Nuclear power plants. Instrumentation and control systems important to safety. Software aspects for computer-based systems performing category A functions Ingestion-build-48024 • by legislative or regulatory

• by legislative or regulatory bodies

bacterial growth

Normally these products are used in lower-risk situations

and reference is not made to the details thereof in ISO 27306

if these two areas are standardized independently

Nuclear power plants. Instrumentation and control systems important to safety. Software aspects for computer-based systems performing category A functions Ingestion-build-48024 • by legislative or regulatory1 Scope and object This International Standard provides requirements for the software of computer based I&C systems of nuclear power plants performing functions of safety category A as defined by IEC 61226. According to the definition in IEC 61513, I&C systems of safety class 1 are basically intended to support category A functions, but may also support functions of lower categories. However the system requirements are always determined by the