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GB/T 11807-2021: Characteristics, design and operational procedures for acoustic monitoring systems of loose parts detection important to safety in nuclear power plants
Status: Valid GB/T 11807: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 11807-2021 | English | 559 |
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Characteristics, design and operational procedures for acoustic monitoring systems of loose parts detection important to safety in nuclear power plants
| Valid |
GB/T 11807-2021
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| GB/T 11807-2008 | English | 714 |
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Acoustic monitoring systems for loose parts detection -- Characteristics, design and operational procedures
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GB/T 11807-2008
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| GB/T 11807-1989 | English | 599 |
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Acoustic monitoring systems for loose parts detection--Characteristics, design and operational procedures
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GB/T 11807-1989
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PDF similar to GB/T 11807-2021
Basic data | Standard ID | GB/T 11807-2021 (GB/T11807-2021) | | Description (Translated English) | Characteristics, design and operational procedures for acoustic monitoring systems of loose parts detection important to safety in nuclear power plants | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F65 | | Word Count Estimation | 29,294 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 11807-2021: Characteristics, design and operational procedures for acoustic monitoring systems of loose parts detection important to safety in nuclear power plants
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Characteristics, design and operational procedures for acoustic monitoring systems of loose parts detection important to safety in nuclear power plants
ICS 27:120:10
CCSF65
National Standards of People's Republic of China
Replacing GB/T 11807-2008
Acoustic monitoring of loose parts important to safety in nuclear power plants
System characteristics, design and operating procedures
(IEC 60988:2009, Nuclearpowerplants-Instrumentationimportantto
2021-12-31 Released 2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Loose parts monitoring 2
4:1 Monitoring Purpose 2
4:2 General requirements 2
4:3 System Overview 3
5 System Requirements 3
5:1 Basic Construction and Design Criteria 3
5:2 Signal Acquisition 4
5:3 Signal Processing 5
5:4 Signal storage and signal display 6
5:5 Signal Monitoring 7
5:6 Calibration 9
6 Initial startup and operation 9
6:1 System tests prior to initial start-up of the reactor coolant pump 9
6:2 Initial monitoring without alarm thresholds 10
6:3 System Tuning 10
7 Supervision Outline 11
7:1 Overview 11
7:2 Reference record 11
7:3 Supervision during operation 11
7:4 Action after alarm 12
7:5 Periodic system test 12
8 File 13
Appendix A (Informative) Instructions and Typical Sound Signal Waveforms for Monitoring Loose Parts Using Sound Trajectories 14
Appendix B (informative) Description of each module of the functional block diagram 19
Appendix C (Informative) Example of a Digital Monitoring System for Loose Parts 20
Appendix D (Informative) Signal Evaluation Analysis 22
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents"
drafted:
This document replaces GB/T 11807-2008 "Characteristics, Design and Operational Procedures for Acoustic Monitoring Systems for Detecting Loose Parts", and
Compared with GB/T 11807-2008, in addition to structural adjustment and editorial changes, the main technical changes are as follows:
--- Modified the scope of the standard (see Chapter 1, Chapter 2 of the:2008 edition);
--- Added normative references (see Chapter 2);
--- Added the terms "alarm monitor", "monitoring signal", "known event" and their definitions (see 3:11, 3:12, 3:13);
--- Delete the terms "monitoring area", "foreign object", "frequency distribution of burst wave interval", "frequency distribution of burst wave amplitude", "system spirit"
"Sensitivity" "passband" and its definition (see 2:1, 2:2:3, 2:7, 2:8, 2:10, 2:11 of the:2008 edition);
--- Modified the terms and definitions "loose parts", "structure sound" and "noise floor" (see 3:1, 3:4, 3:6, 2:2, 2:3,:2008 edition)
2:5);
--- Modified the general description about loose parts monitoring (see Chapter 4, Chapter 3 of the:2008 edition);
