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What is the definition of a 'double repair' in welding?

  • A repair made at the back side of a groove weld
  • A repair weld originating from the weld face that penetrates completely through the weld thickness
  • A repair to the weld face located within the external reinforcement
  • A second repair in a previously repaired area of a completed weld (correct)

    • What is the definition of a 'defect' in welding?

  • Evidence obtained by nondestructive testing
  • Imperfection of sufficient magnitude to warrant rejection based on the acceptance criteria (correct)
  • Discontinuity or irregularity that is detectable by nondestructive testing
  • Completed groove and/or fillet weld joining a set-on or set-in branch pipe or fitting

    • What is the role of a 'contractor' in welding?

  • Repair weld made at the back side of a groove weld
  • Owner company or the engineering agency in charge of construction
  • Includes the primary contractor and any subcontractors engaged in work covered by the standard (correct)
  • Mechanical means to remove weld metal using abrasive methods

    • What is the definition of an 'imperfection' in welding?

    <p>Discontinuity or irregularity that is detectable by methods outlined in the standard</p> Signup and view all the answers

    What does the Welding Procedure Specification (WPS) cover?

    <p>Details for welding of specific pipe and fittings</p> Signup and view all the answers

    Who adopts and approves the Welding Procedure Specification (WPS)?

    <p>The chief engineer</p> Signup and view all the answers

    What details are included in the Coupon Test Report?

    <p>Welder details, welding time, temperature, weather conditions, voltage, amperage, and more</p> Signup and view all the answers

    What results are included in the Coupon Test Report?

    <p>Results of tensile strength tests and remarks</p> Signup and view all the answers

    What details are provided in the section for remarks on tensile strength tests in the test report?

    <p>Original specimen dimensions, area, maximum load, tensile strength, and fracture location</p> Signup and view all the answers

    What context is the Welding Procedure Specification (WPS) and the Coupon Test Report related to?

    <p>The welding of pipelines and related facilities</p> Signup and view all the answers

    What should the specification include regarding joint design?

    <p>Sketches showing the angle of bevel, size of the root face, and the root opening</p> Signup and view all the answers

    What should be designated in the specification regarding electrical characteristics?

    <p>Current and polarity</p> Signup and view all the answers

    What should the specification indicate about the flame characteristics?

    <p>Whether the flame is neutral, carburizing, or oxidizing</p> Signup and view all the answers

    What should the specification designate regarding position for welding?

    <p>Roll or position welding</p> Signup and view all the answers

    What should be designated in the specification regarding the direction of welding?

    <p>Whether the welding is to be performed in an uphill or downhill direction</p> Signup and view all the answers

    What should the specification include about the lineup clamp?

    <p>Whether the lineup clamp is to be internal or external, or if no clamp is required</p> Signup and view all the answers

    What should the specification designate regarding the time between passes?

    <p>The maximum time between the completion of the root bead and the start of the second bead</p> Signup and view all the answers

    What should the specification include about the materials to which the procedure applies?

    <p>Identification of the materials</p> Signup and view all the answers

    What should the specification identify regarding diameters and wall thicknesses?

    <p>The ranges of specified outside diameters and specified wall thicknesses over which the procedure is applicable</p> Signup and view all the answers

    What should be shown regarding the filler metal, flux, and number of beads?

    <p>The sizes and classification number of the filler metal and flux and the minimum number and sequence of beads</p> Signup and view all the answers

    What should be shown regarding the shape and size of fillet welds?

    <p>The specification should show the shape and size of fillet welds</p> Signup and view all the answers

    What should be designated in the specification regarding the type and removal of lineup clamp?

    <p>Whether the lineup clamp is to be internal or external or if no clamp is required</p> Signup and view all the answers

    What does API Standard 1104 specify?

    <p>Equipment requirements for welding</p> Signup and view all the answers

    To which welding components does API Standard 1104 apply?

    <p>Pipe and piping components conforming to material and product specifications</p> Signup and view all the answers

    What must filler metals and fluxes used in welding conform to?

    <p>Specific AWS specifications</p> Signup and view all the answers

    How should filler metals and fluxes be handled to avoid damage?

    <p>Stored and handled to avoid damage</p> Signup and view all the answers

    What does the standard emphasize about the types of shielding gases used for welding?

    <p>Importance of purity and dryness</p> Signup and view all the answers

    How should shielding gases be stored?

    <p>In their original containers and away from extremes of temperature</p> Signup and view all the answers

    What types of welding procedures does the standard specify the qualification process for?

    <p>Manual, semi-automatic, mechanized, and automatic welding</p> Signup and view all the answers

    When must a detailed welding procedure specification be established and qualified?

    <p>Before production welding is started</p> Signup and view all the answers

    How long must the details of each qualified welding procedure be maintained?

