Planning Production Operations and Calculating Emissions

Use the Production Planning form to establish your production operating schedule information, and use the sections on the form to assign emission models and scenarios (activities), enter your production data, and view historical data. Additionally, you can use this form to calculate your emission data and run reports to view your resulting emissions data and applicable warnings.

Note:  To calculate actual and maximum potential emissions, use the Production Schedule and Calculate Emissions forms.

For instruction on production planning setup and emissions calculation, click the following links or use the scroll bar to scan the page.

Establishing Production Schedule Information

Calculation Log

Assigning Production Activities

Calculation Details Log

Entering Production Data

Job Log

To Add Monitoring Parameters and Results

Results and Warnings Lists

Adding and Viewing Reference Documents

View Emissions

To Add a Group of Parameters and Results

Emissions Results List

Viewing Historical Production Data

Warnings List

Setting Calculator Options and Initiating Calculations

Viewing Production Schedule Jobs

Calculation and Job Logs

 

Establishing Production Schedule Information

When preparing your entity for emissions calculations using the Production Planning form, you must schedule the operation for each of your entity’s production units. The Essential Air calculator uses this production schedule information to determine the actual emissions generated by a production unit over a date range. Because of the production unit’s inherent hierarchy, you can calculate emissions based on a production unit and capture process unit emission detail.

To establish production schedule information

  1. Click Data Entry > Emissions Management > Production Planning on the Navigation Tree.

    The Production Planning list appears.

  2. Click the New button.

    The Production Planning form is displayed.

  3. Select an Entity and Production Unit name from the list for each field.

    If the appropriate value is not listed, click the Ellipsis button next to the field and add it.

  4. Enter the Date Range, and start/end times when applicable, for the production schedule. The Calendar button is available to select the date.

  5. Click Save to create a new production schedule for the enterprise entity, production unit, and date range entered.

    The total number of hours for the date range is automatically calculated and the Maximum Hours field is populated with the result.

  6. Review the values in the Operating Hours and Percentage fields, and make any necessary adjustments if your production unit is operating at less that 100%.

    When you adjust one figure, the other one will be automatically recalculated.

  7. Select a Production Material from the list when the production unit is producing a specific product. This field is used for documentation purposes and does not affect your production schedule.

  8. Click Save.

  9. Repeat steps 2 through 8 to establish other production schedule information.

Assigning Production Activities

In the Production Activities section on the Production Planning form, assign activities (emission models and scenarios) to your production schedule. Because multiple process units can be assigned to one emission model/scenario and the same process unit assigned to multiple models/scenarios, you need to isolate the process units that apply to your schedule. The Essential Air calculator determines which process units to evaluate for your emissions inventory based on your selection of one or more emission models and scenarios.

Activities will be available for assignment to a production schedule if they meet the following two criteria:

  1. The emission model and scenario must be assigned to a process unit within the production unit that you are scheduling.

  2. The emission model and scenario must be effective during the date range of the production schedule. This means that the emission model's effective date must be earlier than or equal to the production schedule's end date.

To assign production activities

  1. Locate the schedule on the Production Planning list, click the link to open the Production Planning form, and expand the Production Activities section if necessary.

  2. Use the guidelines below to assign activities. Each assigned activity is displayed as a line item in the Production Activities section.

  1. Click the Save button on the form.

Entering Production Data

In the Production Data section on the Production Planning form, applicable parameters can be displayed and corresponding values entered. The Essential Air calculator uses this production data to calculate the actual emissions generated by the specified production unit.

As you assign activities for the production schedule in the Production Activities section, the parameters are identified based on calculations that are defined for the selected activities. Each row in the Production Data section represents the process data for one parameter on a specific date/time. The Parameter field displays monitoring parameters using a concatenation of the parameter's process or production unit (unless it is an enterprise entity parameter), material (if it is a material monitoring parameter), parameter, and material qualifier. For example, a monitoring parameter that records the sulfur concentration in a coal at a Boiler 10021 might be identified as "Boiler 10021 - Coal - Concentration - Sulfur". Additional fields provide the value, units of measure, nd source type. You can view historical production data to find out if the value has changed since it was last entered.

Additional parameters and results can be added to the production schedule either individually or as a group. To add parameters and results as a group, specify a date/time and click Add Blank Rows to display a list of parameters. The list represents the complete set of parameters required to calculate emissions for all process units in the production unit, for the production activities specified. Enter a value for each parameter to be included in the production schedule. Any parameter without a value will not be saved.

