NDT · Luxembourg
NDT tools and radiation protection for Luxembourg
Field calculators for gamma and X-ray radiography: exposure time, geometric unsharpness, zoning and attenuation. The formulas are shown, the constants documented, and nothing leaves your browser. Practical notes on Luxembourg authorisation and ISO 9712 certification round it out.
Calculators
14- 01Gamma exposure timeCalculate the exposure time for a gamma source (Ir-192, Se-75, Co-60) from activity, thickness, distance and film factor.
- 02X-ray exposure timeEstimate the exposure time of an X-ray tube from current, voltage, thickness and focal distance.
- 03Geometric unsharpnessCalculate geometric unsharpness Ug, or the source-to-object distance required for a maximum Ug.
- 04Fixed-site zoningBarriering distances for five dose rate thresholds on a fixed site, with or without a collimator.
- 05Site zoningCalculate barriering distances on site, prorated to the actual exposure time.
- 06Half-value layerCalculate dose rate behind lead, steel or concrete shielding from half-value layers.
- 07Radioactive decayCalculate the activity of a gamma source between two dates, using Ir-192, Se-75 or Co-60 half-life.
- 08Dose rateCalculate dose rate at a given distance for an Ir-192, Se-75 or Co-60 source, with or without a collimator.
- 09Ci ↔ TBq conversionConvert activity between curie and terabecquerel, with the exact factor.
- 10Shielding thicknessCalculate the lead, steel or concrete thickness needed to bring a gamma source dose rate below a threshold.
- 11Source reload plannerCalculate the date a gamma source falls below an activity threshold, from its half-life and current activity.
- 12Unit conversionsConvert activity, equivalent dose, absorbed dose, exposure and lengths between SI and historical units.
- 13Source inventoryA personal log of your sealed sources: automatic decayed activity, JSON export and import, local storage only.
- 14Dose logAdd up the estimated dose of your operations and track the margin left against a reference threshold.
Guides
- Authorising an industrial radiography installation in LuxembourgClassification, procedure, fee, radiation protection officer.
- ISO 9712 certificationLevels I, II and III, and the difference between certification and employer authorisation.
Sources and method
Physical constants (half-lives, gamma constants, HVLs) live in a single constants file, and every page shows the formula it applies. Regulatory pages link to guichet.public.lu and santesecu.public.lu.