US Dept of Labor

Occupational Safety & Health AdministrationWe Can Help

OSHA Hazard Information Bulletins
Use of Incompatible Nitrogen Gas and Breathing Air Supply Lines as the Cause of Employees Fatalities


March 22, 1989

MEMORANDUM FOR:

REGIONAL ADMINISTRATORS

THRU:

  • LEO CAREY
  • Director
  • Office of Field Programs

FROM:

  • EDWARD BAIER
  • Director
  • Directorate of Technical Support

SUBJECT:

  • Health Hazard Information Bulletin: Use of Incompatible Nitrogen Gas and Breathing Air Supply Lines as the Cause of Employees Fatalities

CSHO'S should be aware of the hazardous condition and cite the appropriate OSHA standard 29 CFR 1910.134(d)(3) where air line couplings shall be incompatible with outlets for other gas systems to prevent inadvertent servicing of air line respirators with nonrespirable gases or oxygen.

Air Line Couplings must be used that operate only on breathing air and not nitrogen, oxygen or other gas systems. In addition, an appropriate respirator program, labeling and/or warning signs with training of employees in the hazard should be present.

Information has been received from our Jackson, Mississippi Area Office, Region IV regarding two chemical companies using similar couplings for both nitrogen gas lines and breathing air lines. Employees or contractor employees were killed when they connected their breathing air supply lines to the compatible nitrogen gas lines in violation of the OSHA standard 29 CFR 1910.134(d)(3).

Back to Top

Thank You for Visiting Our Website

You are exiting the Department of Labor’s Web server.

The Department of Labor does not endorse, takes no responsibility for, and exercises no control over the linked organization or its views, or contents, nor does it vouch for the accuracy or accessibility of the information contained on the destination server. The Department of Labor also cannot authorize the use of copyrighted materials contained in linked Web sites. Users must request such authorization from the sponsor of the linked Web site. Thank you for visiting our site. Please click the button below to continue.

Close