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BS IEC 60671 : 2007

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

NUCLEAR POWER PLANTS - INSTRUMENTATION AND CONTROL SYSTEMS IMPORTANT TO SAFETY - SURVEILLANCE TESTING

Available format(s)

Hardcopy , PDF

Superseded date

10-31-2011

Language(s)

English

Published date

01-01-2007

INTRODUCTION
1 Scope
2 Normative References
3 Terms and definitions
4 Basic Principles for Surveillance Testing
  4.1 General
  4.2 Gradation of Requirements Based on Category
  4.3 Extent of Surveillance Testing
  4.4 Self-supervision in Lieu of Periodic Testing
  4.5 Continuous Operation in Lieu of Periodic Testing
5 General Requirements for Surveillance Testing
  5.1 Design Requirements
  5.2 Procedures
  5.3 Data to be recorded upon detection of a fault
  5.4 Other data to be recorded
  5.5 Test intervals
  5.6 Verification of actuation set-points
  5.7 Bypass
  5.8 Response time
  5.9 Restoration
6 Requirements for Testing of Sensors and Signal Processing
  Devices
  6.1 General
  6.2 Non-tested parts
  6.3 Testing devices
  6.4 Signals
  6.5 Variation of signals
       6.5.1 General
       6.5.2 Slowly changing signal
       6.5.3 Rapidly changing signal
       6.5.4 Large change in signal
  6.6 Operability
  6.7 Sensor response time
  6.8 Testing equipment
  6.9 Calibration and transfer function
  6.10 Surveillance
7 Requirements for Testing of Electromechanical Equipment
  7.1 General
  7.2 Interface
  7.3 Typical functional tests
  7.4 Continuous monitoring
  7.5 Relays and valves
8 Requirements for Testing of Logic Assemblies
  8.1 Scope
  8.2 General
  8.3 Switching of signals
  8.4 Testing signals
  8.5 Interface
  8.6 Data to be displayed
  8.7 Data to be recorded
  8.8 Detailed display
  8.9 Testing equipment
  8.10 Testing equipment using pulses
9 Self-supervision in computer-based I&C systems
  9.1 Coverage of self supervision
  9.2 Balance of diagnostic versus functional processing
  9.3 Watchdog timers
  9.4 Action taken on detected fault
  9.5 Categorization of self-supervision software

Specifies principles for testing I&C systems performing category A, B and C functions, per IEC 61226, during normal power operation and shutdown, so as to check the functional availability especially with regard to the detection of faults that could prevent the proper operation of the functions important to safety.

Committee
NCE/8
DevelopmentNote
Renumbered and superseded by BS EN 60671. (10/2011)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

Standards Relationship
IEC 60671:2007 Identical

IEC 61226:2009 Nuclear power plants - Instrumentation and control important to safety - Classification of instrumentation and control functions
IEC 62138:2004 Nuclear power plants - Instrumentation and control important for safety - Software aspects for computer-based systems performing category B or C functions
IEC 60987:2007+AMD1:2013 CSV Nuclear power plants - Instrumentation and control important to safety - Hardware design requirements for computer-based systems
IEC 60880:2006 Nuclear power plants - Instrumentation and control systems important to safety - Software aspects for computer-based systems performing category A functions

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