Wow, so what actually failed? And my 2 cents on the OSHA "debate", I'm glad they're around, not all businesses but some would certainly put their workers lives and limbs in unnecessary danger if it meant making more money. No business is worth lives or limbs, unless it's saving more than it's taking. Based on Nav's comments, I think he's just trying to get people worked up, and he's doing a good job of it.
Not sure how much the spreader beam weighed, but the turbine looks like it weighed 132,000 lb. So it easily could've been close to 150,000 lb. with the rigging gear. Horrific to say the least.
Not sure how much the spreader beam weighed, but the turbine looks like it weighed 132,000 lb. So it easily could've been close to 150,000 lb. with the rigging gear. Horrific to say the least.
@Navigator777777 Your logic escapes me. Being safe = socialist? Why would you take unnecessary risks with peoples lives working around equipment like this? If its worth doing, it's worth doing RIGHT.
I've watched the decline of American worker's ability to accomplish tasks become nearly impossible. We are no longer the greatest nation on Earth because we see risk as a zero tolerance equation.
BTW...I had my own crane service so its not as if I am speaking from zero perspective.
In almost every aspect of production/construction, 'workers" are being forced to accept safety practices that just aren't safe.
..................One small example is safety switches on tools like skill saws where two buttons must be pushed before the saw will work. Counterproductive insanity.
A team of "Doers" perfectly able to access and deal with risk are transformed by various government entities into mindless cretins incapable of making any decisions.
@Navigator777777 Socialist countries are created by work-place safety programs? Thats a new one. Anyway this is actualy pure capitalism. Broken turbine: $10 Million. Using NEW crane rigging and getting a qualified crane inspector in before a HUGE lift like this: 2k TOPS. Do the math.
In the US, a crane accident like this will be used to usurp the authority of the owner, the crane operator, the riggers, the engineers etc to replace common sense with a government minder who makes the ultimate decision but bears no responsibility.
We accept it like bottle fed cattle.
The idea that a government stooge sponging off the taxpayers knows any better than the operator or owner is pure socialism.
Making a lift with known faulty equip. is a crime in my book.
@Navigator777777 Are you on drugs or what? If the owner of that facility had been ensuring that the rigging and equipment followed the government mandated safety rules, the turbine would never have dropped in the first place. In this case the "government stooge" DID know better, since apparently the guys in charge at THIS plant had no clue how to life a turbine like that. Making a lift with known faulty equipment is a crime in EVERY INDUSTRIALIZED NATION too, not just in your "book".
A crane breaks in the states and suddenly everybody that owns a crane is a criminal unless they attend a POS safety class conducted by goons I wouldn't let my daughter date.
@Navigator777777 Ok. Focus. No one is treated like a criminal unless some corporate safety guy decides not to get the crane inspected. then they aren't being TREATED like criminals, they ARE criminals. Dropping a 30 ton cane on some guys face due to negligence is a crime jack-wagon. and OHSA courses in rigging are usually taught by industry experts hired on after they retire. DUUUH
All the OSHA men I've met are fat SOB's. Obesity says something straight off.
All are missing fingers, walk with limps and too willing to show scares from being stupid long ago.
One thing they have in common is hatred for whomever is successful. They use the weight of their position and undeserved authority to make jobs impossible.
@Navigator777777 Stop complaining and bitching and start following the safety rules so you dont get someone killed. OSHA is there to protect workers from morons like you.
@Navigator777777 Yea... thats me. the UNEMPLOYED guy that WORKS FOR OSHA. You are a moron because you do moronic things, yes. Calling "BS" on all of OSHA is one of those moronic things. OSHA Employees are generally industry experts who worked in either construction or some heavy industry. The fact that you call them "Fat SOBs" instead of bringing up a single valid point proves that you are just a whiny bitch. Now finish crying and put your OSHA approved hard-hat on and get to work
Do you think I come by my opinion of OSHA so-called "experts" from a Cracker Jack Box?
I've never met one OSHA man who wasn't fat, walked with a limp, missing fingers and generally unemployable. Everything is impossible or illegal by their standards. When they do come up with plans, they are so full of crap they make Obama look good.
But what??? You work for OSHA but you are not fat?
Well that does it! I'll have a new opinion by morning.
@Navigator777777 As i said, the ad hom attacks prove beyond any doubt that you have absolutely no real point to make. What is impossible? What can't be done? Exactly, you have no idea. And no, i don't work for OSHA but i do work WITH OSHA as does anyone who actually works in heavy industry.
@Navigator777777 again and again, no real point to make. you hate them but cant articulate a single example. they are fat. thats your argument, and its a sad one. what is impossible? what incompetance are you refering to? how are they "scamming" teh system?
