CN106469245A - The Annul radiation dose computational methods of nuclear power plant's liquid radioactive substance and system - Google Patents

Abstract

The invention discloses a kind of radiation dose of nuclear power plant liquid radioactive substance calculates method and system, belong to nuclear power plant's radiation environment impact evaluation technical field.The method includes：Collect region to be evaluated for calculate under the nominal situation of nuclear power plant liquid approach radionuclide year Net long wave radiation dosage source data；Liquid emission approach radionuclide is calculated to the Annul radiation dose caused by public individual according to source data；According to liquid radionuclide to the year effective dose and resident's quantity caused by public individual, calculate liquid radionuclide to the Annual Collective Effective Dose caused by the public.By method and system provided by the present invention, the individual suffered by each sub-district public and collective's year Net long wave radiation dosage in the range of 80km around site of nuclear power plant liquid radioactive contamination thing emission point can be calculated, meet the needs carrying out the Annul radiation dose impact evaluation that Coastal Nuclear Power Plant during normal operation liquid emission approach produces on the public around.

Description

The Annul radiation dose computational methods of nuclear power plant's liquid radioactive substance and system

Technical field

The present invention relates to nuclear power plant's radiation environment impact evaluation technical field is and in particular to Coastal Nuclear Power Plant liquid The Annul radiation dose computational methods of state radioactivity discharge approach and system.

Background technology

In order to improve the science of nuclear radiation environment quality evaluation work, improve environmental quality it is ensured that the public Radiation safety, State Bueau of Environmental Protection issued standard GB/T 11215-89《Nuclear radiation environment quality Evaluate general provision》, the rule that the standard specifies nuclear radiation environment evaluation and the technology rule that should follow Fixed.

According to the requirement of above-mentioned national standard, caused by nuclear power station run duration need to be to discharging because of radioactive substance The dosage that in the range of 80km around power station, the public accepts is calculated and is evaluated.The present invention is precisely in order to expire Sufficient above-mentioned requirements, and the radiation dose providing a kind of nuclear power plant liquid radionuclide calculates method and is System, the method and system are according to the discharge capacity of nuclear power plant's during normal operation radioactive substance and factory site environment The parameter such as feature and public life custom and food chain, the radioactive substance using suitable factory site feature exists Transmission in surrounding water, diffusion and depositional model and public's radiation dose calculate pattern, calculate surrounding Personal effective dose suffered by each sub-district public and Collective Effective Dose in the range of 80km, and to key Resident's group, critical exposure pathway and critical nuclide carry out calculating analysis and evaluate, and carry out nuclear power plant to meet The needs that the radiation effect that during normal operation produces to the public around is evaluated.

Content of the invention

For defect present in prior art, it is an object of the invention to provide a kind of nuclear power plant liquid is put The Annul radiation dose computational methods of penetrating property material and system, by the method and system, can calculate liquid Individual suffered by each sub-district public and collective's year in the range of 80km around state radioactive contaminant emission point Net long wave radiation dosage.

For achieving the above object, the technical solution used in the present invention is as follows：

A kind of Annul radiation dose computational methods of nuclear power plant liquid radioactive substance, comprise the following steps：

(1) gather region to be evaluated to be used for calculating the year Net long wave radiation dosage of nuclear power plant's liquid radionuclide Source data；

Described source data includes annual liquid radio nuclide monitoring system data, the hydrologic monitoring in marine site that is subject to receive The mode parameter of data, region preset parameter and liquid radionuclide；Described region preset parameter includes Resident information in the effective dose conversion factor of liquid radionuclide, region to be evaluated and its life are practised Property data；The mode parameter of described liquid radionuclide includes liquid radionuclide in the seawater dilute Release the factor, the concentration factor in marine product body, by receiving the radiation related parameters in marine site and resident Marine product recipe and by receiving the movement parameter in marine site；

(2) liquid radionuclide is calculated according to described source data and treat the public individual institute in evaluation region The year Net long wave radiation dosage D causing_e, computing formula is：

D_e=D_ep+D_es+D_ew

Wherein, D_epRepresent effectively interior to the year caused by public individual due to eating the marine product being subject to receive marine site Exposure dose, D_esRepresent that liquid radionuclide is deposited on to be subject to receive marine site bank to caused by public individual Bank deposit year effective external irradiation dose, D_ewRepresent because marine site activity is personal to the public to be made being received The year effective external irradiation dose becoming；

(3) according to liquid radionuclide to the year Net long wave radiation dosage and to be evaluated caused by public individual Resident's quantity in region, calculates liquid radionuclide and treats caused by the public collective of evaluation region In year Net long wave radiation dosage D, computing formula is：

D=D_e×P

Wherein, p represents public's size of population in region to be evaluated.

Further, the Annul radiation dose computational methods of a kind of nuclear power plant liquid radioactive substance as above, In step (2), liquid radionuclide is calculated according to described source data and treats the public in evaluation region Year Net long wave radiation dosage D caused by people_eConcrete mode be：

1) region division to be evaluated is n sub-district by the range-azimuth according to site of nuclear power plant；

2) calculate liquid radionuclide to the year Net long wave radiation dosage caused by the public individual in each sub-district, Computing formula is：

D_ek=D_epk+D_esk+D_ewk

Wherein, D_ekRepresent liquid radionuclide to having in year caused by the public of k-th sub-district individual Effect radiation dose, D_epkThe public individual representing k-th sub-district is due to having in the year eaten caused by marine product Effect internal dose, D_eskRepresent that liquid radionuclide is deposited on and received marine site bank to k-th sub-district The public individual caused by bank deposit year effective external irradiation dose, D_ewkRepresent the public affairs of k-th sub-district Many individuals are by the year effective external irradiation dose received caused by the activity of marine site；

In step (3), calculate the year caused by public collective that liquid radionuclide treats evaluation region The concrete mode of Net long wave radiation dosage D is：Calculate the institute of public collective to each sub-district for the liquid radionuclide The year Net long wave radiation dosage causing, computing formula is：

D_k=D_ek×P_k

Wherein, D_kRepresent that liquid radionuclide is effective to the year caused by the public collective of k-th sub-district Radiation dose, P_kRepresent the public's size of population in k-th sub-district.

