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Continuing Education — "The Action Level!®"

VOLUME 2(8), August 2005
Journal of Occupational and Environmental Hygiene

Answer the questions below and click "Submit".

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CASE STUDIES:

Asbestos Exposures to Truck Drivers During World Trade Center Clean-Up Operations
Patrick N. Breysse, D'Ann L. Williams, Julie B. Herbstman, J. Morel Symons, Steven N. Chillrud, James Ross, Shannon Henshaw, Katherine Rees, Mike Watson, and Alison S. Geyh

1. From this study or cited reviews, which one of the following
    descriptors is inconsistent:

a. Truck drivers as subjects
b. Fibers less than 5 microns in length
c. Higher exposure on the rubble pile
d. Short fibers more toxic
2. Based on the evidence developed in this study, truck drivers working
    at the site would not be at an increased risk for asbestos-related
    disease due to these exposures. This evidence would be regarded
    as:
a. definitive
b. presumptive
c. improbable
Reducing Respirator Fit Test Errors: A Multi-Donning Approach
D.L. Campbell, C.C. Coffey, P.A. Jensen, and Z. Zhuang

3. A respirator that passes a test that it should have failed contributes
    to the ___________ error of the method.

a. alpha
b. beta
4. The time to conduct multi-donning tests ___________ time for
    a single-donning test.
a. exceeds
b. approximates
c. is much less than
Ototoxic Occupational Exposures for a Stock Car Racing Team: I. Noise Surveys
Luann E. Van Campen, Thais Morata, Chucri A. Kardous, Kristin Gwin, Kenneth M. Wallingford, Jacques Dallaire, and Frank J. Alvarez

5. Professional auto racing teams are required to follow OSHA
    occupational noise exposure regulations. True or False?

True
False
6. Because noise exposure levels in the race shop environment varied
    according to tasks,
a. Exposure levels were considered to be in the
          permissible range.
b. A task based exposure assessment method
         (T-BEAM) should be completed.
c. Hearing protection should be tailored to specific
          worker's needs.
d. Both b and c
Ototoxic Occupational Exposures for a Stock Car Racing Team: II. Chemical Surveys
Kristin K. Gwin, Kenneth M. Wallingford, Thais C. Morata, Luann E. Van Campen, Jacques Dallaire, and Frank J. Alvarez

7. During the second visit to Bristol Motor Speedway, where were the
    highest peak CO concentrations measured?

a. inside the race car during practice
b. left side of the toolbox in the pit area during
          practice
c. left side of the toolbox in the pit area during
          the race
d. left side of the toolbox in the pit area during
          the other racing series practice
e. inside the race car during the race
8. Engine exhaust from race cars is the greatest source of carbon
    monoxide during practice in preparation for a race. True or False?
True
False
Manganese Exposures During Shielded Metal Arc Welding (SMAW) in an Enclosed Space
Michael K. Harris, William M. Ewing, William Longo, Christopher, DePasquale, Michael D. Mount, Richard Hatfield, and Randall Stapleton

9. When performing Shielded Metal Arc Welding (or "Stick" welding),
    2,000 cfm ventilation in a confined or restricted space is nearly
    always adequate to prevent exposure to manganese above the
    ACGIH® TLV® of 0.2 mg/m3. True or False?

True
False
10. During welding operations the welder is the person most likely to be
      overexposed to manganese. True or False?
True
False


Deadline for answers is August 31, 2005.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on September 12, 2005.

 
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