I tried to get them to give us the option of 20, 50 or 100 posts per page, but that fell on deaf ears....
There does seem to be quite a bit of concern about the high level of solar and wind power and at midday that would be peak solar.
Mr 44 - does that website on post 17 give a key to what...
GRP tends to hate stress loading and has in my experience very limited ability to be ductile or accept any excess forces or stresses, especially point loads or stress concentrations. The pipe joint areas in particular are often non homogeneous and result in significant stress concentration due...
Well that's not correct. A single valve is totally able to handle that pressure, you just need to buy the right one.
There are valves which let down thousands of psi in a single valve. But they are not cheap.
Respect the thread here and tell us what process have decided needs to be done.
Yes. Short of the crossing path of a domestic airliner with 65 people on board.
That's the whole point. ATC should never have allowed the helicopter pilot to be hurtling through a night sky on VFR on a crossing path with a civilian air line on a fixed decent into a runway.
The whole set up...
"Necessary "? Not really, but depends on what the ground situation is and whether there are any visual clues that settlement has occurred.
And foundation can settle or subside given poor ground conditions or undermining by e g. water flow
You would have thought it did but clearly the actions of ATC and the pilot were rather less prescriptive. If the aircraft had right of way the helicopter pilot needed to be told to hold or slow down or turn sharp left but the vague can you see it and pass behind whilst giving them night VFR...
They might have landed flights, but the passengers couldn't get through passport control or actually go anywhere once they landed.
That's why heathrow shut. Critical activites were protected, but the rsk of all the other services, fire systems etc etc not working was too high.
The OP is talking about flanges, not pressure vessels.
How is anyone supposed to know if a drilled and tapped hole is actually filled with anything?
r6155 - does it limit the diameter of the tapped hole? that still sounds rather dodgy to me - 25% of the min thickness plus CA??
Which "reports"? There is a NYT article which from what I can see has some questionable comments, but can't see an NTSB one who are the only people with the CVR.
Despite clear errors from the helicopter pilot and, for me, the ATC, the whole set up was at fault in allowing this very hazardous...
"Is it necessary to adjust the shell side design rating to align with the tube side design pressure in the event of a tube failure?"
In theory yes, but not sure how you're going to suddenly increase the MAWP of the shell by a factor of 4.
Why not just substitute in a piece of pipe in place of...
I know of no code or standard that allows for part wall drilling of holes when connected to the fluid retaining part.
B16.5 section 6.11.2 allows for through wall holes and has recommended min thread lengths as tapped holes into flanges, especially blind flanges, is common. Part wall holes are...
Widely reported, the Spanish and Portuguese electricity supply collapsed 28th April after it lost 15GW of supply (about half of its consumption) in 5 seconds. Not surprisingly the interconnected to France the European grid tripped and the grid collapsed.
This M is nearly un heard of and lights...
Operations team are mad to do that. I've never ever heard of anyone doing that before.
You must make a small fortune to allow such a massive waste of money.
Why have they got this authority to spend prob $2M plus in CAPEX and God knows how much in Opex for zero operational requirement??
It's difficult to see from the photo but I think if you look close up you'll find that there are gaps in the weld or in the metal itself of that top ring girder.
Water then drop down through it and down the side of the tank.
See if you can get a close up view from the top of the tank.
Doesn't really make much difference which side of the RO you put ot as there will be a transient in both cases as the valve opens and before steady state conditions exist.
How long this goes on is dependant on valve opening speed, impact of the flashing liquid and length of lines , but is a...
Do you mean the vertical lines?
I strongly suspect these are where they are drain holes in the roof edge and this is where the water drops down, discolours the tank and allows some moss or organism to grow.
What exactly is a "Nitrogen stroke"?
Without knowing more details I would say yes to all of concerns.
IFRs are normally quite lightweight and no floating roof like gas suddenly appearing where liquid should be.
