How do you calculate a production readiness audit risk score?

Multiply the severity, likelihood, and detectability ratings together. Using the standard preset of severity 6, occurrence 4, and detection 3 gives a risk score of about 4.55 on the calculator's normalized scale.

What is a good production readiness risk score?

Lower is better. There is no universal threshold, but teams set a cutoff and require any item above it to have a closure plan before the readiness gate is passed.

How is this different from a full FMEA?

It uses the same severity-times-occurrence-times-detection logic but is scoped to launch-readiness gaps rather than every process failure mode, so it is quick enough to run live in a gate review.

Why multiply instead of add the three scores?

Multiplication makes a high rating in any one dimension dominate the total, which correctly flags a gap that is severe, or likely, or hard to detect, even if the other two are moderate.

What does a high detectability score mean?

On the standard scale a high detection number means the gap is hard to catch before it escapes, which raises the risk score. Improving detection is often the fastest way to lower an item's score.

Can two items with the same score have different priorities?

Yes. Because the scores are ordinal, a 6x4x3 item and a different 8x3x3 item can land close together, so always review the individual severity, likelihood, and detectability behind the number.

Production Ramp, Scale-Up & Launch Readiness calculator

Production Readiness Audit Calculator

The Production Readiness Audit calculator turns a launch-readiness gap into a single risk priority number by multiplying severity, likelihood, and detectability, in the same spirit as an FMEA RPN. Launch teams and quality engineers use it during readiness reviews and gate checks to rank open items so the riskiest gaps get closed first before Job 1. It gives a launch board an objective way to argue that one open action outranks another instead of debating by gut feel. Scored consistently, it makes readiness reviews faster and defensible.

What this calculator does

Estimate production readiness audit for production ramp, scale-up and launch readiness using production-ready inputs so teams can rank risks and decide which issue needs containment, controls, or escalation first.
Use it when production readiness audit in production ramp, scale-up and launch readiness needs a defensible ranking against other production ramp, scale-up and launch readiness risks for the next review.
It multiplies severity, likelihood, and detectability ratings into one production-readiness risk score for ranking open launch items.

Formula used

Production readiness audit risk score = production readiness audit severity score × production readiness audit occurrence score × production readiness audit detection score
Use the same scoring scale across comparable production readiness audit risks.

Inputs explained

Readiness gap severity rating:
Readiness gap likelihood rating:
Readiness gap detectability rating:

How to use the result

Use it at readiness gates and launch reviews to prioritize which open gaps must be closed before start of production.
Multiplied ordinal scores are not linear, so the same number can arise from very different risk profiles; always inspect the three inputs, not just the total.

Common questions

How do you calculate a production readiness audit risk score? Multiply the severity, likelihood, and detectability ratings together. Using the standard preset of severity 6, occurrence 4, and detection 3 gives a risk score of about 4.55 on the calculator's normalized scale.
What is a good production readiness risk score? Lower is better. There is no universal threshold, but teams set a cutoff and require any item above it to have a closure plan before the readiness gate is passed.
How is this different from a full FMEA? It uses the same severity-times-occurrence-times-detection logic but is scoped to launch-readiness gaps rather than every process failure mode, so it is quick enough to run live in a gate review.
Why multiply instead of add the three scores? Multiplication makes a high rating in any one dimension dominate the total, which correctly flags a gap that is severe, or likely, or hard to detect, even if the other two are moderate.
What does a high detectability score mean? On the standard scale a high detection number means the gap is hard to catch before it escapes, which raises the risk score. Improving detection is often the fastest way to lower an item's score.

Last reviewed 2026-05-12.