Objective 05: Visual Inspection

Question 1

What initial visual assessment is performed before any form of inspection?

Answer 1

1. Geometry of the component

2. Type and nature of the defect which is likely to be present

Question 2

What is Visual Inspection the most widely used technique for?

Answer 2

1. Surface Inspection
2. Alignment of Mating Surfaces
3. Evidence of Leaking

Question 3

What does Visual Inspection entail?

Answer 3

Ranges from use of the naked eye to remote visual examination with electronic video systems

Question 4

If Remote Visual Examination is used, what is required of the system?

Answer 4

It must have a resolution capability at least equivalent to that obtained with direct visual observation

Question 5

What can be used to aid Direct Visual Examination?

Answer 5

1. Mirrors
2. Magnifying Lens
3. Artificial Illumination

Question 6

What are the criteria for conducting a Visual Examination?

Answer 6

1. Access allowing placement of the eye within 610 mm of the surface being examined
2. The angle of view must not be less than 30 degrees to the surface being inspected
3. A minimum illumination of 162 lux
4. For study of small anomalies a minimum illumination of 538 lux is required
5. Personnel capable of reading standard J-1 letters on a standard Jaeger eye test chart

Question 7

If a Visual Examination is necessary, are there procedure requirements for an authorized inspector to follow?

Answer 7

Yes

Question 8

What is included in the Visual Examination procedure?

Answer 8

1. How the examination is performed
2. Type of surface condition and criteria for surface cleaning
3. Cleaning instructions or reference to a cleaning procedure
4. Methods and tools used for surface preparation
5. Whether direct or remote viewing is used
6. Special illumination, instruments, or equipment used
7. Sequence of performing the operation, when applicable
8. Data to be tabulated
9. Report forms or statement of examination results