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Lawlee45239  
#1 Posted : 10 April 2012 10:40:24(UTC)
Rank: Super forum user
Lawlee45239

Morning all,

I was one site last week and the PC had stud welding ongoing, we are just a subby on that site and it didnt affect our works, but it didnt look to be controlled properly, has anyone delt with this kind of works before and can advice me (for my own information), would this type of welding be in the same class as normal rod welding? (Screens/ PPE/PPC/ signs/ fire watch)

I have never come across this type before.

Thanks
bob youel  
#2 Posted : 10 April 2012 11:09:23(UTC)
Rank: Super forum user
bob youel

A bit more info please so a better answer can be given --- smaller gauge mild steel basic stud welding does not give off the same arc problems as 'normal' electric arc welding because of the nature of the kit used and the way the metal is melted but we should still manage
Lawlee45239  
#3 Posted : 10 April 2012 12:01:52(UTC)
Rank: Super forum user
Lawlee45239

Hi ya,

Is was electric stud welding, to a metal floor (on the first floor), bolt was put into the hand held welding unit, placed onto the ground, and in a few seconds the bolt was welded.

Chris Cahill  
#4 Posted : 10 April 2012 12:10:02(UTC)
Rank: Forum user
Chris Cahill

As with any welding operation anti flash glasses at least, correct gloves, fire precautions (not near flammables etc and a fire extinguisher in place) probably a PTW for hot work.
Don’t stand or use on wet surfaces ,ensure correct power supply and safe leads, with good connections,do not look at arc and do not use near bystanders (most stud guns shield the flash well but there is still some risk of arc flash)
And obviously any usual safety precautions on site(ie suitable PPE, use by trained operators used correctly as manufacturer intended) Stud welding is minimal flash and sparks but the risks still need to be controlled. Should all be detailed in the MS/RA.
Lawlee45239  
#5 Posted : 10 April 2012 12:16:57(UTC)
Rank: Super forum user
Lawlee45239

Chris Cahill wrote:
As with any welding operation anti flash glasses at least, correct gloves, fire precautions (not near flammables etc and a fire extinguisher in place) probably a PTW for hot work.
Don’t stand or use on wet surfaces ,ensure correct power supply and safe leads, with good connections,do not look at arc and do not use near bystanders (most stud guns shield the flash well but there is still some risk of arc flash)
And obviously any usual safety precautions on site(ie suitable PPE, use by trained operators used correctly as manufacturer intended) Stud welding is minimal flash and sparks but the risks still need to be controlled. Should all be detailed in the MS/RA.


Hi ya, so basically take it as normal rod welding. I did think that, and did note it in my site inspection to the PC. Thanks. I was a bit unsure as I had never seen such stud welding. Thanks again for your help, and I shall know better if I come across this again.
Chris Cahill  
#6 Posted : 10 April 2012 12:33:22(UTC)
Rank: Forum user
Chris Cahill

It is not as harsh as normal Arc ( Rod) MMA welding , Lots less arc flash, less sparks emitted , only a localised heat source , if done correctly minimal marking and colouring to other areas of material.
saying that some controls are needed but there is a lot more control of the heat source in stud welding and the heat does not radiate out as much as with MMA welding, typically because it is a short sharp high amperage arc to melt a pool in one spot. So yes controls as previously stated but it is not like MMA welding
Lawlee45239  
#7 Posted : 10 April 2012 13:25:40(UTC)
Rank: Super forum user
Lawlee45239

Chris Cahill wrote:
It is not as harsh as normal Arc ( Rod) MMA welding , Lots less arc flash, less sparks emitted , only a localised heat source , if done correctly minimal marking and colouring to other areas of material.
saying that some controls are needed but there is a lot more control of the heat source in stud welding and the heat does not radiate out as much as with MMA welding, typically because it is a short sharp high amperage arc to melt a pool in one spot. So yes controls as previously stated but it is not like MMA welding



Thank you.
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