[충격]ì•,,수ë¼ìž¥ìœ¼ë¡œ 변한 ì,,±ë™ ë²,,스íë°œ ì,¬ê³ 순ê°,, CCTV (http://www.youtube.com/watch?v=jOf69xHnyrk#normal)
Holy crap! :o
Great to see people getting off the bus!
WOW, i cant believe the guy on the bike didn't shit bricks and dump it.
he would have had there been traffic coming the other way!
Slightly different camera angle.
í–‰ë‹¹ë™ ë²,,스íë°œì,¬ê³ 당시CCTV (http://www.youtube.com/watch?v=e_155gTfi0o#normal)
Story.
http://www.telegraph.co.uk/news/newsvideo/7938545/Seoul-bus-explodes.html (http://www.telegraph.co.uk/news/newsvideo/7938545/Seoul-bus-explodes.html)
Quote from: spolic on August 11, 2010, 10:09:09 AM
Great to see people getting off the bus!
Lady sitting above the tank that exploded lost both her feet but is alive.
Another article.
http://joongangdaily.joins.com/article/view.asp?aid=2924414 (http://joongangdaily.joins.com/article/view.asp?aid=2924414)
(http://joongangdaily.joins.com/_data/photo/2010/08/09220417.jpg)
I remember quite a while ago we were talking about propane vehicles and I mentioned something about what if you got hit and it exploded.
A lot said that couldn't happen.
I can't view the vid.......but did this thing get hit or some other type of failure?
looks like a failure, but notice it didnt explode, just mass pressure release
Quote from: cyrus buelton on August 11, 2010, 11:07:41 AM
I can't view the vid.......but did this thing get hit or some other type of failure?
It wasn't hit...tank just ruptured for no apparent reason.
Quote from: Raux on August 11, 2010, 11:08:34 AM
looks like a failure, but notice it didnt explode, just mass pressure release
Thats what an explosion is.
Quote from: Raux on August 11, 2010, 11:08:34 AM
looks like a failure, but notice it didnt explode, just mass pressure release
Luckily there wasn't a spark to ignite the gas...
Quote from: krolik on August 11, 2010, 11:33:49 AM
Thats what an explosion is.
[laugh] [laugh] [laugh] [laugh] [laugh] [laugh] [laugh] [laugh]
Quote from: krolik on August 11, 2010, 11:33:49 AM
Thats what an explosion is.
ok without the fire and all ... geez mr. technical
article says more than 5 have exploded in the past several years. problem?
Ya' think? ;D
There used to be LP cars and buses in at least France, but not so much any more. I think one of them took out a parking garage at some time in history.
mitt
Horseshit! I lived there for a year and didn't get to see a single bus explosion!
(I also never took a bus... :P)
.
I am curios what safety standards apply to those buses in Korea. If heat caused the explosion and this has happened in the past they need to revisit those standards.
Quote from: howie on August 11, 2010, 06:17:00 PM
I am curios what safety standards apply to those buses in Korea. If heat caused the explosion and this has happened in the past they need to revisit those standards.
From the story.
"Anxiety turned to anger towards the government after the Ministry of Knowledge Economy admitted that it had found a number of defects in several buses during safety inspections made earlier this year. A total of 201 CNG buses out of the 4,300 that were tested had faults in their fuel tanks, 134 of which were deemed dangerous enough to cause an explosion.
This was the eighth time that a CNG bus has exploded in Seoul since 2005, no deaths have occurred as a result of the incidents."
Quote from: kopfjäger on August 11, 2010, 06:28:02 PM
From the story.
" no deaths have occurred as a result of the incidents."
Did hear that the woman who had both her feet severed were reattached
LPG and CNG are two different beasts
Quote from: Mother on August 11, 2010, 07:55:09 PM
LPG and CNG are two different beasts
With different regulations (at least in the US). Before retirement I was certified as an installer and trainer in both.
This is a typical CNG tank used in the US.
http://www.cleanvehicle.org/technology/CNGCylinderDesignandSafety.pdf (http://www.cleanvehicle.org/technology/CNGCylinderDesignandSafety.pdf)
My guess is the tank in the bus was not even close.
a CNG tank here with US specs would need to take a hell of a blow to cause a rupture like that
LPG wouldn't do that with a mere tank rupture
it would vent but not as violently
it would make some sound, suffocate some folks, run away a diesel truck or two but it wouldn't blow up a bus and tear off limbs
much safer to rupture LPG than CNG
at least until until it found an ignition source :-\
Quote from: muskrat on August 11, 2010, 12:46:55 PM
article says more than 5 have exploded in the past several years. problem?
Quote from: howie on August 11, 2010, 06:17:00 PM
I am curios what safety standards apply to those buses in Korea. If heat caused the explosion and this has happened in the past they need to revisit those standards.
Quote from: kopfjäger on August 11, 2010, 06:28:02 PM
From the story.
"Anxiety turned to anger towards the government after the Ministry of Knowledge Economy admitted that it had found a number of defects in several buses during safety inspections made earlier this year. A total of 201 CNG buses out of the 4,300 that were tested had faults in their fuel tanks, 134 of which were deemed dangerous enough to cause an explosion.
This was the eighth time that a CNG bus has exploded in Seoul since 2005, no deaths have occurred as a result of the incidents."
Happens everywhere with varying degrees of consequences. Things are found to be wrong and corners are cut to save costs. Saw it happen first hand with some shitty rebar a company was producing. The stuff met strength standards but had shit ductility which wasn't regulated. 1 out of 5 square ties you tried to make by hand would break. They refused to admit anything was wrong since they met all the standards but we ran tests on random samples from a few of their lots and all came up equally shitty. Our school has never bought rebar from them since.
should post the name so we don't used them or someone who gets their supply from them...
Quote from: cokey on August 12, 2010, 09:53:53 AM
should post the name so we don't used them or someone who gets their supply from them...
What daewoo?
Sorry, was talking about wat erk posted..
Quote from: cokey on August 12, 2010, 09:53:53 AM
should post the name so we don't used them or someone who gets their supply from them...
It was McCarthy Steel. We got samples a few of their distributors from around CA and tested them. We used to get all of our rebar from them when we did out concrete tests but ran into that problem about 4 years ago. In a 10' rebar, if you tried to bend it every 10-12", it would break almost every time on the 135deg bends and about 1/4 of the time on the 90 deg bend. Not sure how prominent that is in industry since I bet most sites don't bend their column ties and beam ties by hand. We, being a school and wanting the experience, bend our own ties. I'm not sure where the school gets their stuff nowadays.
It has been a while so who knows, maybe they've fixed their ways. I would like to hope they would but they seemed pretty indignant and defensive when he told them that there was something wrong with their product. And that's to be expected kind of. You should take pride in what you make but you should also be open to criticism and investigate it yourself if someone says there's something wrong.
^^
I'm assuming you guys followed the ACI 318 requirements for bending of reinforcement (i.e. heat treatment if embedded, min. bend radius, bars bent using a proper bending tool)?
Quote from: Triple J on August 13, 2010, 08:39:14 AM
^^
I'm assuming you guys followed the ACI 318 requirements for bending of reinforcement (i.e. heat treatment if embedded, min. bend radius, bars bent using a proper bending tool)?
Yup.
That's interesting. Your're right, reinforcement shows up at the site pre-bent (at least in my experience). It is only bent in the field if there is a mistake.