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  • BS IEC 61505:1998

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    Nuclear reactor instrumentation. Boiling water reactors (BWR). Stability monitoring

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  20-04-2012

    Language(s):  English

    Published date:  15-03-1999

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    1 Scope and object
    2 Normative references
    3 Terms and definitions
    4 Abbreviations
    5 Physics, measurement and analyses of instabilities
    5.1 Physics of BWR core instabilities
    5.2 Possible consequences of core instabilities
    5.3 Measuring principles
    5.4 Analysis methods
    6 Functional requirements
    6.1 On-line monitoring
    6.2 Off-line monitoring
    6.3 Man-machine interface
    6.4 Response time
    6.5 Accuracy
    6.6 Robustness
    7 Safety classification
    8 Technical requirements
    8.1 Data acquisition system
    8.2 Data processing and operator interface system
    8.3 Hardware (HW)
    8.4 Software (SW)
    9 Verification and validation
    10 Testing and maintenance
    11 Qualification and documentation

    Abstract - (Show below) - (Hide below)

    Applicable to boiling water reactors (BWR) designed to ensure that thermal-hydraulic oscillations are either not possible, or can be reliably and readily detected and suppressed. Compliance can be shown by: a. preventing power oscillations; b. detecting and automatically suppressing power oscillations; Monitoring of the reactor stability state, which is the object of this standard, can support a. and b. providing information on plant stability characteristics. Checking will show the approach to and occurrence of oscillations.

    General Product Information - (Show below) - (Hide below)

    Committee NCE/8
    Development Note Supersedes 97/711093 DC (06/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 61226:2009 Nuclear power plants - Instrumentation and control important to safety - Classification of instrumentation and control functions
    IEC 60980:1989 Recommended practices for seismic qualification of electrical equipment of the safety system for nuclear generating stations
    IEC 61343:1996 Nuclear reactor instrumentation - Boiling light water reactors (BWR) - Measurements in the reactor vessel for monitoring adequate cooling within the core
    IEC 60987:2007+AMD1:2013 CSV Nuclear power plants - Instrumentation and control important to safety - Hardware design requirements for computer-based systems
    IEC 61227:2008 Nuclear power plants - Control rooms - Operator controls
    IEC 61771:1995 Nuclear power plants - Main control-room - Verification and validation of design
    IEC 60880:2006 Nuclear power plants - Instrumentation and control systems important to safety - Software aspects for computer-based systems performing category A functions
    IEC 60780:1998 Nuclear power plants - Electrical equipment of the safety system - Qualification
    IEC 60557:1982 IEC terminology in the nuclear reactor field
    IEC 61225:2005 Nuclear power plants - Instrumentation and control systems important to safety - Requirements for electrical supplies
    IEC 60964:2009 Nuclear power plants - Control rooms - Design
    IEC 60050-393:2003 International Electrotechnical Vocabulary (IEV) - Part 393: Nuclear instrumentation - Physical phenomena and basic concepts
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