Further, the Annul radiation dose computational methods of a kind of nuclear power plant liquid radioactive substance as above, In step (2), the public individual of k-th sub-district is due to eating the year effectively interior irradiation caused by marine product Dosage D_epkThe effectively interior photograph of the year caused by various marine products eaten equal to the public individual of k-th sub-district Penetrate the sum of dosage；

The public individual of k-th sub-district eats the meter to effective internal dose of caused year for the marine product p Calculation mode is：

1. calculate the concentration of each liquid radionuclide in sea water, computing formula is：

C_wi=3.17 × 10^-8×Q_i×q^-1×C_i

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

Q_iRepresent the average annual release rate of liquid radionuclide i；

Q represents the flow of liquid approach discharge；

C_iRepresent the dilution gfactor of liquid radionuclide i in sea water；

2. calculate concentration in marine product for each liquid radionuclide, computing formula is：

C_pi=C_wi×B_pi

Wherein, C_piRepresent the concentration of liquid radionuclide i in marine product p；

B_piRepresent the concentration factor of liquid radionuclide i in marine product p；

3. the public individual calculating k-th sub-district eats the year effective internal dose caused by marine product p D_eppk, computing formula is：

Wherein, U_pRepresent the personal consumption figure to marine product p of the public of k-th sub-district；

λ_iRepresent the decay coefficient of liquid radionuclide i；

t_pRepresent marine product p from fishing for the time interval consumed；

DF_eiRepresent because eating marine product p, the liquid radionuclide i effective dose conversion personal to the public The factor.

Further, the Annul radiation dose computational methods of a kind of nuclear power plant liquid radioactive substance as above, In step (2), liquid radionuclide is deposited on personal to the public of k-th sub-district by receiving marine site bank Caused bank deposit year effective external irradiation dose D_eskComputing formula be：

C_wsiRepresent liquid radionuclide i concentration in the sea water on bank；

K_diRepresent the adsorption isothermequation of liquid radionuclide i；

W represents the bank width factor；

DS represents effective settled density；

OF represents the personal occupancy factor on bank of the public of k-th sub-district or the public individual of k-th sub-district The time quantum spent on bank in 1 year；

DF_siRepresent the liquid radionuclide i effective dose conversion factor personal to the public in bank deposit thing.

Further, the Annul radiation dose computational methods of a kind of nuclear power plant liquid radioactive substance as above, In step (2), effectively outer shone in the year received caused by the activity of marine site the public of k-th sub-district is personal Penetrate dosage D_ewkComputing formula be：

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

U_p1、U_p2Represent the personal 1 year went swimming and during water activity in sea water of the public of k-th sub-district respectively Between share；

λ_wiRepresent the decay constant of liquid radionuclide i,

t_wSpent time when representing liquid radionuclide i transfer；

DF_wiRepresent the radionuclide i effective dose conversion factor personal to the public in sea water activity.

The Annul radiation dose additionally providing a kind of nuclear power plant liquid radioactive substance in the embodiment of the present invention calculates System, including：

Source data collection subsystem, is used for calculating nuclear power plant's liquid radioactive nucleus for gathering region to be evaluated Element year Net long wave radiation dosage source data；

Described source data includes annual liquid radio nuclide monitoring system data, the hydrologic monitoring in marine site that is subject to receive The mode parameter of data, region preset parameter and liquid radionuclide；Described region preset parameter includes Resident information in the effective dose conversion factor of liquid radionuclide, region to be evaluated and its life are practised Property data；The mode parameter of described liquid radionuclide includes liquid radionuclide in the seawater dilute Release the factor, the concentration factor in marine product body, by receiving the radiation related parameters in marine site and resident Marine product recipe and by receiving the movement parameter in marine site；

Individual man-year Net long wave radiation Rapid Dose Calculation subsystem, for calculating liquid radioactivity according to described source data Nucleic treats the year Net long wave radiation dosage D caused by public individual in evaluation region_e, computing formula is：

D_e=D_ep+D_es+D_ew

Wherein, D_epRepresent effectively interior to the year caused by public individual due to eating the marine product being subject to receive marine site Exposure dose, D_esRepresent that liquid radionuclide is deposited on to be subject to receive marine site bank to caused by public individual Bank deposit year effective external irradiation dose, D_ewRepresent because marine site activity is personal to the public to be made being received The year effective external irradiation dose becoming；

Collective's year Net long wave radiation Rapid Dose Calculation subsystem, for personal to the public according to liquid radionuclide Caused year Net long wave radiation dosage and region to be evaluated in resident's quantity, calculate liquid radionuclide To the Net long wave radiation dosage D caused by public collective, computing formula is：

D=D_e×P

Wherein, p represents the public's size of population in region to be evaluated.

Further, the Annul radiation dose computing system of a kind of nuclear power plant liquid radioactive substance as above, Described man-year Net long wave radiation Rapid Dose Calculation subsystem includes：

Sub-area division module, for the range-azimuth according to site of nuclear power plant by region division to be evaluated be N sub-district；

Sub-district individual's Annul radiation dose computing module, for calculating liquid radionuclide in each sub-district Year Net long wave radiation dosage caused by public individual, computing formula is：

D_ek=D_epk+D_esk+D_ewk

Wherein, D_ekRepresent liquid radionuclide to having in year caused by the public of k-th sub-district individual Effect radiation dose, D_epkThe public individual representing k-th sub-district is due to having in the year eaten caused by marine product Effect internal dose, D_eskRepresent that liquid radionuclide is deposited on and received marine site bank to k-th sub-district The public individual caused by bank deposit year effective external irradiation dose, D_ewkRepresent the public affairs of k-th sub-district Many individuals are by the year effective external irradiation dose received caused by the activity of marine site；

Described collective year Net long wave radiation Rapid Dose Calculation subsystem includes：

Sub-district collective Annul radiation dose computing module, for calculating the public affairs to each sub-district for the liquid radionuclide Year Net long wave radiation dosage D caused by many collectives_k, computing formula is：

D_k=D_ek×P_k

Wherein, D_kRepresent that liquid radionuclide is effective to the year caused by the public collective of k-th sub-district Radiation dose, P_kRepresent the public's size of population in k-th sub-district.

Further, the Annul radiation dose computing system of a kind of nuclear power plant liquid radioactive substance as above, Described sub-district individual's Annul radiation dose computing module includes：

In sub-district, radiation dose calculates unit, for calculating the public individual of k-th sub-district due to eating sea Year caused by product effective internal dose D_epk；The public individual of k-th sub-district is due to eating marine products Year caused by product effective internal dose D_epkThe various seas eaten equal to the public individual of k-th sub-district Year caused by product effective internal dose sum；

The public of k-th sub-district personal due to eating the year effective internal dose caused by marine product p Calculation is：

1. calculate the concentration of each liquid radionuclide in sea water, computing formula is：

C_wi=3.17 × 10^-8×Q_i×q^-1×C_i

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

Q_iRepresent the average annual release rate of liquid radionuclide i；

Q represents the flow of liquid radionuclide；

C_iRepresent the dilution gfactor of liquid radionuclide i in sea water；

2. calculate concentration in marine product for each liquid radionuclide, computing formula is：

C_pi=C_wi×B_pi

Wherein, C_piRepresent the concentration of liquid radionuclide i in marine product p；

B_piRepresent the concentration factor of liquid radionuclide i in marine product p；

3. the public individual calculating k-th sub-district is due to eating the year effectively interior radiation caused by marine product p Dosage D_eppk, computing formula is：

Wherein, U_pRepresent the consumption figure of the marine product p of public individual of k-th sub-district；

λ_iRepresent the decay coefficient of liquid radionuclide i；

t_pRepresent marine product p from fishing for the time interval consumed；

DF_eiRepresent because eating marine product p, the liquid radionuclide i effective dose conversion personal to the public The factor.