@Navigator777777 you can question it all you like. but if you did any research at all you would find out that nearly all fatalities in the work place are found to have been preventable if OSHA recomendations were followed. The exceptions were cases of sudden illness. OSHA makes NO opinion about business being bad or good, it only makes and enforces minimum safe practices. thats all. get over it.
@Navigator777777 So if you go ABOVE minimum safe practices (OSHA Rules) and use "Maximum safe practice" then what in the holy mother of FUCK is your problem?
@Navigator777777 You started by saying that you are sick of the "you cant be too safe mentality" and that you are tired of OSHA because the "fat sobs" make things "impossible". and now you claim you go above the OSHA minimums. So either you have NO idea what you are talking about, or you are just a moron. I cant tell which, and i guess it doesnt matter. Oh, and if you run your business safely you will likely NEVER have an OHSA inspection. So nothing you say adds up.
Do you people even know what socialist mean? You Americans always throw around words that you don't even know the true meaning of. You only use these words to lable things and people that you don't understand and this is why the world views your people as being reall really stupid. Americans should be ashamed of people like you.
Brake system on the crane hoist failed. Oh well, the turbine is in now. Clean it off and button it up. Maybe a little vibration. So what, time for some vodka.
O_o If I was the boss of that place, I'd lower my shaking head and say "Everybody go home. Come back tomorrow and we'll try again!" Why? Because I would need time to recover from:
a) How many hundreds, if not millions of dollars, I am going to have to eat from that mistake.
And
b) The very thought that someone at any given time could've been killed instantly during that incident would drive anyone towards a bottle of booze in order to cope with that for the rest of the day.
i know how this worked. "Hey Dave, this is Bob. What was the FOB on that new turbine? Destination or shipping point?? Uh huh, uh huhhhh.....destination eh? Good!! Tell the manufacturer to come pick up his damaged turbine, it never reached its destination so title is still theirs!"
I was a crane millwright at a Bethlehem Steel BOF plant in the 70s. We had six 250 ton cranes (and I don't know how many 400 ton stripper cranes). When it was necessary to hoist in an entire 400 ton BOF vessel up 75 feet off the floor somebody had a plan. Replace the four 1200 foot, 1 1/2 inch cables on one of the charging cranes. 48 runs of cable. We greased and checked over the crane. Replaced the 250 ton limit signs with 400 ton limit signs. Hauled up the vessel and put it in place.
Picking up very heavy objects at capacity or near capacity is always dangerous and stressful even if your crane in is good condition. It is very hard on a crane since every time you stop the movement it jerks and strains the rope which is already struggling to hold the load.Even with new wire rope if you get a bad operator who lowers a heavy load too fast and then lets go of the stick to stop it,it can snap a cable instantly.With that heavy load you need a slow hand and a minimum amount of stops
@HoistExperts Gross overload and brake failure are both likely possibilities. Turbine blades are precision tuned in such a way that each blade must be balanced to prevent the shaft from destructive oscillations... If it was dropped on a single point, microscopic fissures could result on the axis, not to mention the blades... which could lead to the turbine becoming a mound of junk metal.
this same thing has happened to me, i operate a 45 ton Zenar. The brake failed, causing the coil of steel to slam onto the deck of the Semi trailer. The weight blew out the air suspension, the block fell on top of the coil damaging about 20 laps (.030 cold roll). I was glad the truck driver was clear, and no one was standing next to the trailer.
Being a mech engineer, I would say it fails due to lowering the blades steps by steps, creating surges of unwated stress due to the sudden displacement, therefore accentuating metal fatigue, wich unfortunatelly leads to extreme failure. Analysis of the broken parts could tell more. Strange way of loading it tho. I've seen it loaded sideways to reduce risk of accidents, but that's only when space is available. Might be an old plant design. Hopefully no one was hurt and that's all that matters !!
i work for ge in the uk, and the turbine rotor droped is a 9e.. and a few guys i work with remember this accident! the damage wasn't as ba as it looks. the rotor droped onto is journals into the bearings, but the main damege was done buy the lifting beam falling onto the compresser blades and 1st and 2nd stage buckets (turbine blades).
Having ran and worked on cranes up to 750 ton capacity for 30 yrs, the free falling block @ the end would indicate a drive line or gearbox failure. And the brakes do not stop the load, they hold it after the load is stopped. On lower that is called an overhauling load. When the operator centers the controller, a dynamic braking loop is set up where the motor drives itself to a stop, then the brakes set up and should hold the rated load.
Looks like the motor coupling(lovejoy) gave way, on this open winch style crane! Im a crane tech and honestly since it was most likely the casting of the coupling witch was flawed theres no way that annual inspections would have found this!! However what about the load brake on gearbox side?
@davidbuitenwerf Actually where I worked, all the couplings were split,cleaned,inspected every 3 months and passed or changed. Later on we came up with a formula that we could figure wear on coupling teeth and shell using dial indicators without splitting the couplings. And before any lift that approached max. capacity, the crane was shut down and all was inspected, brakes, couplings,bolts,cables. When you signed your name on the line, you better be right.
hi ansonwilson, I say so because you can see how the hook falls after the lifting device, and you can see also the wire rope falling as well... I think that happened, but it is a thought based on video... regards
you must inspected the whole crane before lifting up!!! you cannot take that kind of risks... The data plate shown in the video is for the lifting device, not for the crane. you can have a 75T crane and the lifting device of 60T. however, the failure was in the wire rope, not in the lifting device... anything could happen.
If the rotor weighed 75 tons then that was he problem. The data plate appears to indicate the capacity at 60 tons. Since I can't see a major power company performing an obviously unsafe lift in that manner I think the focus should be on the bang that occurred just preceding the fall. You can see what looks like some debris falling just the load begins to descend. I am guessing that was part of the gearbox.
No doubt safety is the first priority on the job. I hope I didn't make light of the situation, but my focus for this video is to simply show the failure of the crane, or what can happen if equipment is not maintained properly. Nobody got hurt here, and that is very fortunate.
guys, don't forget that even hoist brakes have duty cycles too. That wasn't exactly the best way to lower the load. The only regulations for a second hoist brake, other than molten metal, allows the hoist motor to be counted as the second brake, to control the lowering of a load.
I'm not too fond of the "motor as a second brake" idea personally, at least with cranes of this size. I agree that you need to treat each load like there is no backup. He seemed to be plugging the motor on the way down, as you can hear the brake engage and disengage. I would say to set your invertor to a slow first speed, and if the load starts to run away, then rely on the main brake.
@502c10 brakes do have duty cycles, that is why you inspect and perhaps replace the brakes if necesary before you do a critical lift. The cause of this incident perhaps is the poor desing of the crane and not the operator's error
@chulo3173- Perhaps, there have been several good theories presented in these comments, each one possible. It would be difficult for any one of us to state correctly what exactly went wrong, some things are certain from the video. It looks like we have some good experienced technicians commenting here. I personally have 18 years servicing overhead cranes (2 red seal trades, 3 welding tickets). It would be interesting to see the report from this incident as we could all learn from this.
It appears as though the hoist brake drum failed. You can see the drum had been destroyed. The crane should have had two hoist brakes, each one capable of handling the entire load.
La grúa segun el video es para 60 toneladas, de acuerdo a la norma ASME B30.11-2005, este debería aguantar un 1,25 veces la carga de trabajo, por lo tanto, 60 x 1.25 = 75 tons, lo más probable es que el rotor pese mucho más de lo que se indica (al tanteo se nota que pesa aprox 100 tons)
Sounds to me that crane was heavily overloaded. Even with slow speed down motor was over speeding. I bet they were close to snap to rope, which probably did happen?
After talking with some more people about this incident, I've found out that these turbines can cost up to $60,000,000 dollars complete. I would imagine both the rotor and the housing are a loss.
wow - would not have liked to been the guy that called the boss after this one.....with respect to what happened, all of you hoist and crane guys out there already know....on the audio you can hear the load brake making noise (under duress), then the elasotomer element coupling between the load brake and the main hoist gearbox fails, followed by the howl of the main hoist gearbox being violently oversped as the load falls........
I believe that is a GE MS 9000 turbine rotor....megadollars...
shes in
EbayConvict 1 week ago
They used that little hoist to lift a 75 tons rotor? It seems to me that it's overloaded.
ogarmi21 4 weeks ago
Wow, so what actually failed? And my 2 cents on the OSHA "debate", I'm glad they're around, not all businesses but some would certainly put their workers lives and limbs in unnecessary danger if it meant making more money. No business is worth lives or limbs, unless it's saving more than it's taking. Based on Nav's comments, I think he's just trying to get people worked up, and he's doing a good job of it.
turdnug 4 weeks ago
HELL NO thats not 75 tonnes its more like 40 tonnes
EXO903 1 month ago
manager to supervisor..." Hans, you sent the insurance premium cheque in last week didn't you ???"
hardrain65 1 month ago
Hoist brake failure by the looks of it...
bravozulu51 1 month ago
@bravozulu51 Yes, It sure looks that way. I worked on a few bridge cranes, up to around 50 tons.
dougspair 1 month ago
even apeldoorn bellen
paulvdhoek 2 months ago
@gummel82 u cock snot, read the message at the end of the clip....what does it say about safety. Faggot fuck you cunt watch and the ask questions
mudaphucker 2 months ago
This has been flagged as spam show
Not sure how much the spreader beam weighed, but the turbine looks like it weighed 132,000 lb. So it easily could've been close to 150,000 lb. with the rigging gear. Horrific to say the least.
