• BS IEC 62385:2007

    Current The latest, up-to-date edition.

    Nuclear power plants. Instrumentation and control important to safety. Methods for assessing the performance of safety system instrument channels

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-07-2007

    Publisher:  British Standards Institution

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

    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Requirements for performance verification of process
      instruments
      4.1 Background
      4.2 General requirements
      4.3 Testing environment
      4.4 Test interval
      4.5 Test location
      4.6 Calibration of measurement and test equipment
      4.7 Test results
      4.8 Validation of test methods
      4.9 Qualifications of test personnel
    5 Acceptable means for instrument performance verification
      5.1 Introduction
      5.2 Calibration
      5.3 Channel checks
      5.4 Functional test
      5.5 Response time testing
    6 Methods to verify instrument calibration
      6.1 General considerations
      6.2 Cross-calibration (cross-validation) method
      6.3 On-line calibration monitoring
          6.3.1 Introduction
          6.3.2 Principle of on-line calibration monitoring
          6.3.3 Data acquisition requirements
          6.3.4 Data qualification and data analysis requirements
          6.3.5 Accounting for common mode drift
          6.3.6 Data collection frequency
    7 Methods for response time testing
      7.1 Response time testing of pressure transmitters
          7.1.1 Ramp test
          7.1.2 Noise analysis technique
          7.1.3 Power interrupt (PI) test
      7.2 Response time testing of temperature sensors
          7.2.1 Plunge test
          7.2.2 LCSR test
          7.2.3 Self-heating test
          7.2.4 Noise analysis
    8 On-line detection of blockages and voids in pressure
      sensing lines
    9 Verifying the performance of neutron detectors
    Annex A (informative) RTD cross-calibration/cross-validation
    Annex B (informative) On-line calibration monitoring
    Annex C (informative) Response time testing techniques for
                          pressure transmitters and neutron
                          detectors
    Annex D (informative) Response time testing techniques for
                          RTDs
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines the requirements for demonstrating acceptable performance of safety system instrument channels through response time testing, calibration verification, and other means.

    Scope - (Show below) - (Hide below)

    Defines the requirements for demonstrating acceptable performance of safety system instrument channels through response time testing, calibration verification, and other means. The same requirements may be adopted for demonstrating the acceptable performance of non-safety systems and other instrument channels.

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

    Committee NCE/8
    Development Note Supersedes 05/30102528 DC. (07/2007) Reviewed and confirmed by BSI, September 2013. (08/2013)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

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

    IEC 61224:1993 Nuclear reactors - Response time in resistance temperature detectors (RTD) - In situ measurements
    IEC 62397:2007 Nuclear power plants - Instrumentation and control important to safety - Resistance temperature detectors
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