SN 29500 Standard provides frequently updated failure rate data at reference conditions and stress models necessary for parts count and parts stress predictions. The reference conditions adopted are typical for the majority of applications of components in equipment.
Under these circumstances the SN29500 standard are used as a basis for conversion of the failure rate data at reference conditions to the actual operating conditions in the case that operating conditions differ significant from reference conditions.
To an increasing degree, customers require demonstration of reliability calculations for the products. The failure rate is the most frequently used characteristic in determining the reliability of subassemblies and units of equipment.
The component failure rates specified in the individual parts of the SN29500 standard are used by Siemens AG and the Siemens companies as a uniform basis for reliability predictions.
This standard also contains the underlying conditions for which the component failure rates apply (reference conditions). Reference to such conditions is needed when failure rates are stated or when values from different sources are compared.
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The basis for the definition of the reference conditions and the conversion models for failure rates depending on the stress conditions is the lEC 61709. The stress models described in this standard are used as a basis for conversion of the failure rate data at reference conditions to the actual operating conditions.
ALD Reliability & Safety Software RAM Commander is fully comply with standard SN 29500.
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