Calbenmike 2 months ago
Not sure how much the spreader beam weighed, but the turbine looks like it weighed 132,000 lb. So it easily could've been close to 150,000 lb. with the rigging gear. Horrific to say the least.
Calbenmike 2 months ago
if i had been in charge i would have wet my pants and hoped that it was the crane operator's fault..
but that was definitely an experience to wittness, and to pay.
shit happens, metal fatigue too
Cabuncle 2 months ago
That rotor shaft was worth 8.5 million dollars....
Skyisnotalimit 2 months ago
In the US this, in the US that...fuck the US of A
mudaphucker 2 months ago
@mudaphucker that's in the netherlands you dumb fucker
gummel82 2 months ago
Comment removed
R5H4D0W 2 months ago
Someone needs a class on socialism.
ansonwilson 2 months ago
@ansonwilson ,
Not any more...we are living it.
Navigator777777 2 months ago
I'm sick of the "You can't be too safe" ideology.
Yes you can. Thats how socialist countries are created.
Navigator777777 3 months ago
@Navigator777777 Your logic escapes me. Being safe = socialist? Why would you take unnecessary risks with peoples lives working around equipment like this? If its worth doing, it's worth doing RIGHT.
HoistExperts 2 months ago 7
@HoistExperts
I've watched the decline of American worker's ability to accomplish tasks become nearly impossible. We are no longer the greatest nation on Earth because we see risk as a zero tolerance equation.
BTW...I had my own crane service so its not as if I am speaking from zero perspective.
In almost every aspect of production/construction, 'workers" are being forced to accept safety practices that just aren't safe.
Navigator777777 2 months ago
Comment removed
ansonwilson 2 months ago
@HoistExperts
..................One small example is safety switches on tools like skill saws where two buttons must be pushed before the saw will work. Counterproductive insanity.
Navigator777777 2 months ago
Comment removed
ansonwilson 2 months ago
@HoistExperts
Also: Safe = Socialism? Yes.
A team of "Doers" perfectly able to access and deal with risk are transformed by various government entities into mindless cretins incapable of making any decisions.
Navigator777777 2 months ago
Comment removed
ansonwilson 2 months ago
@HoistExperts He's a troll.
repalmore 2 months ago
@HoistExperts If you are too tired of the "You can't be too safe" thinking, I am not going to let you work on my crew.
transfemoral 2 months ago
@Navigator777777 Socialist countries are created by work-place safety programs? Thats a new one. Anyway this is actualy pure capitalism. Broken turbine: $10 Million. Using NEW crane rigging and getting a qualified crane inspector in before a HUGE lift like this: 2k TOPS. Do the math.
Jpark8283 1 month ago
@Jpark8283
Not exactly.
In the US, a crane accident like this will be used to usurp the authority of the owner, the crane operator, the riggers, the engineers etc to replace common sense with a government minder who makes the ultimate decision but bears no responsibility.
We accept it like bottle fed cattle.
The idea that a government stooge sponging off the taxpayers knows any better than the operator or owner is pure socialism.
Making a lift with known faulty equip. is a crime in my book.
Navigator777777 1 month ago
@Navigator777777 Are you on drugs or what? If the owner of that facility had been ensuring that the rigging and equipment followed the government mandated safety rules, the turbine would never have dropped in the first place. In this case the "government stooge" DID know better, since apparently the guys in charge at THIS plant had no clue how to life a turbine like that. Making a lift with known faulty equipment is a crime in EVERY INDUSTRIALIZED NATION too, not just in your "book".
Jpark8283 1 month ago
@Jpark8283
Then...what is the problem?
A crane breaks in the states and suddenly everybody that owns a crane is a criminal unless they attend a POS safety class conducted by goons I wouldn't let my daughter date.
Navigator777777 1 month ago
@Navigator777777 Ok. Focus. No one is treated like a criminal unless some corporate safety guy decides not to get the crane inspected. then they aren't being TREATED like criminals, they ARE criminals. Dropping a 30 ton cane on some guys face due to negligence is a crime jack-wagon. and OHSA courses in rigging are usually taught by industry experts hired on after they retire. DUUUH
Jpark8283 1 month ago
@Jpark8283
Exactly!
