Visual Test

Most basic and common inspection method.

Tools include fiberscopes, borescopes, magnifying glasses and mirrors.

Portable video inspection unit with zoom allows inspection of large tanks and vessels, railroad tank cars, sewer lines

Robotic crawlers permit observation in hazardous or tight areas, such as air ducts, reactors, pipelines.

Visual inspection is commonly defined as “the examination of a material, component, or product

for conditions of nonconformance using light and the eyes, alone or in conjunction with various


Visual inspection often also involves, shaking, listening, feeling, and sometimes even smelling the

component being inspected.

Visual inspection consists of at least two major processes.

The first is a search process.

The second is a process of combining relevant knowledge, sensory input, and pertinent logical

processes to provide an identification that some anomaly or pattern represents a flaw that poses

a risk to the performance of the part.

Visual inspection is commonly employed to support other NDT methods.

Digital detectors and computer technology have made it possible to automate some visual

inspections. This is known as “machine vision inspection.”

Course Name

Level of Certification

Duration of Course

Training Hours


Visual Test

VT Level - I

03 Days

20 Hours

General Exam

40 Questions

Specific Exam

20 Questions

Practical Exam

1 Specimen

Visual Test

VT Level - II

05 Days

40 Hours

General Exam

40 Questions

Specific Exam

20 Questions

Practical Exam

2 Specimen