Safe Distance for Arc Flash

[The_Yellow_Ardvark]

I wouldn't even wipe my **** on the scum.

on this?

 

[8ob]

View attachment 329531 on this?

I would happily floss with Lindas thong, you can keep the other one

Bob

 

[roblane65]

Don't hold back there Bob .

 

[The_Yellow_Ardvark]

Don't hold back there Bob .

It is easy to floss the teeth before you put them in the water glass over night

 

[Pete.]

If you can see it, it's a safe bet that it's harmful to the naked eyes. You'd never risk assess it around "safe distance" - it would either be barriers/PPE, or a proper remote area.

Exposure doesn't automatically mean harmful exposure though there comes a point where the exposure level is so low that the body can absorb it without harm. UV light is all around us in the daytime (about 3.3% of sunlight at our planet's surface is UV). As with all light, the intensity drops off with distance according to the inverse square law so a person welding with their eyes half a metre from the arc is getting 400x the UV exposure to a person 10m away.

 

[Popcorn]

This discussion always reminds me of:

 

[eLuSiVeMiTe]

Exposure doesn't automatically mean harmful exposure though there comes a point where the exposure level is so low that the body can absorb it without harm. UV light is all around us in the daytime (about 3.3% of sunlight at our planet's surface is UV). As with all light, the intensity drops off with distance according to the inverse square law so a person welding with their eyes half a metre from the arc is getting 400x the UV exposure to a person 10m away.

 

[Pete.]

View attachment 329538

Yes you definitely have to consider reflected light when considering exposure. Good point.

 

[pressbrake1]

A good few years ago I had the misfortune to have to do welding.
I was welding away in my workshop and I felt like I was being watched.
I stopped and looked and to my horror a woman was standing in my doorway with a child. She exclaimed she was showing her son the pretty lights . I politely explained the dangers.
That was a big problem with being on a industrial estate with some retail premises drawing in the public. People would just walk in but you don’t really want to be using machines behind a locked door

 

[Barking Mat]

This distance is acceptable.

 

[Bki26]

You forgot the shorts Slim.

And the flipflops

 

[aesmith]

If doing for an emplyier, seek their H&S advice.

It's just myself on our property. We don't have neighbours closer than 400m and there's no line of sight in any case. The risks would be family members wandering about, or visitors like the postie or other delivery drivers, and people passing on the track alongside our ground. It's just a bit of a shame the garage is right near our driveway and a bit lower.

 

[The_Yellow_Ardvark]

It's just myself on our property. We don't have neighbours closer than 400m and there's no line of sight in any case. The risks would be family members wandering about, or visitors like the postie or other delivery drivers, and people passing on the track alongside our ground. It's just a bit of a shame the garage is right near our driveway and a bit lower.

Get a welding curtain, simple and cheap.

 

[slim_boy_fat]

Get a welding curtain, simple and cheap.

Then they'll come peeping round the edge, "just to see what you're doing" - you can't fix stupid.....

 

[slim_boy_fat]

This thread took a swift diversion for a minute there - from arc eye/UV light exposure to Fox & Lusardi.

 

[8ob]

This thread took a swift diversion for a minute there - from arc eye/UV light exposure to Fox & Lusardi.

Don’t worry about it John, we will be on how to paint a house before the end of the day with a few gaz tube vids thrown in as a good measure



Bob

 

[Munkul]

Exposure doesn't automatically mean harmful exposure though there comes a point where the exposure level is so low that the body can absorb it without harm. UV light is all around us in the daytime (about 3.3% of sunlight at our planet's surface is UV). As with all light, the intensity drops off with distance according to the inverse square law so a person welding with their eyes half a metre from the arc is getting 400x the UV exposure to a person 10m away.

I know you are right, but its hard to put a fixed working distance in a formal RAMS when you're talking about the general public and 3rd parties. The intensity varies massively when comparing say a 350 amp MIG spray arc to a 50 amp TIG arc, as well as positions etc, so you would have to weigh on a case by case basis.
The sun, after all, is 93 million miles away and that's not a safe distance for the eyes

 

[Brad93]

I'm pretty certain now that safety glasses nor the clear plastic found in Speedglas Adflo FX actually stops the UV.

I've got arceye again today, wore my FX helmet hundred percent of the time, only lifting the ADF to look through the clear screen at the deposited weld.

 

[bourbon]

Don’t worry about it John, we will be on how to paint a house before the end of the day with a few gaz tube vids thrown in as a good measure



Bob

I painted the plywood panels of my van yesterday, Does that count?

 

[pedrobedro]

I painted the plywood panels of my van yesterday, Does that count?

What paint did you use ? Damn I fell for it