common repair for me

admin

Some repairs I do on an almost regular basis. Here we have a diesel fuel cell from a semi. These come battered and war weary. I do as few as 2 a month. I have done as many as 6 or 7 in a one month period. They come rinsed out, but far from what we would call clean. Here is one I did a couple of days ago.The repair involves dealing with any surface contaminates including the ever so popular "guy once fixed it before" contamination. This would be some fool thinking her could just weld the crack and have it work. Not so and we get here a crack that was unseen by the original repairman. This one had a crack stemming form the middle of the weld outward about 75 degrees to it and no, the ding looks like it is older than the weld.To try and weld the crack and not use a patch is fool hearty. You will be chasing this until you think you have it done only to have it return to you accompanied by an unhappy customer. Also, notice the crease in the middle of the affected area, the patch needed to fit the form.With each and every repair of aluminum battered as much as this is, there is no "setting I can automatically use. I just set to 225amps and use a 3/32 2% tip, freq at 75, and the middle of my "max cleaning/deep penetration" knob on my thermal Arc 300GTSW. From there I make the needed adjustments as I go. This patch job required me to switch hands from one to the other at times with the filler rod and torch as well as which foot I used the pedal with. Here is the close-up of the weld. Try not to tear me apart too much. It was tested and held "air tight" to 45PSI by the customer, which is the standard at they use.Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:Do you grind out the crack, or drill the ends of the crack first, or do you just patch over it?   Just putting a patch on it won't stop the crack from growing will it?browndogwelding.com@welderassassinMy Blog on The Fabricatorfacebook.com/BrownDogWelding
Reply:Please forgive my omission, I drilled the ends of the crack with a 1/4" drill.Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:Originally Posted by ArgonWeldingPlease forgive my omission, I drilled the ends of the crack with a 1/4" drill.
Reply:"It was tested and held "air tight" to 45PSI by the customer, which is the standard at they use."45 PSI on a patched, damaged, thin wall tank??  Is this correct?Blackbird
Reply:Maybe they were trying to pop out the dents????One or two psi is normally more than enough for leak testing ....
Reply:Yes, 45PSI is what they set the regulator at. I watch them do it every time I deliver. After it passes the test, I go up front and give the real boss, his wife, the Invoice and she promptly pays me. Mine is not to ask why, but to do and die.As for thin wall tank, for the size, yes it is thin. This tank is 7' long and has two baffles and is made of 1/8" T6061 aluminum. This means that ever 1' 9" there is a support. How about one of you math wizards run it down for us.I imagine I will have a rim come in within the next 3 days, I average 2 a week. I will do a run down of one of those jobs for my next thread.Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:just wondering do you test the tanks your self before returning them I do alot of ally tank repairs at my work and never let one leave before I test itCreative metal Creative metal Facebook
Reply:Not the prettiest welds, but if they are holding that kind of pressure than you must be doing something right, : P : D.Miller 330 a/bp water cooledI believe in gun control, I hold my gun with two hands.  If you want to know why, click here.Buy American or bye America.
Reply:You are correct, pinjas, they are not the prettiest welds. Given the nature of aluminum when you can only clean outside and not the inside, it is what it is. Here is an example of my aluminum welds on a cleaner piece.It is a section of weld from a tank I made for someone. It had 16' of welding all the way around it.As for testing, I test them when I can. I am a one man shop and testing a 7' long tank by yourself if difficult at best. Fortunately the customer is only a few miles down the road and I can always run back to my shop and touch it up if needed. It has been a couple of years since one has leaked though. I used to do them right in their back lot before someone stole my truck with the Miller Trailblazer 250G and high freq unit. I could go on about the tools lost over labor day weekend and how I was too dumb to have insurance to cover them, but I have moved on from that. I do miss the Miller 8VS suitcase welder.Last edited by ArgonWelding; 11-13-2009 at 12:14 PM.Reason: answering both postsBill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:ArgonWelding, what are they using to pressure test the tanks, compressed air or compressed water to 45 PSI?Water is safe, if the tank leaks you get wet and do it all over again. If the tank fails you get wet and do it all over again.With air, if the tank leaks you do it all over again. If the tank fails you get DEAD and you don’t do it again.
