C9: Structured Deterministic Model 2.0 Addressing Common Challenges in Occupational Hygiene
Mon, 6/1: 2:00 PM - 3:00 PM CDT
Education Sessions
Education Sessions
Ernest N. Morial New Orleans Convention Center
Room: 388
CM Credit Hours: 1
Description
The SDM 2.0 is a user-friendly, Microsoft Excel-based deterministic model that employs an ordered, systematic approach to estimating occupational exposures to chemicals and estimating their related health risks. The algorithms employed in this model facilitate the assessment of volatile and semi-volatile pure chemicals and chemical mixtures, as well as fibers, particles and aerosols. The output is a point estimate of the 95th percentile concentration of the group exposure profile, the exposure control category and categorical classification of health risks.
Recent model updates include expanded functionality that makes it easier to save and recall previously entered chemical formulations. The inclusion of a Henry's Law calculator makes it convenient to apply either Henry's Law to assess chemical mixtures. The Raoult's Law calculator provides the adjusted vapor pressure of the overall chemical mixture and the partial pressures and mole fractions of its components. The output from either calculator can be used to inform the Hummel equation (in IHMOD 2.0) to estimate the generation rate of chemical mixtures and their constituents, facilitating both deterministic and probabilistic modeling of exposures to chemical mixtures. The SDM2.0 also calculates chemical composition changes associated with weathering, a process whereby more volatile components evaporate at a faster rate than less volatile components, causing the composition of the chemical mixture to change over time.
Recent model updates include expanded functionality that makes it easier to save and recall previously entered chemical formulations. The inclusion of a Henry's Law calculator makes it convenient to apply either Henry's Law to assess chemical mixtures. The Raoult's Law calculator provides the adjusted vapor pressure of the overall chemical mixture and the partial pressures and mole fractions of its components. The output from either calculator can be used to inform the Hummel equation (in IHMOD 2.0) to estimate the generation rate of chemical mixtures and their constituents, facilitating both deterministic and probabilistic modeling of exposures to chemical mixtures. The SDM2.0 also calculates chemical composition changes associated with weathering, a process whereby more volatile components evaporate at a faster rate than less volatile components, causing the composition of the chemical mixture to change over time.
Learning Outcomes
Upon completion, the participant will be able to:
• Demonstrate how to retrieve previously entered and saved mixtures formulations in the SDM2.0 2.
• Determine how to use Henry's versus Raoult's Law when assessing chemical mixtures using the SDM 3.
• Summarize how weathering can change the chemical composition of a mixture and related exposure.
• Demonstrate how to use the SDM 2.0 to calculate changes in chemical composition and exposure associated with weathering.
• Apply the SDM 2.0 to related real-world scenarios.
• Demonstrate how to retrieve previously entered and saved mixtures formulations in the SDM2.0 2.
• Determine how to use Henry's versus Raoult's Law when assessing chemical mixtures using the SDM 3.
• Summarize how weathering can change the chemical composition of a mixture and related exposure.
• Demonstrate how to use the SDM 2.0 to calculate changes in chemical composition and exposure associated with weathering.
• Apply the SDM 2.0 to related real-world scenarios.
Content Level
Intermediate
Core Competencies
Exposure Assessment
Risk Assessment
Work Environments, Occupations, and Industrial Processes
Keywords
Exposure Assessment
Risk assessment and management
Ventilation
Session Availability
In-person
Targeted Audience
Professional
Transfer of Knowledge
Case Studies
Practical Application