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Continuing Education — "The Action Level!®"

VOLUME 7(7), July 2010
Journal of Occupational and Environmental Hygiene


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CASE STUDIES:

A Proposal for Calculating Occupational Exposure Limits for Volatile Organic Compounds Acting as Sensory Irritants on the Basis of Their Physicochemical Properties
Marek Jakubowski and Slawomir Czerczak

1. About 40% of the Threshold Limit Values established by
    ACGIH® are based on:

a. cancer
b. increase of liver weight
c. sensory irritation effect
d. pulmonary edema
e. central nervous symptoms
2. As the degree of irritation increases the number of breaths
    in rodents:
a. increases
b. decreases
c. remains unchanged
PM2.5 and CO Concentrations Inside an Indoor Go-Kart Facility
Thomas Kim and Jeff Wagner

3. CO and PM2.5 concentration levels were higher in the
    breathing zone of go-kart drivers than they were at trackside.
    True or False?

True
False
4. Which of the following strategies are recommended to better
    control the go-kart facility's "track cloud" of pollutants?
a. Limit total number of go-karts racing in the
          facility at any given time.
b. Reduce engine emissions by replacing
          engines or control devices.
c. Improve ventilation exchange rate and
          minimize short circuits.
d. Lengthen periods between high-volume races.
e. All of the above
Surveillance of Washington OSHA Exposure Data to Identify Uncharacterized or Emerging Occupational Health Hazards
Don J. Lofgren, Carolyn K. Reeb-Whitaker and Darrin Adams

5. Inspections based on individuals filing reports of hazards
    with the State of Washington's OSHA program found
    approximately the same proportion of overexposures to
    airborne chemical substances as inspections initiated by
    the agency's targeting programs. True or False?

True
False
6. The surveillance of federal and state OSHA documented
    airborne chemical substance hazards may be a useful
    method for identifying uncharacterized or emerging
    occupational health hazards. True or False?
True
False
Evaluation of a Carbon Dioxide Personal Cooling Device for Workers in Hot Environments
Yang Zhang, Phillip A. Bishop, James Matthew Green, Mark T. Richardson and Randall E. Schumacker

7. Natural sweating is an effective route for body cooling.
    However, under which situation(s) might sweating result
    in a negative effect?

a. Over sweating to dehydration
b. Sweating while wearing impermeable
          protective clothing
c. Heavy work in hot conditions
d. Moderate work in moderate conditions
e. b, d and e
f. a, b and c
8. Which of the following is (are) an important concern(s)
    for any cooling technologies employed in the field?
a. Cooling power
b. Sustainable time
c. Weight and dimension
d. Mobility
e. All of the above
Permeation of Gasoline, Diesel, Bioethanol (E85), and Biodiesel (B20) Fuels Through Six Glove Materials
Jo-Yu Chin and Stuart A. Batterman

9. For gasoline, the Occupational Safety and Health
    Administration (OSHA) recommended exposure limit
    (REL) is 300 ppm. True or False?

True
False
10. Which of the following CPC materials is appropriate
      for handling fuels such as gasoline and diesel?
a. Nitrile
b. Neoprene
c. Latex
d. Viton
e. Cotton
f. Vinyl
A Comparison of Assessment Methods of Hand Activity and Force for Use in Calculating the ACGIH® HAL TLV®
Steve Wurzelbacher, Susan Burt, Ken Crombie, Jessica Ramsey, Lian Luo, Steve Allee and Yan Jiin

11. The HAL TLV® is defined by the relation of which of the
      following variables?

a. Normalized peak hand force and contact stress
b. Hand activity level and hand postures
c. Normalized peak hand force and hand activity level
d. None of the above
12. Different methods for assessing hand activity level produced
      similar HAL TLV® outcomes in this study. True or False?
True
False

Be sure FULL NAME and EMAIL information is provided at the top of this page before submitting your answers.


Deadline for answers is July 31, 2010.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on August 9, 2010.

 
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