1. When making repairs to stainless-steel overlay on carbon steel base material, the repair shall be inspected by ?
A. Radiographic testing
B. Penetrant testing
C. Ultrasonic examination
D. Penetrant and ultrasonic testing
2. Temper embrittlement is a metallurgical change that is ?
A. Not readily apparent but can be confirmed through tension testing
B. Readily apparent and can be confirmed through impact testing
C. Readily apparent and can be confirmed through metallography
D. Not readily apparent but can be confirmed through impact testing
3. Non – normalized SA 516 Gr 60 material is used for fabricating a pressure vessel that has a nominal wall thickness of 1.125 inches (28.6mm). What is the minimum design metal temperature for the vessel that does not require impact testing ?
A. - 26˚F (-32˚C)
B. 2˚F (-17˚C)
C. 37˚F (3˚C)
D. 75˚F (24˚C)
4. When reviewing a group of radiographs, all following information must be documented except ?
A. Source to object distance
B. Geometric un sharpness
C. Material type
D. Single or double wall exposure
5. If a repair is made on a pressure vessel using a filler metal with lower specified minimum tensile strength than base metal, all of the following requirement apply except ?
A. The repair shall be made with minimum of two passes
B. The increased thickness of the repair shall have rounded corners and blend into the base metal using a 3 : 1 taper
C. A minimum preheat of 175 Deg F (79.4 Deg C) and an inter pass temperature of 450 Deg F (232Deg C)must be maintained
D. The repair thickness shall not more than 50 % of the required base metal thickness excluding corrosion allowance
