Requirements for the quality assurance program applicable to procurement for a nuclear power plant are contained in this standard and is the governing standard for procurement quality assurance activities. Procurement activities carried out by both the owner and participants designated by the owner is applicable and is addressed to the owner. It applies to the procurement of safety-related items and services during all constituent phases of the power plant's life, from design to decommissioning. By discretion of the owner it may be applicable to other items or services.