Film-Based and Digital
National Techincal Services provides both film-based and digital radiographic services for:
- field inspections
- shop fabrication inspections.
Radiography is one of the most commonly used NDT techniques because it:
- inspects material of varying density and composition
- inspects assembled and in-service components
- requires minimum surface preparation
- detects both surface and subsurface defects
- delivers a permanent record of the inspection.
Conventional film-based radiography is a well-established inspection method and is sometimes preferred because it has a long, successful track record.
National Techincal Services performs inspection with two types of radiation sources:
- X-ray sources
- gamma ray sources.
Choosing the appropriate source depends on the size of the inspection area and the material thickness.
National Techincal Services’s radiographic equipment includes:
- MeV units to inspect large and thick castings and forgings
- portable X-ray cameras for field applications and thin-wall material.
Our processing equipment includes:
- 75 mobile dark rooms throughout the United States and Latin America
- on-site darkroom set-ups for full-time automated processing of large volumes of film.
Digital radiography provides inspection capabilities similar to film-based radiography but with a number of advantages, including:
- greater image clarity and resolution
- instant image delivery without the need for darkrooms
- the ease of archiving digital files.