Visual Inspection: Asme - Section 5 - Article 9

VISUAL INSPECTION ASME – SECTION 5 – ARTICLE 9

PURPOSE :-

Observation or inspection of test surface by using either or all of raw hum human an senses such as vision, hearing, touch and smell and/or any non-specialized inspection equipment.

Visual testing is used in all industries and at every step of a component’s lifecycle. VT NDT can easily find and evaluate the ffollowing ollowing DISCONTINUITY TYPES: -

Cracks Holes Corrosion Blisters Impact damages Most other discontinuities that are surface breaking or result in a deformation at the surface

The eye :➢

Human eye is the most valuable NDT tool. ➢Human eye having an excellent visual perception. ➢Sensitivity of human eye will be change based on the light source. ➢Yellow and

green color light with wavelength

of 5560°A is the most suitable light or human eye at normal condition.

Advantages of visual inspection:➢Low

cost inspection

➢Portable equipment ➢Quick

➢Less

method

maintenance

➢We can get spot results