BSI 19/30400212 DC:2019 Edition
$13.70
BS IEC 61468. Nuclear power plants. Instrumentation systems important to safety. In-core instrumentation. Characteristics and test methods of self-powered neutron detectors
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 35 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms, definitions, symbols and abbreviated terms |
| 15 | 4 Self-powered neutron detectors general advantages 5 Composition and construction |
| 18 | 6 Application recommendations 6.1 General 6.2 Fluence rate mapping – core monitoring and surveillance 6.3 Power regulation – Feedback control 6.4 Core protection 6.5 Reactor noise analysis 6.6 Classification |
| 19 | 7 Design recommendations 7.1 General 7.2 Reproducibility of SPND characteristics 7.3 Background signal 7.4 Electrical interference noise 7.5 Lifetime 8 Test methods 8.1 General 8.2 Prototype testing |
| 20 | 8.3 Production tests 9 Detector calibration 9.1 Place of calibration 9.2 Absolute calibration 9.3 Comparison calibration |
| 21 | 9.4 In-core calibration 9.5 Calibration procedure 9.6 Recommended calibration periods |
| 22 | Annex A (informative) Self-powered detector principles and characteristics A.1 SPND response mechanisms A.2 Beta decay (delayed response) A.3 Neutron capture (prompt response) A.4 Photoelectric effect (prompt response) A.5 Compton effect (prompt response) A.6 Nature of SPND response |
| 23 | A.7 Thermal neutron interactions A.8 Gamma interactions A.9 Dynamic characteristics of SPND |
| 24 | A.10 Detector burn-up life A.11 Measurement errors A.11.1 General A.11.2 Error for determination of SPND actual response. |
| 25 | A.11.3 Error determined by gamma-component of SPND current A.11.4 Error determined by leakage currents |
| 26 | A.11.5 Error determined by signal wire current A.12 Self-powered detector operating characteristics A.12.1 General A.12.2 Vanadium emitter characteristics |
| 27 | A.12.3 Cobalt emitter characteristics A.12.4 Rhodium emitter characteristics A.12.5 Silver emitter characteristics A.12.6 Platinum emitter characteristics |
| 28 | A.12.7 Hafnia emitter characteristics A.13 Self-powered detector assemblies A.13.1 General A.13.2 Typical bottom-mounted rhodium self-powered detector assembly for pressurized light water reactors A.13.3 Typical top-mounted rhodium self-powered detector assembly for VVER–type light water reactors A.13.4 Typical top-mounted cobalt self-powered detector assembly for pressurized light water reactors |
| 29 | A.13.5 Typical heavy water reactor self-powered detector assembly |
| 35 | Bibliography |
