Maricopa Community Colleges  ABA174   19972-20002 
Official Course Description:   MCCCD Approval:  10/22/96  
ABA174      19972-20002 LEC 1 Credit(s) 1 Period(s)
Installing and Sizing Gas Systems
Materials and specific parts for natural and LPG gas piping systems. Testing, purging and the installation of appliances. Reading and interpreting blueprints and drawings for gas systems. Sizing natural gas piping and venting requirements for natural gas piping systems. Prerequisites: (Indentured status with the Arizona Builders Alliance and ABA172) or permission of the apprenticeship coordinator.
 
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MCCCD Official Course Competencies:
 
ABA174   19972-20002 Installing and Sizing Gas Systems
1. List and define trade terms associated with the installation of natural and liquefied petroleum gas (LPG) gas piping systems. (I)
2. Describe specific types of materials and parts used in natural gas piping. (II)
3. Explain testing, purging and appliance installation procedures for natural gas systems. (III)
4. Describe specific types of materials and parts used in liquefied petroleum gas piping systems. (IV)
5. Read and interpret plumbing drawings and/or blueprints of natural gas and liquefied petroleum gas (LPG) piping systems. (V)
6. Explain testing and purging procedures for liquefied petroleum gas (LPG)piping systems. (VI)
7. Describe the sizing of standard, medium and high pressure natural gas piping. (VII)
8. Describe specific venting requirements for natural gas piping systems. (VIII)
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MCCCD Official Course Outline:
 
ABA174   19972-20002 Installing and Sizing Gas Systems
    I. Trade Terms
        A. Meters
          1. Tin-case
          2. Aluminum-case
        B. Curb box
        C. Pipe
          1. Black iron
          2. Galvanized
          3. Copper
          4. Polyethylene (PE)
        D. Manometer
        E. Meters
        F. Purge
        G. Regulator
        H. 45 degree ells
        I. Drips
        J. Valves
        K. Suppressers
        L. BTU/hour
        M. Combustion air
        N. Infiltration
        O. Input rating
        P. Venting
      II. Natural Gas Piping
          A. Materials
            1. Steel pipe
            2. Copper pipe
            3. Polyethylene plastic pipe
          B. Parts
            1. Meters
            2. Valves
            3. Regulators
            4. Unions
            5. Anodes
            6. Pipe protective coatings
        III. Testing, Purging and Appliance Installation
            A. Testing
              1. Connections
              2. Manometer
            B. Purging
              1. Lines
              2. Appliances
              3. Safety precautions
            C. Appliance installation
              1. Manufacturer's specifications
              2. Venting
              3. Accessibility
          IV. Liquefied Petroleum Gas (LPG) Piping
              A. Materials
                1. Steel pipe
                2. Seamless copper pipe
                3. Annealed flexible copper pipe
                4. Brass tubing
              B. Parts
                1. Storage containers
                2. Valves
                3. Regulators
                4. Vents
                5. Suppressers
                6. Gauges
                7. Unions
                8. Drips
            V. Blueprints and Drawings
                A. Natural gas
                  1. Location of meter
                  2. Type and location of regulator
                  3. Location of curb valve
                  4. Service line requirements
                  5. Inspection and test requirements
                  6. Appliance location
                  7. Type of venting system
                  8. Layout of piping system
                B. Liquefied petroleum gas (LPG)
                  1. System size
                  2. Type and location of storage container
                  3. Type and location of regulator
                  4. Service line requirements
                  5. Inspection and test requirements
                  6. Appliance location
                  7. Type of venting system
                  8. Layout of piping system
              VI. Testing and Purging Liquefied Petroleum Gas(LPG) Systems
                  A. Testing
                    1. Line plugging
                    2. Connections
                    3. Manometer
                  B. Purging
                    1. Lines
                    2. Appliances
                    3. Storage tank
                    4. Safety precautions
                VII. Sizing
                    A. Standard pressure systems
                      1. BTU/hour appliance ratings
                      2. Cubic feet/hour
                      3. Altitude compensation
                      4. Distance factor
                      5. Total demand
                    B. Medium and high pressure systems
                      1. Pressure regulators
                      2. Shut-off valves
                      3. Pipe marking
                  VIII. Venting
                      A. Input rating - 30 Btu/hour per cu/ft
                      B. Vents/chimneys
                        1. Type B
                        2. Type BW
                        3. Type L
                        4. Minimum clearances
                        5. Vent connectors
                        6. Chimney heights
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