HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
William K.
User Rank
Platinum
No Arc flash problems
William K.   10/29/2013 9:20:18 PM
NO RATINGS
One of the very major causes of accidental arc flash is that the people in the area did not really understand what they were doing. NOT in regard to arc flash protection, but they did not fully understand what the task involved to be done safely. I relize that this flys full in the face of a number of groups that claim that any individual can do any task, and if they fail it is somebody else's fault for not training them.

Accidental arc flash is separated from equipment failure arc flash in this area because equipment failure arc flash may also happen when nobody is doing any work related to the system creating the flash. Of course it does include faults caused by incorrect assembly of components at some previous time. But equipment failure arc flash can injure a passerby who was not involved at all.

And there are mechanisms available to provide a higher impedance to the very fast current rise that is charateristic of arc flash, and also the source of many of it's damaging effects. The mechanism is in the process of being patented, which is all that I can divulge about it. But it does work, I have seen the videos.

rhayashi
User Rank
Silver
Prevent ARC FLASH
rhayashi   10/29/2013 6:46:29 PM
NO RATINGS
This is a bad title. try again please.

Ann R. Thryft
User Rank
Blogger
Re: Eyesight can be damaged, too
Ann R. Thryft   10/29/2013 4:07:35 PM
Thanks for that info, Stewart. I will share it with him (and hope he uses it!).

Steward Hudson
User Rank
Blogger
Re: Eyesight can be damaged, too
Steward Hudson   10/29/2013 3:52:25 PM
NO RATINGS
I will try to share more about Arc Flash, here is another small thing that we did to educate people with Arc flash Hazard

http://visual.ly/5-extremely-surprising-arc-flash-facts

Ann R. Thryft
User Rank
Blogger
Re: Eyesight can be damaged, too
Ann R. Thryft   10/29/2013 3:44:43 PM
NO RATINGS
Thanks for replying, Stewart. I didn't know that stat, but I did know how serious even short exposure can be. My heart went in my throat when he told me. He's being pretty nonchalant about it, although he went through a lot of pain in the doctor's office with whatever drops they used to treat him. Thanks for your good wishes. I'm amazed, and unhappy, about the lack of standards and guidelines.

Steward Hudson
User Rank
Blogger
Re: Eyesight can be damaged, too
Steward Hudson   10/29/2013 3:21:18 PM
NO RATINGS
Agree!

95% of people struck by arc flash end up with permenant eye sight loss. Despite the guidelines provided by OSHA, industries and business owners have not created any specific safety guidelines within their facilities to protect and to safe their workers.

I hope all the good things for you newphew.

Ann R. Thryft
User Rank
Blogger
Eyesight can be damaged, too
Ann R. Thryft   10/29/2013 1:59:11 PM
NO RATINGS
Thanks for writing about this problem. My 24-year-old nephew, who's done a fair amount of welding maintaining and repairing the heavy lifting equipment he operates for his job, recently told me about an arc flash accident where nothing got damaged except his eyesight (temporarily it seems) since for some reason he wasn't wearing goggles. Naturally, I gave him a lecture about it, but what really surprised me was the lack of controls in place at his workplace. No one was insisting he wear goggles, and of course he wasn't experienced enough to realize how bad the hazard can be.

Philip Oakley
User Rank
Silver
Re: One More
Philip Oakley   10/29/2013 9:25:25 AM
It's better that the circuit is dead, rather than becoming a dead engineer.

It's interesting to compare the US and UK/European approaches to achieving safety. In the UK the use of personal protective equipment is a *last* resort (at least it's meant to be). That is particulalrly true when the consequences of an incident can be so high. The authorities would ask why the circuit wasn't made dead first.

Good equipment design, as you say, to divert any arc flash is also important when PPE can be cumbersome and ignored.

 

Nancy Golden
User Rank
Platinum
One More
Nancy Golden   10/29/2013 12:14:25 AM
Great article although I would add one more thing to the list:

Although this may fall under neccesary preventative measures since it should be in place up front to prevent occurences, I am just being a bit more specific: Design and equipment configuration choices that reduce arc flash hazard.

 



Partner Zone
Latest Analysis
From home enthusiasts to workers on the manufacturing floor, everyone's imagination is captured by the potential of 3D printing. Prototyping, spare parts creation, art delivery, human organ creation, and even mass product production are all being targeted as current and potential uses for the technology.
ABI Research, a firm based in the UK that specializes in analyzing global connectivity and other emerging technologies, estimates there will be 40.9 billion active wirelessly interconnected “things” by 2020. The driving force is the usual suspect: the Internet of Things.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
Solar and wind energy are becoming more viable as a source of energy on the electric grid. For decades, the major drawback to solar and wind was that they’re temperamental. A cloudy day kills solar and a still day renders the wind turbines useless. Automation tools, however, are providing a path to help these renewables become practical.
In honor of Earth Day, the National Security Agency has launched the STEM Recycling Challenge in Maryland schools to encourage kids to think about where the garbage they throw out every day actually goes. The agency has also introduced “Dunk,” a muscular blue cartoon recycling bin wearing shorts and sneakers.
More:Blogs|News
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 20 - 24, Taking the Internet of Things to the Cloud
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service