Reply:I repair quite a few of those though out the year.  Sometimes I can weld up the crack or worn area, but patches are pretty common as well.  I dont pressurize them to 45 psi though.  I would guess around 15 which is still pretty high.  Using air at such a high pressure is pretty risky.  That's some violent stuff when it finds a good spot to tear out of.  We tested big tanker trucks and trailers with air up to 1.5 psi for aluminum and on upwards to 70 psi for s.s. filled with water.  On another note.. I talked to a customer that I did a recent repair for is going to give me a stack of old fuel tanks so I can continue making my aluminum bbq's out of.   Those things conduct heat great.Common sense in an uncommon degree is what the world calls wisdom.
Reply:the last tank i was involved in pressure testing was made of steel and was just tested to 1.5 psi. just enough to put soapy water on and mark the leakssyncrowave 180 sd
Reply:I will bring up the subject with Dale next time I see him. He may have an answer or he may say that's the way the old man taught him. I do know they are very careful. The plugs they use can pop out if not set properly and when they go, they go fast and bounce off the wall. I stand outside because that happened first time I delivered one. The 3" plug for the cap opening blew off and put a dent in the wall 20' away.Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:We build steel and Al. tanks and never put more than 12psi on them when we check them. I have seen guys srewing around and put 30 / 40 psi on a 1/4 steel tank with baffels and distort the tank so bad it would not sit flat any more. Very dangerous but you know how kids are. Miller 330 A/BP Bernard SS coolerMiller cst 250Miller Big Blue 251DCentury 210 Mig (first welder I bought)Hypertherm PowerMax 800Victor torch setRu Fong 31 MilAtlas lathe
Reply:And, Argonwelding, get your terminology straight, a "fuel cell", is what is put in a race-car, or a spaceship;   what you pictured, is just a simple fuel tank.  These, I just fix in the field, weld them up and go.   Don't waste time with cute little 45psi pressure tests.   "Fuel Cell" .....
Reply:I MIGHT do two of these a week, during silage harvest season,,,,,   but generally, if I do a second one, the driver is fired.    I mean, what kind of idiot, is gonna high-center a truck, and rip out the feed line??????  Over and over again????Who's your customer???   Is it a 48 state trucker???   Is it publicly traded??   Please let us know, so we don't do something stupid, and invest/buy stock in that company.
Reply:Mind if I ask how you clean the inside of the tanks so there is no risk of explosion/fire/etc? Everything I read says to stay away from welding tanks that had oil and/or fuel in them due to fire/explosion risk."hope for the best, prepare for the worst"Some of my equipment:Miller Millermatic 140Miller Syncrowave 200Lincoln PowerMIG 215
Reply:You wash them, then purge with inert gas.
Reply:toolman.......... The people I do the work for tests them at 45PSI. They are a company that has been in business here for over 20 yrs and that is how THEY do it. Not me, them.I got that many of you think that is too high of a pressure to test at but no one seems to be stepping up with any mathematical formulas to dispute the tanks ability to handle it.jsfab.......... They do not own the trucks, rent the trucks,or drive the trucks. They fix parts from the trucks and I do the welding when it is needed. Did you not read that part? As for my use of the words "fuel cell", to me a fuel cell was anything that holds fuel of whatever type for whatever mechanical device it supplies. After searching Wikipedia on the subject I found that a fuel cell is "A fuel cell is an electrochemical cell that produces electricity from a fuel tank". Being a big racing fan and having my own race car running the local track, I thought you were correct and that race cars had fuel cells. It fits what I define one as. I guess we both were ignorant on the subject. I will better perform due diligence next time before I post. I suggest you do the same.mello*vip......... Diesel will not ignite unless under pressure. I welded on 3000 gal fuel tank when I worked at a locomotive plant/repair shop in Idaho. The only thing we did was pump out enough fuel to be 1' under where the weld was happening. That equated to about 600 gallons of fuel in the tank while it was being welded.Bottom line is that the proof is in the pudding, and I got my pudding, it tastes good.This thread was about patching leaks in aluminum tanks and how it is difficult to do based on them being dirty, dinged up, and basically having limited redeeming qualities to weld to. I can just imagine where my next thread about repairing aluminum rims will go.Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:Bill, I can calculate anything you need to know about the forces in the tank walls for a given material and dimensions. What’s being pointed out is that there may be a flaw [dings and dents] in the tanks skin and that flaw may rip open with explosive force at anytime sending metal all over the place. I think it’s called a bomb. There is a tremendous amount of energy stored in a compressed gas. Another way to think of it is like a spring that has been compressed and tied down with a string. Sure the string will hold the spring but…..  that’s why water is used to test pressure vassals very little stored energy.If while testing at 45 psi a tank explodes, and someone gets injured or worse, the lawyers will be coming after the truck repair shop and who else? Let’s see, who welded the tank?  Just because they have been getting away with it the last 20 years will not hold up in court, just plan fool hearty. I’m sure there are OSHA rules too. CYA...Cover Your A$$Last edited by transit; 11-14-2009 at 04:52 AM.