When parameters and results are added individually, related files that exist in third-party applications, such as Microsoft Word, can be associated with the result when it is entered. After parameter results are added as a group, each result can be edited individually; reference documents can be associated with the record at that time.

Result entries are validated upon save. After basic data validation, the entries are compared to the limits set for the parameter in the Value Range fields on the Parameter form. A message is displayed if a result entered violates a limit. Edit the result or change the acceptable limits on the Parameter form. Next, the entries are compared to the % Variation From Previous Value limits entered in the Results Settings section on the Parameter Definition form. A message is displayed if a result entered violates a limit. Either change the value or enter a comment in the Comment field to save the result entered. Refer to Parameter Results Validation Process for additional information.

To add monitoring parameters and results

  1. Locate the schedule on the Production Planning list, click the link to open the Production Planning form, and expand the Production Data section if necessary.

  2. Click Add Production Data to open the Production Data Entry form.

  3. Select a monitoring Parameter from the list.

  4. Enter the appropriate Result Date or click the Calendar button and select one.

  5. Enter a corresponding result time using the HHMMSS format. Select the AM or PM option.

    When no entry is made, the time defaults to 12:00:00 AM.

  6. Enter the Result (monitoring parameter value) and select a Result Unit of measure from the list.

  7. Select a Picklist Value from the list. This field is only displayed when the parameter has been associated with a picklist. If no values have been entered for the picklist, no list values will be available for selection. Refer to User-Defined Picklists for additional information.

  8. Enter any notes in the Comment field.

  9. Select a Reason for Change and Data Origin from the list for each field. Entries may be required if the parameter was established to require an entry when a result is entered or edited.

    If the appropriate value is not listed, click the Ellipsis button next to the field and add it.

  10. Click Save and use the following guidelines to continue:

  1. Add reference document links and/or attachments when applicable.

  2. Repeat steps 2 through 11 to add other monitoring parameters and results. Otherwise, close the window.

    The parameter information is displayed as a line item in the Production Data section. Use the buttons adjacent to the line item to edit parameter information or delete the parameter.

  3. Click the Save button on the Production Planning form.

Adding and Viewing Reference Documents

The following two methods are available for adding related files that exist in third-party applications, such as Microsoft Word, to monitoring data entry records using the Document Links section on the Production Data Entry form:

  1. Document Links - Set up a hyperlink to the file. Optionally, the location of an off-line reference can be specified without a link.

  2. Document Attachments - Add a file to the record. A copy of the file is placed on the server and made available for user access. Any changes made to the original file after the attachment will not be present in the copy. The default maximum file upload size supported by ASP.NET is 4096 KB (4MB). The default can be modified to support larger file uploads, i.e., attaching files larger than 4MB. For instructions to increase the default value, refer to Microsoft (https://docs.microsoft.com) and view the article: httpRuntime Element (ASP.NET Settings Schema).

Each link or attachment is displayed as a line item in the Document Links section. Attachments and linked documents can be viewed by clicking the link.

Note:  In order to view a file listed in the Document Links section, desktop access to the particular software used to create the file must be available. For example, access to Microsoft Word is required to view an attachment created as a Word file (.doc, .docx).

To add document links

  1. Expand the Document Links section if necessary.

  2. Click Add Link.

  3. Enter a Description of the document.

  4. Enter the full file path to the document in the Document Location field.

  5. Select a Document Type from the list.

    If the appropriate type is not listed, click the Ellipsis button and add it.

  6. Ensure the Is Hyperlink check box is selected to establish the link.

    When specifying an off-line location, ensure the Is Hyperlink check box is not selected.

  7. Click OK.

    The document information is added as a line item in the Document Links section. Click the link to view the file. Edit existing attachment information using the buttons adjacent to the line item.

  8. Click Save.

  9. Repeat steps 2 through 8 to add other document links.

To add document attachments

  1. Expand the Document Links section if necessary.

  2. Click Add Attachment.

  3. Enter a file path in the File field or click Browse to locate and select a file.

  4. Enter a Description of the attachment.

  5. Repeat steps 3 and 4 to add a second and/or third attachment.

  6. Click OK.

    Each attachment is added as a line item in the Document Links section. Edit existing attachment information using the buttons adjacent to the line item.

