Sinking Gas platform

C2 RIBS · 11 February 2013, 18:13

Oil Rig Sinks in Persian Gulf - YouTube

When it happens it take seconds to sink, .

whisper · 11 February 2013, 20:16

Lucky they weren't dragged down or in trouble with all that water disturbance, was it air rising back to the surface?

SimonCh · 13 February 2013, 16:41

Thats terrifying... wonder how many people werent so lucky!?

steco1958 · 13 February 2013, 18:40

They would not get dragged down, unless they were caught on the structure, there is not enough bulk or speed to pull you under.

willk · 13 February 2013, 18:44

They were all OK.

SimonCh · 14 February 2013, 06:41

Quote:

Originally Posted by steco1958

They would not get dragged down, unless they were caught on the structure, there is not enough bulk or speed to pull you under.

Have you not seen titanic!? You can clearly hear jack telling rose she could get pulled under. That's a definite sound source of information!

willk · 14 February 2013, 10:35

Quote:

Originally Posted by SimonCh

That's a definite sound source of information!

Yeah, that was where Twim sourced his info...

Pikey Dave · 18 February 2013, 16:01

It's not being "dragged down" that's the issue. It's the aerated water caused by the escaping air. You become negatively buoyant & sink like a stoon. That's one of the hypothesis put forward for the Bermuda Triangle, large pockets of gas escaping from the sea floor.

steco1958 · 18 February 2013, 17:21

Quote:

Originally Posted by Pikey Dave

It's not being "dragged down" that's the issue. It's the aerated water caused by the escaping air. You become negatively buoyant & sink like a stoon. That's one of the hypothesis put forward for the Bermuda Triangle, large pockets of gas escaping from the sea floor.

It is a good theory, and was attempted to be busted in "Myth Busters" a year or so past.

They did manage a good test to sink a boat, but the amount of bubbles they had to generate were phenominal.

see here:
Curiosity: Sinking A Boat : Video : Discovery Channel

Steve

m chappelow · 18 February 2013, 19:50

The Tees bay admiralty chart makes a note about the dangers of trawling or anchoring near the Ekofisk gas pipe & the catastrophic consequences to a vessels loss of bouyancy or fire should the pipeline be ruptured .

A lot will depend on the depth /pressure /volume released think of how much gas comming out of the end of a broken pipe say a cubic meter per second released at 500 ft depth by the time it reaches the surface volume wise it will have multiplied itself many times over .

Pikey Dave · 18 February 2013, 20:02

Quote:

Originally Posted by steco1958

It is a good theory, and was attempted to be busted in "Myth Busters" a year or so past.

They did manage a good test to sink a boat, but the amount of bubbles they had to generate were phenominal.

see here:
Curiosity: Sinking A Boat : Video : Discovery Channel

Steve

Part of the waste water treatment process (posh name for sewage) is to pass the sh1tty water through aeration lanes which are concrete channels about 5m deep with perforated pipes in the bottom, similar to huge inverted shower heads. The pipes are fed by compressors which blow air through the water to aid microbial digestion. The lanes are heavily guarded to prevent anyone falling in, even lifebouys & lifejackets are useless, it's akin to trying to walk on air. The only way to work around them is either to switch off the air supply, which screws up the process, or to be fully harnessed & tethered.