Further, the Annul radiation dose computing system of a kind of nuclear power plant liquid radioactive substance as above, Described sub-district individual's Annul radiation dose computing module includes：

Sub-district bank deposit external radiation computing unit, is deposited on by Na Hai for calculating liquid radionuclide Domain bank is to the bank deposit year effective external irradiation dose D caused by the public of k-th sub-district individual_esk, Computing formula is：

Wherein, C_wsiRepresent liquid radionuclide i concentration in the sea water on bank；

K_diRepresent the adsorption isothermequation of liquid radionuclide i；

W represents the bank width factor；

DS represents effective settled density；

OF represents in the personal occupancy factor on the bank of k-th sub-district of the public or personal 1 year of the public in kth The time quantum that the bank of individual sub-district is spent；

DF_siRepresent the effective dose conversion factor of liquid radionuclide i in bank deposit thing.

Further, the Annul radiation dose computing system of a kind of nuclear power plant liquid radioactive substance as above, Described sub-district individual's Annul radiation dose computing module includes：

Sub-district activity external exposure computing unit, the public for calculating k-th sub-district is personal to be received marine site Year effective external irradiation dose D caused by activity_ewk, computing formula is：

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

U_p1、U_p2Represent that the public of k sub-district is personal respectively and be subject to receive 1 year went swimming in marine site and water activity Time quantum；

λ_wiRepresent the decay constant of liquid radionuclide i,

t_wSpent time when representing liquid radionuclide i transfer；

DF_wiRepresent the radionuclide i effective dose conversion factor personal to the public in sea water activity.

The beneficial effects of the present invention is：One kind that the present invention provides can calculate liquid radioactive contamination Individual suffered by each sub-district public and collective's year Net long wave radiation dosage in the range of 80km around thing emission point Method and system, meet and carry out the radiation effect that nuclear power plant during normal operation produces to the public around The needs evaluated, can be to liquid radioactive contamination thing to the impact caused by the Critical Gtoup in region Carry out calculating analysis and evaluate.

Brief description

A kind of Annul radiation dose computational methods of nuclear power plant liquid radioactive substance that Fig. 1 provides for the present invention Flow chart；

A kind of Annul radiation dose computing system of nuclear power plant liquid radioactive substance that Fig. 2 provides for the present invention Structured flowchart.

Specific embodiment

With reference to Figure of description, the present invention is described in further detail with specific embodiment.

Fig. 1 shows that a kind of Annul radiation dose of nuclear power plant liquid radioactive substance that the present invention provides calculates The flow chart of method, the method may comprise steps of：

Step S100：Gather region to be evaluated for calculating year effective spoke of nuclear power plant's liquid radionuclide Penetrate the related source data of dose conversion；

In present embodiment, during described region to be evaluated refers to nuclear power station radioactive contaminant emission point be The heart, draws the covered region of circle with 80KM by radius, that is, specified in standard GB/T 11215-89 Need to carry out the area that the year Net long wave radiation dosage that radioactive substance release causes is calculated and evaluated to the public Domain scope.

Described source data includes the annual liquid radio nuclide monitoring system data of nuclear power plant, the water in marine site that is subject to receive The mode parameter of civilian Monitoring Data, region preset parameter and liquid radionuclide；The fixing ginseng in described region Number include the effective dose conversion factors of liquid radionuclide, the resident information in region to be evaluated and its Life habit data；The mode parameter of described liquid radionuclide includes liquid radionuclide in sea water In dilution gfactor, the concentration factor in marine product body, by receive marine site radiation related parameters (because Eat marine product, liquid radionuclide to the personal effective dose conversion factor of the public, marine site bank of being received In the deposit of side, the liquid radionuclide effective dose conversion factor personal to the public, resident are by Na Hai Liquid radionuclide effective dose conversion factor personal to the public the etc. during activity of domain) and resident sea Product recipe (consumption figure of personal marine product, marine product from fish for time interval consumed etc.) and By receiving the movement parameter (by receiving 1 year went swimming and the share of water activity time in marine site) in marine site.

Wherein, described liquid radio nuclide monitoring system data is source item, and nuclear power station is discharged into the liquid in environment The quantity of state radioactive contaminant and composition；Described included being received marine site by receiving the hydrologic monitoring data in marine site Area, distance of receiving water body zones of different and site of nuclear power plant floss hole etc.；Described resident and its life Habit data of living includes quantity, age, occupation, life habit and recipe of resident etc..

In present embodiment, liquid radionuclide produces to people in dilution and diffusion process in storage waters Raw radiation approach mainly considers following several：

Eat by by receiving the interior irradiation that the seawater living (being referred to as marine product) that marine site grows causes；

It is deposited on the bank deposit external exposure that the radioactive substance on bank causes；

By receiving marine site went swimming, the external exposure rowed the boat and be subject to when being engaged in operation at sea.

General, the liquid radionuclide of nuclear power plant is to be discharged in marine site with recirculated cooling water, that is, be subject to Receiving marine site is sea water, because sea water cannot function as agricultural irrigation and people and animals drink, therefore calculates in radiation dose In to drinking water and the food chain exposure pathways that caused with alpha-contamination water Irrigation farming and animal husbandry not Give consideration.

Step S200：Liquid radionuclide is calculated to the year caused by public individual according to described source data Net long wave radiation dosage；

In present embodiment, the year Net long wave radiation dosage caused by the described individual to the public is included due to eating By receive marine site marine product to the public individual caused by year effectively interior radiation dose, liquid radionuclide It is deposited on bank to the bank deposit year effective external radiation dosage caused by public individual, due to by Na Hai Domain activity is to the year effective external radiation dosage caused by public individual.Liquid radionuclide is personal to the public Caused year Net long wave radiation dosage is equal to each radionuclide to above-mentioned 3 year caused by public individual The summation of Net long wave radiation dosage.

