trying to do? Densities of liquids involved here? Is valve open or closed? Any level control or instrumentation? Give us something more to work on here please.

There are also differences between the types of welded pipe, whether its SAW or ERW. Corrosion can do strange things to welds and HAZs which can't always be predicted. I've seen weld metal eaten away from its parent pipe as though the weld bevel had just been done. Other times it doesn't get as...