--- Revised "Characteristics and design requirements of each functional unit of the monitoring system" (see Chapter 5, Chapter 4 of the:2008 edition);
--- Revised the relevant requirements of the initial start-up test (see Chapter 6, Chapter 5 of the:2008 edition);
--- Revised the relevant requirements of the supervision program (see Chapter 7, Chapter 6 of the:2008 edition);
--- Added the description of the loose parts monitoring system in the document requirements [see Chapter 8 a)];
This document is modified to adopt IEC 60988:2009 "Acoustic monitoring systems for detecting loose parts of instruments important to safety in nuclear power plants: Characteristics,
Design Criteria and Operating Procedures:
This document has been structurally adjusted compared to IEC 60988:2009:
---3:1~3:13 correspond to 3:9, 3:7, 3:10, 3:18, 3:16, 3:3, 3:17, 3:14, 3:15, 3:6, 3:2,
3:11, 3:8;
---Divided some clauses of IEC 60988:2009:
The technical differences between this document and IEC 60988:2009 and their reasons are as follows:
--- In order to meet the requirements of the preparation of Chinese standards, the scope of the standard has been revised:
--- Regarding normative reference documents, this document has made adjustments with technical differences to adapt to the technical conditions of our country and the circumstances of the adjustment:
The situation is reflected in Chapter 2 "Normative References", and the specific adjustments are as follows:
● Replacing IEC 61226 with GB/T 15474 modified to adopt international standards (see 5:1:2);
● Replace IEC 61513 (see 5:1:2) with NB/T:20026 modified to adopt international standards:
--- In order to meet the compilation requirements of Chinese standards, the terms "burst wave interval distribution" and "burst wave amplitude" in IEC 60988:2009 are deleted:
Distribution", "Single Channel Alarm Suppression", "Adaptive Resonance Frequency", "Resonance Factor" and their definitions:
--- Put some annotations of IEC 60988:2009 in the text:
The following editorial changes have been made to this document:
--- In order to harmonize with existing standards, the name of the standard is changed to "Characteristics, design and
Operating Procedures":
Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed and managed by the National Standardization Technical Committee of Nuclear Instrumentation (SAC/TC30):
This document is drafted by: Institute of Nuclear Industry Standardization, China Nuclear Power Research and Design Institute:
The main drafters of this document: Du Jian, Jiang Tianzhi, Jiao Liling, Shen Feng, Liu Caixue, Wang Jiajun, Wang Gensheng:
The previous versions of the documents replaced by this document are as follows:
---First published in 1989 as GB/T 11807-1989, first revised in:2008;
---This is the second revision:
Acoustic monitoring of loose parts important to safety in nuclear power plants
System characteristics, design and operating procedures
1 Scope
This document specifies the characteristics, design requirements and operating procedures of acoustic monitoring systems for loose components of nuclear power plant reactor coolant systems:
This document applies to the design and operation of a monitoring system for loose parts of a reactor coolant system:
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document:
GB/T 15474 Classification of instrumentation and control functions important to safety in nuclear power plants (GB/T 15474-2010, IEC 61226:2005,
MOD)
NB/T:20026 General requirements for instrumentation and control systems important to safety in nuclear power plants (NB/T:20026-2014, IEC 61513:2011,
MOD)
3 Terms and Definitions
The following terms and definitions apply to this document:
3:1
loosepart
A collective term for fallen parts, loose parts and residues during construction, refuelling and maintenance of nuclear power plants:
3:2
detachedpart
A component that has lost connection to a component within the pressure boundary of the reactor coolant and thus can be carried by the reactor coolant:
3:3
loose parts loosenedpart
A part that has been loosened but remains connected to the original fixed part:
3:4
structure-bornesound
Sounds with frequencies in the audible range propagating on the surface of metal structures:
3:5
sound sensor
A transducer that converts a mechanical signal to an electrical signal and receives sound at the outer surface of the reactor coolant pressure boundary, which is assisted by a bit
motion, velocity or acceleration detection:
Note: Sound sensors in this document refer to sensors that detect "structure sound":
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