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Thread: Safety with water tanks kills welder

  1. #1
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    Safety with water tanks kills welder

    Here is good reason to follow safety even if just water.
    This time it kills the welder.
    https://www.yourcentralvalley.com/ne...on-in-lemoore/

    Dave

  2. #2
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    Re: Safety with water tanks kills welder

    Damn!
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  3. #3
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    Re: Safety with water tanks kills welder

    Must have been methane in the tank that came out of the well with the water. You could see the flames as the tank went airborn.

  4. #4
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    Re: Safety with water tanks kills welder

    Dam, that's sad. Filled water and it still blew.
    I wonder what the circumstances were. All tank work we do is still consider a confined space.
    We always have readings taken before we do anything.
    It will be interesting to see what they find out.


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  6. #5
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    Re: Safety with water tanks kills welder

    1.5 million gallon tank went 70' into the air there was a lot of gas in that thing you would think with all the water quality testing that public systems are required to have they would have caught that.
    Do not argue with an idiot. He will drag you down to his level and beat you with experience.

  7. #6
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    Re: Safety with water tanks kills welder

    Quote Originally Posted by BD1 View Post
    Dam, that's sad. Filled water and it still blew.
    I wonder what the circumstances were. All tank work we do is still consider a confined space.
    We always have readings taken before we do anything.
    It will be interesting to see what they find out.


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    That's the way we were, plus a person outside to monitor everything and ready in case anything happens.
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  8. #7
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    Re: Safety with water tanks kills welder

    Quote Originally Posted by smithdoor View Post
    This time it kills the welder.
    The interesting thing is,
    He was NOT a welder/weldor

    He was a union carpenter.

    Hmmm ….
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  10. #8
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    Re: Safety with water tanks kills welder

    Quote Originally Posted by John T View Post
    The interesting thing is,
    He was NOT a welder/weldor

    He was a union carpenter.

    Hmmm ….
    Quote Originally Posted by John T View Post
    The interesting thing is,
    He was NOT a welder/weldor

    He was a union carpenter.

    Hmmm ….
    Article did say the contractor started welding then the tank blew. Maybe a carpenter that could weld ?? That could the reason to blew.
    The contractor could have been unqualified.
    That would explain it.


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  11. #9
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    Re: Safety with water tanks kills welder

    I agree
    Even your own water tank and hot water can have expolsey gas.

    If tank was full it would be ok or vent with air (after venting i use CO2 to remove most of oxygen too need to calculator the amount of gas need)

    But City using unlicensed Welder too.
    A buss box does not make any qualify to do welding.

    Dave

    Quote Originally Posted by BD1 View Post
    Article did say the contractor started welding then the tank blew. Maybe a carpenter that could weld ?? That could the reason to blew.
    The contractor could have been unqualified.
    That would explain it.


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    Last edited by smithdoor; 06-25-2021 at 12:44 AM.

  12. #10
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    Re: Safety with water tanks kills welder

    Quote Originally Posted by smithdoor View Post
    I agree
    Even your own water tank and hot water can have expolsey gas.

    If tank was full it would be ok or vent with air (after venting i use CO2 to remove most of oxygen too need to calculator the amount of gas need)

    But City using unlicensed Welder too.
    A buss box does not make any qualify to do welding.

    Dave
    Bottom line is- someone was not following confined space requirements ( constant gas monitoring). Its a shame as gas monitors are quite affordable these days- compared to the legal finger pointing and end cost outcome.

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  14. #11
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    Re: Safety with water tanks kills welder

    We are all trained in confined space where I was working. We even had our own equipment and meters.
    I talked with my owner and suggested to hired a dedicated confined space team. We do the work, but they setup and monitor conditions and tell us when it's safe. He agreed, especially since equipment and monitoring devices need to be certified and recalibrated.
    This way we know they have up to date devices.
    The group we use are paramedics and firemen.
    So they are well trained . You can't Outvavk price on safety.


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  15. #12
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    Re: Safety with water tanks kills welder

    Quote Originally Posted by BD1 View Post
    We are all trained in confined space where I was working. We even had our own equipment and meters.
    I talked with my owner and suggested to hired a dedicated confined space team. We do the work, but they setup and monitor conditions and tell us when it's safe. He agreed, especially since equipment and monitoring devices need to be certified and recalibrated.
    This way we know they have up to date devices.
    The group we use are paramedics and firemen.
    So they are well trained . You can't Outvavk price on safety.


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    Yep. This is my 24th year in the fire service. That gas monitor is my friend.

  16. #13
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    Re: Safety with water tanks kills welder

    Crazy
    Last edited by danielplace; 07-01-2021 at 08:40 AM.

  17. #14
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    Re: Safety with water tanks kills welder

    Safety is filling tank full water to top of tank or putting inert gas inside.
    I know how weld on tanks but I will never welded on tanks.
    Just one mistake is your last mistake in tank welding.

    If weld close to a gas tank I fill clear full of water. Just in case of a mistake.

    Dave

    Quote Originally Posted by danielplace View Post
    Crazy

  18. #15
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    Re: Safety with water tanks kills welder

    Not welding but a similar experience about 30 years ago when I was building condos. Our lender went broke right as we were doing final inspections on 30 unit condo project. Because the lender was in bankruptcy we were not able to finish the project for almost a year till they went through bankruptcy proceedings and were able to get another lender to take over so that we could actually sell them and transfer ownership. We went back into the units to see what the exact status was.

    We started powering up units and checking status of appliances. Someone turned on a dishwasher and after about a minute it exploded. We originally thought that somehow the gas line and a water line got crossed. The fire department responded and determined that the water heater was partially full of water plus probably some organic material and dirt. Over the year the water started producing methane from the organic material and when the methane met a spark from the dishwasher motor…BOOM.

    It blew the door completely off the dishwasher and expanded the tub to the point where we had to cut up the dishwasher to get it out.

    Fortunately, no one was hurt and no fire ensued.

    Lifes strange mysteries.

  19. #16
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    Re: Safety with water tanks kills welder

    Thanks for the video, unfortunately very often experience is the enemy of safety.

  20. #17
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    Re: Safety with water tanks kills welder

    I missed the part where it said he was welding inside the tank? If he was welding on the outside he would not have done a confined space entry.
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