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Continuing Education — "The Action Level!®"

VOLUME 8(6), June 2011
Journal of Occupational and Environmental Hygiene


Provide FULL NAME and EMAIL information below, then answer the questions and click "Submit".

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CASE STUDIES:

Solvent Substitution: An Analysis of Comprehensive Hazard Screening Indices
M. Debia, D. Bégin and M. Gérin

1. Which of the three comprehensive hazard screening indices
    studied takes volatility into account the most?

a. Psi air (PARIS II)
b. IRCHS
c. FHS (P2OASys)
2. Which of the three comprehensive hazard screening indices
    studied gives the greatest weight to volatility?
a. Psi air (PARIS II)
b. IRCHS
c. FHS (P2OASys)
Vehicle Design Influences Whole Body Vibration Exposures: Effect of the Location of the Front Axle Relative to the Cab
Ryan P. Blood, Patrik W. Rynell and Peter W. Johnson

3. According to the ISO standard governing time-weighted
    average (A(8)) whole-body vibration exposure (ISO 2631-1),
    what are the Action (AL) and Exposure Limits (EL) for an
    eight hour workday?

a. AL (9.1 m/s^1.75), EL (21 m/s^1.75)
b. AL (0.5 m/s^6), EL (0.8 m/s^6)
c. AL (0.5 m/s^2), EL (0.8 m/s^2)
d. AL (0.7 m/s^2), EL (1.15 m/s^2)
4. Whole body vibration exposure above the Action Limit is
    associated with increased risk of which of the following?
a. Compromised gastrointestinal function
b. Micro-fractures in the vertebral endplates
c. Low back pain
d. Compromised cardiovascular and
          cardiopulmonary function
e. All of the above
Development and Evaluation of a Semi-Empirical Two-Zone Dust Exposure Model for a Dusty Construction Trade
Rachel M. Jones, Catherine Simmons and Fred Boelter

5. Worker time-activity information is summarized in the model
    by the variable femit. True/False?

True
False
6. Which model parameters are based on the specific work
    scenario to be modeled?
a. femit
b. fR-to-T, PBZ
c. Ts
d. All of the above
e. A and C
Development of Solvent Exposure Index for Construction Painters
S.W. Wang, H. Qian, C. Weisel, C. Nwankwo and N. Fiedler

7. The reconstructed long-term solvent exposure by including
    which of the following additional information would have the
    most different exposure than the one developed solely based
    on the years of painting?

a. solvent air concentrations
b. protection factors of respirators
c. historical changes of solvent air concentrations
d. historical changes of respirator protection factors
e. All of the above
8. Which protection equipment provides the best protection
    against organic solvents when conducting spray painting?
a. dust mask
b. half-face chemical cartridge respirator
c. full-face chemical cartridge respirator
d. supplied air respirator
Short-Term Monitoring of Formaldehyde: Comparison of Two Direct-Reading Instruments to a Laboratory-Based Method
Deborah V.L. Hirst, Michael G. Gressel and W. Dana Flanders

9. Which of the following solutions would be most important
    in evaluating formaldehyde detection for samples above a
    validated range of 0.006 to 1.0 ppm?

a. samplers in series
b. samplers in parallel
c. pre- and post-pump calibration
d. select another method
10. The estimated sensitivity and specificity for each instrument
      appeared to depend on the target level of formaldehyde
      (0.1, 0.2, 0.3 ppm). True or False?
True
False
Effect of Exit Spacing in a Multiple-Jet Nozzle on Noise Levels at Audible Frequencies
Shaw-Ching Sheen

11. Generally speaking it appears that smaller exit diameters shift
      the sound spectrum toward:

a. high frequency side
b. intermediate frequencies
c. low frequency side
d. has no frequency-dependent effect
12. It was found that decreasing the exit spacing will shift
      the sound spectrum toward the low frequency side, which
      has been shifted toward the high frequency side by the
      use of smaller exits, and will increase the sound pressure
      levels at lower frequencies. 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 June 30, 2011.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on July 8, 2011.

 
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