CN112000921B - Evaluation system based on nuclear facility environmental monitoring data - Google Patents
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 337
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- 238000000034 method Methods 0.000 claims abstract description 37
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- 230000002285 radioactive effect Effects 0.000 claims description 5
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Abstract
The invention discloses an evaluation system based on nuclear facility environment monitoring data, which comprises: the system comprises an environment monitoring point location information base, an environment monitoring method information base, an environment monitoring data statistics base, an environment monitoring data processing system and an environment monitoring evaluation database. The invention can realize the storage, statistics and processing of the daily environment monitoring data of the nuclear facility, complete the evaluation of the radiation dose of the surrounding public caused by the environment monitoring data of the nuclear facility, and more intuitively and convincingly give the environmental influence caused by the current running situation of the nuclear facility and the radiation level change of the surrounding environment of the nuclear-based multi-year running.
Description
Technical Field
The invention relates to the field of radiation environment influence evaluation, in particular to an evaluation system based on nuclear facility environment monitoring data.
Background
The first nuclear facilities in China began in the 60 th 20 th century, and have been developed for 60 years so far. Radioactive pollutants generated in the operation process of various facilities are discharged into the environment through the paths of atmosphere, water and the like, influence is generated on the surrounding environment, and radiation irradiation is generated to the public.
In order to ensure that the radiation effect caused by the operation of the nuclear facility is controllable, environmental impact evaluation is required to be carried out before the construction of a nuclear facility project, and the environmental impact possibly caused by pollutant emission after the implementation of the evaluation construction project is predicted. The environmental impact evaluation before the nuclear facility project construction is based on the design production capacity, the processing and disposal capacity of the nuclear facility, the discharge amount of radioactive nuclides is obtained according to a mature engineering analysis method, a material balance, an empirical method and the like, and the public radiation dose prediction estimation of an evaluation range is completed based on site characteristic meteorological parameters, population parameters, recipe parameters and the like. Based on the examination mode of China on nuclear facility construction projects, the radiation environment influence evaluation mode of the nuclear facilities at present mostly adopts the evaluation mode of effluent monitoring data, namely predictive evaluation. A certain error exists between a design emission source item and an actual production operation source item adopted by the predictive evaluation, so that a slightly conservative release source item is mostly adopted for evaluation in the evaluation process, and the conservation of the evaluation is caused.
In addition, according to the standard requirements of the current facility construction regulations in China, the construction of a single facility in the nuclear foundation ground is required to be subjected to predictive evaluation independently. However, the nuclear foundation contains a plurality of facilities, the facilities are operated for years, and the radiation effect of the plurality of facilities and a plurality of discharge ports on the surrounding environment is not required to be evaluated. That is, the current national regulation standard does not stipulate the current environmental evaluation of nuclear facility operation radiation. The environmental impact and dose of ambient radiation over many years of operation of nuclear facilities is not clear.
It is required that nuclear facility operating units should monitor the species, concentration, and total amount of radionuclides contained in the nuclear facility environment. Therefore, the nuclear facility regularly monitors the species and concentration of the radionuclide contained in the environment around the nuclear facility during actual production operation. After the nuclear facility runs for many years, a large amount of radiation environment monitoring data are accumulated, the accumulated environment monitoring result can more visually reflect the variation of the concentration of nuclides in an environment medium of the nuclear facility during the running period and the concentration of nuclides in the environment medium before the facility is put into operation to a certain extent, and the radiation influence on the surrounding environment during the running period of the nuclear facility is distinguished through the variation. Therefore, the evaluation by adopting the daily environmental monitoring data of the nuclear facility is based on the actual measurement result of the environmental medium operated by the conventional nuclear facility, and is used for evaluating the current state and the integrity of the operation of the nuclear facility.
Therefore, compared with a prediction evaluation mode based on effluent monitoring data, the radiation environment influence evaluation based on the environment monitoring data can quantitatively evaluate the environment influence caused by the radionuclide release of the nuclear facility more intuitively, and is more suitable for the current situation and retrospective radiation environment influence evaluation of the existing nuclear facility.
