IIoT, SCADA & Edge Connectivity worked example

Data Pipeline Reliability Score with pipeline severity score of 3.5 score: a worked example

Suppose pipeline severity score falls to 3.5 score. This page works the full calculation at that level so you can see exactly which result moves and by how much. Score the reliability risk of an OT data pipeline (PLC to broker to historian to consumer) using severity (impact if pipeline fails), occurrence (likelihood of pipeline failure), and detection (likelihood current monitoring catches a failure early). The engine returns a weighted reliability risk score.

The inputs for this scenario

  • Pipeline severity score: 3.5 score (the input this scenario stresses; the baseline uses 7)
  • Pipeline occurrence score: 4 score (held at the documented default)
  • Pipeline detection score: 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Weighted pipeline reliability risk score = severity × 0.40 + occurrence × 0.35 + detection × 0.25.
  • Weighted pipeline reliability risk score works out to 3.55 score at these inputs, and this is the headline figure for the scenario.
  • Pipeline severity score works out to 3.5 score at these inputs.
  • Pipeline occurrence score works out to 4 score at these inputs.
  • Pipeline detection score works out to 3 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where pipeline severity score sits at 7 score and the headline result is 4.95 score, this scenario comes in 28.28% below the baseline at 3.55 score.
  • It computes a single weighted reliability risk score from FMEA severity, occurrence, and detection ratings, weighted 40/35/25. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Weighted pipeline reliability risk score: 3.55 score (headline result)
  • Pipeline severity score: 3.5 score
  • Pipeline occurrence score: 4 score
  • Pipeline detection score: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Data Pipeline Reliability Score calculator, set pipeline severity score to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.