Weld & Weld Metal Defects Flashcards
(28 cards)
- The weld zone is
a. The part of the parent metal that’s melted into the weld metal
b. The area of the parent metal that has been affected by heat
c. The area containing the weld metal
d. The boundary between the fusion zone and the heat affected zone
C
- The weld face is
a. The surface of the weld
b. The edge where the parent metal has been prepared
c. The surface join where the parent metal meets the weld metal
d. The boundary between the fusion zone and the heat affected zone
A
- Into how groups are welding defects classified
a. 4
b. 5
c. 6
d. 7
C
- Imperfect shape is the classification given to
a. Lack of fusion
b. Lack of penetration
c. Porosity
d. Incompletely filled groove
D
- Which of the following are planar defects
a. Overlap
b. Lack of fusion
c. Solid inclusions
d. Porosity
B
- Which of the following is a volumetric defects
a. Laminations
b. Cracks
c. Worm holes
d. Lack of sidewall fusion
C
- Where are fatigue cracks most likely to appear
a. Welds - on the surface
b. Welds - internally
c. Parent metal
d. Heat affected zone
D
- When cleaning a weld for closed visual inspection what cleaning standards should be adopted
a. SA 3
b. SA 2.5
c. BS 5405
d. BS 5200
B
- When cleaning a weld for inspection what area should be included
a. The whole weld
b. 75mm side and the weld itself
c. 15cm side and the weld itself
d. 20cm side and the weld itself
B
- When reporting a defect during a weld inspection accurate measurement is in
a. O’clock positions
b. Centimetres
c. Mm from datum
d. Mm from the nearest know feature
C
- Oxide in welds can cause discontinuities which are similar to non-metallic inclusions but these oxide related discontinuities are called
a. Crater cracks
b. Seams
c. Slag inclusions
d. TiG inclusions
C
- A Groove In the toe of the weld caused by excessive arc when welding is termed
a. Underlap
b. Incompletely filled groove
c. Undercut
d. Insufficient reinforcement
C
- An excess of weld metal at the face of a butt weld should be termed
a. Overlapping
b. Excessive convexity
c. Excessive reinforcement
d. Overlay
C
- An excessive of weld metal at the face of fillet weld should be termed
a. Overcapping
b. Excessive convexity
c. Excessive reinforcement
d. Overlay
B
- A reduction of thickness of a metal caused by excessive grinder is
a. Underflushing
b. Over flushing
c. Under dressing
d. Grinding mark
A
- A crack running straight along the center of the weld would be called
a. Transverse
b. Longitudinal
c. Compressional
d. Branching
B
- Which of the following may normally be identified by closed visual inspection of a weld from the reinforcement side
a. Lack of fusion
b. Lack of penetration
c. Undercut
d. Excessive penetration
C
- What causes slag to form on the weld run
a. Oxides produced at the surface
b. Impurities I the electrode
c. Melting of the flux coating
d. Incompletely fused metal
C
- When measuring a defect form the HAZ such as spatter what information would you give
a. Distance from datum
b. Diameter and depth
c. Distance from adjacent toe
d. All of the above
D
- Arc strikes are
a. Reported but not significant
b. Not acceptable by many fabrication codes
c. Not detectable on visual inspection
d. Never occurs offshore
B
- In which of the following would you expect to find lamellar tearing
a. Un welded steel plates
b. Large aluminium casting
c. Centre of butt welds
d. None of the above
C
- One method of reducing the possibility of fatigue failure in a welded joint is
a. Use backing strips
b. Flexible coating
c. Weld toe profile
d. Concrete coating
C
- Laminations and solid inclusions
a. Are found on steel plates
b. Are found on steel pipes
c. Can be found with ultrasonic inspections
d. All of the above
D
- If both sides are accessible, which of the following can be detected by visual inspection
a. Excessive penetration
b. Worm holes
c. Cold lap and overlap
d. Laminations
D
