GB/T 28426-2021 English PDF

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GB/T 28426-2021: Rail heavy-duty maintenance machinery - Rail flaw detection vehicle
Status: Valid

GB/T 28426: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28426-2021	289	Add to Cart	3 days	Rail heavy-duty maintenance machinery - Rail flaw detection vehicle	Valid
GB/T 28426-2012	679	Add to Cart	4 days	Rail flaw detection vehicle	Obsolete

Similar standards

TB/T 2340   GB/T 25330   GB/T 25336   

Basic data

Standard ID: GB/T 28426-2021 (GB/T28426-2021)
Description (Translated English): Rail heavy-duty maintenance machinery - Rail flaw detection vehicle
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: S22
Word Count Estimation: 14,12
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 28426-2021: Rail heavy-duty maintenance machinery - Rail flaw detection vehicle

---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.
Rail heavy-duty maintenance machinery -- Rail flaw detection vehicle ICS 45:120 CCSS22 National Standards of People's Republic of China Replaces GB/T 28426-2012 Large-scale railway maintenance machinery rail flaw detection vehicle Published on 2021-12-31 2022-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Conditions of use 2 5 Technical requirements 2 6 Inspection and test methods 4 7 Inspection rules 5 8 Marking, packing and transportation of the whole machine 7 Appendix A (Informative) Test Line Artificial Damage Layout and Dimensions 8

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 28426-2012 "Large Ultrasonic Rail Flaw Detection Vehicle", compared with GB/T 28426-2012, except for editorial The main technical changes outside the modification are as follows: a) Changed the definition of the term "rail flaw detection vehicle" (see 3:1, 3:1 of the:2012 edition); b) The terms and definitions of "artificial damage detection" and "damage false alarm" were deleted (see 3:2 and 3:3 of the:2012 edition); c) Added the terms and definitions of "echo pattern", "detection", "fixed echo" and "false alarm" (see 3:2, 3:3, 3:4, 3:5); d) The conditions of use such as environment and lines have been changed (see 4:1, 4:2, 4:1 and 4:2 of the:2012 edition); e) The technical requirements such as the maximum self-running speed and the maximum flaw detection speed of the whole vehicle have been changed (see 5:1, 4:3 and 5:1 of the:2012 edition); f) Changed the technical requirements for the backup system of the power transmission system, fuel tank capacity, etc: (see 5:2:1, 5:2 of the:2012 edition); g) Changed the technical requirements for bogies, axle gearboxes and braking devices in the running system (see 5:2:2, 5:5 of the:2012 edition); h) Changed the oil temperature requirements after continuous operation of the hydraulic system and the requirements for the external air supply and intake interface of the pneumatic system (see 5:2:3,:2012 5:9 of the year edition); i) Changed the performance requirements of the brake used in the air brake system (see 5:2:4, 5:6 of the:2012 edition); j) Changed the technical requirements for electrical system installation and wiring, electromagnetic compatibility (see 5:2:5, 5:7 of the:2012 edition); k) Changed the requirements for non-destructive testing of important welds of the main frame of the car body (see 5:2:6, 5:3 and 5:4 of the:2012 edition); l) Changed the noise-related requirements of the driver's cab and the flaw detection operating room (see 5:2:7, 5:4 of the:2012 edition); m) Changed the assembly requirements of the coupler buffer device, the height of the coupler center from the rail surface, etc: (see 5:2:8, 5:3 of the:2012 edition); n) Changed the requirements for the setting position and illuminance value of lighting devices (see 5:2:9, 5:8 of the:2012 edition); o) The technical requirements for classification and anti-corrosion of water supply devices have been changed (see 5:2:10, 5:10 of the:2012 edition); p) Changed the safety requirements for the probe support mechanism and the functional requirements for coupling water and rim water spraying (see 5:3:1,:2012 edition of 5:11:2); q) The probe centering system (see 5:3:2) and safety alarm device (see 5:4) are added; r) Changed the technical requirements such as the average damage false alarm rate of the ultrasonic inspection system (see 5:3:3, 5:11:3 of the:2012 edition); s) Delete the ultrasonic transducer requirements (see 5:11:1 of the:2012 edition); t) The inspection and test methods of operational performance tests and operational performance tests have been changed (see Chapter 6, Chapter 6 of the:2012 edition); u) Changed the inspection rules for complete vehicle, component performance and operating performance (see Chapter 7, Chapter 7 of the:2012 edition): 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 under the jurisdiction of the State Railway Administration: This document is drafted by: Infrastructure Testing Institute of China Academy of Railway Sciences Group Co:, Ltd:, China Academy of Railway Sciences Group Co:, Ltd: Group Co:, Ltd: Institute of Standards and Metrology, Golden Eagle Heavy Construction Machinery Co:, Ltd:, China Railway Research Institute Group Co:, Ltd: Metal and Institute of Chemistry, Baoji CRRC Times Construction Machinery Co:, Ltd: The main drafters of this document: Shi Yongsheng, Zhang Yuhua, Ning Yingzhi, Chen Bin, Gao Donghai, Ma Yunzhong, Li Pei, Zhong Yanchun, Xiong Longhui, Zhang Yajun, Luo Haibo, Zhu Hongjun, Li Hongliang: The previous versions of this document and its superseded documents are as follows: ---First published in:2012 as GB/T 28426-2012; ---This is the first revision: Large-scale railway maintenance machinery rail flaw detection vehicle

1 Scope

This document specifies the operating conditions, technical requirements, inspection and test methods, inspection rules, marking, packaging and transportation: This document applies to the use of ultrasonic technology rail flaw detection vehicles (hereinafter referred to as "flaw detection vehicles") used on 1435mm gauge railways: Design, manufacture and inspection: Flaw detection vehicles for non-standard gauge railways can be implemented by reference:

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 17426 Railway special vehicle and rail mechanical dynamic performance evaluation and test method GB/T 25336-2018 Inspection and test methods for large railway maintenance machinery GB/T 25337-2018 General technical conditions for large-scale railway maintenance machinery

3 Terms and Definitions

The following terms and definitions apply to this document: 3:1 Railflawdetectionvehicle A large-scale road maintenance machine equipped with a rail flaw detection device that can detect and record rail defects during operation: 3:2 echo pattern ultrasooundechoB_scanpattern B-mode graphic display of ultrasonic reflection echoes: 3:3 Check out detection Man-made or natural injuries are identified: 3:4 fixed echo fixedultrasoundechoB_scanpattern A repeatable non-artificial damage echo pattern at a certain position on the test line: 3:5 false alarm falsealarm Identified non-artificial damage or non-natural damage echo patterns, excluding fixed echoes: 3:6 Artificial damage detection rate detectionrate In a test of the test line, the ratio of the number of artificial damages detected to the actual number of artificial damages: 3:7 Damage false alarm rate falsealarmrate The ratio of the number of false alarms to the number of artificial damages actually set in a test of the test line: ......

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