All the OSHA men I've met are fat SOB's. Obesity says something straight off.
All are missing fingers, walk with limps and too willing to show scares from being stupid long ago.
One thing they have in common is hatred for whomever is successful. They use the weight of their position and undeserved authority to make jobs impossible.
Navigator777777 1 month ago
@Navigator777777 Stop complaining and bitching and start following the safety rules so you dont get someone killed. OSHA is there to protect workers from morons like you.
Jpark8283 1 month ago
@Jpark8283 ,
You must be the fat SOB unemployed inspector I wouldn't waste my time for?
Because I know you have no idea about my safety record. My delicate senses are telling me I'm hitting a nerve of truth.
If am a "moron" because I call BS on a government agency full of incompetents...then I thank you for the compliment.
Ex OSHA employees are unemployable.
Navigator777777 1 month ago
@Navigator777777 Yea... thats me. the UNEMPLOYED guy that WORKS FOR OSHA. You are a moron because you do moronic things, yes. Calling "BS" on all of OSHA is one of those moronic things. OSHA Employees are generally industry experts who worked in either construction or some heavy industry. The fact that you call them "Fat SOBs" instead of bringing up a single valid point proves that you are just a whiny bitch. Now finish crying and put your OSHA approved hard-hat on and get to work
Jpark8283 1 month ago
@Jpark8283,
Do you think I come by my opinion of OSHA so-called "experts" from a Cracker Jack Box?
I've never met one OSHA man who wasn't fat, walked with a limp, missing fingers and generally unemployable. Everything is impossible or illegal by their standards. When they do come up with plans, they are so full of crap they make Obama look good.
But what??? You work for OSHA but you are not fat?
Well that does it! I'll have a new opinion by morning.
Navigator777777 1 month ago
@Navigator777777 As i said, the ad hom attacks prove beyond any doubt that you have absolutely no real point to make. What is impossible? What can't be done? Exactly, you have no idea. And no, i don't work for OSHA but i do work WITH OSHA as does anyone who actually works in heavy industry.
Jpark8283 1 month ago
@Jpark8283 ,
You are the newcomer to the debate, hun.
You are the one who went out of your way to cross fours ways with me.
If I have no point to make, why are you bound and determined to make the last point?
I work with OSHA too.
Hate their guts for professional reasons.
I find them a collective bunch of incompetents.
Unemployable in the real world.
OSHA reps are used to scam the system.
Navigator777777 1 month ago
@Navigator777777 again and again, no real point to make. you hate them but cant articulate a single example. they are fat. thats your argument, and its a sad one. what is impossible? what incompetance are you refering to? how are they "scamming" teh system?
Jpark8283 1 month ago
@Jpark8283
This conversation is an example.
If a fella runs a business....I question an outfit like OSHA to subrogate their authority with no responsibility.
Imagine pissy old me and an OSHA rep determining how you should run your business?
OSHA comes from the opinion all business is bad unless they have examined it,
fined it, and then found the operator to be "In compliance" which generally means....we will do whatever you want just go away and stop fining us.
Navigator777777 1 month ago
@Navigator777777 you can question it all you like. but if you did any research at all you would find out that nearly all fatalities in the work place are found to have been preventable if OSHA recomendations were followed. The exceptions were cases of sudden illness. OSHA makes NO opinion about business being bad or good, it only makes and enforces minimum safe practices. thats all. get over it.
Jpark8283 1 month ago
@Jpark8283 ,
I'd like to see a company made up entirely of OSHA members using their own money run a business.
I don't use minimum safe practice...I use maximum safe practice in often dangerous jobs.
Navigator777777 1 month ago
@Navigator777777 So if you go ABOVE minimum safe practices (OSHA Rules) and use "Maximum safe practice" then what in the holy mother of FUCK is your problem?
Jpark8283 1 month ago
@Jpark8283 ,
I love it when a professional resorts to expletives to make a point.
I can conduct my own business safely without overbearing, agenda motivated, self promoting government telling me what I can and cannot do.
I take you agree, a company composed entirely of former OSHA inspectors would be a sight to behold?
Navigator777777 1 month ago
@Navigator777777 You started by saying that you are sick of the "you cant be too safe mentality" and that you are tired of OSHA because the "fat sobs" make things "impossible". and now you claim you go above the OSHA minimums. So either you have NO idea what you are talking about, or you are just a moron. I cant tell which, and i guess it doesnt matter. Oh, and if you run your business safely you will likely NEVER have an OHSA inspection. So nothing you say adds up.