I.e. liquid radionuclide treats the year Net long wave radiation dosage caused by public individual in evaluation region D_eComputing formula be：

D_e=D_ep+D_es+D_ew

Wherein, D_epRepresent effectively interior to the year caused by public individual due to eating the marine product being subject to receive marine site Radiation dose, D_esRepresent that liquid radionuclide is deposited on to be subject to receive marine site bank to caused by public individual Bank deposit year effective external radiation dosage, D_ewRepresent because marine site activity is personal to the public to be made being received The year effective external radiation dosage becoming.

In practice, when nuclear power plant normally runs, liquid radionuclide enters marine site, in sea water trend Under effect, this part low level waste water is also diluted further, is calculating effective spoke that liquid approach leads to When penetrating dosage, from site of nuclear power plant apart from different be also not by receiving each radiation parameter of subregion in marine site With, therefore, in order to preferably evaluate liquid radionuclide to site of nuclear power plant radius 80km scope Interior liquid radionuclide, can be to factory site half in the different Net long wave radiation dosage being subject to and receiving caused by the sub-district of marine site Being carried out sub-district and divided by receiving marine site of region in the range of the 80km of footpath, calculates each liquid in each sub-district respectively State radionuclide is personal to the public or collective caused by year Net long wave radiation dosage so that result of calculation is more Close to practical situation.

In present embodiment, to by receive marine site carry out subregion calculate liquid radionuclide caused by having in year The mode of effect radiation dose comprises the following steps：

1) n sub-district is divided into according to the range-azimuth of site of nuclear power plant；And will be received marine site according to away from The distance of chaotropic state radioactivity discharge mouth divides marine site, can be divided into coastal waters domain and off-lying sea domain；

2) calculate liquid radionuclide to the year Net long wave radiation dosage caused by the public individual in each sub-district, Computing formula is：

D_ek=D_epk+D_esk+D_ewk

Wherein, D_ekRepresent liquid radionuclide to having in year caused by the public of k-th sub-district individual Effect radiation dose, D_epkThe public individual representing k-th sub-district is due to having in the year eaten caused by marine product Effect internal dose, D_eskRepresent that liquid radionuclide is deposited on and received marine site bank to k-th sub-district The public individual caused by bank deposit year effective external irradiation dose, D_ewkRepresent the public affairs of k-th sub-district Many individuals are by the year effective external irradiation dose received caused by the activity of marine site.

Below to above-mentioned three radiation dose D_epk、D_esk、D_ewkCalculation illustrate respectively.

The public of (1) k-th sub-district personal due to eat marine product to the year caused effective internal dose D_epkThe effectively interior irradiation agent of the year caused by various marine products eaten equal to the public individual of k-th sub-district The sum of amount；

The public individual of k-th sub-district eats the meter to effective internal dose of caused year for the marine product p Calculation mode is：

1. calculate the concentration of each liquid radionuclide in sea water, computing formula is：

C_wi=3.17 × 10^-8×Q_i×q^-1×C_i

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water, unit Bq/m³；

Q_iRepresent the average annual release rate of liquid radionuclide i, unit Bq/a；

Q represents the flow of liquid approach discharge, unit m³/s；

C_iRepresent the dilution gfactor of liquid radionuclide i in sea water, dimensionless；

3.17×10^-8Conversion coefficient for a/s；

2. calculate concentration in marine product for each liquid radionuclide, computing formula is：

C_pi=C_wi×B_pi

Wherein, C_piRepresent the concentration of liquid radionuclide i in marine product p, unit Bq/kg；

B_piRepresent the concentration factor of liquid radionuclide i in marine product p, unit m³/kg；

3. the public individual calculating k-th sub-district eats the year effective internal dose caused by marine product p D_eppk, computing formula is：

Wherein, U_pRepresent the personal consumption figure to marine product p of the public of k-th sub-district, units/kg/a；

λ_iRepresent the decay coefficient of liquid radionuclide i, unit h^-1；

t_pRepresent marine product p from fishing for the time interval consumed, unit h；

DF_eiRepresent because eating marine product p, the liquid radionuclide i effective dose conversion personal to the public The factor, unit Sv/Bq.

The marine product that in the range of the radius 80km of in present embodiment it is assumed that factory site, resident eats all is from The factory site marine site in several kilometers nearby, radionuclide by the dilution gfactor received in the sea water of marine site according to The difference of site of nuclear power plant distance, dilution gfactor C_iIt is also different.Dilution gfactor is retrieved from Chinese Water Conservancy Water power research institute completes in May, 2009《Nuclear power plant's the second stage of the project warm water discharge and low level waste water are comprehensive Analysis and research report》Middle digital-to-analogue and the result of Logistics automatic system, marine site in the range of the floss hole 5km of factory site The dilution gfactor of radionuclide is that the dilution gfactor of marine site radionuclide in the range of 0.07,5-20km is In the range of 0.03,20-80km, the dilution gfactor of marine site radionuclide is 0.001.In Practical Calculation, Above-mentioned liquid radionuclide i is by dilution gfactor C received in the sea water of marine site_iReality in conjunction with region to be evaluated The result of border situation and above-mentioned experiment carries out value.

In present embodiment, in order to more easily describe, Illustrate the Net long wave radiation agent that in the marine product p that public individual is eaten, all liquid radionuclides cause The sum of amount,In i be also represented by the number of species of liquid radionuclide, that is,

Wherein, m is radionuclide number of species.

In Practical Calculation, due to the radionuclide apart from different marine sites from radionuclide floss hole Concentration be different, in order that result of calculation more tallies with the actual situation, in the public of k-th sub-district People eats the year effective internal dose D caused by marine product p_eppkWhen, this sub-district can be calculated respectively Year Net long wave radiation dosage and remote due to eating caused by the personal marine product p due to eating coastal waters domain of the public The year Net long wave radiation dosage caused by marine product p in marine site, now, described year effective internal dose Computing formula can be write as：

C_{Pi is near}=C_{Wi is near}×B_pi

C_{Pi is remote}=C_{Wi is remote}×B_pi

Accordingly, in formula, C_{Pi is near}And C_{Pi is remote}It is illustrated respectively in coastal waters domain and the marine product p in off-lying sea domain The concentration of liquid radionuclide i, C_{Wi is near}And C_{Wi is remote}Represent in the sea water of coastal waters domain respectively and off-lying sea domain sea water The concentration of middle liquid radionuclide i, U_{P is near}And U_{P is remote}Represent that the public individual of k-th sub-district is right respectively The consumption figure of the marine product p in coastal waters domain and off-lying sea domain, t_{P is near}And t_{P is remote}Represent coastal waters domain and off-lying sea domain respectively Marine product p is from fishing for the time interval consumed.

