This Safety Guide provides recommendations and guidance on the possible format and content of safety analysis reports (SARs) to be developed in support of requests to regulatory bodies for authorization to construct and/or to operate a nuclear power plant. As such, this Safety Guide recommends how to meet the requirements for preparation of adequate safety demonstrations as established in IAEA Safety Standards Series No. GS-R-1, Safety Requirements on Legal and Governmental Infrastructure for Nuclear, Radiation, Radioactive Waste and Transport Safety, and complements IAEA Safety Standards Series No. NS-G-1.2, Safety Guide, Safety Assessment and Verification of Nuclear Power Plants.