Reply:Originally Posted by transitBill, I can calculate anything you need to know about the forces in the tank walls for a given material and dimensions. What’s being pointed out is that there may be a flaw [dings and dents] in the tanks skin and that flaw may rip open with explosive force at anytime sending metal all over the place. I think it’s called a bomb. There is a tremendous amount of energy stored in a compressed gas. Another way to think of it is like a spring that has been compressed and tied down with a string. Sure the string will hold the spring but…..  that’s why water is used to test pressure vassals very little stored energy.If while testing at 45 psi a tank explodes, and someone gets injured or worse, the lawyers will be coming after the truck repair shop and who else? Let’s see, who welded the tank?  Just because they have been getting away with it the last 20 years will not hold up in court, just plan fool hearty. I’m sure there are OSHA rules too. CYA...Cover Your A$$
Reply:Originally Posted by ArgonWeldingThis thread was about patching leaks in aluminum tanks and how it is difficult to do based on them being dirty, dinged up, and basically having limited redeeming qualities to weld to. I can just imagine where my next thread about repairing aluminum rims will go.
Reply:Bill, Tim under normal use I don’t think a tank with a ding would be a problem. It’s the testing that may go wrong. Filling the tank with water and testing to a higher pressure would do no harm, if it fails it would spring a leak. Ever see a truck tire explode?
Reply:Originally Posted by tnjindLooks like a good job you did.I don't make threads here for that very reason,smawgmaw ........ "Pour some on the ground and throw a flame to it and see!"How about you throw some one the ground and apply a torch to it, a real freakin' big one. It will take a temp of 350 degrees to ignite at one atmosphere. This applies to #1 Diesel. #2 requires substantially more heat. This is not flame temp, but fuel temp. since the fuel will not collectively raise in temp and only where it is being heated, you will not see a flame. This is why I removed the fuel to 1' below the area being welded. "In the diesel engine, only air is introduced into the combustion chamber. The air is then compressed with a compression ratio typically between 15 and 22 resulting into a 40 bar (about 600 psi) pressure compared to 8 to 14 bar (about 200 psi) in the petrol engine. This high compression heats the air to 550 °C (1,022 °F)."Thank you Wikipedia, AGAIN. Maybe some of you guys should bookmark it.Tank dimensions are 3' OD 7' Long 1/8" T6061 aluminum. Thanks to DDA52 for the idea to add Latin to my signatureLast edited by ArgonWelding; 11-14-2009 at 01:28 PM.Reason: tank dimensions and thx to....Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:Originally Posted by ArgonWeldingjsfab.......... They do not own the trucks, rent the trucks,or drive the trucks. They fix parts from the trucks and I do the welding when it is needed. Did you not read that part? As for my use of the words "fuel cell", to me a fuel cell was anything that holds fuel of whatever type for whatever mechanical device it supplies. After searching Wikipedia on the subject I found that a fuel cell is "A fuel cell is an electrochemical cell that produces electricity from a fuel tank". Being a big racing fan and having my own race car running the local track, I thought you were correct and that race cars had fuel cells. It fits what I define one as. I guess we both were ignorant on the subject. I will better perform due diligence next time before I post. I suggest you do the same.
Reply:Note the word "racing" in front of fuel cell. Hmmm, does this mean a fuel cell is as described unless preceded by the word "racing"? Got it. Thank you Broccoli1 for elaborating on my point. For someone to call me out on using the the term "fuel cell" incorrectly while doing the same is quite humorous. Thank you for putting into prospective. Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:Originally Posted by DDA52Ditto and ditto. I have been here longer than most and still won't post anymore projects. Just isn't worth it. Way too many internet experts.
