Reverse Survey Readings

Use the Reverse option to reverse the order of survey readings so that the first reading becomes the last and the last reading becomes the first. Station numbers for all other survey readings are changed so that the survey is reversed or "flipped". This function is typically used when survey readings were taken in an upstream direction instead of downstream, or vice versa.

These instructions start with the assumption that the ISM module is already selected and the correct pipeline segments have been selected. For information detailing how to select pipeline segments, refer to Select ROWs.

Complete the following steps to reverse the order of survey readings:

1. Click Data Entry > Edit ISM Data.

2. Select a continuous survey data type.

   

   Edit ISM Data Window

3. Select a survey folder with survey readings you want to modify from the Selected Continuous Survey drop-down list.

   

   Select Continuous Survey List

4. Click Survey Maintenance to open the Survey Maintenance window. Then click the Reverse tab if the tab is not selected.

   

   Reverse Survey Readings

5. Type a starting station number in the Starting Station Number field. Press Tab and enter ending station number in the Ending Station Number field.

   For example, enter 1071232 for a station number 10712+32. When you hit Tab, the number adjusts to 10712+32.

6. If desired, click the close button to cancel the operation and close the window.

7. Click Apply to reverse survey readings and update the data entry grid.