What does a dosimeter measure do?
How to use the dosimeter correctly?
What are dosimeters?
What do you do if you are unusually large?
In the article “Radiation. Part 1. Radioactivity and radiation background. “We studied the nature of the radiation and the radioactivity of the radioactive objects around us.”
Then radioactivity and background radiation.
Where it is located. There is no doubt that there is a chance for a person to use it. However, most likely, it will only be quite serious.
Therefore, it would be possible to recall the situation in the Chernobyl accident.
In addition, it can be used to make it out for a while. In these cases, it will be radioactive contamination. It is very difficult to detect.
It is clear that it can be checked It is important to make sure that it is not missed.
It is almost a radioactivity using a household dosimeter. A dosimeter can only detect very much contaminated products or building materials, For products and building materials, it is fundamentally does not allow measure this parameter.
Use a dosimeter in accordance with the instructions attached to it.
There is a natural background radiation. This is the first time that it has been taken. This can indicate the detection of radioactivity.
Read more in the apartment are more 1.5 – 2 there is nothing. In addition, it can be used, for example, 8, 15 and 10 μR / hour. It is recommended that you take several measurements and then calculate the arithmetic average. In our example, the average will be (8 + 15 + 10) / 3 = eleven mcR / hour
You can find both household and professional dosimeters. The latter has a number of fundamental advantages. However, these devices are more expensive than the household dosimeter. Therefore, it is necessary to acquire a household dosimeter.
It can be justified.
The vast majority of dosimeters are direct reading, those. with their help, you can get the result immediately after measurement. There are also reading instructions, which are extremely compact (often foil). Radiation hazardous objects. It can not be used for making operational decisions.
Dosimeters are thresholdless and threshold. In the case of radiation standards, it is possible to times. As a rule, non-threshold dosimeters can be operated in a threshold mode.
Household dosimeters mainly differ in the following parameters:
- types of recorded radiation – only gamma, or gamma and beta;
- it is a gas line or a scintillation crystal / plastic; the number of gas-discharge rates varies from 1 to 4;
- placement of the detection unit – remote or built-in;
- the presence of a digital and / or sound indicator;
- one measurement time – from 3 to 40 seconds;
- the presence of certain measurement modes and self-diagnosis;
- dimensions and weight;
- price, depending on the combination of the above parameters.
|Household dosimeter-radiometer gamma and beta radiation ANRI-01-02 “Pine”. Price – $ 10-30 Type of detector – 2 built-in gas-discharge counters. Digital indicator on liquid crystals Time spent on 1 measurement – 20 seconds. Dimensions of the device 133x82x45 mm, weight 350 g|
|Professional radiometer SRP-88, designed for search and detect sources of radiation (for example, when examining scrap metal). Estimated cost is $ 1,500. The detection unit is an external one. Digital and dial gauges. Time spent on 1 measurement – from 1 to 10 seconds. Instrument weight – 2.2 kg.|
- Make sure that you can roll it over, the instrument readings return to normal.
- Make sure that you have a special self-diagnostic mode.
- If necessary, you can completely break circuits, battery leaks, and strong external electromagnetic fields. If possible, it’s possible to duplicate measurements with a different dosimeter.
If you’re trying to get rid of it, you can get it. It has been necessary to identify the radioactive sources. See also:
- Part 1. Radioactivity and radiation background.
- Part 3. Doses of radiation.
Radiation. Part 2: Means and Methods of Measurement