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HF Funtimequote:Anhydrous HF leaked from the liquid valve as two workers were on top preparing to connect a Anhydrous Hydroflouric ISO Tank for offloading. They accidentally fully opened the quarter turn valve. An estimated 8 tons of HF was released. 5 people including the 2 workers perished, 18 responders, workers, reporter wound-up in the hospital, almost 3000 villagers from 2 villages downwind of the facility were treated for irritation, exposure. https://www.youtube.com/watch?v=6EpE3JHHoaI
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# ? Oct 16, 2015 20:16 |
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# ? Jun 6, 2024 15:17 |
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http://www.oregonlive.com/environment/index.ssf/2011/08/after_a_night_of_tension_confu.html More HF goodness..
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# ? Oct 16, 2015 20:25 |
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for fucks sake WD40 isn't a lubricant, it's just a water displacer, it's inferior to actual lubes for any lubricating application personally I like white lithium grease, that stuff's pretty good
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# ? Oct 16, 2015 20:26 |
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Drove up to a location to see this. Note the rig was also moving while he was climbing in there. Also no hard hat or fall arrest harnes Removed because I'm stupid and broke tables Darth Freddy fucked around with this message at 21:31 on Oct 16, 2015 |
# ? Oct 16, 2015 20:28 |
Until you timg that, I'll take your word for it.
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# ? Oct 16, 2015 20:30 |
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Darth Freddy posted:Drove up to a location to see this. I like how you found broken tables in an well field.
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# ? Oct 16, 2015 20:36 |
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Darth Freddy posted:Drove up to a location to see this.
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# ? Oct 16, 2015 20:36 |
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Adding a letter 'l' to the end of the identity string is superior to timg for imgur pictures.
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# ? Oct 16, 2015 20:37 |
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OhsH posted:So uh, how careful should i be with this bottle of 12 % hf acid i use for work?? Angela Christine posted:Adding a letter 'l' to the end of the identity string is superior to timg for imgur pictures.
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# ? Oct 16, 2015 20:43 |
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I like being able to click to somewhat-embiggen, or click the little size label to toally-embiggen, both in-place rather than in a new tab or navigating to imgur, though. Today I saw an elderly man wandering around on his peaked roof blowing leaves off with a leaf blower. He had no safety equipment whatsoever, and appeared to be alone.
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# ? Oct 16, 2015 20:45 |
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Raygereio posted:In all seriousness: Do you have a HF treatment & spill kits available and do you know how to use them? Not in this work van
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# ? Oct 16, 2015 20:50 |
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Leperflesh posted:Today I saw an elderly man wandering around on his peaked roof blowing leaves off with a leaf blower. He had no safety equipment whatsoever, and appeared to be alone. Stay safe blower man.
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# ? Oct 16, 2015 20:51 |
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OhsH posted:Not in this work van oh it's in a vehicle even better
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# ? Oct 16, 2015 20:52 |
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VectorSigma posted:oh it's in a vehicle even better Carpet cleaning can be fun when i know what i am working with
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# ? Oct 16, 2015 20:56 |
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OhsH posted:Not in this work van How many bodies do you have to dispose of? Pass my hommage to the Godfather.
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# ? Oct 16, 2015 20:56 |
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buttcoinbrony posted:12% is pretty strong so don't try to chug it all at once, and make sure you've got some food in your stomach. That's not what you do with hydrofluoric acid.
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# ? Oct 16, 2015 20:59 |
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Zopotantor posted:That's not what you do with hydrofluoric acid. I know what i am doing tonight
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# ? Oct 16, 2015 21:02 |
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OhsH posted:Carpet cleaning can be fun when i know what i am working with It's not a particularly strong acid in typical aqueous solution, it's the fluoride ion's ability to penetrate tissue and wreck everything along the way that's the problem. Transporting something like this in a vehicle only increases risk of spill, especially if safety considerations are not strictly followed.
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# ? Oct 16, 2015 21:04 |
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Raygereio posted:Don't see what's superior about it. An timg I can restore to the original size, or have it fill the browser window. Leperflesh posted:I like being able to click to somewhat-embiggen, or click the little size label to toally-embiggen, both in-place rather than in a new tab or navigating to imgur, though. Personal preference of course, but the imgur 'large thumbnail' (that's what the L does) is easily big enough to see the important part of most pictures and won't break any but the very flimsiest of tables. Timg is usually too small to see the important part of the picture. So as you're reading the thread you'll usually have to stop and click on the timg to embiggen it. Timg is fine for quoted images, because there the job is just to remind you what image the quoted poster was talking about, but it is usually much too small to be useful actually looking at the picture.
