Conservative Application of Respiratory Protection Prevents Worker Exposure to Welding Fumes
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Type:  Lessons Learned

Publisher:  CH2MHill Plateau Remediation Company (Richland, WA - Hanford Site), Richland, WA - Hanford Site (CHPRC)

Published As:  Public

Date: 

Topics:  Biological Safety, Respiratory Protection, Occupational Safety and Health, Welding/Hot Work - Grinding

The recent lowering of the American Conference of Governmental Industrial Hygienist (ACGIH) Threshold Limit Value (TLV) for Manganese resulted in the use of respiratory protection equipment for welding work which did not require it in the past. The increased protection prevents Manganese exposures above the new limits and provides an opportunity to educate employees to change their perceptions regarding historical welding fume exposure.

Lessons Learned: Ensure changes in occupational exposure limits and controls are communicated to affected employees, including subcontractors. When enough representative data has been collected to validate the exposure concentrations, the appropriate level and type of controls should be tailored to the work being performed.

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