At present, statistical systems of nuclear facility effluents and environmental monitoring data are developed domestically, but an evaluation system based on a large amount of nuclear facility environmental monitoring statistical data is not established. In order to more intuitively acquire the radiation influence of the nuclear facility operation, an evaluation system based on nuclear facility environment monitoring data needs to be designed urgently to realize the evaluation of the current situation of the nuclear facility radiation environment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an evaluation system based on nuclear facility environment monitoring data, which can realize public radiation dose evaluation of the nuclear facility environment monitoring data.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
an evaluation system based on nuclear facility environmental monitoring data, comprising:
the environment monitoring point location information base is used for storing an environment monitoring scheme, an environment monitoring distribution point diagram and monitoring point location information, wherein the environment monitoring scheme comprises monitoring time, monitoring objects, monitoring nuclides, monitoring frequency, sampling point names and sampling points, and the monitoring point location information comprises the names of the monitoring points, the monitoring objects and the monitoring distribution point locations;
the environment monitoring method information base is used for storing analysis and measurement methods, monitoring instruments, instrument detection limits, monitoring units, monitoring time and monitoring objects adopted by each monitoring;
the environment monitoring data statistics base is used for counting the monitoring data of each environment medium of each monitoring point in each year and the environment background data of a field site based on the environment monitoring point location information base, wherein the monitoring data comprises monitoring objects, monitoring point locations, monitoring nuclides, monitoring time, monitoring results and monitoring units of the environment;
the environment monitoring data processing system is used for processing the monitoring result based on the environment monitoring data statistical library and the environment monitoring method information library, counting the monitoring range of each environment medium of each monitoring point in each year and calculating the average concentration;
and the environment monitoring evaluation database is used for calculating public dosage caused by each nuclide at each monitoring point based on the environment monitoring data statistical database and the environment monitoring data processing system.
Further, an evaluation system based on nuclear facility environmental monitoring data as described above, each environmental medium includes atmosphere, surface water, underground water, soil, sediment, organisms;
the monitoring nuclide is divided into a uranium mining and metallurgy facility, a nuclear power plant, a nuclear fuel circulation facility and a post-treatment facility according to the type of nuclear facility, and the monitoring nuclide of the uranium mining and metallurgy facility comprises penetration dosage rate, U-234, U-235, U-238, 226 Ra, radon and radon daughter, 210 Po、 210 Pb, nuclear power plant monitoring nuclides including penetration dose rate, 3 H、 14 C、 90 Sr, gamma nuclides, total alpha, total beta, monitoring nuclides of a nuclear fuel circulation facility comprise the throughout dosage rate, U-234, U-235, U-238, total alpha, total beta, monitoring nuclides of a post-processing facility comprise the throughout dosage rate, total alpha, total beta, and the like, 90 Sr、 137 Cs、 239 Pu、 3 H、 14 C、 129 I。
Further, the evaluation system based on the environmental monitoring data of the nuclear facility as described above, the statistical database of environmental monitoring data is further configured to:
classifying and storing the monitoring data according to a uranium mining and metallurgy facility, a nuclear power plant, a nuclear fuel circulation facility and a post-processing facility;
automatically identifying whether the monitoring data is executed according to an environment monitoring scheme in the environment monitoring point location information base, and setting a reminding function for points which are not monitored, the monitoring frequency which is not executed according to the environment monitoring scheme and nuclides which are not monitored;
and recording the monitoring results of the natural radioactive nuclide and the gamma dose rate into the background of the regional environment.
Further, an evaluation system based on nuclear facility environmental monitoring data as described above, the environmental monitoring data processing system calculating the average concentration by the following formula:
S average ＝∑S i /n
Wherein S is Average out Is the average concentration, S i The ith monitoring data is n, and the number of the monitoring data is n.
Further, the evaluation system based on the nuclear facility environment monitoring data as described above, the environment monitoring data processing system is specifically configured to:
for the monitoring result of the artificial radionuclide, counting the monitoring range and the average concentration of each environmental medium of each monitoring point in each year;
for the monitoring result of the natural radionuclide, automatically calling environment background data in the environment monitoring data statistical library, deducting the background monitoring result of each monitoring point, and counting the monitoring range and average concentration of each environmental medium of each monitoring point in each year;
and deducting the background monitoring result of each monitoring point position from the gamma dose rate monitoring result, and counting the monitoring range and the average concentration of each monitoring point position.
