Mixed Connection, Toxic Result

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Hughes Enterprises : I don't like that there are industrial disasters where people get hurt... but I sure do love the videos showing what went wrong.

Artisan Auto Body : A most excellent use of tax money, imo. Thank you for your informative videos.

Ben Barker : Your quality keeps going up, fluid sims, lighting, shaders, mocap, etc.

10mintwo : yaaas my monthly dose of engineering failure autism is here

465maltbie : Another excellent presentation, people learn better from this format than from a flyer or bulletin. Thank you.

TheSpacecraftX : Really high quality animation on this one.

Liam Tarr : Who thought no labels was a good idea?

lassefar Thygesen : vape nation represent

Dan Watt : Who LOCKS emergency breath masks......

stereomike111 : I mean labels are fucking expensive

readmorebooksidiots : The reenactment graphics are great in this one! Did your cgi person get new software?

L V : Awesome work and informative. I actually look forward to this videos.

Leo Williamson : As a Health and Safety committee Chair and former Chemical Controller at a large facility I was somewhat appalled that there were no labels on the connections, no supervision of the connection and a the operator did not ensure that the NaCl connection was not locked before leaving the area, after it's last use.

TheCarson116 : Well, it's unfortunate that another incident like this had to happen, just thank God no one was killed. I have to agree that the operator should have been on scene during the filling, to make sure the correct fill line was used and the filling was done properly, along with all chemical facilities across the nation should have automatic valves between EVERY piece of equipment and piping, in case of an accident like this one. In addition those valves (and by extension all valves at every chemical plant across the US) should have been clearly marked so the driver knew which was which. Although I'm sort of surprised that while the CSB covered most of the problems that lead to the incident both in the animation itself and in the investigation breakdown after, the one thing they did not mention was that emergency respirator cabinets should be unlocked at all times. After all, someone's life may depend on them. It's also interesting to see actual brand names now(excluding the names of the companies which were involved/responsible for the incident) in the CSB's animations, like the Mack truck in this animation.

joeylawn36111 : If the operator had just waited to watch where the Driver attached that Hose instead of walking away....

icannotfly : the graphics just keep getting better and better!

OttoVonNitro : USCSB notification squad checking in! (Better late than never)

jmowreader : Lessons learned, at least from where I'm sitting: Lesson 0: NEVER LOCK UP YOUR DAMN RESPIRATORS! That's like putting the fire extinguisher on the side of the gasoline tank. Lesson 1: Sign all loading connections. Print signs in English, Spanish and French. If the chemical has a common nickname, add that too; if everyone at the chemical supply company and everyone at the using company calls Stoddard solvent "Varsol," put "Varsol" on the sign.  Lesson 2: Install an automated ball valve on every loading connection. Configure it so the valve is closed when de-energized; if the lights go out while you're pumping chemical into the tank, the valve will stop the loading operation instantly. Put switches in several locations, including the control room. And DON'T run them off your computer! Lesson 3: If practical, use a different loading connection for every chemical. This one might NOT be practical because the chemical supply house doesn't have a different truck for every chemical; it has one and they wash it out between loads.  Lesson 4: Install a chemical release alarm. The workers in this incident discovered the release by either seeing the cloud or smelling the chlorine gas. By that time, it's probably too late.

John : Y'all got a bitchin new graphics card huh? Sweeeeet!

Winston Duong : they have stepped up their animation game 10 fold, its awesome. We need full documentaries made by these people

tc : Operators under stress is cause of all accidents.

Charles Thomas : The animation is strong with this one. One thing I noticed is the trailer, it looked like an MC407. These types of trailers have an internal hydraulic valve to shut off flow quickly if there is a problem. There are devices that breakaway and vent the pressure holding the internal valve open. One or two in the front and one at the rear. Hit them with your hand and they snap off fairly easily, shutting the internal isolation valve thus stopping the flow. It seems the driver was trying to manually shut the external valve but could no reach it, then tried to shut the internal from the other side. DOT drivers should know this, but it is an easy thing to miss when there is an emergency. Something to keep in mind if you are loading/unloading trailers. Drivers should also be in attendance during transfers per DOT regulations within 25 feet of the hose/isolation valves IIRC. Being in the cab is not in attendance and if he was watching the transfer he would have been able to stop it. There are some gaps in plant readiness for a vapor cloud. Putting some water from a fire monitor would have probably knocked down some of the gas. I don't even need to comment on the respirators being locked up. Those photos of the vapor cloud are stunning in scope. The DOT Emergency Response Guide for evacuation of the area is up to 7 miles downwind depending on conditions. Anyways, enough of my armchair quarterbacking from my soapbox. Be safe out there.

