Instructions for use

The albedo dosimeter is the property of the monitoring service and is made available to the customer on a rental basis. When used, it must be permanently assigned to a person for a wearing period (usually one month) and sent to the monitoring service for evaluation after the end of the wearing period, stating the carrier and the exposure conditions. Unused dosimeters should be returned to the monitoring service after a quarter of a year so that they can be baked out ("zeroed") there for reuse, since the dosimeters continuously measure the ambient radiation as well.

With the albedo dosimeter, the energy range for neutrons occurring in routine monitoring is adequately covered. Due to the energy dependence of the neutron response, a distinction is made between four typical application ranges (N1 to N4), into which the radiation protection officer must classify the occupationally exposed persons (see DIN 6802-4).

N1	Reactors (strong shielding)
N2	Nuclear fuel cycle
N3	Radionuclide sources, e.g. 252Cf, 241Am(Be)
N4	High energy accelerator

 

It must be ensured that the dosimeter is only used in the intended area of application. In individual cases, calibration in the respective scattered radiation field may be necessary. Calibrations in the scattered radiation field are carried out in consultation with the measuring point.

The dosimeter is suitable for use at an ambient temperature of +10°C to +40°C and a relative humidity of 10% to 90%. The albedo dosimeter should not be exposed to direct sunlight over 1000 W/m² or mechanical shock over 4900 m/s². If necessary, the dosimeter capsule can be cleaned with a damp cloth. Albedo dosimeters must be protected from moisture and temperatures above +60°C during storage. Care must be taken to ensure that only low levels of ambient radiation and, above all, no thermal neutrons occur at the storage location. The dosimeters must not be opened or mechanically damaged so that the very sensitive detectors are not destroyed or lost.