ГЭТ 7-2011 (НИО 210)

Standard name:

Type of measurement:

Structural division: name НИО\НИЛ:

Guardian Scientist:

Year of creation:

Year of re-confirmation:

Operating principle:

Composition of the standard:

Radium sample #5427, 27.96 mg of pure anhydrous radium chloride (21.283 mg Ra-226) in a Thuringian glass ampoule with an internal diameter of 3 mm and a wall thickness of 0.27 mm;
Three-electrode cylindrical ionization chamber - UEI unit;
RKS-01 differential calorimeter - UEK unit;
Semiconductor gamma spectrometer - UES unit.

Verification diagram:

Heads the state verification scheme for measuring instruments for the mass and activity of radium.

Scope of application:

Alpha and gamma radiation sources based on radium and its fission products are used

In geology and geophysics - for exploration of mineral deposits and estimating the quantity of minerals, particularly uranium ores;
In medicine - for the treatment of a wide range of skin and joint diseases using radon baths;
In construction - for assessing the level of radioactive contamination of building materials and selecting construction sites for new facilities, taking into account the level of natural radioactivity and the intensity of radon "leakage" from the surface;
In instrument making - for calibration upon release of devices for measuring radon concentration in the air and other environments;
In environmental protection - for surveying territories, measuring the specific activity of soil and rock samples, the volumetric activity of radon in the air and water, in residential and industrial premises, etc.

Results of applying the standard:

Not specified

The total number of measuring instruments traceable to ГЭТ 7-2011:

Not specified

Ensuring the uniformity of measurements, participation in the CIPM MRA program:

2

Unique technical installations as part of the standard:

Not specified