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InitialDave posted:
Coincidence? this was posted on one of the russian sites i frequent.        
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Jul 27, 2016 16:05
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MrYenko posted:Medical oxygen has a certain amount of moisture added back into it before the gas is bottled. Aviator's Breathing Oxygen does not, and is bone dry. Water vapor freezing in your oxygen system at 30000ft is no Bueno. Never use medical oxygen as a substitute. Good tip! In the future I'll remember not to fill my tires with medical oxygen.
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Jul 27, 2016 19:08
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Not all medical oxygen does. That's why we have to use humidifiers. A and B tanks are generally dry. D tanks for ambulance use are, too. C tanks, though, are a crapshoot.
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Jul 27, 2016 19:25
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kastein posted:Yeah, isn't there a substantial risk of explosive self decomposition above 14psi or so with nondissolved acetylene? Yeah you don't want anything to do with undissolved acetylene above 15 psi. It does take shock to set it off, though the reaction can be catalyzed by copper so never use copper or brass fittings for gas welding. Edit: the tanks are also filled with a porous material called agamassan to prevent build-up of dangerous concentrations of acetylene gas as the tank is emptied. Acetylene tank cut in half:  Honestly the stuff is nasty as hell and I don't know how anyone ever figured out how to use it safely. Disgruntled Bovine fucked around with this message at 03:48 on Jul 28, 2016 |
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Jul 28, 2016 03:42
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kastein posted:Yeah, isn't there a substantial risk of explosive self decomposition above 14psi or so with nondissolved acetylene? Yes, that's why there's a big red "DO NOT GO THIS HIGH" indicator on acetylene regulators.
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Jul 28, 2016 05:07
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EKDS5k posted:Yes, that's why there's a big red "DO NOT GO THIS HIGH" indicator on acetylene regulators. On deployment some guys were doing a braze job in the O2N2 plant space, on some piping that's not on the clean side thankfully. System was supposedly drained and depressurized and was tagged out. It had some other form of flammable gas in it. As one guy sweated off the old fitting, as soon as it got hot gas started spewing out, which created a fireball that shot about 6 feet and just kept spewing flame. The firewatch, seeing this and watching the guy fall down, assumes he's dead. He drags the torch lines back toward him, and in a panic turns the nozzles off. Except he opened acetylene all the way, and closed the oxygen. Then sprinted back to the bottles, and did the same. Somehow he also hit the regulator. Instead of calling away the loving FIRE IN THE MOST FLAMMABLE GODDAMN SPACE ON A SHIP, he runs back to our shop, where I was cutting some sheet metal. Run back to the space, and the flame has stopped...but all you see is the black poo poo that acetylene lets off floating in the air, and the entire space REEKS. So, I grab the torch and kill the acetylene. Run back to the bottle, and he had opened it full and when he hit the regulator it bumped it to 17 psi. I don't think I've ever been that loving scared.
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Jul 28, 2016 05:28
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Oh man, parachuters in a flammable space. Not loving cool.
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Jul 28, 2016 05:52
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sharkytm posted:Oh man, parachuters in a flammable space. Not loving cool. I wasn't sure how many people called them that so I refrained  And yeah, it sucked. I remember we had training a few days later, and one of our guys asked a salty rear end master chief what to do if there's a fire in the O2N2 plant and his reply was "run to the opposite end of the loving ship and hope you hit the water before shrapnel hits you." Aircraft carriers are fun.
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Jul 29, 2016 02:05
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iwentdoodie posted:On deployment some guys were doing a braze job in the O2N2 plant space iwentdoodie posted:fire in the O2N2 plant  http://www.militarynews.com/norfolk-navy-flagship/news/quarterdeck/a-bunch-of-air-heads-o-n-plant/article_926b26fa-763a-5855-9a52-f642c1dd84f4.html posted:The O2N2 plant operators use a machine, called a producer unit, to produce liquid oxygen (LOX) and liquid nitrogen (LIN) from ambient air... the Oxygen Nitrogen (O2N2) plants on board the Navy’s forward-deployed aircraft carrier USS Ronald Reagan (CVN 76), to provide O2 and N2 services for her more than 5,000 Sailors and 70 aircraft of the embarked Carrier Air Wing (CVW) 5.  Provided that it happened on an American ship, according to wikipedia, there's a 50% chance that this was on a ship with enough fissile material to run for 20 consecutive years, plus all of the fuel for all of the aircraft; and a 50% chance that it was on a ship with the aforementioned aircraft fuel, plus fuel for its massive gas powered turbines. I don't know which scenario is scarier
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Jul 29, 2016 03:49
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The Door Frame posted:
Well, it was a CVN of the same class and in this decade so yes.
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Jul 29, 2016 04:38
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The Door Frame posted:
The CVN's also carry a huge amount of bunker fuel to refuel their escorts underway. Or at least that's what I was told by a guy who was in the navy on them. E: Also, 3.5 million gallons of JP-5. The Locator fucked around with this message at 05:58 on Jul 29, 2016 |
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Jul 29, 2016 05:56
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The Locator posted:The CVN's also carry a huge amount of bunker fuel to refuel their escorts underway. Or at least that's what I was told by a guy who was in the navy on them. Hi, I'm a writer for National Geographic TV. Could you please express this in units that people actually use: jumbo jets, elephants, swimming pools or family sedans?
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Jul 29, 2016 10:50
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IPCRESS posted:Hi, I'm a writer for National Geographic TV. 0.13 Empire State Buildings
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Jul 29, 2016 12:36
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Number 1 Sexy Dad posted:0.13 Empire State Buildings How many football fields is that?
