is a zoomed in version https://streamable.com/56ttmc
Looks like something very dramatic happened which caused the helicopter to yaw and spin violently to the right which caused the break up of the tail.
The money seeks to be on main gearbox failure and hence may have weakened the gearbox which...
I don't think it is. Those are related to the snapping or breaking of the main rotor shaft. It seems the main rotor came off way after the initial incident with the tail rotor or tail assembly.
It seems that the helicopter was horsing along at about 100 knots and something seems to have...
Plenty of responses here: https://www.eng-tips.com/threads/psv-inlet-piping-dp-question.502295/
For me the answer is simple for the psv valve. It is the pressure from the connection of the psv to the item, vessel or pipe, being protected using the set pressure of the safety valve.
So e.g. your...
I'd just be tempted to do some testing using say 3m of pipe at different slopes with a short section of transparent pipe so you can judge when you get to half full.
Laminar half full open channel flow isn't the easiest thing to calculate reliably and ultimately how close do you want to get to...
I would look at the piping to see if it is deformed and do a wall thickness check to see if its still within limits, check welds for any cracks and probably hydro to the original DP.
As others say, this is a FFS check not a design and construction code which is B31.3. ASME PCC 2 is a better...
As George say, can you operate without a pilot or not? Depends on your venting rate and what you're venting.
So if your flare is really for pollution or environmental reasons (e.g. smell) and not for explosive atmospheres then you really should have a back up fuel supply or you risk creating a...
Helicopter sight seeing inner York crashed with all dead.
This video looks like it was flying at some speed, then something happens, it seems to change orientation very rapidly which causes the whole tail structure to detach, followed shortly by the main rotor blade and part of the gearbox...
Are we talking sloped pipe here or vertical returns.
As you're aware, temperature will play a huge role in viscosity and flow rates.
what sort of viscosities are we talking about here?
How accurate do you need to be.
Assume something like 0.1m/sec? that gives you flow. You are going ot be...
The thing here though is that is is not really what your title said - "small pedestrian bridge".
It's a one carriageway bridge, but this isn't "small". I'm typing this in a room I know is 4m wide and its enormous for a pedestrian bridge. And 16m long presumably bank to bank is a long way. You...
Get any water in jet fuel and you've got serious trouble....
My guess is that for 500m length these lines were poorly coated and had no CP. Might also be coastal and with high salt content in the ground.
Most things I hear about doing this use tik tok.
Spoiler alert - neither me nor I suspect 99% of the users of this platform know how to actually do that.
Usually yes it does. It's not really a code thing, but more a risk/ safety issue about how can you operate without a lit flare without potentially creating a large explosive cloud if the pilot isn't lit.
Loosing the pilot on a flare is usually a huge issue for a plant or rig and hence at least...
Four metres wide??
you have some large individuals crossing this bridge then if you want to make it cheap.
Clear span of 16m?
Kind of limits you to steel of some sort.
Why not just buy a prefabricated one? People like this abound http://crescentmarineaccess.com/commercial.html
The potential...
Pretty sure that so long as you flange the standpipe connection this is outside the boundary mark of a pressure vessel.
The pressure boundary diagram in any of the codes will tell you or describe where a PV finishes and where piping commences.
Hmmm, still weird.
Most company I know gave up flowing trough the trap against a quick opening door on a regular / normal basis decades ago as the risk of leakage was too high or if it did start leaking then you needed to shutdown to repair it.
So is the flow being split between the normal...
I'm glad you've got that fixed.
That errrr arrangement is one of the strangest I've ever seen and I've been out to the FSU.
So your 28" major barrel has a flanged end?
So there is no flow through your new line when any pigging occurs?? I'm working on the basis here that this is flow out of...
You could do worse than have a look around the API website for standards, tutorials and books. https://www.api.org/products-and-services
Many standards are available if you search for them but now out of date.
Subsea everything gets harder and more expensive by a factor of 10.
Also look at UL 142 and API 12F
Or ask a few vendors. Many tanks are not actually designed to any specific code believe it or not.
A lot depends on contents, design pressure, location and similar.
But API 650 may give you what you need, but it may come out with some minimum thicknesses as it...
