Supplier Quality, Development & Audits worked example

Supplier On-Time Quality Score with delivery and quality failure severity of 3 score: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop delivery and quality failure severity to 3 score, then walk the calculation through step by step. Estimate supplier on-time quality for supplier quality, development and audits using production-ready inputs so teams can rank risks and decide which issue needs containment, controls, or escalation first.

The inputs for this scenario

  • Delivery/quality failure severity (impact if a late or defective lot ships): 3 score (the input this scenario stresses; the baseline uses 6)
  • Failure occurrence likelihood (how often this supplier misses OTD or quality): 4 score (held at the documented default)
  • Detection capability (chance you catch it before it hits the line): 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Supplier on-time quality risk score = supplier on-time quality severity score × supplier on-time quality occurrence score × supplier on-time quality detection score.
  • Supplier on-time quality risk score works out to 3.35 score at these inputs, and this is the headline figure for the scenario.
  • Supplier on-time quality severity score works out to 3 score at these inputs.
  • Supplier on-time quality occurrence score works out to 4 score at these inputs.
  • Supplier on-time quality detection score works out to 3 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where delivery and quality failure severity sits at 6 score and the headline result is 4.55 score, this scenario comes in 26.37% below the baseline at 3.35 score.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to delivery and quality failure severity, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. Multiplicative RPNs can hide a critical severity behind low occurrence and detection, so always review high-severity suppliers regardless of total score.

Results at a glance

  • Supplier on-time quality risk score: 3.35 score (headline result)
  • Supplier on-time quality severity score: 3 score
  • Supplier on-time quality occurrence score: 4 score
  • Supplier on-time quality detection score: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Supplier On-Time Quality Score calculator, set delivery and quality failure severity to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.