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Jul 29, 2016 12:41
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Disgruntled Bovine posted:How many football fields is that? American or European?
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Jul 29, 2016 13:07
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PhotoKirk posted:American or European? In the uk we use minis (old car), Wales (mostly for natural disasters), Olympic size swimming pools, and double decker busses. We don't use football (soccer) fields because then size can vary quite a bit.
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Jul 29, 2016 14:12
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IPCRESS posted:Hi, I'm a writer for National Geographic TV. 4.3 parsecs.
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Jul 29, 2016 15:03
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Nothing good has ever come from the production, storage, transport, or use of liquid O2.
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Jul 29, 2016 15:22
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MrYenko posted:Nothing good has ever come from the production, storage, transport, or use of liquid O2.
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Jul 29, 2016 15:23
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HERAK posted:In the uk we use minis (old car), Wales (mostly for natural disasters), Olympic size swimming pools, and double decker busses. We don't use football (soccer) fields because then size can vary quite a bit. 54,000 hogsheads
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Jul 29, 2016 15:32
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MrYenko posted:Nothing good has ever come from the production, storage, transport, or use of liquid O2. You say that like fire is a bad thing. Disgruntled Bovine posted:Yeah you don't want anything to do with undissolved acetylene above 15 psi. Weird, most of the O/A torches and hoses I've used are all brass and rubber. Never seen anything else used... agamassan, iirc, is also one of the few remaining legal uses of asbestos in this country. I know the original recipe used it but I don't know if the modern one does.
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Jul 29, 2016 16:19
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PhotoKirk posted:American or European? Did he say pitch?
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Jul 29, 2016 16:27
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The Door Frame posted:Did he say pitch? Pitching is in baseball. In cricket, it's called bowling.
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Jul 29, 2016 16:31
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CharlieWhiskey posted:Pitching is in baseball. In cricket, it's called bowling. Yes but in american football it's called a field and everyone else's football calls it a pitch.
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Jul 29, 2016 16:33
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Look at the ball flying over there now Along with all of the fucks that I give Also here's a gas tank out of a TJ Wrangler... guy's exhaust pipe broke off over the rear axle and was blasting exhaust directly at the plastic gas tank. Good thing he noticed when he did.   
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Jul 29, 2016 17:18
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The Locator posted:The CVN's also carry a huge amount of bunker fuel to refuel their escorts underway. Or at least that's what I was told by a guy who was in the navy on them. The KHK had lots of Diesel for herself, every 5 days she needed to gas up. The CVNs only carry lots of JP5 for the wing. Source: I'm a former MSC cargo mate on oilers.
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Jul 29, 2016 18:30
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joat mon posted:54,000 hogsheads For gently caress's sake, we're using the metric system for a reason. 54 kilohogsheads
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Jul 29, 2016 20:21
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kastein posted:Look at the ball flying over there now My old Volvo did that to its rear bumper surround, because a PO had a new exhaust put on that was a bit too short. Was never an issue in-town, but then I drove it up the mountain to Prescott and what amounted to a few minutes of solid WOT to maintain speed cooked it.
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Jul 29, 2016 21:03
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Collateral Damage posted:NASA disagrees. 
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Jul 29, 2016 21:29
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I believe that was their finest hour, sir. 
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Jul 29, 2016 21:53
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Unrelated, but we've done some work (indirectly) for NASA, and the customer through whom we do that work has a specific quality clause which can be cited on a PO when an item is to be utilized in manned spaceflight. It basically states that if the vendor executing the purchase order can think of any way to improve the safety, reliability or performance of the part they are manufacturing they are required to pass that information along to NASA. Kind of a weird clause, but I thought it was neat.
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Jul 29, 2016 23:14
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Do you make o-rings?
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Jul 30, 2016 01:19
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MrYenko posted:Do you make o-rings?  Also, awkward that the code for that one is "boom"
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Jul 30, 2016 03:10
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MrYenko posted:Do you make o-rings? Close, washers. Though that's mostly for automotive. Aerospace we make all kinds of weird parts and usually have no idea what they are. As far as I know none of them have killed anyone yet.
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Jul 30, 2016 03:47
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My dad drives for a trucking company and tonight the tanks fell off his truck while idling. It only had a couple million miles on it
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Jul 30, 2016 06:01
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QuarkMartial posted:My dad drives for a trucking company and tonight the tanks fell off his truck while idling. It only had a couple million miles on it Are we still talking NASA or..,
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Jul 30, 2016 07:07
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QuarkMartial posted:My dad drives for a trucking company and tonight the tanks fell off his truck while idling. It only had a couple million miles on it Solid rocket booster seperation went smoothly I take it Seriously though, kinda surprised, I thought people checked that stuff more regularly on semis.
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Jul 30, 2016 18:44
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Holy fuckin' nope! On a phone, so it's tiny and at a glance I went "oh drat that got pretty crushed or something, better read the post" and then  How did he decide to look? Hot plastic smell?
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Jul 30, 2016 18:45
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kastein posted:Solid rocket booster seperation went smoothly I take it Daily inspections are required by federal law, but if you actually take the time to do them expect to be let go for unrelated reasons and coincidentally replaced by somebody willing to just falsify a log and get the truck rolling 30 minutes sooner every morning.
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Jul 30, 2016 19:36
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Javid posted:Daily inspections are required by federal law, but if you actually take the time to do them expect to be let go for unrelated reasons and coincidentally replaced by somebody willing to just falsify a log and get the truck rolling 30 minutes sooner every morning. If you can't pre-trip in a reasonable amount of time you might be retarded.
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Jul 30, 2016 20:27
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