(2) liquid radionuclide is deposited on and by receiving marine site bank, the public of k-th sub-district individual is made The bank deposit year effective external irradiation dose D becoming_eskComputing formula be：

Wherein, D_eskRepresent the liquid radioactivity caused by the personal activity on bank of the public of k-th sub-district The effective external irradiation dose of nucleic bank deposit, unit Sv/a；

C_wsiRepresent liquid radionuclide i concentration in the sea water on bank, unit Bq/m³；

K_diRepresent the adsorption isothermequation of liquid radionuclide i, unit m³/kg；

W represents the bank width factor, dimensionless；

DS represents effective settled density, units/kg/；

OF represents the personal occupancy factor on bank of the public of k-th sub-district or the public individual of k-th sub-district The time quantum spent on bank in 1 year, dimensionless；

DF_siRepresent the radionuclide i of liquid emission approach in the bank deposit thing effective dose personal to the public Conversion factor, unit (Sv m³)/(Bq·a).

General, nuclear power plant's affiliated marine site depth of water is shallower, gentle gradient, and seabed is essentially fine sand or mud. Need to consider bank deposit thing to the Net long wave radiation dosage caused by public individual.Radionuclide is in float Chinese Radiation Protection Research Inst can be taken from the partition coefficient in precipitate and Zhejiang Water estuary coast grinds Study carefully what institute completed in 2011《Silt adsorbs to radionuclide, goes attached, deposition and settling flux experiment to grind Study carefully and comprehensive analysis》The Co-60 being given, tetra- kinds of radionuclides of Cs-137, Cs-134, Sr-90 are outstanding Adsorption isothermequation in float and deposit, calculates bank deposit external exposure, is not given in experiment Nucleic adsorption isothermequation, take the recommendation in nuclear safety technological document HAF-J0001.Certainly, Can also be according to the actual data cases obtaining, using the adsorption isothermequation setting.

The public individual of (3) k-th sub-district is due to by the year effective external exposure received caused by the activity of marine site Dosage D_ewkComputing formula be：

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water, unit Bq/m；

U_p1、U_p2Represent public's individual's 1 year went swimming and water activity in sea water of k sub-district respectively Time quantum, dimensionless；

λ_wiRepresent the decay constant of liquid radionuclide i, unit h^-1；

t_wSpent time when representing liquid radionuclide i transfer, unit h；

DF_wiRepresent the radionuclide i effective dose conversion factor unit personal to the public in sea water activity (Sv·m³)/(Bq·a).

Likewise, in Practical Calculation, calculate k-th sub-district the public personal due to be received marine site movable Effective external irradiation dose D of caused year_ewkWhen can calculate respectively coastal waters domain and off-lying sea domain activity made The year effective external irradiation dose becoming, corresponding C_wiC can be taken respectively_{Wi is near}And C_{Wi is remote}.

Step S300：According to liquid radionuclide to the public individual caused by year Net long wave radiation dosage and Resident's quantity in region to be evaluated, calculates liquid radionuclide effective to the year caused by public collective Radiation dose.

Complete liquid radionuclide to the year caused by public individual after Net long wave radiation dosage, just permissible Liquid radionuclide is calculated to the year caused by public collective according to the resident's quantity in region to be evaluated Net long wave radiation dosage, is equal to described artificial to the public to the year Net long wave radiation dosage caused by public collective Become year Net long wave radiation dosage with the product of resident's quantity, that is, liquid radionuclide public collective is made The year Net long wave radiation dosage D=D becoming_e×P；Wherein, p represents area to be evaluated in interior public's size of population.

Carry out after sub-district divides treating evaluation region, liquid radionuclide is to the year caused by public collective The concrete mode of Net long wave radiation dosage D is：Calculate the institute of public collective to each sub-district for the liquid radionuclide The year Net long wave radiation dosage causing, computing formula is：

D_k=D_ek×P_k

Wherein, D_kRepresent that liquid radionuclide is effective to the year caused by the public collective of k-th sub-district Radiation dose, P_kRepresent the public's size of population in k-th sub-district.

Now, liquid radionuclide is to the year effective spoke caused by the public collective in entirely region to be evaluated Penetrating dosage is：

It should be noted that in present embodiment, liquid radionuclide is to the year caused by public individual Net long wave radiation dosage and annual Net long wave radiation agent is each meant to the year Net long wave radiation dosage caused by public collective Amount.Method of the present invention be applied under nuclear power plant's nominal situation year Net long wave radiation dosage assessment with Calculate, such as the radionuclide with the discharge of liquid approach of Coastal Nuclear Power Plant is to factory site radius 80km scope Individual man-year Net long wave radiation dosage caused by the interior public and collective's year Net long wave radiation dosage.

After the calculating completing above-mentioned each year Net long wave radiation dosage, can be by result of calculation and calculating process In the intermediate quantity that calculates be depicted as chart, for example, the nuclide concentration contour on GIS can be drawn, have Effect radiation dose isogram etc., can intuitively show the effective dose suffered by each sub-district public individual, Each nucleic is to the effective dose caused by each sub-district public individual, key point (selecting as needed) place Effective dose that public individual is caused by each nucleic and various exposure pathways etc.；Liquid can also be selected Some nucleic in radionuclide or the Net long wave radiation dosage caused by all nucleic or other parameters, paint The chart of system can be used directly to write nuclear power plant's dose evaluation report.

Corresponding with the method shown in Fig. 1, additionally provide a kind of nuclear power plant liquid radioactivity in the present invention The radiation dose of material calculates system, as shown in Fig. 2 this system mainly includes Source Data Acquisition subsystem 100th, individual man-year Net long wave radiation Rapid Dose Calculation subsystem 200 and collective's year Net long wave radiation Rapid Dose Calculation subsystem 300.