Further, the evaluation system based on the nuclear facility environment monitoring data as described above, the environment monitoring data processing system is specifically configured to:
when the average concentration of each environment medium of each monitoring point in each year is calculated, and when the monitoring result is lower than the instrument detection limit in the environment monitoring method information base, half of the instrument detection limit is automatically called as the monitoring result.
Further, an evaluation system based on nuclear facility environment monitoring data as described above, the environment monitoring evaluation database comprising:
the monitoring data query module is used for receiving a nuclear facility name, a nuclide name, a monitoring point location name, a monitoring object and/or monitoring time input by a user and screening the monitoring object and/or the monitoring time from the environmental monitoring data statistical library to obtain a monitoring result list;
the nuclide information module is used for storing basic information of each nuclide, and the basic information comprises information parameters of nuclide names, inhalation dosage rate conversion factors, air immersion external irradiation conversion factors, surface deposition external irradiation conversion factors and ingestion dosage conversion factors;
the site area recipe data module is used for storing the recipe data, the food intake and all parameters required by evaluation in the site evaluation range;
and the dose evaluation module is used for calculating the public dose caused by each nuclide based on the environment monitoring data statistical library, the environment monitoring data processing system, the nuclide information module and the site region recipe data module.
Further, the evaluation system based on the nuclear facility environment monitoring data is specifically configured to calculate the public dose caused by each nuclear species, where the public dose caused by each nuclear species includes an external exposure dose, an inhaled dose, and an ingested dose, and is calculated by the following formula:
H E(atoms),i (x)＝H E(inh),i (x)+H E(ing),f,r,i (x)+H E(ex),i (x) (1)
H E(atoms),i (x) The method comprises the following steps Public dose due to nuclide i, sv;
H E(inh),i (x) The method comprises the following steps Inhaled dose of nuclide i, sv;
H E(ing),f,r,i (x) The method comprises the following steps The ingestion dose of nuclide i, sv;
H E(ex),i (x) The method comprises the following steps External radiation dose of nuclide i, sv;
1) The inhaled dose is calculated by the following formula to obtain H in the formula (1) E(inh),i (x)：
C air,i (x) The method comprises the following steps Concentration of a nuclide i in air, bq/m, at a distance x from the release point x 3 ；
D inh,i : an inhaled dose conversion factor for nuclide i, sv/Bq;
I inh : respiration rate, m 3 /d；
86400: conversion factor, s/d;
O ann : annual residence time, 3.15X 10 7 s；
x: distance, m, from the release point to the calculation point;
2) The dose of the food to be ingested is calculated by the following formula to obtain H in the formula (1) E(ing),f,r,i (x)：
H E(ing),f,r,i (x)＝C f,i (x)·D ing,i ·F local ·I f,r (3)
H E(ing),f,r,i (x) The method comprises the following steps The ingestion dose of nuclide i, sv;
C f,i (x) The method comprises the following steps The concentration of the nucleic acid i in the product/drinking water, bq/kg or Bq/L;
D ing,i : an ingestion dose conversion factor of nuclide i, sv/Bq;
F local : a local share of food;
I f,r : intake of various products/drinking water of residents, kg/a or L/a;
3) The external irradiation dose is calculated by the following formula to obtain H in the formula (1) E(ex),i (x)：
H E(ex),i (x)＝(D-D 0 )×T (4)
D: monitoring results of environment gamma dose rate at the monitoring point, namely Sv/h;
D 0 : monitoring a background monitoring result of the point location, sv/h;
t: time of exposure to the outside by the public, h.
Further, in an evaluation system based on environmental monitoring data of a nuclear facility as described above, the public dose of radionuclide tritium includes the dose of inorganic tritium and organic tritium.
The invention has the beneficial effects that: the invention can realize the storage, statistics and processing of the daily environment monitoring data of the nuclear facility through the environment monitoring point location information base, the environment monitoring method information base, the environment monitoring data statistics base and the environment monitoring data processing system, and can complete the evaluation of the radiation dose of the surrounding public based on the environment monitoring data of the nuclear facility through the environment monitoring evaluation database, thereby more intuitively and convincingly providing the environmental influence caused by the current operation situation of the nuclear facility and the radiation level change of the surrounding environment operated on a nuclear base for many years.
Drawings
Fig. 1 is a block diagram of a framework of an evaluation system based on nuclear facility environmental monitoring data according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1, an evaluation system based on nuclear facility environment monitoring data includes: the system comprises an environment monitoring point location information base, an environment monitoring method information base, an environment monitoring data statistics base, an environment monitoring data processing system and an environment monitoring evaluation database.
(1) Environmental monitoring point location information base
The environment monitoring point location information base comprises: the system comprises an environment monitoring scheme, an environment monitoring distribution diagram and monitoring point location information. The environment monitoring scheme comprises monitoring time, a monitored object, monitoring nuclides, sampling frequency, sampling point names and sampling point numbers. The monitoring point location information can give names of all monitoring point locations, monitoring objects and monitoring point distribution positions (relative azimuth and distance from the site).
(2) Environment monitoring method information base
The environment monitoring method information base is mainly used for storing information such as analysis and measurement methods, monitoring instruments, detection limits of the monitoring instruments, monitoring units, monitoring time and the like adopted by each monitoring.
(3) Statistical database of environmental monitoring data
The environment monitoring data statistical base is used for counting the annual monitoring data and the environment background data of each environment medium. The method mainly comprises the steps of monitoring objects, point positions, nuclides, monitoring time and monitoring results of the environment. The monitoring medium comprises atmosphere, surface water, underground water,Soil, sediment, organisms. The monitoring nuclides are divided into uranium mining and metallurgy facilities, nuclear power plants, nuclear fuel circulation facilities and post-treatment facilities according to the types of nuclear facilities, and the monitoring nuclides of the uranium mining and metallurgy facilities are penetration dosage rates, U (U-234, U-235, U-238), 226 Ra, radon and radon daughter, 210 Po、 210 Pb and the like; the monitoring nuclide of the nuclear power plant is penetration dosage rate, 3 H、 14 C、 90 Sr, gamma nuclide, total alpha, total beta, etc.; the monitoring nuclides of the nuclear fuel circulation facility are penetration dosage rate, U (U-234, U-235 and U-238), total alpha, total beta and the like; the monitored nuclides of the post-treatment facility are penetration dosage rate, 90 Sr、 137 Cs、 239 Pu、 3 H、 14 C、 129 I, and the like. And recording the monitoring results of natural nuclides and gamma dose rates into the background of the regional environment. The monitoring time is divided into 1 time/month, 1 time/quarter, 1 time/half year and 1 time/year. And the monitoring result gives the monitoring result of each point position in the past. The environment monitoring data statistical library can automatically identify whether the monitoring data is executed according to the environment monitoring scheme of the monitoring point location information library, and set reminding functions for points which are not monitored, nuclides which are not monitored and have monitoring frequency which is not executed according to a monitoring plan.
The environmental monitoring data statistical library stores data according to uranium mining and metallurgy facilities, nuclear power plants, nuclear fuel circulation facilities and three-waste treatment facilities in a classified mode, and if the names of the nuclear power plants under the nuclear power plant facilities comprise a nuclear power plant A, a nuclear power plant B and the like. And A, monitoring data of each year and each nuclide are set under the nuclear power plant.
(4) Environmental monitoring data processing system
The environment monitoring data processing system is internally provided with a data statistical analysis function. For the artificial radioactive nuclide (tritium-containing), the data change range and the average monitoring data of each environmental medium and each monitoring point position in each year are obtained through statistics. For natural radionuclides (uranium, thorium, radium and the like), the data statistical analysis function has a background deduction function of monitoring data, the natural background data of the environmental monitoring data statistical library is automatically called, deduction of the background monitoring data of each point is completed, and a concentration change range and average concentration are given. For the monitoring result of the gamma dose rate, the deduction of background monitoring data of each point can be completed, and the data change range and the average concentration are given.
And when the average concentration of the monitoring data is calculated by the data statistical analysis function, when the monitoring result is lower than the data (< LLD) of the instrument detection limit, automatically calling 1/2 of the instrument detection limit data of the environment monitoring method information base as the monitoring result.
(5) Environmental monitoring evaluation database
The environment monitoring and evaluation database is internally provided with a monitoring data query module, a nuclide information module, a field address region recipe data module and a dosage evaluation module. The average monitoring result of the monitoring point location information base can be automatically called, and the estimation of the concentration of the environment medium at different point locations is completed. And calling population recipe data to finish public dosage evaluation in different areas.
The monitoring data query module is internally provided with a screening function, and can input a nuclear facility name, a nuclide name, a monitoring point name, a monitoring object and monitoring time to screen out a monitoring result list.
The nuclide information module is used for storing basic information of each nuclide, and the basic information comprises information parameters of nuclide names, inhalation dosage rate conversion factors (DFinh), air immersion external irradiation conversion factors (DFclo), surface deposition external irradiation conversion factors (DFdep) and ingestion dose conversion factors (DFing).
And the site region recipe data module is used for storing parameters such as recipe data of a site evaluation range, food intake, respiratory rate required by evaluation and the like.
The dose evaluation module is used for estimating the public radiation dose influence by adopting the environment monitoring data. The dose evaluation module gives out public dose evaluation results according to the ways of external irradiation dose, dosage of various products eaten, drinking water dose and inhalation dose. The public dose caused by nuclides includes external irradiation dose, inhalation dose, and ingestion dose (including drinking water), and is calculated by the following formula. Radionuclide tritium doses should include doses of inorganic tritium (HTO) and organic tritium (OBT).
H E(atoms),i (x)＝H E(inh),i (x)+H E(ing),f,r,i (x)+H E(ex),i (x) (1)
H E(inh),i (x) The method comprises the following steps The inhaled dose Sv;
H E(ing),f,r,i (x) The method comprises the following steps The dietary dose, sv;
H E(ex),i (x) The method comprises the following steps External radiation dose, sv.
1) The inhaled dose is calculated by the following formula to obtain H in the formula (1) E(inh),i (x)：
C air,i (x) The method comprises the following steps Concentration of a nuclide i in air, bq/m, at a distance x from the release point x 3 ；
D inh,i : an inhaled dose switching factor, sv/Bq;
I inh : respiration rate, m 3 /d；
86400: conversion factor, s/d;
O ann : annual residence time, 3.15X 10 7 s；
x: distance, m, from the release point to the calculation point;
2) The dose of the food to be ingested is calculated by the following formula to obtain H in the formula (1) E(ing),f,r,i (x)：
H E(ing),f,r,i (x)＝C f,i (x)·D ing,i ·F local ·I f,r (3)
H E(ing),f,r,i (x) The method comprises the following steps The ingestion dose of nuclide i, sv;
C f,i (x) The method comprises the following steps The concentration of the nucleic acid i in the product/drinking water, bq/kg or Bq/L;
D ing,i : an ingestion dose conversion factor of nuclide i, sv/Bq;
F local : a local share of food;
I f,r : intake of various resident products/drinking water, kg/a or L/a;
3) The external irradiation dose is calculated by the following formula to obtain H in the formula (1) E(ex),i (x)：
H E(ex),i (x)＝(D-D 0 )×T (4)
D: monitoring results of environment gamma dose rate at the monitoring point, namely Sv/h;
D 0 : monitoring a point position background monitoring result, sv/h;
t: time of exposure to the public, h.
Example one
Taking a certain nuclear power plant as an example, the radiation dose caused by the uptake of radionuclide tritium by the public in village A in 2018 of the nuclear power plant through different ways is calculated.
The environment monitoring point location information base collects and stores environment monitoring schemes and environment monitoring distribution maps around each facility, and monitoring point location information is stored. The environment monitoring scheme is shown in table 1, and the monitoring point location information is shown in table 2.
TABLE 1 environmental monitoring scheme
| Monitoring point location names | Monitoring an object | Distance field position | Relative distance to field site |
| Village A | HTO、OBT | WNW | 2.3km |
| Village B | HTO、OBT | WSW | 2.8km |
| … |
TABLE 2 environmental monitoring Point location information
The environment monitoring method information base stores information such as analysis and measurement methods, monitoring instruments, detection limits of the monitoring instruments, monitoring units, monitoring time and the like adopted by each monitoring. The statistical content of the environmental monitoring method information base is shown in table 3.
TABLE 3 environmental monitoring method information base
And the environment monitoring data statistical library is used for counting the monitoring data of each environment medium in each year and the environment background data of the field address. The environmental monitoring data statistics library (taking the statistics of the tritium monitoring data as an example) is shown in table 4.
Table 4 environmental monitoring results
The environment monitoring data processing system counts the annual monitoring range of each monitoring point and calculates the average concentration (S) Average ＝∑S i N, wherein S i For each monitoring data, n is the number of monitoring data), table 5 below lists the results of processing the a village fraction tritium monitoring data.
TABLE 5 results of environmental monitoring data processing
The environment monitoring and evaluation database is internally provided with a monitoring data query module, a nuclide information module, an address area recipe data module and a dosage evaluation module. The database query module inputs 'a certain nuclear power plant, tritium, village A and 2018', and monitoring results can be automatically identified. The screening results are shown in Table 6.
TABLE 6 monitoring results of tritium uptake by public in A village in 2018 of certain nuclear power plant
The nuclide information module calls basic information of nuclide tritium, the site region recipe data module gives recipe data and food intake of the public in village A, and the result is shown in table 7.
TABLE 7 evaluation parameters of A village tritium in 2018 years of certain nuclear power plant
The results of the dose evaluations calculated from the data in tables 6 and 7 and the evaluation mode used by the dose evaluation module are shown in table 8.
TABLE 8 results of tritium intake in 2018 years from A village public in certain nuclear power plant via different routes
The embodiment shows that the system can realize the storage, statistics and processing of the daily environment monitoring data of the nuclear facility and finish the evaluation of the radiation dose of the surrounding public caused by the environment monitoring data of the nuclear facility. The environmental influence caused by the operation status of the nuclear facility and the radiation level change of the environment around the nuclear-based multi-year operation are more intuitively and convincingly given.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (7)
1. An evaluation system based on nuclear facility environmental monitoring data, comprising:
the environment monitoring point location information base is used for storing an environment monitoring scheme, an environment monitoring point location map and monitoring point location information, wherein the environment monitoring scheme comprises monitoring time, monitoring objects, monitoring nuclides, monitoring frequency, sampling point names and sampling points, and the monitoring point location information comprises the names of the monitoring point locations, the monitoring objects and the monitoring point location;
the environment monitoring method information base is used for storing analysis and measurement methods, monitoring instruments, instrument detection limits, monitoring units, monitoring time and monitoring objects adopted by each monitoring;
the environment monitoring data statistics base is used for counting the monitoring data of each environment medium of each monitoring point in each year and the environment background data of the site based on the environment monitoring point location information base, wherein the monitoring data comprises an environment monitoring object, a monitoring point location, a monitoring nuclide, monitoring time, a monitoring result and a monitoring unit;
the environment monitoring data processing system is used for processing the monitoring result based on the environment monitoring data statistical library and the environment monitoring method information library, counting the monitoring range of each environment medium of each monitoring point in each year and calculating the average concentration;
the environment monitoring evaluation database is used for calculating public dose caused by each nuclide at each monitoring point based on the environment monitoring data statistical database and the environment monitoring data processing system;
the environmental monitoring evaluation database includes:
the monitoring data query module is used for receiving a nuclear facility name, a nuclide name, a monitoring point location name, a monitoring object and/or monitoring time input by a user, and screening the monitoring object and/or the monitoring time from the environment monitoring data statistical library to obtain a monitoring result list;
the nuclide information module is used for storing basic information of each nuclide, and the basic information comprises information parameters of nuclide names, inhaled dose rate conversion factors, air immersion external irradiation conversion factors, surface deposition external irradiation conversion factors and ingestion dose conversion factors;
the site area recipe data module is used for storing the recipe data, the food intake and all parameters required by evaluation in the site evaluation range;
the dose evaluation module is used for calculating public dose caused by each nuclide based on the environmental monitoring data statistical library, the environmental monitoring data processing system, the nuclide information module and the site region recipe data module;
the dose evaluation module is specifically used for calculating public doses caused by each nuclide, wherein the public doses caused by each nuclide comprise an external irradiation dose, an inhaled dose and an ingested dose, and are calculated according to the following formula:
H E(atoms),i (x)＝H E(inh),i (x)+H E(ing),f,r,i (x)+H E(ex),i (x) (1)
H E(atoms),i (x) The method comprises the following steps Public dose due to nuclide i, sv;
H E(inh),i (x) The method comprises the following steps Inhaled dose of nuclide i, sv;
H E(ing),f,r,i (x) The method comprises the following steps The ingested dose of nuclide i, sv;
H E(ex),i (x) The method comprises the following steps External radiation dose of nuclide i, sv;
1) The inhaled dose is calculated by the following formula to obtain H in the formula (1) E(inh),i (x)：
C air,i (x) The method comprises the following steps Concentration of a nuclide i in air, bq/m, at a distance x from the release point x 3 ；
D inh,i : an inhaled dose conversion factor for nuclide i, sv/Bq;
I inh : respiration rate, m 3 /d；
86400: conversion factor, s/d;
O ann : annual residence time, 3.15X 10 7 s；
x: distance, m, from the release point to the calculation point;
2) The dose of the food to be ingested is calculated by the following formula to obtain H in the formula (1) E(ing),f,r,i (x)：
H E(ing),f,r,i (x)＝C f,i (x)·D ing,i ·F local ·I f,r (3)
H E(ing),f,r,i (x) The method comprises the following steps The ingested dose of nuclide i, sv;
C f,i (x) The method comprises the following steps The concentration of the nucleic acid i in the product/drinking water, bq/kg or Bq/L;
D ing,i : an ingestion dose conversion factor of nuclide i, sv/Bq;
F local : a local share of food;
I f,r : intake of various products/drinking water of residents, kg/a or L/a;
3) The external irradiation dose is calculated by the following formula to obtain H in the formula (1) E(ex),i (x)：
H E(ex),i (x)＝(D-D 0 )×T (4)
D: monitoring the monitoring result of the environment gamma dose rate at the point location, namely Sv/h;
D 0 : monitoring a background monitoring result of the point location, sv/h;
t: time of exposure to the public, h.
2. The evaluation system based on the nuclear facility environment monitoring data according to claim 1, wherein each environment medium comprises atmosphere, surface water, underground water, soil, sediment, organisms;
the monitoring nuclide is divided into a uranium mining and metallurgy facility, a nuclear power plant, a nuclear fuel circulation facility and a post-treatment facility according to the type of nuclear facility, and the monitoring nuclide of the uranium mining and metallurgy facility comprises a penetration dosage rate, U-234, U-235, U-238, a post-treatment unit, 226 Ra, radon and radon daughter, 210 Po、 210 Pb, nuclear power plant monitoring nuclides including penetration dose rate, 3 H、 14 C、 90 Sr, gamma nuclides, total alpha, total beta, monitoring nuclides of a nuclear fuel circulation facility comprise the throughout dosage rate, U-234, U-235, U-238, total alpha, total beta, monitoring nuclides of a post-processing facility comprise the throughout dosage rate, total alpha, total beta, and the like, 90 Sr、 137 Cs、 239 Pu、 3 H、 14 C、 129 I。
3. The system according to claim 2, wherein the environmental monitoring data statistics repository is further configured to:
classifying and storing the monitoring data according to uranium ore smelting facilities, nuclear power plants, nuclear fuel circulation facilities and post-processing facilities;
automatically identifying whether the monitoring data is executed according to an environment monitoring scheme in the environment monitoring point location information base, and setting a reminding function for points which are not monitored, the monitoring frequency which is not executed according to the environment monitoring scheme and nuclides which are not monitored;
and recording the monitoring results of the natural radioactive nuclide and the gamma dose rate into the background of the regional environment.
4. The system of claim 1, wherein the environmental monitoring data processing system calculates the average concentration by:
S average ＝∑S i /n
Wherein S is Average out Is the average concentration, S i The ith monitoring data is n, and the number of the monitoring data is n.
5. The system according to claim 1, wherein the environmental monitoring data processing system is configured to:
for the monitoring result of the artificial radionuclide, counting the monitoring range and the average concentration of each environmental medium of each monitoring point in each year;
for the monitoring result of the natural radionuclide, automatically calling environment background data in the environment monitoring data statistical library, deducting the background monitoring result of each monitoring point, and counting the monitoring range and average concentration of each environment medium of each monitoring point in each year;
and deducting the background monitoring result of each monitoring point position from the gamma dose rate monitoring result, and counting the monitoring range and the average concentration of each monitoring point position.
6. The evaluation system based on the nuclear facility environment monitoring data according to claim 1, wherein the environment monitoring data processing system is specifically configured to:
when the average concentration of each environment medium of each monitoring point in each year is calculated, and when the monitoring result is lower than the instrument detection limit in the environment monitoring method information base, half of the instrument detection limit is automatically called as the monitoring result.
7. The nuclear facility environmental monitoring data-based evaluation system of claim 6, wherein the public dose of radionuclide tritium further comprises doses of inorganic tritium and organic tritium ingested.
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