Jpark8283 1 month ago
@Jpark8283
The reality is, OSHA butts in on business just like you butted on this conversation.
See...this thread started because I used the word 'socialism' in conjunction with OSHA.
"You Can't Be Too Safe" is an ideal position for OSHA to take. Its a stacked decked in favor of the casino.
All across America, American business is under attack by mycelia spreading its fungus like web of toxic socialist nonsense.
Business is labeled criminal just by the appearance of OSHA.
Navigator777777 4 weeks ago
@Navigator777777
Do you people even know what socialist mean? You Americans always throw around words that you don't even know the true meaning of. You only use these words to lable things and people that you don't understand and this is why the world views your people as being reall really stupid. Americans should be ashamed of people like you.
diramonsky 4 days ago
This has been flagged as spam show
Fits like a glove
nListed 4 months ago
Brake system on the crane hoist failed. Oh well, the turbine is in now. Clean it off and button it up. Maybe a little vibration. So what, time for some vodka.
lakewood85 4 months ago
O_o If I was the boss of that place, I'd lower my shaking head and say "Everybody go home. Come back tomorrow and we'll try again!" Why? Because I would need time to recover from:
a) How many hundreds, if not millions of dollars, I am going to have to eat from that mistake.
And
b) The very thought that someone at any given time could've been killed instantly during that incident would drive anyone towards a bottle of booze in order to cope with that for the rest of the day.
majustice 5 months ago
its ok you can buy a new one.
redwoodadf 5 months ago
the guy that went under the load! what is wrong with him!
Oalleezz33 5 months ago
all the slings are showing good but if theres a video showing on top. maybe we can see what went wrong.. ill check my crane on work after this one..
Oalleezz33 5 months ago
That'll buff out....
Snoep76239 6 months ago
Rule of thumb: Don't repair your crane with parts from China...
Snoep76239 6 months ago
i know how this worked. "Hey Dave, this is Bob. What was the FOB on that new turbine? Destination or shipping point?? Uh huh, uh huhhhh.....destination eh? Good!! Tell the manufacturer to come pick up his damaged turbine, it never reached its destination so title is still theirs!"
sw8741 6 months ago
ITS GOOD!
thedriver97 7 months ago
Must have been a sad day for what/who ever was involved.
ThomasXp 7 months ago
That video was extremely satisfying to my ears. Good thing no one got hurt.
ThomasXp 7 months ago
cable down...eaaaaaassssyy eaaaaaaasy alright looks good cable down...HOT!!
sincityskywalker 7 months ago
Well guys! atleast the rotor is in the housing !
predatortheme 7 months ago 3
is taht a airplane engine? or just a extraction turbine?
jorasave 7 months ago
I was a crane millwright at a Bethlehem Steel BOF plant in the 70s. We had six 250 ton cranes (and I don't know how many 400 ton stripper cranes). When it was necessary to hoist in an entire 400 ton BOF vessel up 75 feet off the floor somebody had a plan. Replace the four 1200 foot, 1 1/2 inch cables on one of the charging cranes. 48 runs of cable. We greased and checked over the crane. Replaced the 250 ton limit signs with 400 ton limit signs. Hauled up the vessel and put it in place.
catman306 7 months ago
that's one big insurance claim!
neil9327 8 months ago
never buy china made cranes..
izaatmusic 8 months ago
@izaatmusic despite this being a german made crane china made ones aren't that bad i guess. id say never let morons use cranes ;)
allgovsarecriminal 7 months ago
The dinamic break could of failed in first point or the clapper break could of sheared break pad bolt causing the pads to roll of the drum
badass98kx250 8 months ago
I'm pretty sure they could have just purchased a much stronger crane for less than the price of replacement.. But I am no crane expert :3
jaybsc 9 months ago
It it don't fit.... make it fit!
reganapparel 9 months ago in playlist structural
Picking up very heavy objects at capacity or near capacity is always dangerous and stressful even if your crane in is good condition. It is very hard on a crane since every time you stop the movement it jerks and strains the rope which is already struggling to hold the load.Even with new wire rope if you get a bad operator who lowers a heavy load too fast and then lets go of the stick to stop it,it can snap a cable instantly.With that heavy load you need a slow hand and a minimum amount of stops
Mlwtca 10 months ago
wow that could have been worse , it could have killed somebody!
urbanoutkast5185 11 months ago
did it fall in place though?
clonemate55 11 months ago
Amazing, ... the force of Gravity!
buddydog1956 11 months ago
dang it jim i said ,"cable down easy!".......
mharrop396 1 year ago
Its in the right spot, just put the cover on, start it up and see how it goes!
aklnrt 1 year ago
This has been flagged as spam show
Doesn't the plate read Werklast 60,000kg
75 tonnes?
nah
blobholr 1 year ago
Doesn't the plate read Werklast 60,000kg
75 tonnes?
nah
blobholr 1 year ago
@blobholr 75 tonnes is what I'm hearing. If you didn't notice, it dropped the load. Overloaded from what I have been told.
