LMR

Accreditation Certificate LP-022 LP-022_snip

Annex to the Accreditation Certificate LP-022

Type of scope:  flexible (possibility of implementing minor modifications of the method)*
Site: in the laboratory
Testing fields with reference to the type of test: radiochemistry, radiation (alfa, beta, gamma spectrometry, radiation protection measurements)
Testing fields with reference to the type of test item: environment and samples from the environment (water, ground, air, wastes, environment), foodstuffs, biological samples, fuels and lubricants, agricultural products, wood, tobacco products, construction products, materials and structures, industrial materials and products, chemicals, chemical products, cosmetics, plastic and rubber, textile and leather, glass, ceramics, paper, paperboard and packaging

No. Identification of the document, describing the testing method Characteristic or parameter tested Description of test
(type of test, test principle or technique)
Range of testing Items tested
(materials, products)
1. LMR-DN-10 ** / ver. 13 (Oct. 2016)
in-house method

Content of radionuclides:
activity per sample Bq, specific activity Bq/kg or activity concentration Bq/m³

Radionuclides emitting gamma- and X-rays in energy range:
(5–3000) keV)

Measurements of activities of gamma-ray and x-ray emitters in cylindrical homogenous samples with high-resolution gamma-ray spectrometry Range of emissions from the sample:
(0,5•10-2–0,5•105) s⁻¹
Solid and liquid materials
2. ELME-DN-23 *** / ver. 05 (Nov. 2020)
internal method

Content of radionuclides:
activity per sample Bq, specific activity Bq/kg or activity concentration Bq/m³

Radionuclides emitting gamma- and X-rays in energy range:
(5–3000) keV)

Measurements of activities of gamma-ray and x-ray emitters for characterisations of reference materials Range
(0,02 Bq/kg–100 kBq/kg) or
(0,02 Bq/L–100 kBq/L)
depends on radionuclide and material

Measurement uncertainty (expressed as relative value k=2): ≥6 %

solid and fluid materials

* Laboratory can implement minor modifications of the method as necessary (e.g. adaptation to the new version). Detailes on the actual state of the scope is maintained by the laboratory.

** Results of the measurements of activities of gamma-ray and x-ray emitters with gamma-ray spectrometry are reported in the following units: Bq/sample, Bq/m³ for liquid samples and aerosol filters, Bq/kg for solid and liquid samples and Bq/m² for precipitation and soil samples (deposit). Range of testing and detection limits depend on radionuclides and type of material (sample matrix). These data are available upon request in the laboratory.

In October 2016 the regular update of the procedure was performed, the procedure was harmonized with the work performance in the laboratory. Beside this some additional descriptions of analyses in special cases were described.

*** Results of the measurements of activities of gamma-ray and x-ray emitters with gamma-ray spectrometry for characterisation of reference materials are reported in following units: Bq/sample, Bq/m³ for liquid samples and aerosol filters, Bq/kg for solid and liquid samples and Bq/m² for precipitation and soil samples (deposit). Range of testing and detection limits depend on radionuclides and type of material (sample matrix). These data are available upon request in the laboratory. The data for selected radionuclides and materials are available here.

In November 2020 the update of the procedure was performed. The chapter on checking the radioactive equilibria in natural series of Uranium and Thorium was added.

Updated: 18. 1. 2021