Maricopa Community Colleges  HFA215   20014-20035 
Official Course Description: MCCCD Approval: 03/27/01
HFA215 20014-20035 LEC 5 Credit(s) 5 Period(s)
Fundamental Insulation Skills: Piping II
Insulation for piping for cryogenic service. Insulation materials, coverings, finishes, and sealants for underground piping. Measure and cut rigid insulation using hand and table saws. Score block and board. Insulation of vertical and horizontal cylinders, finished heads and finished bodies using wired, bands, pins, stick clips, and washers. Insulate duct work in an air-handling system using fibrous board, duct wrap and flexible sheet. Prerequisites: HFA115 and Indentured status with the Heat, Frost, and Asbestos Workers Joint Apprenticeship Training Committee (JATC) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
HFA215   20014-20035 Fundamental Insulation Skills: Piping II
1. Demonstrate safe and proper insulation techniques for pipes and equipment for cryogenic service using cellular glass, polyurethane and mineral wool. (I)
2. Demonstrate safe and proper techniques to insulate, seal, and finish underground piping using pipe covering and loose fill. (II)
3. Measure and cut lags from block and board for use as rigid insulation using table and hand saws. (III)
4. Score the block and board including: determining depth, closeness, spacing and fit for use as rigid insulation. (IV)
5. Demonstrate rigid insulation techniques for specific areas and surfaces of vertical cylinders using specific materials including wires, bands, pins, stick clips, washers and disks. (V)
6. Demonstrate insulate techniques for body, heads and large diameter vertical cylinders using flexible fibrous and flexible sheet insulation. (VI)
7. Demonstrate insulation techniques for horizontal cylinders using rigid and flexible insulation. (VII)
8. Demonstrate insulation techniques for finished heads using mastic, canvas and metal gores. (VIII)
9. Demonstrate insulation techniques for finished bodies using canvas, metal and plastic jacketing. (IX)
10. Demonstrate insulation techniques for specific ductwork in air-handling systems using fibrous board, duct wrap and flexible sheet. (X)
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MCCCD Official Course Outline:
 
HFA215   20014-20035 Fundamental Insulation Skills: Piping II
    I. Cryogenic Service
        A. Cellular glass
        B. Polyurethane
        C. Mineral wool
        D. Sprayed foam
      II. Underground Piping
          A. Insulate sections
          B. Seal and finish
            1. spiral wrapped tape
            2. asphalt-base jacket
            3. primer and membrane
            4. polyethylene film
          C. Loose fill
        III. Table and Hand Saws
            A. Lags from block
              1. measure
              2. cut
            B. Labs from board
              1. measure
              2. cut
          IV. Score Block and Board
              A. Depth and closeness
              B. Spacing
              C. Fit
            V. Rigid Insulation
                A. Body
                  1. wires
                  2. bands
                  3. pins
                  4. stick clips
                  5. washers
                B. Substrate surface
                  1. pins
                  2. stick clips
                C. Top heads on hot work
                  1. wires
                  2. bands
                D. Top Heads on Cold Work
                  1. disks
                  2. loose fill
                E. Bottom heads using pigtail wires
                  1. welded pins
                  2. calcium silicate
                F. Cones
                  1. cellular glass
                  2. foamed plastic
                G. Cylinder legs
                  1. wire
                  2. fiberglass
              VI. Flexible Insulation
                  A. Fibrous
                    1. body and heads on hot work
                    2. body and heads on cold work
                    3. large-diameter using support bars
                  B. Sheet
                    1. body using contact adhesive
                    2. heads using Contact adhesive
                VII. Horizontal Cylinders
                    A. Rigid insulation
                      1. measure and cut lags
                      2. calcium silicate
                      3. bands
                    B. Flexible insulation
                      1. measure circumference
                      2. cut to circumference
                      3. fiberglass wrap
                      3. staples, pins, bands
                  VIII. Finished Heads
                      A. Reinforced mastic
                        1. glass fabric
                        2. cement
                      B. Canvas
                        1. dry pasting
                        2. finishing cement
                        3. lagging adhesive
                      C. Metal Gores
                        1. cement
                        2. screws or rivets
                    IX. Finished Bodies
                        A. Canvas
                          1. insulating cement
                          2. finishing cement
                          3. dry pasting
                        B. Metal jacketing
                          1. holding device
                          2. sheets and overlapping
                          3. secure
                        C. Plastic jacketing
                          1. holding device
                          2. sheets and overlapping
                          3. secure
                          4. seal
                      X. Air-Handling Systems
                          A. Rectangular duct with fibrous board
                            1. pins
                            2. specially cut pieces
                          B. Duct fittings with fibrous board
                            1. rounded Turn
                            2. rectangular-to-rectangular reducer
                            3. rectangular to round reducer
                            4. round-to-round reducer
                          C. Straight duct with duct wrap
                            1. staple stitching
                            2. butt Joint method
                            3. rectangular duct
                            4. round duct
                          D. Duct fittings with duct wrap
                            1. box Bend
                            2. duct Tee
                            3. rectangular-to-rectangular reducer
                            4. round duct elbow
                            5. round-to-round reducer
                          E. Duct using flexible sheet
                            1. foamed plastic sheets
                            2. foamed plastic tubes
                          F. Interior surfaces of plenums or large ducts
                            1. coated duct liner
                            2. mastic and glass, canvas, lagging adhesive
                          G. Breechings, flues and precipitators
                            1. air space on rectangular surface
                            2. air space on cylindrical surface
                            3. round and rectangular breeching
                          H. Seal and finish
                            1. canvas to rectangular duct
                            2. pvc or metal jackets to rectangular duct
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