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AVEVA Pipeline Operations for Liquids

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Understand Linepack Tracking

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  • Last UpdatedJul 04, 2024
  • 2 minute read

To help track changes in linepack volume over time, the Batch Tracking application captures the following values every processing cycle and stores them in the RealTime database (RTDB) at the Pipeline Segment level, Section level, and Pipeline level.

Pipeline Segment Level

Value

RTDB Table and Field

Segment Current Cycle Linepack

pipe_segment.*.linepack

Segment Previous Cycle Linepack

pipe_segment.*.prevlpack

Segment Delta Linepack = Segment Current Cycle Linepack - Segment Previous Cycle Linepack

pipe_segment.*.deltalpack

Segment Top of Hour linepack

pipe_segment.*.tohlinepack

Segment Previous Top of Hour Linepack

pipe_segment.*.prevtohlpack

Segment Hourly Delta Linepack = Segment Top of Hour Linepack - Segment Previous Top of Hour Linepack

pipe_segment.*.tohdeltalpack

Note: For Segments that serve as stubs, the values of the fields listed above are set to zero—except for the value of pipe_segment.*.linepack, which is set to the stub capacity.

Section Level

Value

RTDB Table and Field

Section Current Cycle Linepack = Sum of the linepack values of all non-stub pipeline segments assigned to the section

section.*.linepack

Section Previous Cycle Linepack

section.*.prevlpack

Section Delta Linepack = Section Current Cycle Linepack - Section Previous Cycle Linepack

section.*.deltalpack

Section Top of Hour linepack

section.*.tohlinepack

Section Previous Top of Hour Linepack

section.*.prevtohlpack

Section Hourly Delta Linepack = Section Top of Hour Linepack - Section Previous Top of Hour Linepack

section.*.tohdeltalpack

Pipeline Level

Value

RTDB Table and Field

Pipeline Current Cycle Linepack = Sum of the linepack values of all non-stub pipeline segments assigned to the pipeline

pipeline.*.linepack

Pipeline Previous Cycle Linepack

pipeline.*.prevlpack

Pipeline Delta Linepack = Pipeline Current Cycle Linepack - Pipeline Previous Cycle Linepack

pipeline.*.deltalpack

Pipeline Top of Hour linepack

pipeline.*.tohlinepack

Pipeline Previous Top of Hour Linepack

pipeline.*.prevtohlpack

Pipeline Hourly Delta Linepack = Pipeline Top of Hour Linepack - Pipeline Previous Top of Hour Linepack

pipeline.*.tohdeltalpack