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Essential Performance and Expected Service Life are two of the most misunderstood requirements in 60601-1, Third Edition standard. Here are some tips to help navigate these two topics.
Essential Performance and Expected Service Life are two of the most misunderstood requirements in 60601-1, Third Edition standard. Here are some tips to help navigate these two topics:
Essential Performance is best defined as performance functions that lead to an unacceptable risk or a risk in the As Low as Reasonably Practicable region. Translation: The testing houses are looking for a Risk Assessment to be completed on the all performance functions to determine which functions lead to essential performance that must be maintained through out the product safety testing.
Expected Service Life is a manufacturer defined term for how long the product will continue to be in compliance with the requirements of the standard. In particular the following all have a tie in to expected service life:
So for whatever expected service life picked for the product, proof needs to be provided to show that the above mentioned items will not fail for that period of time.
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Todd R. Konieczny, Assistant Chief Engineer, Intertek Americas Region