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# ? Oct 16, 2015 21:38 |
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From the SH/SC ticket thread:Judge Schnoopy posted:Smoke came in today...
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# ? Oct 16, 2015 21:59 |
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What purpose necessitates driving around in a van full of HF?
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# ? Oct 16, 2015 22:00 |
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c0ldfuse posted:What purpose necessitates driving around in a van full of HF? "Full of" might be an overstatement and i already said i clean carpets
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# ? Oct 16, 2015 22:02 |
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OhsH posted:"Full of" might be an overstatement and i already said i clean carpets What the hell do you use HF for in cleaning carpets? It's usually used to etch glass, to clean oxides off of stainless steal, to process hydrocarbons, and so forth. It's not usually turned to for stain removal, you'd want oxidizers or organic solvents for that.
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# ? Oct 16, 2015 22:13 |
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Phanatic posted:What the hell do you use HF for in cleaning carpets? It's usually used to etch glass, to clean oxides off of stainless steal, to process hydrocarbons, and so forth. It's not usually turned to for stain removal, you'd want oxidizers or organic solvents for that. In case someone stiffs them on the bill.
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# ? Oct 16, 2015 22:17 |
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Big Steveo posted:I have been doing a lot of work recently on 33KV and 66KV ACCB's (Alternating Current Circuit Breakers), modifying the protection on them - notably Pilot Wire Protection between substations. I did see that where some more critical systems have backup trip relays with backup power sources. I've also seen similar differential setups for things like motors (current into the stator = current going out of the stator into the wye point) and big transformers (accounting for phase shift and turn ratio, current into transformer = current out of transformer). It's neat stuff. One of the weirder things we have too is this zone control where you have a relay on a main providing power to a bus, and a bunch of relays watching the power flowing out of the bus. If you get a fault on one of the branches, the relay controlling that branch breaker that should interrupt the fault sends a signal to the relay controlling the main breaker to say "Hey, I see 15,000 amps going through my breaker, you probably see this too. I will try and stop this, don't open". If the main relay doesn't see that command, it's all like "Oh crap there's a fault on the bus I gotta open." I think that lets you set the protection much tighter on the main breaker that protects the bus so it doesn't need to wait around to see if something downstream stops the fault or not. You might not be allowed to answer this, but are you using SEL (Schweitzer Engineering Laboratories) relays? Because GE Multilins are flimsy pieces of crap. I've seen so many issues with GE meters and relays it's not funny. Nuclear Pogostick posted:personally I like white lithium grease, that stuff's pretty good Don't forget contact cleaner. For... well... contractors. Three-Phase fucked around with this message at 22:34 on Oct 16, 2015 |
# ? Oct 16, 2015 22:26 |
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Phanatic posted:What the hell do you use HF for in cleaning carpets? It's usually used to etch glass, to clean oxides off of stainless steal, to process hydrocarbons, and so forth. It's not usually turned to for stain removal, you'd want oxidizers or organic solvents for that. Rust removal!
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# ? Oct 16, 2015 22:42 |
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OSHA doesn't apply in this case but I think this is the appropriate place. The implement dealer came out to work on my father in law's combine yesterday. Tech was welding on the head with no-one else around and burned down several acres of unpicked corn. FIL called 911 three times, never did get an answer and had to drive to town to find someone on the fire department. God I miss the farm, that's more excitement than I've seen in a long time.
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# ? Oct 16, 2015 23:17 |
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Phanatic posted:The Ir-192 ones are spooky poo poo. There's like almost a half-dozen orphan source incidents where the Ir-192 source breaks off and gets lost and some poor dude finds it and sticks it in his pocket. Radiation is creepy, the whole concept of a small pea/pencil sized thing sitting somewhere on a site is actually killing everything anywhere nearby combined with the fact it doesn't cause any pain or any sensation at all until a while after the incident, when you can be told you took x radiation you're now very likely dead, even though you feel fine.
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# ? Oct 16, 2015 23:20 |
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ncumbered_by_idgits posted:Tech was welding on the head with no-one else around and burned down several acres of unpicked corn. I got a weather warning yesterday saying that dry weather and high winds could lead to fires out in corn and soy bean fields. Someone should have subscribed to some weather alerts!
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# ? Oct 16, 2015 23:34 |
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Three-Phase posted:
Nope, we use the Schneider Micom P521 relays for our pilot wire. Very reliable. http://www.schneider-electric.com/en/product-range/60745-micom-p521/ And for when we need overcurrent and directional overcurrent (not always needed except when we have a bulk supply point) we use the Schneider Micom P127. http://www.schneider-electric.com/en/product-range/60758-micom-p120--p121--p122--p123--p125--p126-and-p127 This relay takes input from CTs on the feeder and a VT inside the substation to determine an overcurrent. When these two relays are used together they each use a different tripping coil inside the accb. The P127 is placed on one end of a feeder only where the P521 is on both ends. We are in the process of replacing a lot of GEC Cag39 and Westinghouse C07 electromechanical relays with the P521 & P127.
