Check the listing for details. steam turbine bladed disk segment overspeed failure turbine blade. Condition: Used. Listed at 365.00 USD. KEYWORDS: Turbodyne steam turbine Terry Steam Turbine Dresser-Rand Ingersoll Rand Wellsville, NY locking bucket turbomachinery rotating equipment prime mover high speed API overspeed centrifugal force API petrochemical compressor-driver Please note: I ship to USA only. Depending on buyer's location eBay may collect state sales tax. Price is firm. Listed here is a vintage engineering failure sample. It is a segment of a steam turbine bladed disk that suffered an overspeed failure. The turbine was a compressor driver in petrochemical service. It has been my prize engineering possession since the 1990s and now it's time to find it a new home (and get some beer money so I can drown my sorrow for having parted with it). The bucket is the radial-entry locking bucket of a tangential-entry design turbine stage. The turbine (built in the 1960s and still operating in the '90s, maybe even to this day) apparently lost load and oversped before the turbine tripped (or something to that effect). The locking bucket is the last bucket in the assembly process, "closing" the wheel. It is retained, in this case, by two large, highly hardened locking pins of great tensile strength. It can be seen that both pins are substantially bent. Locking pin holes in both sides of the rim and in the locking bucket itself show great deformation. The bucket has lifted out of the wheel. In addition, there is a crack in the rim above one of the locking pin holes indicating that, had the speed gone much higher, the locking bucket would have been "liberated". "Liberated" was Orwellian "Newspeak" at the time as we were forbidden to use the term "failure" starting in that era. Don't look up. The last photo shows a sample of the type of steam turbine rotor from which this piece came. I was performing modal testing on that particular rotor due to a fatigue-induced blade "liberation". The machine from which this listing came actually had only two stages. The second stage airfoil was slightly taller and all the blades in that stage exited the wheel. The centrifugal forces in turbomachinery are amazing and this piece is a perfect demonstration of that. The piece weighs 2 lb 4 oz. Interestingly, eBay says that the average sold price for an over-sped turbine disk segment is $49.50. I wonder what their sample size is. Please ask any questions you might have prior to bidding or buying. Thank you. Seller’s item reference number: 32.071 - 202 note: listings from this seller may be unavailable from 12/7 through 12/26 hhL8220205SDT_5