    <p>As long as the procedure is in use</p> Signup and view all the answers

    What information must the welding procedure specification include?

    <p>Information about the specific process or method of application used</p> Signup and view all the answers

    What does the standard emphasize about adhering to the welding procedure specifications?

    <p>Importance of adherence, except where a change is specifically authorized</p> Signup and view all the answers

    What does the standard provide in terms of recording welding procedure details?

    <p>A sample form to record details, with the option to add other details</p> Signup and view all the answers

    What is a qualified welding procedure specification?

    <p>A detailed method for producing sound welds</p> Signup and view all the answers

    What is the definition of internal concavity (IC)?

    <p>A concave bead fused to the pipe wall with its center below the inside surface</p> Signup and view all the answers

    What does a radiographer do?

    <p>Performs radiographic operations</p> Signup and view all the answers

    What is roll welding?

    <p>Welding while rotating the pipe or assembly</p> Signup and view all the answers

    What is the definition of rework in welding?

    <p>Grinding or welding on a completed weld to correct defects rejected by testing</p> Signup and view all the answers

    What does a qualified welder demonstrate?

    <p>Ability to produce welds meeting specific requirements</p> Signup and view all the answers

    What is a repair procedure in welding?

    <p>A detailed method for producing sound repairs</p> Signup and view all the answers

    What is the definition of position welding?

    <p>Welding in which the pipe or assembly is not rotating during the weld deposition</p> Signup and view all the answers

    What does multiple repairs refer to in welding?

    <p>More than one individual repair location in a completed weld</p> Signup and view all the answers

    What is a partial thickness repair in welding?

    <p>A repair that extends into the weld but does not completely penetrate through its thickness</p> Signup and view all the answers

    What is mechanized welding?

    <p>A process with controlled parameters and torch guidance</p> Signup and view all the answers

    What is a repair in welding?

    <p>Any grinding or welding on a completed weld to correct defects rejected by testing</p> Signup and view all the answers

    Study Notes

    API Standard 1104: Welding of Pipelines and Related Facilities

    • The standard specifies the equipment requirements for welding, including gas and arc welding, to ensure acceptable welds, continuity of operation, and safety of personnel
    • It applies to the welding of pipe and piping components that conform to material and product specifications from various organizations such as API, ASME International, ASTM International, MSS, and ANSI
    • All filler metals and fluxes used in welding must conform to specific AWS specifications, and their welding procedure specifications must be qualified
    • Filler metals and fluxes should be stored and handled to avoid damage, and damaged or deteriorated ones should not be used
    • The standard outlines the types of shielding gases that can be used for welding and emphasizes the importance of their purity and dryness for the welding process
    • Shielding gases must be stored in their original containers and away from extremes of temperature, and those of questionable purity or in damaged containers should not be used
    • The standard specifies the qualification process for welding procedures using manual welding, semi-automatic welding with filler metal additions, mechanized welding with filler metal additions, and automatic welding without filler metal additions
    • A detailed welding procedure specification must be established and qualified before production welding is started to demonstrate suitable mechanical properties and soundness of the welds
    • The details of each qualified procedure must be recorded and maintained as long as the procedure is in use
    • The welding procedure specification must include information about the specific process or method of application used
    • The standard emphasizes the importance of adhering to the welding procedure specifications, except where a change is specifically authorized by the company
    • The standard provides a sample form to record the details of each qualified procedure, but it does not exclude adding other details

    Welding of Pipelines and Related Facilities - Key Terminology

    • Internal concavity (IC) is a concave bead fused to the pipe wall, with its center below the inside surface.
    • Mechanized welding is a process with controlled parameters and torch guidance, which may be manually varied.
    • Multiple repairs refer to more than one individual repair location in a completed weld.
    • A partial thickness repair extends into the weld but does not completely penetrate through its thickness.
    • Position welding is welding in which the pipe or assembly is not rotating during the weld deposition.
    • A qualified welder has demonstrated the ability to produce welds meeting specific requirements.
    • A qualified welding procedure specification is a tested and proven detailed method for producing sound welds.
    • A radiographer is a person who performs radiographic operations.
    • A repair is any grinding or welding on a completed weld to correct defects rejected by testing.
    • A repair procedure is a tested and proven detailed method for producing sound repairs.
    • Rework is the removal of imperfections prior to visual or nondestructive testing of a completed weld.
    • Roll welding involves rotating the pipe or assembly while depositing the weld metal.

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    Related Documents

    Welding of Pipelines and Related Facilities PDF

    Description

    Test your knowledge of API Standard 1104 with this quiz on welding of pipelines and related facilities. Explore equipment requirements, welding procedures, and terminology related to the welding process. Ideal for welding professionals and those seeking to deepen their understanding of welding standards and terminology.

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