  7. Click Save.

  8. Repeat steps 2 through 7 to add other attachments.

To add a group of parameters and results (Blank Rows)

  1. Locate the schedule on the Production Planning list, click the link to open the Production Planning form, and expand the Production Data section if necessary.

  2. Review the date and time displayed for adding blank rows and make any appropriate changes.

    The date and time specified will be used for each monitoring parameter added. The date/time can be changed when adding parameter values.

  3. Click Add Blank Rows.

    The list displayed represents the complete set of parameters required to calculate emissions for all process units in the production unit, for the production activities specified.

  4. Click the Edit button adjacent to the parameter line item to open the Production Data Entry form.

  5. Change the Date/Time entry when applicable.

  6. Enter a parameter result Value and select a corresponding Unit of measure from the list.

  7. Select a Picklist Value from the list. This field is only displayed when the parameter has been associated with a picklist. If no values have been entered for the picklist, no list values will be available for selection. Refer to User-Defined Picklists for additional information.

  8. Enter a Comment when applicable.

  9. Select a Reason for Change and/or Data Origin from the list for each field. Entries may be required if the parameter was established to require an entry when a result is entered or edited.

    If the appropriate value is not listed, click the Ellipsis button next to the field and add it.

  10. Click OK.

  11. Repeat steps 4 through 10 for all other parameters to be added.

    Any parameter without a value will not be saved.

  12. Click the Save button on the form.

    Each parameter is displayed as a line item in the Production Data section. Edit existing parameter information using the buttons adjacent to the line item. Use the Edit button to add reference documents when applicable.

  13. Repeat steps 2 through 12 to add another group of the monitoring parameters.

  14. Click the Save button on the Production Planning form.

Viewing Historical Production Data

In the Historical Production Data section on the Production Planning form, view monitoring parameter values that represent a specified production schedule’s most recent values obtained prior to the production schedule start date or last saved monitoring parameter values. This functionality allows you to view parameters that maintain their values from one production schedule to the next. Monitoring parameters’ values remain effective until they are replaced with a new value.

You can use the data in the Historical Production Data section to transfer valid values for the monitoring parameters in the Production Data section.

Setting Calculator Options and Initiating Calculations

In the Calculator Options section on the Production Planning form, you can choose a method for calculating your data. The methods include:

Select the Generate Calculation Detail Log option to include calculation details in the Calculation Log. Otherwise, just the warning details encountered during emissions calculation execution that are equation-related (e.g., invalid expression) and/or material-related (e.g., missing vapor pressure method) will be included. Refer to Calculation Details Log for additional Information.

Note:  The Generate Calculation Details Log option must be selected to populate intermediate calculation values (i.e., the value for each equation variable and equation expression) in the ARS calculation results table (WH_EMIS_CALC_VALUE).

After selecting a calculation method, initiate the calculation process by clicking Calculate Emissions.

Calculation and Job Logs

Calculation Log

A record is added to the Calculation Log each time an emissions calculation is executed. The log can be viewed in the Calculator Options section on the Calculate Emissions form, Emissions Calculation Job form, and Production Planning form. The calculation execution date, the entity, and the actual calculation start and end date are provided for each log entry. A Yes/No indicator lets you know if the calculation process ran with warnings. Standard search options are available to display just the log entries of interest at a point in time. When multiple pages of log records exist, the Next/Previous navigation links are available to page through the list. Ascending/descending column sorting is also available; click a column heading to sort by the values in the column. The AutoRefresh option allows you to switch between a working mode and the Calculation Log refresh mode. In the refresh mode, the log is automatically updated every 10 seconds. It is possible to use the search, filtering, and sorting options in the refresh mode; however, when the Calculation Log is refreshed and there are new entries, all search/filtered/sorted results could be lost. The list of log entries will be reset to display the new ones at the top of the list. By switching to the working mode, you can continue working without interruption. Select the AutoRefresh check box to activate the refresh mode and clear the check box to switch to a working mode. The Refresh link can be used at any time to update the log. For notification purposes, a Loading... message appears when the Calculation Log is being refreshed.

