User Guide for the Dose Combination Module DCM of RODOS-

Transcription

1 User Guide for the Dose Combination Module DCM of RODOS- PV4.0F_02 Florian Gering, Stephan Hübner, Heinz Müller Contents USER GUIDE FOR THE DOSE COMBINATION MODULE DCM OF RODOS- PV4.0F_ Overview Input Data Output data 5 2 Starting the DCM module Before the run Starting the Dose Combination Module DCM Archived runs 10 3 Initialization Windows for DCM Overview Description Graphical output type Population group Integration time 17 4 Results and Data Output Possible results Doses for average population Doses for special population groups Presentation of results Default output 21 5 Error Correction Procedures 22 Document History

2 1 Overview The final version of the User Guide will be part of the overall RODOS User Guide for version 4.0F_02. The task of the Dose Combination Module DCM in the RODOS system is to combine selected dose results from the four food chain and dose modules the food and dose module for terrestrial pathways FDMT, the food and dose module for aquatic pathways FDMA 1, the food and dose module for forest pathways FDMF, the food and dose module for tritium pathways FDMH. It gives an overview of the contributions of these four different exposure pathways to different dose sums (different due to integration time, population group and internal/external exposure pathways). Input to DCM is from all of these four modules (see Figure 1). Before starting DCM, a consistent set of runs of these modules has to be available. The DCM-run must be configured for all four modules. 1 In the current RODOS-version FDMA is not yet implemented; however it is mentioned in the following descriptions

3 ADM Atmospheric Dispersion Module Hydrologic al Module FDMT FDMA FDMF FDMH Terrestrial Food Chain Module Terrestrial Dose Module Aquatic Food Chain Module Aquatic Dose Module Forest Food Chain and Dose Module Tritium Food Chain and Dose Module Dose Combination Module Countermeasure Subsystem CSY Figure 1: Data flow of the Food and Dose Modules. The following table refers to the ingestion pathway, which is treated in all four modules. It shows which group of food products and which contamination pathway is considered in the four dose modules. Contamination by Food products aerosol bound nuclides, iodine tritium agricultural products (e.g. cereals, vegetables, milk, meat) drinking water, fish forest products (game meat, berries, mushrooms) n.c.: not considered in RODOS FDMT (deposition from atmosphere) FDMA FDMA (feeding water, irrigation) FDMF (deposition from atmosphere) FDMH (deposition from atmosphere) Table 1: The ingestion pathway in the Food and Dose Modules n.c. n.c

4 The results of DCM can be displayed to the user via the graphics system. A detailed description of the DCM module is given in the Documentation of the Dose Module DCM in RODOS PV 4.0 (RODOS(WG3)-TN(99)11). 1.1 Input Data All four modules (FDMT, FDMA, FDMF, and FDMH) provide ingestion doses, some of them also inhalation and external doses for 7 population groups (5 year old children and adults of average population and several special groups) in their interface to the dose combination module DCM. A detailed description of the input data to DCM can be found in chapter 3.2 of the DCM documentation (RODOS(WG3)-TN(99)11)

5 1.2 Output data The results of the dose combination module DCM comprise only the most relevant output of the four individual dose modules. It was not intended to add up doses as a function of the individual radionuclides, foodstuffs etc. Combination of doses from different pathways are performed for doses integrated over 7 different time periods (from 6 months up to 50 years after deposition). In addition to a combination of doses from different pathways for the average population the dose combination module provides dose assessments for a few special population groups, i.e. for people with special consumption habits or residential behaviour. The reason for this is that exposure via some aquatic or forest pathways is expected to be of minor importance for the average population in many areas, but it can be of relatively high importance for individuals with special consumption habits or residential behaviour. Four types of dose sums are calculated: 1. Ingestion dose from consumption of agricultural products resulting from deposition of aerosol bound radionuclides from atmosphere onto plants and soil (as assessed in FDMT), deposition of tritium from atmosphere onto plants and soil (FDMH), irrigation of crops by contaminated water (FDMA), and feeding of contaminated water to animals (FDMA). 2. Total ingestion dose from consumption of agricultural products (contaminated via all four pathways indicated above under 1.), forest products, drinking water and fish. 3. Total external dose from deposited activity in 'terrestrial' environment and in forest. 4. Total dose via all exposure pathways, i.e. ingestion, inhalation (from plume and resuspended activity), external dose from plume and from deposited (incl. in forest) activity

6 2 Starting the DCM module 2.1 Before the run To run DCM, results of a previous run of the Terrestrial Food and Dose Module FDMT is required as input. For summing up doses, a run of at least one of the other food and dose modules (FDMA, FDMF, FDMH) is required in addition. One, two or all three of these food and dose modules can be chosen. 2.2 Starting the Dose Combination Module DCM An interactive computation run of the Dose Combination Module DCM is started in the following way: In the Main Dialogue window of RODOS select the button [Interactive]. In the Interactive Manager window choose [Configuration] and then [Importing Result-Dataset To] from the menu bar at the top to select the results of a set of previous runs of the Food and Dose Modules FDMT, FDMH and FDMF as input to DCM

7 Make sure, that in the FDMT-run the interface to DCM was activated with the Initialization windows (by default, this interface is not calculated). A window called Target Programs appears, in which the button [DCM] has to be selected. Then a window appears in which all archived runs are listed. You have to select one run of FDMT, FDMH and FDMF. A run is selected by clicking on it and then pressing the button [Apply]. Attention: If you get an error message message (Warning: configuration not completed), although you carried out all steps in the correct way, proceed with the following instructions: The reason for the error message is, that there exists no load list. Go to the Start window and click [Start]. The system will then generate an automatic copy of the required load list. You must wait until the readymessage appears; leave then the Start window by pressing [Cancel] and repeat the configuration step(s). Click on the button [DCM] in the Interactive Manager window to start a new run of DCM. A Start window for the definition of the RunId pops up, the RunId has to be entered by the user

8 The RunID can be any character string using letters and numbers (maximum 12 characters) and must be different from the RunIDs of previous runs which are still in the data base. By selecting [Initializing] in the window, Initialization windows can be opened which enable the selection of results to be calculated by DCM. The windows are described in detail in chapter 3. Initialization windows of DCM. When returning from the Initialization windows a window Program Initialization appears: Now, three options are available: To apply the selection made in the Initialization windows before click on [Apply] and then [Return]. To make new selections in the Initialization windows click on [unlock buttons] and then [DCM40] again. To start the program with the preset selections click on [Return]. If no initialization via the Initialization windows is done, the program run is started with the preset selections (as described in section 3). The program run is started by clicking on [Start] in the Start window

9 Attention: After pressing [Initializing] or [Start] in the Start window you can get an info message, telling you that there is no load list available and that an automatic copy will be generated by the system. Wait until that has finished. Then press [Initializing] or [Start] again and continue. After the program has been started, a Control & Services window appears. This control window is divided into an upper and lower part. The upper part contains the RunID of the currently selected run as well as four buttons to control the runs. The lower part contains four buttons with which various services can be chosen. Both types of buttons are described in detail in the User Guide for the Graphical System. The only button in the lower part which is of interest for DCM is the button: [Process Status]: Selecting this service opens a window with the list of all modules of the selected run and their actual state. The colour coding of the modules indicates whether the module has not yet started (blue), data is loaded from the database (yellow), the module is calculating (green), the results are archived in the database (red) or the module has finished its work (grey)

10 2.3 Archived runs Archived graphical output of DCM can be displayed by selecting [File] and further [Display Results] in the menu bar of the Interactive Manager winodw of RODOS. Thereafter, a window pops up with a list of program groups available where a run can be selected. In the Program Groups window the requested DCM button has to be selected. By pressing the button [DCM], a window pops up with the list of all DCM runs archived

11 One run out of the list has to be selected and the button [Apply] has to be pressed. Thereafter, two windows appear: The Control & Services window (see above) and the Application List window. The next step is first to select the run in the Application List window by simply clicking on it (colour does not change), and in second to select the [Graphics] button in the Control & Services window. Thereafter, a window with the list of all results archived for this run is displayed

12 In this window either individual results can be selected by clicking through the context menu up to a result which is marked with a red cross. This can be selected by pressing the [Apply] button. Or it is also possible to select all results by pressing first the [All] button and thereafter the [Apply] button. The [Close] button can be selected if no further result is requested

13 3 Initialization Windows for DCM 3.1 Overview By selecting [Initializing] in the Start window (see Chapter 2) and then selecting [DCM40] in the following Program Initialization window, the Dataset Selection window comes up. This window switches between modification of either the data from the previous initialization, or the data from another initialization made earlier. After pressing the appropriate button, the Initialization windows are called to select the desired output which has to be produced by DCM. The window hierarchy is shown below: DCM MAIN MENU GRAPHICAL OUTPUT TYPE Maps Time Plots Pie charts POPULATION GROUP 5 year old Adults Vegetarians Hunters Collectors Fishermen Forest workers INTEGRATION TIME 6 months 1 year 2 years 5 years 10 years 20 years 50 years

14 3.2 Description By selecting [Initializing] in the Start window (see Chapter 2) the main Initialization Window ('DCM v4.0: Main Menu') for the Dose Combination Module DCM appears. In various sub-windows the results which shall be calculated by DCM can be selected. These subwindows can be accessed by clicking on one of the main topics in the Main Menu. [Close] closes the window, [Help] opens a help window including some comments for this main menu

