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ENVH 557

Topics and Readings

Date: Lecture Topic: Readings:
  SC: Source Control; PC: Pathway Control; RC: Receptor Control *Indicates Split Session  
1/4 SC: Hazard Ranking & Hierarchy of Controls (audio) Woodside Ch 3
1/9 SC: Regulatory Mandates & Requirements (audio) Woodside Ch 1,2; McD Ch 3,4
1/11

SC: Chemical / Material Safety Management (audio)

Supplement Websites:
Pesticide Volatilization
Regulations.gov - Docket Folder Summary
Regulations.gov - Document Details
What's on My Food

Woodside Ch 7
J. Farm Article
1/16 Holiday  
1/18 Snow day  
1/23

SC: Chemical and Biological Agents (audio)

Woodside Ch 5

1/25

Case Study (1): Times Beach MO; Spray buffers in CA

RC: Dispersion Modeling to Assess Community Impacts (audio)

-Woodside Ch 4

 

1/30 PC: Dilution Ventilation - Theory, Applications to Confined Spaces (audio)
McDermott Ch 2,5,6; IV Ch 1
2/1
Case Study (2): Confined spaces (audio) Case Study 2 Article
2/6 PC: HVAC, thermal comfort, IAQ & plenum systems (audio)

McDermott Ch 12
Welch Article

2/8* SC: Hoods and LEV - essential pressure and flow relationships (audio) Woodside Ch 17
2/13

-SC: Hood design and entry effects (audio)
-Problem Set 1
-Vent Lab Problem Set

Woodside Ch 17
2/15*

PC: Airflow Measurements & Troubleshooting (ROOSEVELT)

Woodside Ch 12,13, IV 5.13

2/20 Holiday  
2/22* -RC: Chemical Protective Clothing Selection
(audio)
-Take-home Midterm
Woodside Ch 16
2/27

-RC: Respirator Selection and Uses (audio)

PPE/RP Guide
2/29*

RC: Cast study (3): Respirator Fit Testing (Students) (audio)
-Problem Set 2
-Take-home Midterm DUE

PPE/RP Guide
3/5 RC: Protective Measures for Physical Hazards
(audio)

Woodside Ch 18,19,20

3/7*

Case study (4): Controls in health care/Biotech
Case study (5): Erecycling - hazardous waste controls
Case study (6): Anthrax Protection

Woodside Ch 9,10,11
     
     
     
3/12* Monday, March 12, 2:30-4:20
Take-home final DUE
  Special Ventilation Controls Section Topics  
1/4 Fluid Mechanics Primer: Density, Viscosity (audio) IV Ch 7
1/11 Fluid Mechanics Primer McDermott Ch 8; IV Ch 5
1/18 Snow day  
1/25 Dilution Models - Non Steady-State Calculations  
2/1 Fluid Mechanics Applications McDermott Ch 7, 9, 13
2/8 HVAC Systems IV Ch. 4,6
2/15 Airflow Measurements & Troubleshooting (ROOSEVELT) *IV Sec. 5.13
2/22 Local Exhaust Design: Single Branch Systems

 

2/29 Local Exhaust: Multi Branch Systems
3/7 Fan Selection - Fan Laws, Air Cleaner Selection  

Topic Outline

Lecture Topics
Hazard Ranking & 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 and Biological Agents
Unique properties of biological agents and radiological agents
Special handling requirements
Permitting and material management
Disposak and life cycle concerns

Atmospheric Dispersion Processes
Dispersion due to atmospheric mixing
Boundary layer effects
Meteorology effects; stability and mixing

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

Hood Design & Entry Effects

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

Special Ventilation Controls Topics
Fluid Mechanics Primer

The Bernoulli Equation

Dilution Models

Local Exhaust System Design - Simple Single-Branch Systems
Parts of the system
Requirements for replacement air

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

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

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