IEC 61504 pdf download – Nuclear power plants – Instrumentation and control systems important to safety – Plant-wide radiation monitoring

IEC 61504 pdf download – Nuclear power plants – Instrumentation and control systems important to safety – Plant-wide radiation monitoring
1 Scope and object
This International Standard provides guidance on the design principles and performancecriteria for computer-based radiation monitoring systems (RMS). Such systems are providedto integrate the monitoring of plant-wide processes, effluent streams,and area radiation.
This standard describes the integration of functions including equipment such as thosedescribed in standards lEC 60761-1, IEC 60761-2,IEC 60761-3,IEC 60761-4,IEC 60761-5,IEC 60768,IEC 60910, IEC 60951-1 IEC 60951-2, IEC 60951-3, IEC 60951-4,IEC 60951-5，IEC 61031, and lEC 61250 into a plant-wide digital system.The requirements of system-levelcomponents (central computer，’subsystem computers，operator consoles，and inter-connections) are discussed.For detection assemblies,processing units and alarm units， thisstandard contains only the requirements needed to allow connection into the centralizedsystem. The standards referenced above contain the specific requirements for thesecomponents.
This standard provides criteria for the interface between monitors of different safety classes.This standard integrates data processing,storage, optimization, and correlation of data flowand displays.
This standard defines the communication criteria to link distributed radiation monitoringequipment in the plant with an open architecture configuration.This standard does not applyto the design and testing of detection and measurement assemblies and subassembliesexcept as necessary to define the interface with the plant-wide system.
Certain RMS functions, or a complete centralized radiation monitoring system may be entirelyimplemented with direct-connected analogue/relay technology. This standard does not applyto such functions or systems.
2Normative references
The following normative documents contain provisions which，through reference in this text,constitute provisions of this International ‘Standard. For dated references,subsequentamendments to，or revisions of,any of these publications do not apply. However，parties toagreements based on this International Standard are encouraged to investigate the possibilityof applying the most recent editions of the normative documents indicated below.For undatedreferences, the latest edition of the normative document referred to applies.Members of lECand lso maintain registers of currently valid lnternational Standards.
IEC 60050(393):1996,International Electrotechnical Vocabulary (IEV) – Chapter 393:Nuclearinstrumentation – Physical phenomena and basic concepts
IEC 60050(394):1995,International Electrotechnical Vocabulary (IEV) – Chapter 394:Nuclearinstrumentation – instruments