![]() Way, one bad part per day! Notice I did not say one bad part per day per That means that you would be allowed 25 pieces for everyġ,000,000 pieces or 250 defective parts per year. Let's assume your customers requirementsĪre 25 PPM. Like most companies, your plant operates around 5 days a week, 50 weeks Say, you produce 10,000,000 parts per year for your customer. To calculate: For example, let's say you had 25 pieces defective in a shipment of 1,000 pieces. Now the rate for most automotive components is targeted at 25 PPM or 0.0025% ![]() ![]() There was a time when you were considered a pretty good supplier when your defect rate was less than 1%, (10,000 PPM), then the expectation was increased to 0.1% or 1,000 PPM. PPM (Parts per million) is a measurement used today by many customers to measure quality performance.ĭefinition: One PPM means one (defect or event) in a million or 1/1,000,000 ![]()
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