Objectives
After completing this chapter, you will be able to:
❒ Identify areas that should be inspected by a
GTAW welder.
❒ Recall the various types of nondestructive tests
and their advantages and disadvantages.
❒ Recall the various types of destructive tests.
❒ Recall the tests used in weld integrity inspections.
❒ Identify the conditions that require dimensional repairs
and the techniques used to make these repairs.
❒ Identify various types of surface defects and
explain corrective actions for each type.
❒ Recall procedures for fi nding and repairing internal
defects.
❒ Recall the preparation needed prior to making repairs.
❒ Summarize proper welding practices for repairs.
❒ Explain the need for postweld inspection and
repair review.
Key Terms
bend tests
corrosion tests
cross section tests
defect
destructive tests
discontinuity
dye penetrant test
ferrite test
fl aw
fl uorescent penetrant test
gamma rays
hardness tests
hydrostatic test
image quality indicator (IQI)
macrotest
magnetic particle test (MT)
microhardness test
microtest
nick-break tests
nondestructive examination (NDE)
notch-toughness tests
penetrameters
penetrant test (PT)
pressure tests
quality control
radiographic test (RT)
temper beads
tensile tests
ultrasonic testing (UT)
visual test (VT)
X-rays
Introduction
Quality control is used throughout the welding
industry to monitor the quality of the items produced.
All manufactured items are made to specifi cations.
Inspections must be made during and after the manufac-
turing cycle to ensure that parts meet the requirements
of the specifi cations. The American Welding Society has
increased the requirements for a CWI (certifi ed welding
inspector) certifi cate to ensure that certifi cate recipients
are capable of performing quality control. Quality control
is not only important to ensure quality parts but also
to ensure that the correct procedures are performed as
effi ciently as possible. The use of proper quality control
measures help make a company as strong as possible in
an increasingly competitive industry.
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Chapter Chapter
Weld Inspection
and Repair