Concrete Pump Hose Whips, Killing Worker

Concrete Pump Hose Whips, Killing Worker


I’m Aaron Feldman, Investigations Officer
with WorkSafeBC. Inside the pipeline of a concrete pumper,
air can get trapped and compress to hundreds of pounds per square inch of pressure. The release of this air can cause the hose
to suddenly whip. Here, that cost one worker his life. Two workers had just completed a porch using concrete supplied by a pumper truck. The truck’s pump was stopped and its boom was relocated to pour a walkway. One of the workers held the end-hose
over the concrete forms. The concrete pump operator restarted the pump. He saw that the concrete wasn’t flowing. Realizing there must be a blockage, he immediately
hit the emergency stop button. The blockage suddenly cleared. Concrete and air burst out, whipping the hose. The worker’s heel caught on a piece of formwork. He then fell and struck his head on a 2 by
10. The worker did not survive his injuries. A hose whipping hazard is created if air gets into a pumper’s delivery system and is compressed against a blockage. Air can get into a pipeline if the pump is
stopped while the boom tip is in the down position. That’s what happened here. After the porch was poured, the pump was stopped
with the boom tip down. Concrete was allowed to drain out of the last section of the boom. Concrete in the system then likely flowed
back to the pumper’s hopper, sucking air in through the end-hose. Now inside the pipeline there was a pocket of air. Restarting the pump pushed the concrete forward, compressing the air pocket like a spring against the blockage. Propelled by the pump and the compressed air,
the blockage moved faster and faster through the pipeline. Seeing no flow, the operator pushed the emergency stop, but it was too late. The air and concrete blasted out, causing the hose to whip. Hose whipping accidents can be prevented. Before starting a pour, warn workers of the hazard of hose whipping. Train workers to prevent blockages in pipelines and to recognize situations when air can get trapped behind a blockage. To minimize whipping, end-hoses should be no longer than allowed by the manufacturer. A coupling should not be on the discharge
end. The hose on this pumper was 20 feet long — 8
feet longer than allowed — and it had a coupling on the end. Hose whipping is a serious hazard. If you restart a pump after the boom tip has
been down, ensure that workers stay clear of the end-hose until the concrete is flowing
smoothly.

100 thoughts on “Concrete Pump Hose Whips, Killing Worker

  1. Working around concrete pumps for over 30 years I always saw the operator boom straight up in the air bringing the concrete down to one place where it wouldn't be no trap this video should mention that for all operator that don't know it

  2. same thing happened here a few yrs ago and the nozzle took the guys head nearly off. I worked at the ambulance service then and was called to the scene. the hose itself is heavy but the metal nozzles are heavy as well and did a lot of damage.

  3. That poor guy was just doing his job and it killed him. Well hitting his head on the board did. It is so close wheel barrel it up. It's not that far away.

  4. what a waste of money to lump pump that mini pour.
    ready mix truck, two guys on wheelies, one screed, one on the rake. we can unload 9 metres that way in 40 minutes. with good wheeling

  5. why in the hell was they pumping a sidewalk that a truck could be used should have used a different picture all of you finishers out there know that .

  6. HOW DID THIS HAPPEN!?!?! I THOUGHT OPRAH SAID BEING A MOTHER WAS THE HARDEST JOB ON THE PLANET!?!? But aside from that, why did they even need that pump for a job like that? What ever happened to a couple of guys with wheelbarrows?

  7. who the f has disliked this? it's information to stop accidents and deaths! found it interesting big thumbs up I'll get my mate to watch/like it for you mate

  8. The concrete can also set up in the hose. This too will build huge pressures. So much that it can blow backwards up into the hopper. Taking the hoses apart to find and clear that kind of stoppage, is also dangerous.

  9. Very misleading video. The hose did not kill him, his bad footing and falling down hitting his head killed him.
    I've been in construction almost 20 years and the kick or whip of the hose is not enough to knock a man down. The man fell down because he tried to step back after a slight jossel of the hose and his foot got stuck in the rebar causing him to fall.
    If there is any blame it should be on the rebar that sounds like it was NOT chaired up properly.

  10. Judging by the clip alone, the hose pushed him and he tripped backwards. He seems to have died from the trauma on the back of the head when he fell on the solid slab. The hose did not "whip" him. He should have worn a hard hat too.

  11. It was not the hose whipping that killed the worker, but the head injury caused from hitting his head. But good video none the less. Safety first

  12. I've worked with 8-10-12 inches hose transferring water Pressure in these hoses are very powerful when dealing with short hoses your dangerous level just jumped because there are no air relief valves to relieve pressure so if your hoses has maxed it's potential your pretty much dealing with in the oilfield we like to the dancing snake lol they may have knew concrete but they did not know how to handle pressure regulation which is why they the company and the driver are responsible for this tragedy . Please people educate your yourselves before dealing with anything that has the power to kill you .

