L1: Research Roundup Exposure Assessment/Chemical Hazards
Wed, 6/3: 9:15 AM - 10:15 AM CDT
Research Roundups
Research Roundups
Ernest N. Morial New Orleans Convention Center
Room: 291
CM Credit Hours: 1
Content Level
Intermediate
Core Competencies
Chemical Hazards
Exposure Assessment
Personal Protective Equipment
Session Availability
In-person
OnDemand
Virtual
Targeted Audience
Practitioner
Transfer of Knowledge
Case Studies
Lecture Only
Presentations
L1a: Occupational Exposures to Volatile Organic Compounds
This presentation shares findings from a multi-company study characterizing worker exposures to styrene and other volatile organic compounds (VOCs) during cured-in-place pipe (CIPP) installations using steam, hot water, and ultraviolet (UV) curing methods. Researchers measured personal and area air concentrations of styrene across various tasks, cure stages, liner sizes, and ventilation scenarios. Results showed that exposures were highest during steam and water curing, especially when workers were near uncured liners, and lowest during UV curing. Liner volume and company practices significantly influenced exposure levels. Ventilation and liner barriers helped reduce exposures, but additional controls may be needed to consistently keep exposures below recommended limits. This assessment provides new insights into exposure determinants and effective controls for styrene and VOCs in CIPP installations.
Co-Authors
A Foreman, Respiratory Health Division (RHD), NIOSH, Morgantown, WV
Lisa Kobos, RHD/NIOSH
Dru Burns, RHD/NIOSH
Eun Gyung Lee, RHD/NIOSH
Xiaoming Liang, RHD/NIOSH
Talia Alexander, RHD/NIOSH
Allyson W. O'Connor, RHD/NIOSH
Suzanne Tomasi, RHD/NIOSH
Dylan Neu, Division of Field Studies and Engineering/NIOSH, Cincinnati, OH
Marcia Stanton, RHD/NIOSH
Rachel Bailey, RHD/NIOSH
Lisa Kobos, RHD/NIOSH
Dru Burns, RHD/NIOSH
Eun Gyung Lee, RHD/NIOSH
Xiaoming Liang, RHD/NIOSH
Talia Alexander, RHD/NIOSH
Allyson W. O'Connor, RHD/NIOSH
Suzanne Tomasi, RHD/NIOSH
Dylan Neu, Division of Field Studies and Engineering/NIOSH, Cincinnati, OH
Marcia Stanton, RHD/NIOSH
Rachel Bailey, RHD/NIOSH
Acknowledgements & References
NIOSH [2023]. Health hazard evaluation report: evaluation of exposures to styrene during ultraviolet cured-in-place-pipe installation. By LeBouf RF, Burns DA. Morgantown, WV: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, NIOSH HHE Report No. 2018-0009-3334.
OSHA [1991]. Method 89: divinylbenzene, ethylvinylbenzene, styrene. Occupational Safety and Health Administration, https://www.osha.gov/sites/default/files/methods/osha-89.pdf.
OSHA [1991]. Method 89: divinylbenzene, ethylvinylbenzene, styrene. Occupational Safety and Health Administration, https://www.osha.gov/sites/default/files/methods/osha-89.pdf.
Author
Ryan LeBouf, PhD, CIH, ExxonMobil Biomedical Sciences Inc. (EMBSI) Spring, TXL1b: Benzene Sampling Assessment in Petroleum Crude Oil Operations
in February 2024 ACGIH updated the TLV for Benzene. The Benzene TLV was changed from 0.5 ppm for 8 hrs to 0.02 ppm. The company respiratory protection standard for benzene was based in the previous TLV. A project was conducted to do personal benzene sampling in different tasks to define the respiratory protection required for each task. 111 personal samples for exposure assessments were taken in 13 locations and more than 10 different tasks. This assessment was able to define the respiratory protection when needed and other control measurements when appropriated.
Co-Authors
none
Acknowledgements & References
none
Author
Dennys Ravenstein, CIH, ASP, CSP, Enbridge Inc. Edmonton, ABCAN