Reply:Originally Posted by ArgonWeldingI imagine I will have a rim come in within the next 3 days, I average 2 a week. I will do a run down of one of those jobs for my next thread.
Reply:I can tell you how NOT to test a motorcycle oil tank for leaksI wanted to check an oil tank that had a press-in filler plug.It was easy enough to scrounge up some plugs for the threaded openings but the fill hole was more involved.I threaded a chunk of aluminum to accept a Schrader valve and then I epoxied the aluminum to the filler hole. The result was a sealed oil tank.I took the wife's floor washing bucket and filled it with water. It was big enough to hold the oil tank so I could check for bubbles after filling the tank with air. It was winter time so I filled it with hot water. I hooked an air line to the tank and filled it with ten pounds of air pressure and stuck the tank into the bucket. No bubbles. Good. Try twenty pounds. Still no bubbles. Good again. Now try thirty pounds.The bucket was on the floor of the garage and I was standing over it. At thirty pounds of air pressure, the thought...air bubbles...just barely entered my tiny mind when....WOOOOSSHHHHH....the epoxied plug blew through the side of the bucket. Most of the water went up, soaking me from the belt buckle to the top of my head. This happened just as the wife came walking down the driveway. As I stood there soaking wet in the middle of the frickin winter, she said "What the hell did you do to my bucket?".The moral of this story...ten pounds of pressure is enough. Thirty is too much.....and you'll have to buy a new bucket.
Reply:I don’t think I’ve been overly harsh pointing to the exposure. Now if you want to swim up stream and something goes wrong, you did it with your eyes wide open and, well you’re a big boy. No bashing, CYA.
Reply:Man you got away easy. At what point would you have stopped, 40, 50, 80, not a 100?How would you like a job in a cannon shell factory? Here is a hammer, tap the fuse. If the fuse doesn’t go off, the shell is defective.  The devil made me do it.Was that your Saturday nigh bath?Last edited by transit; 11-14-2009 at 06:51 PM.
Reply:Originally Posted by pinjasNot the prettiest welds,
Reply:Sigh......... I do not do the testing...... I Do Not Do The Testing..... I DO NOT DO THE TESTING......  Will you people please get off my a$$ for something someone else at another business does. I repaired the tank. I guess it was stupid of me to say what my customer tested it to.As for pretty, It was dirty aluminum and I had to weld left and right handed as well as switching from left to right foot pedal just because of the awkwardness of the part and location of the repair.As for the rims, I just will say that is going to be another forum and for any naysayer out there I will say that I DO NOT REPAIR RIMS FOR SEMI TRUCKS!!!!!!! I repair car rims. The kinds these kids today put on their cars to make them look like Hot Wheels.Bill LambertArgon WeldingABQ NMSic gorgiamus allos subjectatos nunc
Reply:Quoted by ArgonWelding:  "How about you throw some one the ground and apply a torch to it, a real freakin' big one. It will take a temp of 350 degrees to ignite at one atmosphere. This applies to #1 Diesel. #2 requires substantially more heat. This is not flame temp, but fuel temp. since the fuel will not collectively raise in temp and only where it is being heated, you will not see a flame. This is why I removed the fuel to 1' below the area being welded."  I have done so, and have thrown as little a flame as a match and although it did not go whoosh, the fuel (diesel) did catch fire and burn.  Been there done that.  Wish I had video of it.A few of my toys !LinuxMintManjaroMiller Roughneck 2E Lincoln WeldPak 100HTP MTS 160 Chicago Electric 80amp Inverter   Victor O/A
Reply:Originally Posted by ArgonWeldingSigh......... I do not do the testing...... I Do Not Do The Testing..... I DO NOT DO THE TESTING......  Will you people please get off my a$$ for something someone else at another business does. I repaired the tank. I guess it was stupid of me to say what my customer tested it to.
Reply:Originally Posted by ArgonWeldingmello*vip......... Diesel will not ignite unless under pressure. I welded on 3000 gal fuel tank when I worked at a locomotive plant/repair shop in Idaho. The only thing we did was pump out enough fuel to be 1' under where the weld was happening. That equated to about 600 gallons of fuel in the tank while it was being welded.