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# ? Oct 17, 2015 00:01 |
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ncumbered_by_idgits posted:OSHA doesn't apply in this case but I think this is the appropriate place. Why the gently caress was the combine in the field when it was being welded on? When I used to do grass seed farming [which becomes dry as gently caress in the summer heat], whenever I'd break any machinery, and I did a few times, I'd just drive it off to the side of the field, into gravel or dirt, and we'd work on it there. The only time I really ever had to do maintenance that had a significant fire risk like that was grinding off cutting teeth on the swathers, which threw fountains of sparks everywhere, but we did that on cement-floored garages. I mean, unless the combine was so broken it was undriveable, but I guess I'd assume they'd put something down to protect the surrounding corn from the sparks/heat, or... poo poo, I don't know, tow it out? Perhaps I assume too much, this being the OSHA thread. e. Maybe I misread and they were out of the field, but still managed to catch the field on fire?
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# ? Oct 17, 2015 00:40 |
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OhsH posted:Rust removal! Huh. I managed to royally gently caress my carpet up with metal (lots of late night hand-filing and sawing in front of Netflix) to the point where steam-cleaning turned it crazy shades of red and green from the iron n copper oxides, we just binned it as a lost cause. It wasn't worth saving in the first place but I always kind of wondered how you'd tackle that.
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# ? Oct 17, 2015 00:48 |
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Magnets? I mean really, how often can "carpet filled with shards of metal" be a problem, and how is washing a carpet with hydroflouric acid going to help anyway? It'd just polish up those metal particles real good. I think if you sometimes do rust removal and hfl is your best option maybe it should be stored safely somewhere and only put in the truck when a customer specifically asks for rust removal and you decide using one of the most dangerous acids in the world to clean it up is the only option then maybe you bring that poo poo along, and charge a fuckload of money to do it. That's way too much to ask, isn't it. Just chuck a jug of 12% HFl into the van and don't worry about it. They sold it to you, so how dangerous could it be?
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# ? Oct 17, 2015 01:09 |
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One of my friends started working on a rig in dock as a safety guy recently and I recognised it from this thread as the same one that had the explosive decompression on it years ago. We had a really good conversation about it and holy poo poo it sounds loving horrifying when told from people who were there to see Honestly though, voted 5 would do again outside of the gore this is some top class informative rowdy trout business.
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# ? Oct 17, 2015 01:11 |
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I cleaned carpets for Sears and we never used any chemicals because our boss was cheap as gently caress. Even when we sold Scotchguard or pet deodorizer it was all just watered down poo poo that smelled strong enough that no one would question.
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# ? Oct 17, 2015 01:19 |
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HF in consumer carpet cleaner sounded pretty far fetched, so Google did not disappoint when it turned up Whisk Rust Stain Remover, an HF solution between 1-2% available at grocery, mass merchants, and other retailers nationwide. Just like they used to make in 1947! SDS Although I'm kind of interested in what the guy posting actually has, 12% sounds like it'd be a little beefier for the carpet's integrity. I wouldn't doubt a story about the owner knowing a guy and getting pickling grade HF on the side.
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# ? Oct 17, 2015 02:02 |
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zedprime posted:HF in consumer carpet cleaner sounded pretty far fetched, so Google did not disappoint when it turned up Whisk Rust Stain Remover, an HF solution between 1-2% available at grocery, mass merchants, and other retailers nationwide. Just like they used to make in 1947! SDS Hahaha, we sell that stuff in housewares/cleaning supplies where I work. Also I liked
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# ? Oct 17, 2015 02:13 |
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Leperflesh posted:Magnets? quote:copper oxides
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# ? Oct 17, 2015 02:16 |
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Flash Gordon Ramsay posted:Giant scaffolding collapse in Houston today. I guess when one section fails it all fails. The video is pretty amazing for just how much collapsed scaffolding there is. https://twitter.com/KHOUJackie/status/655133055061856256
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# ? Oct 17, 2015 10:44 |
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# ? Jun 6, 2024 15:17 |
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Methylethylaldehyde posted:Your smartphone and a piece of black electrical tape can make a decent gieger counter. Worried about your testicles being cooked and your bone marrow destroyed? There's an App for that!. This is not getting enough love. This is awesome!
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# ? Oct 17, 2015 13:39 |