HoistExperts 1 year ago
@HoistExperts Gross overload and brake failure are both likely possibilities. Turbine blades are precision tuned in such a way that each blade must be balanced to prevent the shaft from destructive oscillations... If it was dropped on a single point, microscopic fissures could result on the axis, not to mention the blades... which could lead to the turbine becoming a mound of junk metal.
R5H4D0W 2 months ago
@blobholr is this an, "Aw shit" ? the crane failed, because the hoist motor drive coupling broke. Bad maintenance practices here.
bluecollarboiler 4 months ago
@blobholr goed gezien
paulvdhoek 2 months ago
@blobholr 66, but you're close enough, freakin' heavy.
dougspair 1 month ago
it could'nt land on a better place =D
soverato3 1 year ago
This has been flagged as spam show
APOSTROPHE FAIL AT 0:32 !!
FAIL = it's housing
CORRECT = its housing
LanzaCastillo 1 year ago
Company should give out free pairs of pants.
YTBYlover 1 year ago 12
It looks like the main cable drum coupling failed,one of the pics shows a 4 star dog coupling smashed up ??
31144 1 year ago
this same thing has happened to me, i operate a 45 ton Zenar. The brake failed, causing the coil of steel to slam onto the deck of the Semi trailer. The weight blew out the air suspension, the block fell on top of the coil damaging about 20 laps (.030 cold roll). I was glad the truck driver was clear, and no one was standing next to the trailer.
iamgriff 1 year ago
Being a mech engineer, I would say it fails due to lowering the blades steps by steps, creating surges of unwated stress due to the sudden displacement, therefore accentuating metal fatigue, wich unfortunatelly leads to extreme failure. Analysis of the broken parts could tell more. Strange way of loading it tho. I've seen it loaded sideways to reduce risk of accidents, but that's only when space is available. Might be an old plant design. Hopefully no one was hurt and that's all that matters !!
fegoras 1 year ago
Quick - put the cover on..! It's only a couple bent blades - nobody will notice...
arvliet 1 year ago 18
Hoistfailure: This crane can max hoist 60 Tonnes
largetoolbox888 1 year ago
Looks like load brake failure, motor brake cant hold load. Unsure without seeing it.
davidtbrown19799 1 year ago
its sounds like an operator error bumping the hoist till the brake gave.
mkruszynski 1 year ago
may god that was bad but at least its inplace.lol.
V8Jagnut 1 year ago
i work for ge in the uk, and the turbine rotor droped is a 9e.. and a few guys i work with remember this accident! the damage wasn't as ba as it looks. the rotor droped onto is journals into the bearings, but the main damege was done buy the lifting beam falling onto the compresser blades and 1st and 2nd stage buckets (turbine blades).
leexr2i 1 year ago
@leexr2i Thanks for the info!
ansonwilson 1 year ago
@leexr2i So what caused the hoist failure?
Barnekkid 1 year ago
@ukranes
Brake on the drum: brilliant!
folsomappy 1 year ago
You could hear that coming.
Downfacingdog 1 year ago
fits perfectly.. good job fellas..!!
manhenk 1 year ago
Having ran and worked on cranes up to 750 ton capacity for 30 yrs, the free falling block @ the end would indicate a drive line or gearbox failure. And the brakes do not stop the load, they hold it after the load is stopped. On lower that is called an overhauling load. When the operator centers the controller, a dynamic braking loop is set up where the motor drives itself to a stop, then the brakes set up and should hold the rated load.
middsteve 1 year ago
I'm sure the plant manager was very happy with the installation.
fengineer08 1 year ago
@fengineer08 Yeah, they just buttoned it up and ran the damn thing.
