Copyright Goodheart-Willcox Co., Inc. 265 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 finding 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 test corrosion test cross section test defect destructive test discontinuity dye penetrant test ferrite test flaw fluorescent penetrant test gamma rays hardness test hydrostatic test image quality indicator (IQI) macrotest magnetic particle test (MT) microhardness test microtest nick-break test nondestructive examination (NDE) notch-toughness test penetrameter penetrant test (PT) pressure test quality control radiographic test (RT) temper bead tensile test 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 Chapter 18 Weld Inspection and Repair