Ammunition Components & Ballistics Manufacturing worked example

Ammunition Component Supplier Risk Score with field-failure severity of a bad component of 4 score: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop field-failure severity of a bad component to 4 score, then walk the calculation through step by step. Score supplier planning risk from impact severity, occurrence likelihood, and detection strength for component or packaging supply.

The inputs for this scenario

  • Field-failure severity of a bad component: 4 score (the input this scenario stresses; the baseline uses 8)
  • Likelihood the supplier ships a defect: 5 score (held at the documented default)
  • Weakness of incoming inspection to catch it: 4 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Supplier planning risk score = supplier impact severity × supplier occurrence likelihood × incoming detection weakness score.
  • Supplier planning risk score works out to 4.35 risk score at these inputs, and this is the headline figure for the scenario.
  • Supplier impact severity works out to 4 score at these inputs.
  • Supplier occurrence likelihood works out to 5 score at these inputs.
  • Incoming detection weakness score works out to 4 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where field-failure severity of a bad component sits at 8 score and the headline result is 5.95 risk score, this scenario comes in 26.89% below the baseline at 4.35 risk score.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to field-failure severity of a bad component, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. RPN is ordinal, not absolute — a 200 is not literally twice as risky as a 100, and equal RPNs can hide very different severity profiles, so always inspect the severity component separately.

Results at a glance

  • Supplier planning risk score: 4.35 risk score (headline result)
  • Supplier impact severity: 4 score
  • Supplier occurrence likelihood: 5 score
  • Incoming detection weakness score: 4 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Ammunition Component Supplier Risk Score calculator, set field-failure severity of a bad component to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.