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Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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
Hardcopy , PDF
04-20-2012
English
03-15-1999
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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
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.
| Committee |
NCE/8
|
| DevelopmentNote |
Supersedes 97/711093 DC (06/2005)
|
| DocumentType |
Standard
|
| Pages |
36
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
| Standards | Relationship |
| IEC 61505:1998 | Identical |
| 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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