Topic Outline
Hazard Ranking Strategies & Hierarchy of Controls
Environmental contaminants: properties of gases, vapors, aerosols and bio-agents
Hazard banding and ranking schemes; toxicity and engery scales
Exposure banding and ranking schemes
Examples
Regulatory Mandates & Requirements
US EPA and OSHA Acts; health & safety requirements, permitting and discharge
Hazcom and right to know
Blood borne pathogen regulations
Laboratory safety regulations
Chemical / Material Safety Management
Reading & interpreting MSDS
Chemical Hygiene Plan (CHP) requirements
Bio-safety control plans
Chemical, Radiological and Biological Agents
Unique properties of biological agents and radiological agents
Special handling requirements
Permitting and material management
Disposak and life cycle concerns
Hoods and LEV - Essential Pressure and Flow Relationships
Properties of air
Fluid mechanics - continutity
Enclosures, capture hoods, laboratory and biological hoods
Slot hoods and other hybrids
Dilution Ventilation - Theory, Applications to Confined Spaces
Derivation of general dilution equation
Steady-state conditions
Transient conditions: spills, purging, confined spaces
Building Ventilation Systems / Zone Isolation Strategies
HVAC & IAQ - building multi-zone and plenum systems
HVAC, Thermal Comfort, IAQ & Plenum Systems
Regulation of head load and occupant load
Recirculation and outdoor air requirements
Heating / cooling diagrams and apparatus
Multi-zone Modeling of Building Ventilation
Well mixed box model - mass balance model
Zone input and removal terms
Zone coupling and recirculation
Atmospheric Dispersion Processes
Dispersion due to atmospheric mixing
Boundary layer effects
Meteorology effects; stability and mixing
Airflow Measurements & Troubleshooting (Demo)
Pressure devices; gauges, manometers, micrometers
Pitot tube, hot wire, vane anemometer
Velocity profile in a duct
Taking a pitot traverse - circular & rectangular
Dispersion Modeling to Assess Community Impacts
Types of regulatory dispersion models
Dispersion model inputs
Types of source terms
Effect of input variability; sensitivity analysis
Example
Chemical Protective Clothing
Selection of appropriate gloves, boots, and other items
Permeation and breakthrough properties
Testing and evaluation of protective clothing
Respirator Selection and Uses
Equipment selection types of respirators and designated uses
Service life, decontamination and breakthrough
Respirator Program Evaluation and Fit Testing
Program implementation and requirements
Program evaluation and testing
Training and certification requirements
Protective Measures for Physical Hazards
Energy as applied to hazard control
Damping and dissipation of energy
Advanced Session Topics
Fluid Mechanics Power
Newtonian fluids, viscosity & Reynolds Number
Conservation of mass, conservation of energy
Pt2: Bernoulli Equation, formulation of loss terms
Fluid mechanics and pressure changes in serial flow
Local Exhaust System Design - Simple Single-Branch Systems
Parts of the system
Requirements for replacement air
Ventilation System Design
Design goals and assumptions
Duct selection and sizing
System design & layout
Pressure loss calculations
System problems
Local Exhaust System Design - Multiple-Branch Systems
Pressure changes across junctions of parallel flow
Balancing
System Design Problem - Group projects
Vent Design by Computer
Handout: Koshland and Yost article & spreadsheet template
"Use of a spreadsheet in the design of an industrial ventilation system"
Fan Selection, Fan Laws & Air Cleaners
Fan types, operating curves, fan "laws"
Other selection criteria, installation considerations
Air-Cleaners
Selection based on contaminant characteristics and permit discharge requirements
Particulate removal - physics and types of devices
Mist, gas and vapor removal - physics and devices
Selection considerations: particle size, temperature, corrosivity, flammability (etc)
Psychrometrics & Non-Standard Conditions
Density correction factor elevation and altitude
Density, moisture, temp, pressure and enthaply of air
Absolute and relative humidity, ideal saturation process
Mixtures and state changes