This standard contains the requirements for the design@ installation@ and qualification of raceway systems for Class 1E circuits external to electric equipment and components for nuclear power generating stations. Since aging and radiation have no known detrimental effects upon metallic raceway systems@ and since nonmetallic raceway systems are limited to underground or embedded applications@ these two environmental conditions are not considered in this document. The embedments or structural members to which a support is attached are beyond the scope of this document. Purpose The purpose of this standard is to provide criteria for the minimum requirements in the selection@ design@ installation@ and qualification of raceway systems for Class 1E circuits for nuclear power generating stations. It also prescribes methods for the structural qualification of raceway systems for Class 1E circuits.