The Man Turned into a Balloon….
The morning newspaper today reported of an unfortunate accident, A New Zealand truck driver fell backwards with some force on to the fitting which pierced his buttock and started forcing air in through the wound at 100 pounds per square inch. Unable to move the man had no choice but to lie there as his body became increasingly inflated like a balloon. Luckily his workmates nearby heard his screams and came to help him, he suffered moderate injuries but lived to see another day.
I never knew it can happen, but then it has so i wanted to look a little bit further on the same. The unfortunate truck driver is Steven McCormak and this is what has happened
He was was standing on his truck’s foot plate Saturday when he slipped and fell, breaking a compressed air hose off an air reservoir that powered the truck’s brakes.
He fell hard onto the brass fitting, which pierced his left buttock and started pumping air into his body
“I felt the air rush into my body and I felt like it was going to explode from my foot,” he told local media from his hospital bed in the town of Whakatane, on North Island’s east coast.
“I was blowing up like a football,” he said. “I had no choice but just to lay there, blowing up like a balloon.”
McCormack’s workmates heard his screams and ran to him, quickly releasing a safety valve to stop the air flow, said Robbie Petersen, co-owner of the trucking company.
He was rushed to the hospital with terrible swelling and fluid in one lung. Doctors said the air had separated fat from muscle in McCormack’s body, but had not entered his bloodstream.
McCormack, 48, said his skin felt “like a pork roast” – crackling on the outside but soft underneath
I am surprised he did not die from air getting into his blood stream, he’s also lucky it pierced his butt anywhere else would have been catastrophic, would have resulted in internal injuries or probably have crushed all his organs and met a terrible end. He is one lucky man, i guess an instant celebrity.
Me wonder how are they going get all that gas out…. :0) i guess the natural way…..
Understanding Japan’s Nuclear Crisis
Understanding Japan’s Nuclear Crisis
- By Ars Technica
- Categories: Energy, Environment
- By John Timmer, Ars Technica
Following the events at the Fukushima Daiichi nuclear reactors in Japan has been challenging. At best, even those present at the site have a limited view of what’s going on inside the reactors themselves, and the situation has changed rapidly over the last several days. Meanwhile, the terminology involved is somewhat confusing—some fuel rods have almost certainly melted, but we have not seen a meltdown; radioactive material has been released from the reactors, but the radioactive fuel currently remains contained.
Over time, the situation has become a bit less confused, as cooler heads have explained more about the reactor and the events that have occurred within it. What we’ll attempt to do here is aggregate the most reliable information we can find, using material provided by multiple credible sources. We’ve attempted to confirm some of this information with groups like the Nuclear Regulatory Commission and the Department of Energy but, so far, these organizations are not making their staff available to talk to the press.
Inside a Nuclear Reactor
Nuclear reactors are powered by the fission of a radioactive element, typically uranium. There are a number of products of this reaction, but the one that produces the power is heat, which the fission process gives off in abundance. There are different ways to extract electricity from that heat, but the most common way of doing so shares some features with the first steam engines: use it to boil water, and use the resulting pressure to drive a generator.
Radioactivity makes things both simpler and more complex. On the simpler side, fission will readily occur underwater, so it’s easy to transfer the heat to water simply by dunking the nuclear fuel directly into it.
In the reactor design used in Japan, the fuel is immersed in water, which boils off to generate power, is cooled, and then returns to the reactor. The pressure vessel and primary containment keep radioactivity inside. (Ars Technica)
Unfortunately, the radioactivity complicates things. Even though the fuel is sealed into rods, it’s inevitable that this water will pick up some radioactive isotopes. As a result, you can’t just do whatever you’d like with the liquid that’s been exposed to the fuel rods. Instead, the rods and water remain sealed in a high-pressure container and linked pipes, with the hot water or steam circulated out to drive machinery, but then reinjected back into the core after it has cooled, keeping a closed cycle.
The water recirculation doesn’t just let us get power out of the reactor; it’s essential to keeping the reactor core cool. Unless the heat of decay is carried away from the core, its temperature will rise rapidly, and the fuel and its structural support will melt.
The Fission Reaction
Uranium ore. (Marchin Wichary/Flickr)
On its own, the uranium isotope used in nuclear reactors will decay slowly, releasing a minimal amount of heat. However, one of the decay products is a neutron, which can strike another atom and induce that to split; other neutrons are produced as the products of that split decay themselves. At high enough densities, this chain reaction of neutron-induced fission can produce a nuclear explosion. In a nuclear reactor, the fuel density is low enough that this isn’t a threat, and the rate of the fission can be controlled by inserting or removing rods of a material that absorbs neutrons, typically boron.
Completely inserting control rods to limit uranium’s fission, however, doesn’t affect what’s happened to the products of previous reactions. Many of the elements that are produced following uranium’s split are themselves radioactive, and will decay without needing any encouragement from a neutron. Some of the neutrons from the reactor will also be absorbed by atoms in the equipment or cooling water, converting those to radioactive isotopes. Most of this additional radioactive material decays within the span of a few days, so it’s not a long-term issue. But it ensures that, even after a reactor is shut down by control rods, there’s enough radioactive decay around to keep things hot for a while.
All of which makes the continued operation of the plant’s cooling system essential. Unfortunately, cooling system failures have struck several of the reactors at Fukushima Daiichi.