Goals and Objectives

  • Develops and offers exposure assessment tool, exposure assessment training, and scientific roundtables and other forums for presentation of exposure assessment studies.
  • Development of PDC (professional development course) that provides video and technical information then works with participants to apply these practical tools and strategies through a series of real-life exposure scenario workshops.

Project Teams

  • Bayesian User Group
  • Data Quality Objectives
  • Dermal Exposure
  • Mathematical Modeling of Exposures
  • Product Exposure Assessment
  • Professional Judgment in Exposure Assessment
  • 5 Year-Strategic Planning

TOOLS

(For the Practicing Industrial Hygienist)

The following software tools provide the practicing industrial hygienist with quick and easy access to the information necessary to evaluate exposure profiles and determine if the exposures are acceptable, not acceptable or if more data is needed to make the determination of acceptability. The tools are all free and are regularly updated. Several are available in multiple languages.

  • Basic Exposure Assessment and Sampling Spreadsheet
  • Functional Requirements for IH Systems​ provides basic and advanced requirements one may need in a computer database system to be able make informed exposure judgements. It is important to have a database tool that has the ability to incorporate qualitative and quantitative assessments.
  • IH MOD​ is a mathematical modeling Excel spreadsheet used for estimating occupational exposures. It is a supplement to the book “Mathematical Models for Estimating Occupational Exposure to Chemicals”. Multiple languages are available. Click on this link for IH MOD General Help.
  • IHMOD_2_0 includes the same mathematical models as in the still available (above) IH Mod. IH Mod 2.0 gives the user the choice between running the model in deterministic (point value parameters) or in Monte Carlo Simulation mode, with choices of distributions of parameter values right in MS Excel with no other software needed. A IHMOD_2_0_Support_File is also available. It includes useful information about IH Mod 2.0, and a spreadsheet tab to estimate liquid spill pool generation rates via the Hummel-Fehrenbacher equation, a units of measure conversion tool, examples of generation rate estimation, a “Bootstrap” procedure tool, a summary of approaches to estimate ALPHA for the exponentially decreasing emission rate models, and some links to other resources. Please note that the support file is evolving and will be updated periodically with new information. Check back here for updates.​​
  • IHSTAT an Excel application that calculates a variety of exposure statistics, performs goodness of fit tests, and graphs exposure data. Multiple languages are available. The book, “A Strategy for Assessing and Managing Occupational Exposures” is intended to accompany this. The links below will show you how to adjust the macros settings in your version of Excel, if needed.
  • IHSkinPerm is an Excel application for estimating dermal absorption. Basic knowledge of Excel is all that is needed to operate IH SkinPerm. IH SkinPerm is a work product of the AIHA Exposure Assessment Strategies Committee (EASC) and the Dermal Project Team (DPT) in collaboration with Wil ten Berg, author of the original SkinPerm model. Although various parameters and data outputs have been explained or defined in IH SkinPerm through comments tagged on individual fields, users are encouraged to read Chapter 13 of the Mathematical Models for Estimating Occupational Exposure to Chemicals, 2nd edition, AIHA Press, 2009, C. Keil Editor. This is a useful reference for understanding the science and terminology associated with skin permeation. Refer to the Help Manual for any questions.
  • Industrial Hygiene Data Interpretation App is a game you can download on your smartphone or tablet PC. This game illustrates the need for industrial hygienists to use statistical tools every time they interpret sampling data. The IH DIG is a fun app to help Exposure Assessors train their unconscious data interpretation algorithms to better match a Bayesian Likelihood analysis. The App is fun but a serious look at exposure assessment decision making. Download here, For iPad, For iPhone, For Android
  • IH Exposure Scenario Tool (IHEST) guides the assessor through the process of collecting general information about the workplace, specific scenario and agents(s), providing cues for measuring or estimating the important determinants of exposure such as generation and ventilation rates. It also prompts the user to specify the type of engineering controls; this information is needed later when making initial judgments by applying the Qualitative Exposure Assessment Checklist (see below).
  • The Qualitative Exposure Assessment Checklist (The Checklist) requires only four readily available pieces of information: The Occupational Exposure Limit (OEL); the Vapor Pressure of the pure chemical (VP) when the agent is gas or vapor form; the observed or reported worplace control measures (observed level of control) and the required level of workplace control (required level of control). It can be applied in just a few minutes using readily available information and has been shown to be significantly more accurate than subjective intuitive judgments. The user is referred to Chapter 6 of "A Strategy for Assessing and Managing Occupational Exposures", 4th Edition AIHA Press.

Industrial Hygiene Data Interpretation App

Game (IH DIG) that you can download on your smartphone or tablet PC. This game illustrates the need for industrial hygienists to use statistical tools every time they interpret sampling data. The IH DIG is a fun app to help Exposure Assessors train their unconscious data interpretation algorithms to better match a Bayesian Likelihood analysis. The App is fun but a serious look at exposure assessment decision making.

Resources