Source Data Acquisition subsystem 100, is used for calculating nuclear power plant's liquid radiation for gathering region to be evaluated Property nucleic the related source data of year Net long wave radiation dose conversion；

Described source data includes the annual liquid radio nuclide monitoring system data of nuclear power plant, the water in marine site that is subject to receive The mode parameter of civilian Monitoring Data, region preset parameter and liquid radionuclide；The fixing ginseng in described region Number include the effective dose conversion factors of liquid radionuclide, the resident information in region to be evaluated and its Life habit data；The mode parameter of described liquid radionuclide includes liquid radionuclide in sea water In dilution gfactor, the concentration factor in marine product body, by receive marine site radiation related parameters, with And resident marine product recipe and by receiving the movement parameter in marine site；

Individual man-year Net long wave radiation Rapid Dose Calculation subsystem 200, puts for calculating liquid according to described source data Penetrating property nucleic treats the year Net long wave radiation dosage D caused by public individual in evaluation region_e, computing formula For：

D_e=D_ep+D_es+D_ew

Wherein, D_epRepresent effectively interior to the year caused by public individual due to eating the marine product being subject to receive marine site Exposure dose, D_esRepresent that liquid radionuclide is deposited on to be subject to receive marine site bank to caused by public individual Bank deposit year effective external irradiation dose, D_ewRepresent because marine site activity is personal to the public to be made being received The year effective external irradiation dose becoming；

Collective's year Net long wave radiation Rapid Dose Calculation subsystem 300, for according to liquid radionuclide to the public Individual caused by year Net long wave radiation dosage and region to be evaluated in resident's quantity, calculate liquid radioactivity Nucleic to the year Net long wave radiation dosage D caused by public collective, computing formula is：

D=D_e×P

Wherein, p represents the public's size of population in region to be evaluated.

In present embodiment, described man-year Net long wave radiation Rapid Dose Calculation subsystem 200 can also include：

Region to be evaluated is drawn by sub-area division module 201 for the range-azimuth according to site of nuclear power plant It is divided into n sub-district；And by by receive marine site according to apart from liquid hot drain mouth apart from zoning；

Sub-district individual's Annul radiation dose computing module 202, for calculating liquid radionuclide to each sub-district Year Net long wave radiation dosage caused by interior public individual, computing formula is：

D_ek=D_epk+D_esk+D_ewk

Wherein, D_ekRepresent liquid radionuclide to having in year caused by the public of k-th sub-district individual Effect radiation dose, D_epkThe public individual representing k-th sub-district is due to having in the year eaten caused by marine product Effect internal dose, D_eskRepresent that liquid radionuclide is deposited on and received marine site bank to k-th sub-district The public individual caused by bank deposit year effective external irradiation dose, D_ewkRepresent the public affairs of k-th sub-district Many individuals are by the year effective external irradiation dose received caused by the activity of marine site；

Now, described collective year Net long wave radiation Rapid Dose Calculation subsystem 300 includes sub-district collective year radiation agent Amount computing module 301.

Sub-district collective Annul radiation dose computing module 301, for calculating liquid radionuclide to each sub-district The year Net long wave radiation dosage D caused by public collective_k, computing formula is：

D_k=D_ek×P_k

Wherein, D_kRepresent that liquid radionuclide is effective to the year caused by the public collective of k-th sub-district Radiation dose, P_kRepresent the public's size of population in k-th sub-district.

In present embodiment, sub-district individual's Annul radiation dose computing module 202 includes sub-district Annul radiation dose Computing unit, sub-district bank deposit external radiation computing unit and sub-district activity external radiation computing unit.

In sub-district, radiation dose calculates unit, for calculating the public individual of k-th sub-district due to eating sea Year caused by product effective internal dose D_epk；The public individual of k-th sub-district is due to eating marine products Year caused by product effective internal dose D_epkThe various seas eaten equal to the public individual of k-th sub-district Year caused by product effective internal dose sum；

The public of k-th sub-district personal due to eating the year effective internal dose caused by marine product p Calculation is：

1. calculate the concentration of each liquid radionuclide in sea water, computing formula is：

C_wi=3.17 × 10^-8×Q_i×q^-1×C_i

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

Q_iRepresent the average annual release rate of liquid radionuclide i；

Q represents the flow of liquid radionuclide；

C_iRepresent the dilution gfactor of liquid radionuclide i in sea water；

2. calculate concentration in marine product for each liquid radionuclide, computing formula is：

C_pi=C_wi×B_pi

Wherein, C_piRepresent the concentration of liquid radionuclide i in marine product p；

B_piRepresent the concentration factor of liquid radionuclide i in marine product p；

3. the public individual calculating k-th sub-district is due to eating the year effectively interior radiation caused by marine product p Dosage D_eppk, computing formula is：

Wherein, U_pRepresent the consumption figure of the marine product p of public individual of k-th sub-district；

λ_iRepresent the decay coefficient of liquid radionuclide i；

t_pRepresent marine product p from fishing for the time interval consumed；

DF_eiRepresent because eating marine product p, the liquid radionuclide i effective dose conversion personal to the public The factor.

Sub-district bank deposit external radiation computing unit, is deposited on by Na Hai for calculating liquid radionuclide Domain bank is to the bank deposit year effective external irradiation dose D caused by the public of k-th sub-district individual_esk, Computing formula is：

Wherein, C_wsiRepresent liquid radionuclide i concentration in the sea water on bank；

K_diRepresent the adsorption isothermequation of liquid radionuclide i；

W represents the bank width factor；

DS represents effective settled density；

OF represents in the personal occupancy factor on the bank of k-th sub-district of the public or personal 1 year of the public in kth The time quantum that the bank of individual sub-district is spent；

DF_siRepresent the effective dose conversion factor of liquid radionuclide i in bank deposit thing.

Sub-district activity external exposure computing unit, the public for calculating k-th sub-district is personal to be received marine site Year effective external irradiation dose D caused by activity_ewk, computing formula is：

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

U_p1、U_p2Represent that the public of k sub-district is personal respectively and be subject to receive 1 year went swimming in marine site and water activity Time quantum；

λ_wiRepresent the decay constant of liquid radionuclide i,

t_wSpent time when representing liquid radionuclide i transfer；

DF_wiRepresent the radionuclide i effective dose conversion factor personal to the public in sea water activity.

Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention The spirit and scope of invention.So, if these modifications of the present invention and modification belong to right of the present invention and want Ask and its equivalent technology within the scope of, then the present invention is also intended to comprise these and changes and modification.