  13. I was next to a hose when it exploded right behind a blockage. I nearly got my face torn off by the pressurized mixture of concrete. It blew the lenses out of my safety glasses and cut up my face and neck pretty bad. The guy standing in a boat directly behind me got hit with the metal hose coupling and knocked into the water.

    We were under a dock repairing spalling and concrete pile so just the concussion of the blast was enough to disorient you. I thought my throat had been ripped open b/c that's how it felt when all of that pea gravel and rock hit me. Not a fun day for those of us involved.

  14. Why would you boom pump a front porch on level ground? I've never seen it done with a boom that Damn high for a form that's on level ground.I've always seen it pumped from a ground level hose inline to the truck.

  15. Your see to prevent this all to graver and the reason why British builders are the best in the world is because you would lay it across the ground then it never gets blocked I would have thought that was standard in the building trade I'm surprised by that I've never heard of anyone being killed like that

  16. why would a pump be used when that porch and walkway was easily accessible via wheelbarrow or the chute from the cement truck itself?

  17. Concrete work is hard labor and im a 18 year experienced electrician. I tried it for one day just for kicks they even gave me the easy part just holding and moving a tool called the vibrator. Yeah my respect for any concrete worker i earn $33- $48 per hour as an electrician service tech, you guys deserve $40 per hour easy.

  18. This accident is more to do with TRIP HAZARD and HOUSE KEEPING (2×10? where and why?) However the lesson is worth. Hoses should have some sort of stabilizers at the end

  19. Dang. I didn't know that. I previously worked in construction too building house foundations. It was mostly the manager that handled the hose but once a while it gets passed to someone in those hard spots then back to him.

    Also. When getting hired. You sign some kind of waiver basically saying that your own accident is your own fault. But there is still the workers compensation that you can some how get.

  20. I've done alot of foundation this way. Also to pump to second and third floor levels . To me it Sounds like a inexperienced pump operator . When you first start pumping from truck to pump is when this is most common and the operator should know this . Other common fck ups are kinking the hose or walking in front of the hose it's like a million rock bb's coming at you

  21. I seen a guy pumping a block Foundation loose 3 fingers kicked and mashed them off!! I had to dig his fingers out of a glove. They were able to save 1 finger

  22. Personally, I’ve been in the site work where the same situation happened but fortunately he is a live now .

  23. #1-guy should've been wearing a hard hat
    #2-we NEVER let anyone directly hold the hose – always use a lead-line (rope)

  24. I was on the end of a hose one day and had two dumbassed mexicans dragging hose ,when they got a kink in it they did not say shit and released it .Well my hard hat took the blow thank God .The metel end of the hose wacked up against my hard hat and blew it around thirty feet away and covered me in grout .When I got my hard hat back it was split halfway around the edge to the top.That hat saved my gourd from being split.So can anyone tell me what went right and what went wrong?

  25. We had this happen on our job site, the hose guy lost control of the hose and half of the crew was drenched in concrete.

  26. seen this in a helicopter hanger young guy held end ……blockage ….booom….2 brand new hanger doors ruined…£10,000

  27. I seen an air hose at work was not attached and when he connected the hose whipped and missed my head by inches I didn't know any better I was new but they investigated the incident and fired the guy I went from fire watch to doing 2 jobs again I knew no better but they noticed I was righting down the bolt patterns step by step on my paper Nomex suit on changing gaskets so they let me do that guys job which I didn't get a raise i did get to do something new i was really bored doing firewatch fighting sleep was tough i was glad to help lmao i still fire watched but when i wasn't needed i helped change gaskets and a heat exchanger which was pretty cool, we had a cat cracker i believe is what they call it go out and reignite that shit scared the underwear off everyone working in that unit the whole plant was running towards the levee 2 women were trampled they lived but it was tough incident on there part anyway, so we had a meeting on it the next day and the head plant safety guy if i remember correct he told us if the plants unit had really blown up we wouldn't have time to make it out the unit as i have gotten i realized the chemicals that was being made in that unit H2H is very very deadly and doesn't take much when you breath it in to kill you even tiny tiny amounts can severely damage or kill you… That same plant this happened the unit we worked in had exploded before guess that was on peoples minds when the catcracker reignited which is probably me spelling wrong and pronouncing but plant guys should know what I'm talking about.

  28. I do projects that always require concrete pumps. Foundations, walls etc. Hard & dangerous work men. 😏

  29. Had a pipe blow on me pouring a foundation years ago, covered the houses next door in concrete lol

  30. I used to walk on the forms with the pump in arms. I'm a skinny guy so it was like walking a fire hose that's spraying crate. But my youth and agility allowed me to succeed

  31. Ok one. Dag gets stuck and the hydraulic pressue pushes the cylinders until the concrete is pressurised.. A simple reverse stops this emergency stop leaves the pressure there… If the dag suddenly released the pressure forces it out..

    Anyway nice try

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