Welding Inspection & Testing Flashcards
7 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Welding Inspection & Testing flashcards as text
During a magnetic particle inspection (MPI) of a fillet weld, indications appear only when the magnetic field is perpendicular to a discontinuity. What is the recommended practice to ensure complete coverage?
Answer: Magnetize in two directions at least 45° apart
Magnetizing in two directions at least 45° apart (typically 90°) ensures that discontinuities oriented in any direction will be detected.
A radiographic image shows a dark, elongated linear indication with fuzzy edges inside the weld. This is most likely indicative of:
Answer: Slag inclusion
Slag inclusions appear as dark, elongated linear indications with irregular or fuzzy edges in radiographic images.
When performing a guided bend test, the coupon cracks at the weld toe on the tension side. This result indicates:
Answer: Lack of fusion at the weld toe
Cracking at the weld toe during a guided bend test indicates lack of fusion between the weld metal and base metal at that location.
AWS D1.1 requires that the inspector verify the preheat temperature at what minimum distance from the joint edge before welding begins?
Answer: 3 inches (75 mm)
AWS D1.1 requires preheat to be verified at a minimum distance of 3 inches (75 mm) from the point of welding on each side of the joint.
A liquid penetrant inspection is performed on a stainless steel weld. After removing the excess penetrant, the developer is applied. What does the absence of any indications confirm?
Answer: No surface-breaking discontinuities are present
Liquid penetrant testing is a surface NDT method and only confirms the absence of surface-breaking discontinuities; it cannot detect subsurface defects.
When reviewing a Procedure Qualification Record (PQR), the inspector notes the base metal used was P-1 Group 2. The WPS being supported lists P-1 Group 1 base metal. Under ASME Section IX, is this PQR valid for the WPS?
Answer: Yes, because both are P-1 metals and qualification covers the P-number
Under ASME Section IX, qualification of a P-number covers all base metals within that P-number regardless of group number, unless impact testing is required.
An ultrasonic examination report shows a reflector at 60% DAC (Distance Amplitude Correction). Per AWS D1.1, what action is required?
Answer: Record the indication but it is acceptable without further evaluation
Under AWS D1.1, indications below 20% DAC are acceptable without recording; those at 20–100% DAC must be recorded, but only those exceeding 100% DAC require rejection.