Transcript. The Toolkit Level 2 Spreadsheet

Transcription

1 Transcript The Toolkit Level 2 Spreadsheet Mercury:Learn Inventory Level 2 Modules Now we will look in detail at the Toolkit s spreadsheet and how its different elements work. What is described in this tutorial is very important to understand the functions of the spreadsheet. You can replay the tutorial, try it out step by step for practice in the Inventory Level 2 spreadsheet and take notes if needed. The following training modules that you will use are structured by main sources of mercury releases. Those modules provide descriptions of the mercury source categories, detailed information on each source sub-category, the data types needed, and ideas for where to search for that data. Those modules work closely in parallel with the electronic spreadsheet. When you study, for example, the training module on mercury releases from extraction and use of fuels/energy sources, you open and work on the tab called Fuels in the Excel spreadsheet. You can use each training module and its respective tab in the spreadsheet simultaneously.

2 Each tab starting with a 5 is the tab for each source category. The numbering is identical to the relevant section number in the Toolkit Reference report, where explanation and background data are given. Note that some of the source categories in this spreadsheet are different than those in Inventory Level 1. The source categories in Level 1 were simplified. However, if you are interested in refining your Inventory Level 1 data using the Inventory Level 2 methodology, the next modules will indicate how and what specific sub-categories you could refine with data from the Level 2 tabs. See lesson 2.6 on refining your Inventory Level 1. In the inventory Level 2 spreadsheet, all cells are open for data entry. As you can see, some of the cells already contain default data provided as guidance to the user, for example, the input factors. However, as previously explained, that data can be changed in case you have national reliable data. You need to make sure to clearly understand the Toolkit methodology and your national data before starting to modify data in those cells. Now, going in detail through the columns and rows of one specific source category tab, you will see that we start with two columns that show section numbers. These numbers are the respective number of sections and sub-sections in the Toolkit Reference Report for the source category and sub-categories. These numbers will help you to cross-reference with the Reference Report to find detailed explanations and information about those categories and sub-categories.

3 Then you have the column for the name of the category and sub-categories. Here you can see that these rows with a 2-digit number are the categories, and those with a three-digit number are sub-categories. Also note that in this column you will also have the relevant life-cycle phases for each sub-category. In cells where you only have the sub-category name, it is because you only take one life-cycle phase into account. In this next column, you need to indicate if categories and sub-categories are existent in your country. Indicate y for yes, n for no, and? for uncertain. Be confident entering your immediate findings first, you can always adjust them later when you have more information. Do not insert any other parameter different than y, n or?. The next two columns show default input factors relevant for each source subcategory, with their respective unit. This can be used as a reference. And in the next two columns, this Inventory Level 2 spreadsheet provides you with suggested default input factors that are intermediate factors based on available data, to facilitate your mercury release estimations. As mentioned previously, you can modify data in any cell, but you need to make sure that you have accurate and well-documented data to substitute it with. All factors used in the calculations are to be reported explicitly in your inventory report. Note that the units provided in these columns are very important. Calculations will only work properly if you enter the data in the precise units specified for each

4 source. For example, the calculations would obviously go wrong if you enter volumes of coal instead of metric tons of coal used annually. In the next column, you need to insert the activity rate for each source subcategory and each life-cycle phase. Remember that the activity rate represents the amount of mercury that is entering the system or process. Details will be provided to you in each module about the corresponding section of the Toolkit Reference Report for each source sub-category, so you can read about what type of activity rate you must use. The spreadsheet already indicates in what specific unit the activity rate should be written. Again, it is of paramount importance that you enter your activity rate data (production, consumption, use) with the exact unit stated in the spreadsheet. If you do not, the spreadsheet will produce incorrect results. For some mercury source sub-categories, a simple conversion tool has been included as a separate sheet in the Inventory Level 2 spreadsheet file. We explain the use of this conversion tool in the relevant modules. Otherwise data conversion factors will need to be sought on the Internet or perhaps you could ask for help from relevant resource persons in a university or from your agency. When you have entered an activity rate, the spreadsheet will automatically calculate the Calculated Hg Input (where Hg is short for mercury), with its respective unit. The spreadsheet includes formulas for these calculations. As

5 formulas are not protected, be careful not to touch the formula cells unintentionally. Then, you need to use that Calculated Hg Input and decide on your Output Scenario. The spreadsheet already provides suggested probable output scenarios, depending for example, on the filters and emission reduction devices that exist in your country for relevant source sub-categories. For sources where there is only one output scenario, this column is empty. For sources where different Output Scenarios are applicable, the description of the scenario is given in this column, and corresponding output distribution factors are entered - or can be entered - in the column to the right. You need to enter the actual distribution of the Calculated Hg Input to the relevant output scenarios. This can be a little tricky, so let me show you an example. *Note that in the Inventory Level 2 Spreadsheet the cells coloured in blue are the ones where you normally enter data, whereas the columns coloured in yellow are those where results are calculated. For example for combustion of bituminous (hard) coal, half of the annual coal supply may be used in facilities with no emission reduction devices, while the other half is used in facilities with fabric filters. In this example, 50% of your mercury input must be entered in the "no devises" row in this column, while the other 50% must be entered in the "fabric filters" row. Remember, the sum of these shares of the input must always be equivalent to 100% of the Calculated Hg Input.

6 In the next columns you have the output distribution factors, which are unit-less. The spreadsheet also includes already suggested output distribution factors, based on the data presented in the Toolkit Reference Report. Remember that well documented national or local distribution factors should always be preferred, if available. Provide documentation for the used factors in the inventory report. Note that the sum of all output distributions factors for a source must be 1, with a few exceptions, which are described for the relevant sub-categories (in notes, in the Spreadsheet). Once you have your Calculated Hg Input and your Output Scenarios and Distribution Factors, the spreadsheet will automatically calculate your Calculated Hg Outputs to each release pathway. These are air, water, land, in products, in general waste, and in sector-specific treatment or disposal. Regarding the insertion of data in the spreadsheet, you will use the decimal point or decimal comma according to your personal computer set-up. In these online training modules, a decimal point is used. Make your choice of decimal separator in your inventory result, and assure consistency between text and data tables in this respect. The Excel spreadsheet provides you with a number of summary and results tabs. You will be able to use those results of your inventory in your inventory report, which is explained in more detail in the last modules on Inventory Level 2. You will be also able to enter this data obtained with Inventory Level 2 in your Inventory

7 Level 1 spreadsheet, to refine data on specific sub-categories. This is explained in lesson 2.6 You can obtain the following results tables: - A general summary - An Executive Summary - Graphs presenting the executive summary results visually. During your work, there are other summaries that you can use, for instance that of mercury inputs. You can use them as relevant. Now that you have seen how the basic elements of the Toolkit work, go through your spreadsheet to get used to its components. Then you can come back to this training module. If any of the instructions above were not clear to you, you can listen again or you can download the transcript of this video that is available in the footnote to the video in your module. You can review there all steps in a written format.