Barnekkid 1 year ago
i drive a overhead crane and lift mostly steel coils and if i ever did that i would never drive a crane again!
jackslaughters 1 year ago
Looks like the motor coupling(lovejoy) gave way, on this open winch style crane! Im a crane tech and honestly since it was most likely the casting of the coupling witch was flawed theres no way that annual inspections would have found this!! However what about the load brake on gearbox side?
davidbuitenwerf 1 year ago
@davidbuitenwerf Actually where I worked, all the couplings were split,cleaned,inspected every 3 months and passed or changed. Later on we came up with a formula that we could figure wear on coupling teeth and shell using dial indicators without splitting the couplings. And before any lift that approached max. capacity, the crane was shut down and all was inspected, brakes, couplings,bolts,cables. When you signed your name on the line, you better be right.
middsteve 1 year ago
hi ansonwilson, I say so because you can see how the hook falls after the lifting device, and you can see also the wire rope falling as well... I think that happened, but it is a thought based on video... regards
luijo90 1 year ago
you must inspected the whole crane before lifting up!!! you cannot take that kind of risks... The data plate shown in the video is for the lifting device, not for the crane. you can have a 75T crane and the lifting device of 60T. however, the failure was in the wire rope, not in the lifting device... anything could happen.
luijo90 1 year ago
Thanks for the feedback. What makes you think it was the wire rope?
ansonwilson 1 year ago
Should have bought a Stahl! :D
MrAbrasive9012 1 year ago
That's debateable :)
ansonwilson 1 year ago
If the rotor weighed 75 tons then that was he problem. The data plate appears to indicate the capacity at 60 tons. Since I can't see a major power company performing an obviously unsafe lift in that manner I think the focus should be on the bang that occurred just preceding the fall. You can see what looks like some debris falling just the load begins to descend. I am guessing that was part of the gearbox.
tomboi1978 2 years ago
@tomboi1978 looked more like a motor coupling blew up, lack of PMs may have also contributed to the overloading of the crane
Juntti2009 1 year ago
I see more comments on the money lost and not the fact that lives could have been lost.
What did cause the failure (overload, improper inspections, wire rope, brakes, etc.)
thebikedude 2 years ago
No doubt safety is the first priority on the job. I hope I didn't make light of the situation, but my focus for this video is to simply show the failure of the crane, or what can happen if equipment is not maintained properly. Nobody got hurt here, and that is very fortunate.
HoistExperts 2 years ago
guys, don't forget that even hoist brakes have duty cycles too. That wasn't exactly the best way to lower the load. The only regulations for a second hoist brake, other than molten metal, allows the hoist motor to be counted as the second brake, to control the lowering of a load.
502c10 2 years ago 3
I'm not too fond of the "motor as a second brake" idea personally, at least with cranes of this size. I agree that you need to treat each load like there is no backup. He seemed to be plugging the motor on the way down, as you can hear the brake engage and disengage. I would say to set your invertor to a slow first speed, and if the load starts to run away, then rely on the main brake.
I still wish I knew more about what went wrong.
HoistExperts 2 years ago
@502c10 brakes do have duty cycles, that is why you inspect and perhaps replace the brakes if necesary before you do a critical lift. The cause of this incident perhaps is the poor desing of the crane and not the operator's error
chulo3173 1 year ago
@chulo3173- Perhaps, there have been several good theories presented in these comments, each one possible. It would be difficult for any one of us to state correctly what exactly went wrong, some things are certain from the video. It looks like we have some good experienced technicians commenting here. I personally have 18 years servicing overhead cranes (2 red seal trades, 3 welding tickets). It would be interesting to see the report from this incident as we could all learn from this.
502c10 1 year ago
perfect fit
ThundareRed 2 years ago 2
It appears as though the hoist brake drum failed. You can see the drum had been destroyed. The crane should have had two hoist brakes, each one capable of handling the entire load.
todengine 2 years ago
La grúa segun el video es para 60 toneladas, de acuerdo a la norma ASME B30.11-2005, este debería aguantar un 1,25 veces la carga de trabajo, por lo tanto, 60 x 1.25 = 75 tons, lo más probable es que el rotor pese mucho más de lo que se indica (al tanteo se nota que pesa aprox 100 tons)
clevishook 2 years ago
Sounds to me that crane was heavily overloaded. Even with slow speed down motor was over speeding. I bet they were close to snap to rope, which probably did happen?
jackohoover 2 years ago
well at least its in
1964corvan 2 years ago
After talking with some more people about this incident, I've found out that these turbines can cost up to $60,000,000 dollars complete. I would imagine both the rotor and the housing are a loss.
HoistExperts 2 years ago
wow - would not have liked to been the guy that called the boss after this one.....with respect to what happened, all of you hoist and crane guys out there already know....on the audio you can hear the load brake making noise (under duress), then the elasotomer element coupling between the load brake and the main hoist gearbox fails, followed by the howl of the main hoist gearbox being violently oversped as the load falls........
I believe that is a GE MS 9000 turbine rotor....megadollars...
TheMachineFreak 2 years ago 2