Claims (10)

1. a kind of Annul radiation dose computational methods of nuclear power plant liquid radioactive substance, comprise the following steps：

(1) gather region to be evaluated to be used for calculating the year Net long wave radiation dosage of nuclear power plant's liquid radionuclide Source data；

Described source data includes annual liquid radio nuclide monitoring system data, the hydrologic monitoring in marine site that is subject to receive The mode parameter of data, region preset parameter and liquid radionuclide；Described region preset parameter includes Resident information in the effective dose conversion factor of liquid radionuclide, region to be evaluated and its life are practised Property data；The mode parameter of described liquid radionuclide includes liquid radionuclide in the seawater dilute Release the factor, the concentration factor in marine product body, by receiving the radiation related parameters in marine site and resident Marine product recipe and by receiving the movement parameter in marine site；

(2) liquid radionuclide is calculated according to described source data and treat the public individual institute in evaluation region The year Net long wave radiation dosage D causing_e, computing formula is：

D_e=D_ep+D_es+D_ew

Wherein, D_epRepresent effectively interior to the year caused by public individual due to eating the marine product being subject to receive marine site Exposure dose, D_esRepresent that liquid radionuclide is deposited on to be subject to receive marine site bank to caused by public individual Bank deposit year effective external irradiation dose, D_ewRepresent because marine site activity is personal to the public to be made being received The year effective external irradiation dose becoming；

(3) according to liquid radionuclide to the year Net long wave radiation dosage and to be evaluated caused by public individual Resident's quantity in region, calculates liquid radionuclide and treats caused by the public collective of evaluation region In year Net long wave radiation dosage D, computing formula is：

D=D_e×P

Wherein, p represents public's size of population in region to be evaluated.

2. a kind of Annul radiation dose of nuclear power plant according to claim 1 liquid radioactive substance calculates Method it is characterised in that：In step (2), liquid radionuclide is calculated according to described source data and treats The year Net long wave radiation dosage D caused by public individual in evaluation region_eConcrete mode be：

1) region division to be evaluated is n sub-district by the range-azimuth according to site of nuclear power plant；

2) calculate liquid radionuclide to the year Net long wave radiation dosage caused by the public individual in each sub-district, Computing formula is：

D_ek=D_epk+D_esk+D_ewk

Wherein, D_ekRepresent liquid radionuclide to having in year caused by the public of k-th sub-district individual Effect radiation dose, D_epkThe public individual representing k-th sub-district is due to having in the year eaten caused by marine product Effect internal dose, D_eskRepresent that liquid radionuclide is deposited on and received marine site bank to k-th sub-district The public individual caused by bank deposit year effective external irradiation dose, D_ewkRepresent the public affairs of k-th sub-district Many individuals are by the year effective external irradiation dose received caused by the activity of marine site；

In step (3), calculate the year caused by public collective that liquid radionuclide treats evaluation region The concrete mode of Net long wave radiation dosage D is：Calculate the institute of public collective to each sub-district for the liquid radionuclide The year Net long wave radiation dosage causing, computing formula is：

D_k=D_ek×P_k

Wherein, D_kRepresent that liquid radionuclide is effective to the year caused by the public collective of k-th sub-district Radiation dose, P_kRepresent the public's size of population in k-th sub-district.

3. a kind of Annul radiation dose of nuclear power plant according to claim 2 liquid radioactive substance calculates Method it is characterised in that：In step (2), the public individual of k-th sub-district is by eating marine product institute The year effective internal dose D causing_epkThe various marine products eaten equal to the public individual of k-th sub-district Caused year effective internal dose sum；

The public individual of k-th sub-district eats the meter to effective internal dose of caused year for the marine product p Calculation mode is：

1. calculate the concentration of each liquid radionuclide in sea water, computing formula is：

C_wi=3.17 × 10^-8×Q_i×q^-1×C_i

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

Q_iRepresent the average annual release rate of liquid radionuclide i；

Q represents the flow of liquid approach discharge；

C_iRepresent the dilution gfactor of liquid radionuclide i in sea water；

2. calculate concentration in marine product for each liquid radionuclide, computing formula is：

C_pi=C_wi×B_pi

Wherein, C_piRepresent the concentration of liquid radionuclide i in marine product p；

B_piRepresent the concentration factor of liquid radionuclide i in marine product p；

3. the public individual calculating k-th sub-district eats the year effective internal dose caused by marine product p D_eppk, computing formula is：

$D_{eppk}=\underset{i}{\Σ}{C}_{pi}\×U_p\×\exp (-{\mathrm{\λ}}_i\×t_p)\×{\mathrm{DF}}_{ei}$

Wherein, U_pRepresent the personal consumption figure to marine product p of the public of k-th sub-district；

λ_iRepresent the decay coefficient of liquid radionuclide i；

t_pRepresent marine product p from fishing for the time interval consumed；

DF_eiRepresent because eating marine product p, the liquid radionuclide i effective dose conversion personal to the public The factor.

4. a kind of Annul radiation dose of nuclear power plant according to claim 1 liquid radioactive substance calculates Method it is characterised in that：In step (2), liquid radionuclide is deposited on is received marine site bank to Bank deposit year effective external irradiation dose D caused by public individual of k sub-district_eskComputing formula be：

$D_{esk}=\underset{i}{\Σ}{C}_{wsi}\×K_{di}\×W\×DS\×OF\×{\mathrm{DF}}_{si}$

C_wsiRepresent liquid radionuclide i concentration in the sea water on bank；

K_diRepresent the adsorption isothermequation of liquid radionuclide i；

W represents the bank width factor；

DS represents effective settled density；

OF represents the personal occupancy factor on bank of the public of k-th sub-district or the public individual of k-th sub-district The time quantum spent on bank in 1 year；

DF_siRepresent the liquid radionuclide i effective dose conversion factor personal to the public in bank deposit thing.

5. a kind of Annul radiation dose of nuclear power plant according to claim 1 liquid radioactive substance calculates Method it is characterised in that：In step (2), the public of k-th sub-district personal to be received marine site movable Effective external irradiation dose D of caused year_ewkComputing formula be：

$D_{ewk}=\underset{i}{\Σ}{C}_{wi}\×(U_{p1}+U_{p2}/2)\×\[\exp (-{\mathrm{\λ}}_{wi}\×t_w)\]\×{\mathrm{DF}}_{wi}$

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

U_p1、U_p2Represent the personal 1 year went swimming and during water activity in sea water of the public of k-th sub-district respectively Between share；

λ_wiRepresent the decay constant of liquid radionuclide i,

t_wSpent time when representing liquid radionuclide i transfer；

DF_wiRepresent the radionuclide i effective dose conversion factor personal to the public in sea water activity.