Click a log entry link to view additional calculation information. The Calculation Details Log section is populated if the Generate Calculation Details Log option on the Emissions Calculation Job form, Calculate Emissions form, or Production Planning form is selected prior to calculations. The mass value is automatically calculated, Amount x Number of Operating Hours, and included in the details. The Detailed Warnings section contains warnings encountered during emission calculation execution that are equation-related (e.g., invalid expression) and/or material-related (e.g., missing vapor pressure method). The details provided about the calculations are suitable for use by the Essential support group for troubleshooting emission calculation issues.

Tip:  The Calculation Log can also be viewed by clicking Reports > Emissions Report > Calculation Log in the Navigation Tree.

Calculation Details Log

The Calculation Details Log is a section on the Calculation Log that is populated if the Generate Calculation Details Log option on the Emissions Calculation Job form, Calculate Emissions form, or Production Planning form is selected prior to calculations.  The details provided demonstrate how calculations are performed and are typically used for verification and troubleshooting. Due to the level of detail generated, this log is intended to be used for smaller data sets. For example, generating the log for all calculations performed at an entity for an entire year may cause performance issues and the log may be slow to display. Use one or both of the following methods to generate a smaller, and therefore usable, Calculation Details Log:

Note:  The Generate Calculation Details Log option must be selected to populate intermediate calculation values (i.e., the value for each equation variable and equation expression) in the ARS calculation results table (WH_EMIS_CALC_VALUE).

Job Log

Each time the calculation process is initiated, a separate Air Calculator job is created and an entry is added to the Job Lob. The start and finish date/time, the name of the job, the run status, a description of any run errors, and the name of the user who initiated calculations are provided for each log entry. The log can be viewed in the Calculator Options section on the Calculate Emissions form and the Production Planning form.

Jobs are processed according to a pre-configured priority in a managed, queue-based environment to minimize system contention. Use the Job Log to determine your job's position among all the jobs scheduled to run and to determine the current/final run status. Standard search options are available to display just the log entries of interest at a point in time. Ascending/descending column sorting is also available; click a column heading to sort by the values in the column. When multiple pages of log records exist, the Next/Previous navigation links are available to page through the list. The AutoRefresh option allows you to switch between a working mode and the Job Log refresh mode. In the refresh mode, the log is automatically updated every 10 seconds. It is possible to use the search, filtering, and sorting options in the refresh mode; however, when the Job Log is refreshed and there are new entries, all search/filtered/sorted results could be lost. The list of log entries will be reset to display the new ones at the top of the list. By switching to the working mode, you can continue working without interruption. Select the AutoRefresh check box to activate the refresh mode and clear the check box to switch to a working mode. The Refresh link can be used at any time to update the log. For notification purposes, a Loading... message appears when the Job Log is being refreshed.

Results and Warnings Lists

View Emissions

When your emissions calculations are complete, you can view your results in a report. Click View Emissions in the Calculator Options section on the Production Planning form. The Emissions report is displayed with the total and average emissions in pounds per hour for a material, as well as the model/scenario and output type subtotals.

Emissions Results List

Click the Emissions Results List in the Calculator Options section on the Production Planning form to view the Emissions Results List report. It provides a browse view of completed emissions calculations and results. The emissions data includes the process unit, output type, emission model and scenario, date range, material, and its emission rate.  

Emission results can also be viewed by entity, process unit, production unit, and/or emission unit on the Emissions forms. You can display the emissions data over any date range that has been calculated. If a process unit is associated with more than one emission model and scenario, you can select just the ones you want included. By default, material emissions data is displayed for each emission model and scenario separately. However, you have the option to sum a material's emissions data over all emission models and scenarios. Refer to Viewing Emissions Data and Results for additional information.

Warnings List

Click Warnings List in the Calculator Options section on the Production Planning form to view the Calculation Warnings List report. It provides a browse view of existing informational warning messages regarding the status of all completed calculations. Warnings are assigned a priority ranging from 1 to 3:

The warning messages include a text description of the problem encountered as well as the database context for the calculation. The database context will help you to identify the exact cause of the problem.

Calculation warnings can also be viewed using the Calculation Warnings form. Refer to Viewing Calculation Warnings for additional information.

Viewing Production Schedule Jobs

If a production schedule has been created by a production schedule job, details about the job that created the production schedule are listed in the Production Schedule Job section on the Production Planning form. The schedule description, job run date, schedule type, and status are provided. Click a link to open the Production Schedule Job form and review additional details.

Related topic

 Viewing Calculation Warnings