This document provides the comparison of the hazard analysis requirements between IAEA framework and NRC-IEEE framework of standards and guidance. The hazard analysis requirements in the different standards were compared with a set of comparison criteria@ including the safety principle@ the safety process@ the definitions@ the hazard analysis process@ etc. This document includes the comparison results of the HA requirements of the safety control systems of other safety industries in Annex C. For a nuclear power plant@ the design safety and operation safety shall be analyzed@ for example@ to meet the IAEA Safety Requirements for Design (SSR-2/1) and Operation (SSR-2/2). The scope of this document is to survey the state of the art in the hazard analysis for the design of IC system of NPPs. Figure 1 illustrates the scope of IC systems important to safety which have hazard analysis requirements@ in the form of a three by three matrix which is in IEEE 603-2009. This document covers the hazard analysis for the sense and command features of digital systems. This document also considers the requirements for hazard analysis of the system of systems(SoS)@ including the software@ hardware and human for the digital systems.