15 3.2.1 Graphical output type Choosing [Graphical output type] brings up the following window in which up to three different types of graphical output can be selected: Maps: Results are displayed as a colour-coded map for all locations of the RODOS grid. Assigning various colours to ranges of the results is automatically done by the system, the exact value at each location can be accessed via the mouse cursor. Time plots: Results are shown as a time dependency plot, which displays the results for 7 time steps (see Chapter 4.1) for the location with the maximum results (a selection of other locations is not yet possible). Pie charts: Results are shown as pie charts, which shows the contributions of several pathways to the chosen doses. One, two, or all of the three types can be selected at the same time. The preset selections are 'Maps', 'Time plots' and Pie charts. This means, if no selection is made by the user all results can be displayed with these three types of graphical output. [Close] exits the window without storing any selections, [Update] confirms any selections, [Default] resets the preset selections, and [Help] brings up a comment window

16 3.2.2 Population group Choosing [population group] in 'DCM: Main Menu' opens the window 'DCM: Selection of population group' for selecting up to seven population groups for which results are to be calculated. 5 year old: average population Adults: average population Vegetarians: no meat, increased vegetable consumption Hunters: increased consumption of game meat Collectors: increased consumption rate of wild berries and mushroom Fishermen: increased consumption rate of fish Forest workers: average consumption habits, but increased time of staying in a forest The preset selections are '5 year old', 'Adults' and 'Vegetarians'. This means, if no selection is made by the user the effective doses are calculated only for these 3 groups and only the corresponding results can be displayed with the graphical output chosen before. Any subset of the seven population groups can be selected. [Close] exits the window without storing any selections, [Update] confirms any selections, [Default] resets the preset selections, and [Help] brings up a comment window

17 3.2.3 Integration time Choosing [Integration time] in 'DCM: Main Menu' brings the window 'DCM: Selection of integration times' for selecting up to seven integration times for which results are to be calculated. Combination of doses from different pathways is performed for doses integrated over different time intervals (starting with day of deposition). These time intervals can be chosen in the next window: The preset selections are '6 months' and '50 years'. This means, if no selection is made by the user the time integrated effective doses are calculated only for these two time intervals and only the corresponding results can be displayed. Any number (minimum 1) of the seven time intervals can be selected at the same time. [Close] exits the window without storing any selections, [Update] confirms any selections, [Default] resets the preset selections, and [Help] brings up a comment window

18 4 Results and Data Output 4.1 Possible results Combination of doses from different pathways are performed for effective doses integrated over the following time periods (starting with day of deposition): 6 months 1 year 2 years 5 years 10 years 20 years 50 years Four types of dose sums are calculated: 1. Ingestion dose from consumption of agricultural products resulting from deposition of aerosol bound radionuclides from atmosphere onto plants and soil (FDMT), deposition of tritium from atmosphere onto plants and soil (FDMH), irrigation of crops by contaminated water (FDMA), and feeding of contaminated water to animals (FDMA). 2. Total ingestion dose from consumption of agricultural products (contaminated via all four pathways indicated above under 1.), forest products, drinking water and fish. 3. Total external dose from deposited activity in 'terrestrial' environment and in forest. 4. Total dose via all exposure pathways, i.e. ingestion, inhalation (from plume and resuspended activity), external dose from plume and from deposited (incl. in forest) activity. Besides a combination of doses for the average population from different pathways the dose combination module provides dose assessments for a few special population groups, i.e. for people with special consumption habits or residential behaviour

19 4.1.1 Doses for average population Effective doses of the average population from the different pathways are summed up using average consumption rates and residence times for the age groups (age at time of deposition) 5 years 20 years (adults) Adding up doses from the terrestrial, forest and aquatic dose modules (FDMT, FDMF and FDMA) as well as the tritium dose module FDMH at each grid point (except those where land use data is 'water') is reasonable since in all cases 'potential doses' have been calculated Doses for special population groups In addition to the doses for the average population the dose combination module shall provide doses for special groups, e.g. Vegetarians (no meat, increased vegetable consumption) Hunters (increased consumption of game meat) Wild product collectors (increased consumption rate of wild berries and mushroom) Fishermen (increased consumption rate of fish) Forest workers (average consumption habits, but increased time of staying in a forest) For the first 4 of these groups a special data set for dietary habits is used in which the consumption rates of certain foodstuffs are much higher than for the average population; the consumption rates for other foodstuffs have to be reduced accordingly in order to avoid overestimation of activity intake. Only adult persons are considered. The situation is very similar for external exposure. For average population as well as for all special groups the relative residence times in buildings, in open air and in forest are given in the model parameter data base. These relative residence times can be specified for each radioecological region individually. On the basis of these residence times FDMT estimates the external dose during the time when staying in buildings and outdoors (using location dependent correction factors which consider the type of building etc.), while FDMF estimates the external exposure while staying in the forest. Thus, all four modules (FDMT, FDMA, FDMF, and FDMH) have to provide ingestion doses and - if applicable - external doses for all special groups in their interface to the dose combination module DCM