Reply:Originally Posted by DDA52Ditto and ditto. I have been here longer than most and still won't post anymore projects. Just isn't worth it. Way too many internet experts.
Reply:As am just getting a TIG machine rigged up, and interested in welding aluminum.  I found this very informative.  Thanks
Reply:Originally Posted by mla2ofusSame for me, DD !! I just feel good I can build something w/ quality and strength for myself and my friends. Don't need to have a public viewing of it.                              Mike
Reply:I'm with most you guys on the soap box mentality of this forum.  We've got a bunch of hobby welders who like to get up on their soap box and tell us what isn't safe.  Not every welding situation is going to be OSHA approved.  OSHA exists to protect stupid people from themselves.  Smart people can take a dangerous situation and minimize risk so that the job can be completed.  Stupid people can take a minimal risk situation and make it dangerous.  But...  The 45 psi in a non-pressure rated thin wall aluminum vessel with cracks and doubler type repairs is pushing the limits of what I would consider minimal risk.
Reply:Originally Posted by 76GMC1500I'm with most you guys on the soap box mentality of this forum.  We've got a bunch of hobby welders who like to get up on their soap box and tell us what isn't safe.
Reply:Pros, yes, leave it to the pros they always know what they are doing.  Wiring a facility for data communications to EIA/TIA 568 B standards is a snap. You may know the 568 as CAT 5 or 5e wiring that you’ve run around your home or shop. The standards sets instillation methods for rated performance, one of the limits is length, the total distance from the communication equipment to the desktop PC shall not exceed 100 meters [328 ft] we limit the cable run to 300 feet with the remainder, 28 feet for patch cords to make connections from the communication equipment to the patch panel and wall outlet to the PC.  Ethernet port, 6 ft patch cord, patch panel, 300 ft cable in the wall, wall outlet. 8 to 15 ft patch cord to the desk top PC, 6 +300 +15 = 321 ft. The whole job is spelled out, every nut and bolt, how the cables are bundled, the distance between supports, down to the compliance testing, the same for fiber.How do I get involved? A new $1.2 Billion train station along I-95 in Secaucus.  Network problems, poor performance and no performance. Get some test equipment on the cables and what shows up? Failure, over length, 400 to 600 ft. There were other problems, but we’ll stick to the length issues. These cables run in conduit along the train platform, that means that the conduits are over length too.  All it takes is a simple surveyor’s wheel to measure the distance. The installing contractor is required to give us the results of the compliance report, missing. Why?My report to my department heads triggered a complete audit of the site and I spent the next two weeks testing hundreds of copper and fiber cables in detail, the distance from the end of the cable outer jacket to the termination point shall not exceed one half inch, counted the twists in the cable, nit picked everything. The audit went to the Attorney General’s office and fraud charges were brought against the contractors. I was in court too.The contractors defense was that it works at JC Pennies and JB’s whole sale club, the test equipment is very expensive……..The project manager got his A$$ in a sling, because the electronic signs didn’t work.I’m sure that if the contractors [pros] would have come forward with the problems we could have worked things out. The contractors are bared for 5 years from state work. The fix was about $600,000 to replace the copper cable with fiber and other adjustments. On my projects, I work hand in glove with the contractors so things go smoothly and correctly. [CYA]Last edited by transit; 11-15-2009 at 08:38 AM.
Reply:OK, so they shouldn't be welding?just teasin.Tim Beeker.
Reply:In this case here we had a fuel tank repaired by a pro, tested by another pro and the thread was subsequently hi-jacked by pros argueing over the testing methods which has nothing to do with the repair which somehow got turned into pros bashing hobby guys.Amazing.
