GB/T 11807-2021 English PDFUS$559.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. 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: Historical versions
Basic dataStandard 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 forewordThis 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 procedures1 ScopeThis 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 referencesThe 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 DefinitionsThe 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": ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 11807-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 11807-2021_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 11807-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 11807-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
