NDT

Radiography Techniques & Specs

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X-Radiography

At NRL we have developed x-radiography techniques for a comprehensive range of configurations and materials, in accordance with the client and industry test specifications provided in the reference codes page.

We have manufactured a unique tube head positioning system to enable quick and consistent productivity on double wall single image radiography on small bore pipe work.

Equipment currently deployed includes:

  • Philips 160CP Static Bay Unit
  • Philips 160CP Site Unit
  • Philips 100CP Site Unit
  • Rigaku 225KV

 

Gamma Radiography

Ytterbium 169
NRL pioneered the introduction of Ytterbium 169, (Yb169), to the UK industrial radiography market in the late 1970s and continue to use this isotope on a daily basis today. Yb169 is low energy isotope with a very short half life producing a usable working range in steel between 63 KeV and 300 KeV, as such its application to radiography on small bore thin section pipe work produces results with high defect sensitivity and requires a minimal controlled area.  The isotopes are deployed using ‘Viking’ containers and projection equipment affording maximum flexibility and access, combined with in-house designed bespoke local shielding collimators and integral standoff apparatus.

Selenium-75
In 2002, NRL promoted the introduction of Selenium 75, (Se-75), to the civil nuclear market. Se-75 is as higher energy source than Yb169 producing a usable working range in steel between 97 KeV and 401 KeV, as such it is currently controlled by specification on larger bore, thicker section pipe work and plate, producing results with high defect sensitivity and requires a minimal controlled area. The isotopes are also deployed using “Viking” containers and projection equipment affording maximum flexibility and access, combined with in-house designed bespoke local shielding collimators and integral standoff apparatus.

To discuss your requirements or for further information please contact our team.