Calculators
NDT calculators
Every tool applies an explicit formula, shown under the result. Values are indicative: check them against your authorisation and your dosimetry.
- 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.