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MFL Level II Set 1
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1.
What is the fundamental principle of Magnetic Flux Leakage (MFL) testing?
2.
MFL testing is applicable primarily to:
3.
Which defect type is most effectively detected by MFL?
4.
In MFL testing, the test object must first be:
5.
Magnetic flux leakage occurs when:
6.
Which sensor is commonly used in MFL inspection tools?
7.
Ferromagnetic materials have:
8.
The magnetic field used in MFL testing is typically produced by:
9.
The purpose of magnetizing the test object is to:
10.
Flux leakage signals increase when:
11.
Lift-off refers to:
12.
MFL inspection is widely used for:
14.
When a defect is present, magnetic flux tends to:
15.
Which condition produces the strongest leakage signal?
16.
Calibration standards in MFL are used to:
17.
The output signal of an MFL sensor represents:
18.
Which factor affects MFL signal strength?
19.
MFL inspection is best suited for detecting:
20.
Which industry heavily uses MFL technology?
21.
MFL testing does not require:
22.
Magnetic saturation ensures:
23.
Which parameter influences defect detectability?
25.
Magnetic permeability represents:
26.
In MFL inspection tools, data is typically recorded using:
27.
False indications may be caused by:
28.
MFL is ineffective for inspecting:
29.
Which parameter is critical for MFL inspection accuracy?
30.
MFL inspection systems are often mounted on:
31.
Signal interpretation in MFL is based on:
32.
High magnetization levels help:
34.
MFL testing is considered:
35.
A uniform metal thickness results in:
36.
Increasing sensor lift-off will:
37.
MFL inspection can detect:
38.
Data interpretation is typically performed by:
39.
Which parameter helps determine defect size?
40.
MFL inspection results are typically presented as:
41.
If calibration results are outside acceptable limits, the operator should:
42.
During inspection, sensor signals should be monitored for:
43.
Indications detected during inspection should be:
44.
Defect sizing in MFL inspection is typically based on:
45.
Excessive vibration of the inspection head may cause:
46.
The inspection report should include:
47.
Inspection procedures are developed by:
48.
Acceptance criteria used during inspection are defined in:
49.
The Level II technician must ensure that:
50.
If a defect indication exceeds acceptance limits, it should be:
51.
The inspection area must be clearly:
52.
MFL equipment should be inspected for damage:
53.
Sensors in MFL systems detect:
54.
The operator must ensure magnets are:
55.
Environmental conditions affecting inspection may include:
56.
Data interpretation should be performed by:
57.
The purpose of inspection records is to:
58.
If excessive noise appears in the signal, the operator should check:
59.
Inspection results must be:
60.
The final inspection report should be reviewed by:
61.
Tank Floor Inspection During an MFL tank floor scan, a signal shows a high amplitude narrow peak at one location while surrounding signals remain uniform. What is the most likely cause?
62.
Tank Floor Inspection An MFL scan shows broad low-amplitude signals across a large area of the tank bottom. This most likely indicates:
63.
Tank Floor Inspection A signal appears repeatedly at regular intervals along a weld seam. What is the most likely interpretation?
64.
Pipeline Pig Inspection During pipeline MFL pigging, a sharp high-amplitude signal is recorded with a narrow signal width. This usually indicates:
65.
Pipeline Pig Inspection An MFL pig records continuous low-level signals over several meters.This is most likely:
66.
Pipeline Pig Inspection If the MFL pig shows multiple sharp signals close together, the most probable cause is:
67.
Pipeline Pig Inspection A signal suddenly disappears after strong indications earlier in the run. This may indicate:
68.
Tube Inspection During tube MFL inspection, a signal appears with moderate amplitude and moderate width.This usually corresponds to:
69.
Tube Inspection A very narrow and sharp signal peak is detected in a tube inspection scan. The most likely cause is:
70.
Tube Inspection Repeated signals appearing at equal spacing along the tube length are likely due to: