Today's News / Safety in the Construction Industry

Study: LEVs can reduce exposure to welding toxins

A new study from the Center for Construction Research and Training (CPWR), shows that the use of Local Exhaust Ventilation (LEV) can significantly reduce exposure to toxins found in welding fumes.

The paper, Local Exhaust Ventilation for the Control of Welding Fumes in the Construction Industry – A Literature Review, was written by Michael Flynn and Pam Susi and published in the Annals of Occupational Hygiene, 2012.

Although existing scientific literature on the effectiveness of LEV to limit worker exposure to contaminants in airborne welding fumes, especially in construction, is extremely limited, Flynn and Susi determined that the proper use of LEV can reduce contaminants like manganese and hexavalent chromium by as much as 50% or more, bringing exposures below NIOSH recommended exposure limits and ACGIH threshold limit values.

Other key findings:

• Effective use of LEV to control fume exposures can be more difficult in construction because of the mobility of the work, but it’s possible as proven by cited studies. With LEV systems, workers must take care to reposition the fume exhaust hood to keep it as close to the welding fume source as possible.

• Fume extraction guns – welding guns with built-in exhaust systems – can mitigate these problems. However, more study is needed to determine whether the added weight of the instrument or unintended interference with shielding gases interfered with the quality of the weld produced.

Did you enjoy this article? Click here to subscribe to ISHN.

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

Scenes from the World of Safety

Sights, signs & symbols from the National Safety Congress & Expo held in San Diego, CA, September 15-18

3/31/15 11:00 am EST

Changes to NFPA 70E® – What You Need to Know

NFPA ® for Electrical Safety in the Workplace is revised every three years, providing the most up-to-date requirements for safe work practices to reduce exposure to electrical hazards. This program analyzes several significant changes in 70E ® and is designed to clarify the reasoning behind the changes, and assist in determining how the changes impact employees and employers.

ISHN Magazine

ISHN0315_cover.jpg

2015 March

Check out ISHN's March issue, which features articles about moisture wicking technology, toxic gas detection and fall protection.

Table Of Contents Subscribe

THE ISHN STORE

M:\General Shared\__AEC Store Katie Z\AEC Store\Images\ISHN\safetyfourth.jpg
Safety Engineering, 4th Edition

A practical, solutions-driven reference, Safety Engineering, 4th edition, has been completely revised and updated to reflect many of today’s issues in safety.

More Products

For Distributors Only - January 2015

FDO JAN 2015 COVER

 

For Distributors Only is ISHN's niche brand standard-sized magazine supplement aimed at an audience of 2,000 U.S. distributors that sell safety products. Circulation only goes to distributors. 

CHECK OUT THE JANUARY 2015 ISSUE OF FDO HERE

STAY CONNECTED

Facebook logo Twitter YouTubeLinkedIn Google + icon

ishn infographics

2012 US workplace deathsCheck out ISHN's new Infographic page! Learn more about worker safety through these interactive images. CLICK HERE to view the page.