American Conference of Governmental Industrial Hygienists (ACGIH®), your industrial hygiene, environmental, occupational health and safety resource that advances worker health and safety and offers books, conferences, and education and training courses.

Site MapContact UsFAQsHome


Search  
Advanced

AboutProductsMembershipEducationTLV/BEI ResourcesFoundationResources
Sign up for the ACGIH.ORG Mailing List

Products


Continuing Education — "The Action Level!®"

VOLUME 5(9), September 2008
Journal of Occupational and Environmental Hygiene

Answer the questions below and click "Submit".

Full Name:
E-Mail:

CASE STUDIES:

Occupational Exposures Associated with Petroleum-Derived Products Containing Trace Levels of Benzene
Pamela R.D. Williams, Julie M. Panko, Ken Unice, Jay L. Brown and Dennis J. Paustenbach

1. The benzene content of petroleum-derived products
    declined to < 0.1% v/v after the late 1970s and early 1980s.
    True or False?

True
False
2. No industrial hygiene data are available to characterize
    worker exposures to benzene during use of petroleum-derived
    products. True or False?
True
False
Filtration Performance of NIOSH-approved N95 and P100 Filtering Facepiece Respirators Against 4 to 30 Nanometer Size Nanoparticles
Samy Rengasamy, William P. King, Benjamin C. Eimer and Ronald E. Shaffer

3. Respirators capture particles in a manner similar to a sieve
    device. True or False?

True
False
4. Most penetrating particles are the very small particles.
    True or False?
True
False
Comparison of Task-based Exposure Metrics for an Epidemiologic Study of Isocyanate Inhalation Exposures among Auto Body Shop Workers
Susan Woskie, Dhimiter Bello, Rebecca Gore and Meredith Stowe

5. The paper by Woskie et al. expressed airborne isocyanate
    exposure levels as µg NCO/m3 for all forms of isocyanate
    combined. This concentration can be compared to the United
    Kingdom Health and Safety Executive 8-hour TWA or STEL.
    True or False?

True
False
6. The paper by Woskie et al found that misclassification of
    exposure using job alone in auto body shops was due to:
a. cross-over of tasks in jobs
b. lack of use of respirators by some workers
          during painting
c. different exposures for some tasks depending
          on shop characteristics
d. all of the above
Predicting Benzene Vapor Concentrations with a Near Field/Far Field Model
Mark Nicas and John Niehaus

7. One advantage of the near field/far field model for a benzene-
    containing liquid source is that it permits benzene exposure
    estimates involving sets of factors (volume of use, ventilation
    conditions) for when exposure monitoring has not been
    conducted. True or False?

True
False
8. In the near field/far field model, the short-term near field benzene
    exposure concentration is:
a. positively correlated with the benzene
          evaporation rate constant
b. negatively correlated with the random air speed
c. negatively correlated with the near field volume
d. all of the above
Can a Transitional Work Grant Program in a Workers Compensation System Reduce Cost and Facilitate Return to Work?
K.K. Dunning, K.G. Davis, S.E. Kotowski, T. Elliott, G. Jewell and J. Lockey

9. Results from this study suggested that companies that
    enrolled in the TWG program consistently experienced the
    following outcomes compared to companies that did not enroll
    in the TWG program:

a. reduced number of long-term claims for
          large companies
b. decreased indemnity costs for large and
          small/medium companies
c. days lost
d. both a and b
10. The effectiveness of the TWG program varied by industry
      and size of the company. True or False?
True
False
Formaldehyde Exposure in U.S. Industries from OSHA's Air Sample Data
Jérôme Lavoué, Raymond Vincent and Michel Gérin

11. Review of the Integrated Management Information System
      (IMIS) reveals an upward bias in exposure data recorded
      following employee complaint or referral as compared to
      data generated during planned visits. True or False?

True
False
12. As modeled in the IMIS, formaldehyde short-term exposure
      levels in U.S. industries over the last 20 years appeared
      generally highest in the following industries:
a. construction and paper mills
b. agriculture and primary metal industry
c. wood panels and embalming


Deadline for answers is September 30, 2008.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on October 13, 2008.

 
MEMBERS ONLY: Link to FREE Online Access to JOEH

MEMBERS ONLY: Link to Applied Archives

Register for "The Action Level!®"

Answer "The Action Level!®" Questions

View "The Action Level!®" Answers

JOEH Feedback Form

JOEH Helpline Info

Submit an Article

 

Last update on 07/14/2008. Questions or problems? Please contact us. © 2013 American Conference of Governmental Industrial Hygienists, 1330 Kemper Meadow Drive, Cincinnati, Ohio 45240, 513-742-2020. ACGIH® and related marks are marks of the American Conference of Governmental Industrial Hygienists. All Rights Reserved. Terms of Access. ACGIH® Privacy Policy. Site Map.