20 4.2 Presentation of results The results are displayed in form of maps, time dependency plots and pie charts. Maps can be generated for 4 types of dose sums (see above), for 7 population groups (age 5 and 20 years with average consumption and residence habits, vegetarians, hunters, wild product collectors, fishermen, forest workers). For each of these population groups the dose can be displayed for 7 integration times (6 months, 1, 2, 5, 10, 20 and 50 years). Time dependency plots (with 7 points in time) can be generated for 4 types of dose sums for 7 population groups. The time dependency is given for the location (grid point) with maximum dose (integrated over 50 years). Pie-charts can be generated showing 1. the contribution of deposition of aerosol bound nuclides from the atmosphere (FDMT), deposition of tritium from the atmosphere (FDMH), animal feeding and irrigation with contaminated water (FDMA) to the dose from consumption of agricultural products, 2. the contribution of agricultural products (FDMT, FDMA and FDMH), drinking water and fish (FDMA), forest products (FDMF) to the total ingestion dose, and 3. the contribution of external 'terrestrial' dose from deposited activity (FDMT), external dose in forest (FDMF), ingestion dose from terrestrial, aquatic and forest pathways (incl. tritium) external dose from cloud (FDMT) external dose from deposition to skin/clothes (FDMT), inhalation dose from plume and resuspended material (FDMT),to the total dose at the location with highest sum dose. The last 3 of these exposure pathways are considered in FDMT only, for them there is no consideration of special groups. Such graphs can be given for 7 population groups and for 7 integration times

21 4.3 Default output The following output is generated if the user does not select the desired endpoints via the initialisation windows: Maps are created for the following doses: Ingestion dose from all agricultural products Total ingestion dose Total dose from external exposure Dose from all pathways Time plots are created for the following doses: Ingestion dose from all agricultural products Total ingestion dose Total dose from external exposure Dose from all pathways Pie charts are created for the following doses: Ingestion dose from all agricultural products: contribution of Terrestrial pathways Aquatic pathways Tritium Total ingestion dose: contribution of Agric. Products Drinking Water Forest products Dose from all pathways: contribution of External exposure from ground External exposure in forest External exposure from cloud External exposure from skin/cloth contamination Ingestion Inhalation All results are generated for the population groups 5 year old children adults vegetarians and for the integration times 6 months 50 years (time plots give results for all seven integration times)

22 5 Error Correction Procedures Error messages from checking parameters from FDMT The first check of input data is made with those coming from FDMT. The following error message may occur: Error in input data! explanation message Meaning: At least one of the input data (transferred via shared common from FDMT) is beyond allowed limits. Possible reasons: The DCM version does not fit to the FDMT version from which the results were transferred; maybe there was a change of dimensions between the two versions. Error in the data transfer via shared common explanation specifies which of the input data is wrong, e.g. Number of locations (grid points) in FDMT. message gives the name of the variable and tells which limit is exceeded. This can be one of the following information: Message Meaning variable must not be less than lolim The input data variable is below its minimum value lolim variable must not be greater than hilim The input data variable is below its minimum value hilim variable must not be less than zero The input data variable is negative variable must be greater than zero! The input data variable is zero or negative The reason for such an error can be, that in the FDMT-run the interface to DCM was not calculated (this is the default; therefore activate the DCM-interface with the FDMT input windows). Warnings from checking data from FDMA, FDMF and FDMH

23 If data from one of these three modules do not fit to those of FDMT then a warning is given and the respective pathway (aquatic, forest or tritium) is excluded from summing up doses. Examples: DCM: Warning 18 Selected FDMF run is based on different ADM run than selected FDMT run! Forest pathways will be ignored or DCM: WARNING 1 Number of locations in FDMA different from FDMT! Aquatic pathways will be ignored Possible reason: The run of FDMA was based not on the same run of an atmospheric dispersion module as the run of FDMT. Therefore, it makes no sense to add up the doses from these two runs. Restart DCM with appropriate selections of FDMx runs!

24 Document History Document Title: User Guide for the Dose Combination Module DCM of RODOS-PV4.0F_02 Version and status: Authors/Editors: Florian Gering, Stephan Hübner, Heinz Müller Address: GSF - Institut für Strahlenschutz, Ingolstädter Landstr. 1, D Neuherberg heinz.mueller@gsf.de Issued by: W. Raskob File Name: Dcm_UGui_40e Date of print: December 11,