All MetalShaping

Go Back   All MetalShaping > General Metal Shaping Discussion > Shop Safety
  Today's Posts Posts for Last 7 Days Posts for Last 14 Days  

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 06-13-2015, 07:29 AM
bluebeard#1 bluebeard#1 is offline
Member
 
Join Date: Apr 2013
Location: Holmview,southeast Queensland Australia
Posts: 53
Default Electro magnetic fields

G'day folks,
I have a question for the electrics guy's.
I recently had a defibrillator put in my left shoulder blade after a heart attack and now the quack said no more welding, I've been sent a link to a site that said they had done tests with the electro magnetic fields and found if you stay away from the machine itself it's ok and safe to use. My question is as follows is there the same field at the point where the welding rod or the wire from the mig contacts the parts being welded together, I would hazard to guess that a high frequencey tig may have one at the tip once you turn it on to start an arc. I don' particually want to find out by just going ahead and giving it a go because it is like being hit by a lump of 4 x 2 full swing or the same as when they use the paddles to revive some one.

Bluebeard.
__________________
John Finch
Reply With Quote
  #2  
Old 06-13-2015, 08:55 AM
hot rivet hot rivet is offline
Member
 
Join Date: Feb 2012
Location: Gloucester UK
Posts: 296
Default

With respect to hf ac/dc tig there is quite a field to sensitive electronics, i once had a personal attack alarm 6' away from my tig torch go off every time i struck an arc. The question is if your defib is really that sensitive. Gas welding might be the way to go from now on! Hope your doing ok after the procedure a friend of mine had the same on 8th june.
__________________
Paul
Reply With Quote
  #3  
Old 06-13-2015, 11:06 AM
weldtoride weldtoride is offline
Member
 
Join Date: May 2009
Location: Northern Illinois
Posts: 896
Default

Tread very carefully here. Years ago Lincoln put cautions in their literature regarding keeping both work leads to the same side of the operator, i.e., to avoid putting one lead on either side of you as you weld, as that could put you inside an electromagnetic field.

This caution had nothing to do with pacemakers, just a prescribed procedure for all welders. Emfs are present, and stronger under certain work lead routing.

Decades ago, I was taught the old SMAW (stick) technique of supporting the electrode lead by wrapping it around my arm or over my shoulder, no longer a recommended practice.

Read here on page 5: https://www.lincolnelectric.com/asse...ature/E205.pdf
__________________
Mark from Illinois

Last edited by weldtoride; 06-13-2015 at 11:17 AM.
Reply With Quote
  #4  
Old 06-13-2015, 04:58 PM
crystallographic crystallographic is offline
MetalShaper of the Month October '14 , April '16, July 2020, Jan 2023
 
Join Date: Dec 2010
Location: Western Sierra Nevadas, Badger Hill, CA
Posts: 4,388
Default

"If you have a pacemaker - Anything generating EM fields should be avoided.

TIG, Plasma Cutter, Induction Furnace.... MIG, stick arc ...



All produce enough ElectroMagneticInduction to cause issues."
__________________
Kent

http://www.tinmantech.com

"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.
Reply With Quote
  #5  
Old 06-13-2015, 05:27 PM
sblack sblack is offline
Member
 
Join Date: Sep 2011
Location: Montreal
Posts: 382
Default

But you can still do just about anything with a torch. Nothing wrong with Old School. I'm glad you are still with us,
__________________
Scott in Montreal
Reply With Quote
  #6  
Old 06-14-2015, 02:30 AM
Marc Bourget Marc Bourget is offline
Member
 
Join Date: May 2013
Location: North Ca
Posts: 716
Default

To expand slightly on Kent's post, the simple fact that current is passing along a wire generates a magnetic field along the wire.

mjb
__________________
Marc
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 10:55 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.