Visual

Visual inspection is as direct as it sounds – an inspector looks at the pipe to see if it is in good condition. Taking notes and pictures can help document what was seen when the inspection was performed. Naturally, visual inspection works best for failure mechanisms which occur on the outside of pipes.

When visual inspections are conducted, nothing inside the insulation is seen and it is impractical to assume that the inspector is able to examine the top, bottom, and both sides of every length of pipe in the system.

When determining the best method for your industry and company requirements, there are many factors that should be evaluated. Below is a high-level baseline that is a great place to start, including standard requirements and Visual Inspection’s ability to meet these requirements.

REQUIREMENT RESULT
Safety
I need daily operations to continue uninterrupted during facility inspection.

There is no risk of radiation with visual, it is 100% safe to resume operations while testing.

Meets need
Preparation
I do not have/do not want to commit resources to prepare pipes for inspection.

Insulation and pipe do not need to be removed or prepared, however the natural state will exhibit indications of failure only after much damage has occurred.

Meets need with exception
Data
I need accurate information about the state of tested pipe and indications of threat.

There are no measurements collected with visual inspection. Further, record keeping can be difficult. Photos, notes and conclusions drawn from observations make this technique more time-consuming than expected. During audit, visual inspection record keeping can be subject to scrutiny.

Does not meet need
Scope
I need all piping and vessels in my facility or designated inspection area tested.

All piping and vessels in a facility can be visually inspected.

Meets need
Timeliness
I need vulnerabilities in my system identified quickly.

When vulnerabilities are detected with visual, another NDE/NDT method must be applied to investigate further.

Does not meet need

For more information about other NDE/NDE methods for pipe inspection click a technology below.

Ultrasonic Thickness PULSED EDDY CURRENT CONVENTIONAL RADIOGRAPHY REAL-TIME RADIOGRAPHY RADIOMETRIC PROFILING

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