6. the Annul radiation dose computing system of a kind of nuclear power plant liquid radioactive substance, including：

Source data collection subsystem, is used for calculating nuclear power plant's liquid radioactive nucleus for gathering region to be evaluated Element year Net long wave radiation dosage source data；

Described source data includes annual liquid radio nuclide monitoring system data, the hydrologic monitoring in marine site that is subject to receive The mode parameter of data, region preset parameter and liquid radionuclide；Described region preset parameter includes Resident information in the effective dose conversion factor of liquid radionuclide, region to be evaluated and its life are practised Property data；The mode parameter of described liquid radionuclide includes liquid radionuclide in the seawater dilute Release the factor, the concentration factor in marine product body, by receiving the radiation related parameters in marine site and resident Marine product recipe and by receiving the movement parameter in marine site；

Individual man-year Net long wave radiation Rapid Dose Calculation subsystem, for calculating liquid radioactivity according to described source data Nucleic treats the year Net long wave radiation dosage D caused by public individual in evaluation region_e, computing formula is：

D_e=D_ep+D_es+D_ew

Wherein, D_epRepresent effectively interior to the year caused by public individual due to eating the marine product being subject to receive marine site Exposure dose, D_esRepresent that liquid radionuclide is deposited on to be subject to receive marine site bank to caused by public individual Bank deposit year effective external irradiation dose, D_ewRepresent because marine site activity is personal to the public to be made being received The year effective external irradiation dose becoming；

Collective's year Net long wave radiation Rapid Dose Calculation subsystem, for personal to the public according to liquid radionuclide Caused year Net long wave radiation dosage and region to be evaluated in resident's quantity, calculate liquid radionuclide To the Net long wave radiation dosage D caused by public collective, computing formula is：

D=D_e×P

Wherein, p represents the public's size of population in region to be evaluated.

7. a kind of Annul radiation dose of nuclear power plant according to claim 6 liquid radioactive substance calculates System it is characterised in that：Described man-year Net long wave radiation Rapid Dose Calculation subsystem includes：

Sub-area division module, for the range-azimuth according to site of nuclear power plant by region division to be evaluated be N sub-district；

Sub-district individual's Annul radiation dose computing module, for calculating liquid radionuclide in each sub-district Year Net long wave radiation dosage caused by public individual, computing formula is：

D_ek=D_epk+D_esk+D_ewk

Wherein, D_ekRepresent liquid radionuclide to having in year caused by the public of k-th sub-district individual Effect radiation dose, D_epkThe public individual representing k-th sub-district is due to having in the year eaten caused by marine product Effect internal dose, D_eskRepresent that liquid radionuclide is deposited on and received marine site bank to k-th sub-district The public individual caused by bank deposit year effective external irradiation dose, D_ewkRepresent the public affairs of k-th sub-district Many individuals are by the year effective external irradiation dose received caused by the activity of marine site；

Described collective year Net long wave radiation Rapid Dose Calculation subsystem includes：

Sub-district collective Annul radiation dose computing module, for calculating the public affairs to each sub-district for the liquid radionuclide Year Net long wave radiation dosage caused by many collectives, computing formula is：

D_k=D_ek×P_k

Wherein, D_kRepresent that liquid radionuclide is effective to the year caused by the public collective of k-th sub-district Radiation dose, P_kRepresent the public's size of population in k-th sub-district.

8. a kind of Annul radiation dose of nuclear power plant according to claim 7 liquid radioactive substance calculates System it is characterised in that：Described sub-district individual's Annul radiation dose computing module includes：

In sub-district, radiation dose calculates unit, for calculating the public individual of k-th sub-district due to eating sea Year caused by product effective internal dose D_epk；The public individual of k-th sub-district is due to eating marine products Year caused by product effective internal dose D_epkThe various seas eaten equal to the public individual of k-th sub-district Year caused by product effective internal dose sum；

The public of k-th sub-district personal due to eating the year effective internal dose caused by marine product p Calculation is：

1. calculate the concentration of each liquid radionuclide in sea water, computing formula is：

C_wi=3.17 × 10^-8×Q_i×q^-1×C_i

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

Q_iRepresent the average annual release rate of liquid radionuclide i；

Q represents the flow of liquid radionuclide；

C_iRepresent the dilution gfactor of liquid radionuclide i in sea water；

2. calculate concentration in marine product for each liquid radionuclide, computing formula is：

C_pi=C_wi×B_pi

Wherein, C_piRepresent the concentration of liquid radionuclide i in marine product p；

B_piRepresent the concentration factor of liquid radionuclide i in marine product p；

3. the public individual calculating k-th sub-district is due to eating the year effectively interior radiation caused by marine product p Dosage D_eppk, computing formula is：

$D_{eppk}=\underset{i}{\Σ}{C}_{pi}\×U_p\×\exp (-{\mathrm{\λ}}_i\×t_p)\×{\mathrm{DF}}_{ei}$

Wherein, U_pRepresent the consumption figure of the marine product p of public individual of k-th sub-district；

λ_iRepresent the decay coefficient of liquid radionuclide i；

t_pRepresent marine product p from fishing for the time interval consumed；

DF_eiRepresent because eating marine product p, the liquid radionuclide i effective dose conversion personal to the public The factor.

9. a kind of Annul radiation dose of nuclear power plant according to claim 7 liquid radioactive substance calculates System it is characterised in that：Described sub-district individual's Annul radiation dose computing module includes：

Sub-district bank deposit external radiation computing unit, is deposited on by Na Hai for calculating liquid radionuclide Domain bank is to the bank deposit year effective external irradiation dose D caused by the public of k-th sub-district individual_esk, Computing formula is：

$D_{esk}=\underset{i}{\Σ}{C}_{wsi}\×K_{di}\×W\×DS\×OF\×{\mathrm{DF}}_{si}$

Wherein, C_wsiRepresent liquid radionuclide i concentration in the sea water on bank；

K_diRepresent the adsorption isothermequation of liquid radionuclide i；

W represents the bank width factor；

DS represents effective settled density；

OF represents in the personal occupancy factor on the bank of k-th sub-district of the public or personal 1 year of the public in kth The time quantum that the bank of individual sub-district is spent；

DF_siRepresent the effective dose conversion factor of liquid radionuclide i in bank deposit thing.

10. the Annul radiation dose meter of a kind of nuclear power plant according to claim 7 liquid radioactive substance Calculation system it is characterised in that：Described sub-district individual's Annul radiation dose computing module includes：

Sub-district activity external exposure computing unit, the public for calculating k-th sub-district is personal to be received marine site Year effective external irradiation dose D caused by activity_ewk, computing formula is：

$D_{ewk}=\underset{i}{\Σ}{C}_{wi}\×(U_{p1}+U_{p2}/2)\×\[\exp (-{\mathrm{\λ}}_{wi}\×t_w)\]\×{\mathrm{DF}}_{wi}$

Wherein, C_wiRepresent the concentration of liquid radionuclide i in sea water；

U_p1、U_p2Represent that the public of k sub-district is personal respectively and be subject to receive 1 year went swimming in marine site and water activity Time quantum；

λ_wiRepresent the decay constant of liquid radionuclide i,

t_wSpent time when representing liquid radionuclide i transfer；

DF_wiRepresent the radionuclide i effective dose conversion factor personal to the public in sea water activity.