Doxie Lain : Why in earth did the company lock their respirators up? that seems insane

Luis Gil : Congrats, the quality of the video it's so great and professional as usual. Thank you for sharing it.

Harrison William : Why would this company not have the fill lines tagged out and labeled? There should be locks on each fill line with a tag stating what line it unlock and each line should have it's own separate lock.

Gustav Derkits : Write your congressman! Trump’s budget proposes eliminating the chemical Safety Board. It costs $11 million per year , less than Trump will gain from his tax change, and it saves lives. The real reason for the proposed shutdown is that companies want to avoid the expense of safety and avoid objective accident analysis when a lawsuit occurs.

ryobi battery dept. : i can't get enough of these videos, is there any similar channels on youtube like this anyone can suggest?

Pedro Brito : We should be pouring buckets of funding into this agency, so much learning so little videos 😭

Shami Algawzi : A great shared lesson learned, many layers of protection failed.

MUHAMMAD ALIM ADHA BIN MAKHTAR - : It's seem like the Bhopal incident...

Atayfordays : Love the new graphics

Sean Fowler : It seems like the connections of the two chemical fill pipes should be different so there is no way to connect to the wrong fill line

DrHillbillyShow : In the aircraft fuel business this problem was solved decades ago. Jet fuel (kerosene) and Avgas (high octane gasoline) are distributed through hose and connector systems that CANNOT be cross connect because they will not fit together. Thus, mixing is not possible. It's that simple.

ryobi battery dept. : i can't get enough of these videos, is there any similar channels on youtube like this anyone can suggest?

ryobi battery dept. : i can't get enough of these videos, is there any similar channels on youtube like this anyone can suggest?

TheWittyGeek : The animations are those of a popular YouTube channel but the deadpan demeanor of the people screams federal government. Overall, these.videos are really interesting and I hope y'all continue to produce them.

bubba99009 : You would think a driver hauling hazardous materials would pay attention to where he is unloading. They are have to go through some kind of certification to haul this kind of stuff. Did he just pick a connection at random? The labeling could have been closer to the connection point but the lines were labeled if he cared to look. The end result could have been much worse than a chlorine gas release depending on what he decided to dump his sulfuric acid into or if the venting wasn't sufficient for the quantity of chlorine gas being produced. Many reactions with strong acids are really energetic.

Keiya Bachhuber : Yeesh. Ideally, the connecty bits would be keyed such that you literally can't connect the wrong things together without physically altering the connection points, but with so many different chemicals being distributed I don't think that's practical. Hmm. I suppose putting the 'fixed' connectors further apart, perhaps behind separate gates, would help. People are lazy, if you make it way easier to do the right thing they'll do it almost every time even *without* instruction.

Jordan Gansemer : This feels like a TV show.

Geoff Wood : I love these videos please don’t ever stop

Mark Collins : Good thing CSB received funding this year - it was on the block to be eliminated.  All engineering & safety students should watch theses videos.

Corey Davis : Kemkey. Google it

Lewie McNeely : Looked like a label sleeve to the right of the coupling was upside down. GREAT JOB C.S.B.!!

Treblaine : 4:30 oh shit, those cars. Guess they didn't get the evacuation message.

A S : why the hell would you lock up escape respirators????

juan gonzalez : Hey we have these two chemicals that are highly toxic if mixed right? What if we put both of the fill nozzles 18" apart instead of on opposite ends of the compound because reasons. Ya know these two compounds in tanks that probably have bleed valves for when they heat up and over pressure. Yeah, all of these are great ideas.

Corvid : 4:10 I seriously hope no firefighter was stupid enough to walk into a cloud of Chlorine gas wearing a fire tunic... even the pump in my tiny retained station has a couple of the old "Teletubbie" spaceman suits to be worn over your entire BA set!

Liquid Audio : Another wonderful video, production quality and graphics are better than ever. Love the narration too, this is a standout feature of these superb productions. Great work guys!

David Sonnen : Wow! Yet another example of poor process design. It's good that CSB analyses these incidents and publishes their results. I'm sure that the affected industries would simply bury the information

PopcornMax179 : When are we gonna get a feature film?