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On-spot estimation method of radioactive waste quantity

A radioactive waste and dose rate technology, applied in radiation measurement, X/γ/cosmic radiation measurement, measurement devices, etc., can solve the problems of unfavorable project implementation, long sampling and analysis cycle, high cost, and achieve low cost and shorten sampling. Analyse the cycle and speed up the effect of the work process

Active Publication Date: 2014-09-10
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

[0002] Before the implementation of radioactive decommissioning project or environmental pollution control project, it is necessary to estimate the existing amount of radioactive waste to determine the plan and budget of the decommissioning project. On-site contamination points are sampled and analyzed to estimate the existing amount of radioactive waste. The main disadvantage of this method is that the sampling and analysis period is long and the cost is high, which is not conducive to project implementation.

Method used

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Embodiment

[0014] The method for estimating the amount of radioactive waste in situ of the present invention comprises the following steps:

[0015] 1. Select a dose rate on-site measuring instrument that meets the requirements for stability, sensitivity and detection efficiency;

[0016] 2. The outside of the dose rate field measuring instrument is wrapped with lead and steel in order to form a shield, and an opening is left at the lower end, so as to shield the interference of rays from other areas on the measurement results, so that the response values ​​of the instrument come from the area of ​​interest, forming a directional Measuring devices, and calibration of directional measuring devices experimentally;

[0017] 3. Use the directional measurement device for on-site measurement, establish the corresponding relationship between the dose rate value measured on the spot and the activity concentration value of the on-site sampling analysis, and obtain the response-activity concentrat...

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Abstract

The invention relates to an on-spot estimation method of the radioactive waste quantity. In order to overcome defects existing in radioactive waste quantity estimation of the existing source item investigation work, the invention puts forward the on-spot estimation method of the radioactive waste quantity. The method comprises the following steps: (1), selecting a dosage rate field measurement instrument meeting the requirement; (2), coating the outside of the dosage rate field measurement instrument with lead and steel to form a shielding body with an opening formed at the lower end to form an orientated measuring device, and carrying out scaling on the orientated measuring device; (3), carrying out on-spot measurement on the orientated measuring device so as to obtain a response-activity concentration curve; (4), on the basis of keeping the original landform, carrying out oriented measurement on the pollution level of the ground radioactive waste; and (5), according to the overall situation of the field measurement, directly estimating the total amount of various radioactive wastes. With the estimation method, the sampling analyzing period can be shortened obviously; the work progress of the source item investigation is accelerated; and the cost is low.

Description

technical field [0001] The invention relates to a radioactivity measurement method, in particular to a method for estimating the amount of radioactive waste on site. Background technique [0002] Before the implementation of radioactive decommissioning project or environmental pollution control project, it is necessary to estimate the existing amount of radioactive waste to determine the plan and budget of the decommissioning project. On-site contamination points are sampled and analyzed to estimate the existing amount of radioactive waste. The main disadvantage of this method is that the sampling and analysis period is long and the cost is high, which is not conducive to project implementation. Contents of the invention [0003] In order to solve the above-mentioned problems existing in the estimation of the amount of radioactive waste in the existing source item investigation work, the present invention proposes a method for estimating the amount of radioactive waste in ...

Claims

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Application Information

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IPC IPC(8): G01T1/167
Inventor 文富平王绍林
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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