³Ô¹Ïtv / TESTING AND PROTECTIONReliability work connects exposure to a mechanismObserved exposure / symptomMechanism and alternativesControlled verificationDefine measured and assumedmission conditionsInvestigate the relevant failuremechanismControl the construction orprocess changeVerify the change withoutinventing a lifetimeExplanatory schematic / not an inspection record or released drawing