Maricopa Community Colleges  ABC258   20032-20086 
Official Course Description: MCCCD Approval: 07/22/08
ABC258 20032-20086 LEC 1 Credit(s) 1 Period(s)
Work Planning and NDE Testing
Procedures for planning daily work activities for pipefitters. Includes: coordinating with other crafts, establishing safe working conditions and field checking. Non-destructive (NDE) examination of materials including: visual inspections, prefit inspections, and inspecting root passes. Inspecting completed welds using: borescopes, flexible fiberscopes and video scopes. NDE weld tests including: dye penetrant test, magnetic particle test, ultrasonic test, radiography and conductivity tests.
Prerequisites: Registered Apprentice status or permission of the apprenticeship coordinator.
Cross-References: MEC258
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MCCCD Official Course Competencies:
 
ABC258   20032-20086 Work Planning and NDE Testing
1. Describe procedures for work planning and coordination with multiple crafts to insure a safe, efficient and effective work site. (I)
2. Describe how to determine material needs and procedures for securing equipment and materials. (II)
3. List procedures for performing a specific task, sequencing the operations for the task and field checking an installation. (II, III)
4. Describe specific types of non-destructive examination (NDE) testing, the tools and equipment used for testing and the potential hazards involved in such testing. (IV, V)
5. Perform visual inspections of welds. (VI, VII)
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MCCCD Official Course Outline:
 
ABC258   20032-20086 Work Planning and NDE Testing
    I. Work Planning Activities
        A. Terms and definitions
          1. Area entry permit
          2. Hold point
          3. Hot work permit
          4. Nitrogen blanket
          5. Pressure vessel
          6. Welding shield
          7. Other
        B. Planning daily work activities
          1. Supervisor/field engineer
          2. Iso's/orthographic drawings
          3. Hold points
          4. Permits
          5. Work site examination
          6. Safety hazards
        C. Coordinating work activities with other crafts
          1. Other crafts working in the area
          2. Lockout/tagout procedures
          3. Check permits
        D. Ensuring safe working conditions
          1. Permits
          2. Fire watch
          3. Worksite
          4. Check equipment
      II. Determining Material Needs
          A. Take-offs
            1. Shop fabricated work
            2. Field erecting shop-fabricated components
            3. Field erecting field-routed components
          B. Securing equipment and materials
            1. Site preparation
            2. Requisition materials
            3. Material storage
            4. Materials inspection
          C. Pipefitting task preparation
            1. Drawings
            2. Physical locations
            3. Tool requirements
            4. Coordinate with engineer for isolation of system
            5. Communicate with other crafts
          D. Sequencing operations specific to task
        III. Field Checking the Installation
            A. Drawings
            B. Dimensions
            C. Equipment connections
            D. Hangers and supports
            E. Flow directions
            F. Valves
            G. Welds
            H. Documentation
          IV. Non-Destructive Examination (NDE) of Materials
              A. Terms and definitions
                1. Acceptable weld
                2. Complete joint penetration
                3. Concavity
                4. Crater
                5. Discontinuity
                6. Porosity
                7. Root opening
                8. Shrinkage void
                9. Toe of the weld
                10. Undercut
                11. Underfill
                12. Weld root
                13. Other
              B. Performing visual inspections
              C. Performing prefit-up inspections or hold points
              D. Performing visual inspections of fit-ups
                1. Hi-lo gauge
                2. Taper gauge
                3. Weld defects
              E. Inspecting root passes
              F. Inspecting completed welds
            V. Scopes for Inspecting Welds
                A. Borescopes
                B. Flexible fiberscopes
                C. Video scopes with CCD probes
              VI. Non-Destructive Examination and Evaluation
                  A. Liquid penetrant
                  B. Magnetic particles
                  C. Ultrasonics
                  D. Radiography
                  E. Visual optical
                  F. Eddy currents
                  G. Conductivity tests
                  H. Hazards
                VII. Reading Test Results
                    A. Reading surface discontinuities
                      1. External undercut
                      2. Internal undercut
                      3. Insufficient fill
                      4. Concavity
                      5. Burn-through
                    B. Reading sub-surface discontinuities
                      1. Root pass with aligned porosity
                      2. Cluster porosity
                      3. Interpass slag inclusions
                      4. Longitudinal root cracks
                      5. Interpass overlap
                    C. Conductivity tests
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