Reply:This is an open forum;  people can post comments as they wish.  Myself, I see problems, or potential problems, I have no problems asking questions, or commenting, as appropriate.If you can't take the heat, stay out.  Sensitive???   go join the knitting forum.   In fact, I bet those little old ladies, are even meaner than us welders.A board like this, is supposed to be educational.  Additional comments, bring up things, people can learn from.   Yes, there are some potential risks from overpressurizing tanks.  Is it not worthwhile to say this, mention that 45psi is NOT an industry standard, whatever Argonwelding's customer thinks?  Or is everybody just supposed to keep their mouths shut, just pound your back, "good job" like all the little blue guys were doing a while back, every time their hero posted something, whether or not it was good or mediocre work???Getting back on topic, anytime I do a tank, or any completely enclosed unit, I treat it as a possible bomb.  Somebody brings it to me, I don't care how many times, how many bibles, how many Korans, whatever, the guy swears on it only ever held water, or whatever.   I do not have personal knowledge , and I am not going to trust, or believe, or stake my life on, what some guy tells me.  It is easy enough, cheap enough, and fast enough, to inert a tank.   It is also very fast and easy, to stick an LEL/Oxygen probe in a tank, and insure it's safe.I have been working with equipment since I was a sophomore in high school.   I cannot remember how many times, somebody has accidently, or purposely in a couple cases, put gasoline, diesel, hydraulic oil, etc. into the wrong tank, since then.  I can also recall, years ago (before electronic engines), wasn't uncommon for guys to dump used motor oil into diesel tanks (used motor oil has explosive potential).   Here in California, I dump kerosene into diesel tanks, before heading up to Oregon or Nevada, in winter.   Some guys still fill fuel filters up with transmission fluid, when changing.   Return line, sends half right back to the tank.  Point is, whether or not these things can create problems, as the welder, you have NO IDEA what has been in that tank in the past.I like to KNOW, something is safe, and maybe $2 worth of inert gas, and a quick simple test, insures that for me.  Fact is, 99% of the time, you luck out, the conditions are such there are no problems.   I am a pro, 99% is not good enough for me, and me dead and a customer with a blown tank, does nobody any good.And then getting to the pressure test, I know you said, Argonwelding, it is not you that does this, but the fact is excess pressure proves nothing, and in an already damaged tank, sounds foolhardy.   I did some searches a few years ago on oil drums, fuel tanks, welding, etc., there were quite a few "incidents" that popped up.  Some of these things happened to "experts".  Maybe it became too routine?  Maybe cut a few corners, to save a few minutes?   Who knows, they are dead now.Last edited by jsfab; 11-15-2009 at 03:47 PM.
Reply:Originally Posted by SandyIn this case here we had a fuel tank repaired by a pro, tested by another pro and the thread was subsequently hi-jacked by pros argueing over the testing methods which has nothing to do with the repair which somehow got turned into pros bashing hobby guys.Amazing.
Reply:i have not posted anything on this forum for a while , and trust me , i have a lot of stuff i could post. reading this thread reminded me why i DONT a guy comes on here to share some of his work , which, he HAS OBVIOUSLY DONE BEFORE , only to be sh#@hammered over , of all things , whether its a "fuel cell" or, a"fuel tank" come on people, GET A LIFE!! now ,i'm not trying to stir the pot, but , i could not help myself. i've been reading posts like this one on here for years.FIRST , i dont care what you call the "vessel for which to store fuel" SECOND, its the customers tank, and , if they want to pump 45lbs. or 245lbs. of air ,water, or anything else they want to put in it , its their perogitive and has absolutely nothing to do with me.i've welded many tanks and 45lbs.is not way too much. overkill , maybe, but hey, its their tank. would i put that much air in it ? probably not , but ITS NOT MINE its amusing to me to see the level of hostility, and how fast a seemingly benign post could turn so venomous. simply amazing.now i'm sure i will get hammered for this , but i dont care. i may just sneak in one of my projects just for s's & g's, you know ,so i can take a lashing from someone who obviously has to build themselves up by tearing other people down. but then again, i'll probably just keep doing what i've been doing, watching ,quietly shaking my head in disbelief at the level of discord on some of these forums.but that said i have learned a lot from the REAL welderson this site.well that about sums it up ,i'm off to m-zone, they are much nicer than some of thepeople here
Reply:Originally Posted by small_e_900. . . The bucket was on the floor of the garage and I was standing over it. At thirty pounds of air pressure, the thought...air bubbles...just barely entered my tiny mind when....WOOOOSSHHHHH....the epoxied plug blew through the side of the bucket. Most of the water went up, soaking me from the belt buckle to the top of my head. . . .