Visual Welding Inspection and EN/ISO 17637 Standards Quiz
20 Questions
6 Views

Visual Welding Inspection and EN/ISO 17637 Standards Quiz

Created by
@ThrillingRhodonite

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the minimum surface illumination required for visual testing of fusion welds?

  • 350 lux (correct)
  • 45W bulb emits ~450
  • 600 mm from weld surface
  • 500 lux

    • What percentage of weld discontinuities can be detected by an effectively applied program of visual welding inspection?

  • 80-90% (correct)
  • 10-20%
  • 50-60%
  • 30-40%

    • What angle should the eyes be from the normal (perpendicular) during direct inspection of weld surface?

  • 30°
  • 60° (correct)
  • 90°
  • 45°

    • What does EN/ISO 17637 specify?

    <p>Visual testing of fusion welds in metallic materials</p> Signup and view all the answers

    What does VWI stand for?

    <p>Visual Welding Inspection</p> Signup and view all the answers

    What is the recommended surface illumination for visual testing of fusion welds?

    <p>500 lux</p> Signup and view all the answers

    What is the distance at which the eyes should be from the weld surface during direct inspection?

    <p>600 mm</p> Signup and view all the answers

    What does NDE stand for in the context of welding inspection?

    <p>Non-destructive testing</p> Signup and view all the answers

    What is the recommended qualification for personnel performing indirect visual testing?

    <p>ISO 9712</p> Signup and view all the answers

    What is the maximum root opening for fillet welds when t = 8mm?

    <p>1.3 mm</p> Signup and view all the answers

    What should be done prior to deposition of subsequent passes during welding?

    <p>Clean each bead/layer</p> Signup and view all the answers

    What should be examined to determine if a finished weld meets application or product standards?

    <p>Weld profile and height of weld reinforcement</p> Signup and view all the answers

    When should final VT be performed?

    <p>After PWHT</p> Signup and view all the answers

    What should be done when defects are discovered in repaired welds?

    <p>They shall be removed and rewelded</p> Signup and view all the answers

    What is the maximum joint misalignment for butt [groove] welds when t = 20mm?

    <p>2.0 mm</p> Signup and view all the answers

    What should be used to remove all slag to ensure imperfections are not obscured?

    <p>Manual or mechanical means</p> Signup and view all the answers

    What is the qualification used by 3rd party labs to confirm personnel qualification?

    <p>ISO 9712</p> Signup and view all the answers

    What should be avoided when weld finishing is required?

    <p>Overheating, grinding marks, and uneven finish due to grinding</p> Signup and view all the answers

    What should be examined to assure complete defect removal in repaired welds?

    <p>Excavation</p> Signup and view all the answers

    What should be done if the gaps between the parts to be joined exceed the appropriate limit?

    <p>Compensated for by a corresponding increase in the throat thickness</p> Signup and view all the answers

    Study Notes

    Visual Testing of Fusion Welds

    • Minimum surface illumination required for visual testing of fusion welds: 500 lux
    • Effectively applied program of visual welding inspection can detect approximately 80-90% of weld discontinuities

    Direct Inspection of Weld Surface

    • Eyes should be at an angle of 30-40° from the normal (perpendicular) during direct inspection of weld surface
    • Recommended distance from eyes to weld surface during direct inspection: 400-600 mm

    Standards and Qualifications

    • EN/ISO 17637: specifies requirements for visual examination of welds
    • VWI: Visual Welding Inspection
    • NDE: Non-Destructive Examination in the context of welding inspection
    • Recommended qualification for personnel performing indirect visual testing: Level 2 or Level 3 VT certification

    Welding and Inspection

    • Recommended surface illumination for visual testing of fusion welds: 500 lux
    • Maximum root opening for fillet welds when t = 8mm: 2.5 mm
    • Prior to deposition of subsequent passes during welding, the surface should be cleaned and free of oil, grease, and moisture
    • Final VT should be performed after completion of all welding operations
    • When defects are discovered in repaired welds, they should be reworked to meet application or product standards

    Inspection and Repair

    • To assure complete defect removal in repaired welds, the weld surface should be examined
    • If the gaps between the parts to be joined exceed the appropriate limit, the parts should be re-machined or resized
    • A qualified weld inspector should be used to examine the finished weld to determine if it meets application or product standards
    • A wire brush or equivalent tool should be used to remove all slag to ensure imperfections are not obscured
    • The qualification used by 3rd party labs to confirm personnel qualification is the VT certification
    • When weld finishing is required, grinding or machining should be avoided to prevent hiding defects

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    231121_Eargle_ISO5817 VT-2 Training Material.pptx

    Description

    Test your knowledge of visual welding inspection fundamentals and EN/ISO 17637 standards with this informative quiz. Explore the key concepts and essential skills required for effective visual welding inspection in the fabrication process.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser