AIHA | Protecting Worker Health www.aiha.org
APRIL 2017
Forecasting Occupational Exposur
es Using "Well Mixed Room" Models
Easy Modeling
CONTENTS
EASY MODELING
FORECASTING OCCUPATIONAL EXPOSURES USING “WELL MIXED ROOM” MODELS
If we don’t have the resources to sample or if we need to quickly answer questions about probable concentrations, modeling can provide estimates of potential exposures.
BY PAUL HEWETT

SOURCE REDUCTION
PRACTICAL ISSUES IN MINIMIZING WELDING FUME EXPOSURES
The first and best strategy is to control hazards at the source. In the case of welding, source reduction is most readily achieved by substituting a lower-emission welding process for a high-emission welding process.
BY MICHAEL J. KEANE

A WIDESPREAD CONCERN
IDENTIFYING AND ASSESSING PCBS IN THE BUILT ENVIRONMENT
Industrial hygienists are well suited to take a leading role in the anticipation, recognition, evaluation and control of polychlorinated biphenyls (PCBs), which have been identified in high concentrations in a number of building materials.
BY BART ASHLEY

CONTRIBUTORS
PAUL HEWETT, FEATURE AUTHOR
Paul Hewett, PhD, CIH, is a consultant with Exposure Assessment Solutions, Inc. in Morgantown, W.Va.
MICHAEL J. KEANE,
FEATURE AUTHOR
Michael J. Keane is a research chemical engineer in the Health Effects Laboratory Division, Exposure Assessment Branch of NIOSH.  
BART ASHLEY, FEATURE AUTHOR
Bart Ashley, CIH, CSP, is senior project manager with TRC Solutions in Honolulu, Hawaii.
ON AIHA.ORG
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The Synergist's mission is to provide AIHA members with news and information about he occupational and environmental health and safety fields and the industrial hygiene profession. The Synergist focuses on industry trends and news, government and regulatory activities, key issues facing the profession, appropriate technical information and news on association events and activities.
The Synergist's objective is to present information that is newsworthy and of general interest in industrial hygiene. Opinions, claims, conclusions, and positions expressed in this publication are the authors' or persons' quoted and do not necessarily reflect the opinions of the editors, AIHA, or The Synergist.


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