Understand the Runtime data
- Last UpdatedApr 24, 2025
- 2 minute read
The Runtime section on the Pipeline Monitoring (PLM) Control window highlighted in blue, contains in a tabular format, the calculated balance for each period along with the summarized inputs to the balance calculation.
Each row is labeled for the balance term that the calculations are for. Rows ST1 to XT3 are the periods that can be configured.
Day, Week, and Month are fixed periods, referring to the current day, current week, and current month. No balance limits are applied for the fixed periods.
For more information, refer to the AVEVA Pipeline Operations for Liquids Administrator documentation.
The following table details the PLM Runtime information appearing in the Runtime section.
|
Column |
Description |
|---|---|
|
Period |
The configured time interval for the period. The interval is minutes for the short-terms, hours for the long-terms, and days for the extended terms. |
|
Deviation |
Deviation or balance for the term.
Where: Balance Tuning Factor and Deviation Filter Constant are at default values of one (1). |
|
Meter In |
Sum of change in volume count for all meters measuring flow into the PLM region. |
|
Meter Out |
Sum of change in volume count for all meters measuring flow out of the PLM region. |
|
Delta Linepack |
Change in linepack volume for all pipes in the PLM region. |
|
Tank |
Change in volume for all tanks in the PLM region. |
|
Delta Flow |
Flow difference.
|
|
% Dev |
Deviation or balance in relation to flow in.
|
|
Per In Alarm |
If yes, a deviation limit has been exceeded. |
|
Status |
The status indicates data quality. If the number of discrete intervals making up the period that were flagged as having bad data exceeds the configured Bad Data Threshold, this is set to Bad Data. Otherwise, the field is set to Normal Data. |
The following table detail the PLM Runtime field information.
|
Field |
Description |
|
Total Linepack |
Current sum of linepack volume for all pipes in the PLM region. |
|
Total Linepack Change |
Linepack change since previous minute. |
|
Day Balance – Current |
Balance calculated from the start of the current day. |
|
Day Balance - Previous |
Balance calculated on the previous day. |