Maricopa Community Colleges  ABC272   19972-20046 
Official Course Description: MCCCD Approval: 10/22/96
ABC272 19972-20046 L+L 2 Credit(s) 4 Period(s)
Fume and Exhaust System Design
Industrial ventilation and the control of fumes and particulates in industrial operations. Safety and health standards. Material specifications and hands-on duct fabrication. Prerequisites: (Indentured status with Associated Builders and Contractors, Inc. and ABC208) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABC272   19972-20046 Fume and Exhaust System Design
1. Interpret safety and health standards as described in specific manuals. (I)
2. Identify the steps required for calculating standard tolerance levels of toxic and hazardous substances. (II)
3. Interpret codes and specifications pertaining to specific fume or exhaust systems. (III)
4. Describe the procedures necessary to design hoods for ventilation systems. (IV)
5. Describe the procedures necessary to design exhaust systems (V)
6. Locate the charts and tables necessary for the design of system hoods and exhaust sections. (VI)
7. Describe necessary considerations for the design of spray booths and facilities for welding, cutting and brazing. (VII, VIII)
8. List principle types of dust collection equipment and materials for fabrication of specific duct systems. (IX, X)
9. Layout and fabricate a hood or a section of exhaust ductrun or a complete taper duct system. (XI)
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MCCCD Official Course Outline:
 
ABC272   19972-20046 Fume and Exhaust System Design
    I. Safety and Health - Codes and Standards
        A. American National Standards Institute (ANSI)
        B. National Fire Protection Association (NFPA)
        C. American Conference of Governmental Industrial Hygienists (ACGIH)
        D. Occupational Safety and Health Administration (OSHA)
        E. Other
      II. Tolerance Levels - Calculation Steps
          A. Threshold limit values (TLV)
          B. Exposurte limits
            1. Ceiling value (C)
            2. Time weighted average (TWA)
        III. Codes and Specifications - Fumes and Exhaust Systems
            A. OSHA
            B. ACGIH
          IV. Ventilation Hoods
              A. Types
                1. Enclosing hood
                2. Canopy hood
                3. Lateral hood
              B. Design process
              C. Specifications
            V. Exhaust Systems
                A. Employee exposure
                B. Control techniques
                C. Exposure control
              VI. Charts and Tables
                  A. Hazard potential
                  B. Gasd, vapor, mist evolution
                  C. Velocity tables
                VII. Paint Spray Booths
                    A. Spray finishing operation factors
                    B. Dilution air formula
                  VIII. Welding, Cutting and Brazing
                      A. Ventilation standards (OSHA)
                      B. ACGIH
                    IX. Dust Collection Equipment
                        A. Collection of airborne contaminants
                        B. Types
                          1. Electrostatic precipitators
                          2. Fabric collectors
                          3. Wet collectors
                          4. Dry centrifugal collectors
                      X. Materials
                          A. High-pressure duct systems
                          B. Types
                            1. Round
                            2. Flat oval
                            3. Rectangular
                          C. Material standards
                            1. Class I
                            2. Class II
                            3. Class III
                        XI. Layout and Fabrication
                            A. Tools and materials
                            B. Procedure
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