GB/Z 20288-2006 PDF in English
GB/Z 20288-2006 (GB/Z20288-2006, GBZ 20288-2006, GBZ20288-2006)
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General disassembly requirements for testing hazardous substances in electrical and electronic products
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GB/Z 20288-2006: PDF in English (GBZ 20288-2006) GB/Z 20288-2006
GB
NATIONAL STANDARDIZATION GUIDANCE TECHNICAL
DOCUMENTS OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 71.040
G 04
General disassembly requirements for testing hazardous
substances in electrical and electronic products
Issued on. June 20, 2006 [Translator note. There is no implementation date]
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of contents
Foreword ... 3
Introduction ... 4
1 Scope ... 5
2 Terms and definitions ... 5
3 Disassembly principle ... 6
4 Sampling ... 8
5 Disassembly steps and methods ... 8
6 Disassembly flow chart ... 9
APPENDIX A (Informative) Disassembly - General examples ... 10
APPENDIX B (Normative) Disassembly preparation and requirements ... 14
Foreword
It is proposed to divide this disassembly standard system into general
requirements and specific requirements for certain products, AND this guidance
technical document is for the general disassembly requirements for all electrical
and electronic products and their components.
Appendix A of this guidance technical document is an informative appendix,
and Appendix B is a normative appendix.
This guidance technical document was proposed by the National
Standardization Administration and the State Administration of Quality
Supervision, Inspection and Quarantine.
This guidance technical document shall be under the jurisdiction of the National
Electrical and Electronic Products and Systems Environmental Standardization
Working Group.
This guidance technical document is responsibly drafted by China Quality
Certification Center; AND the participating drafting organizations include.
Shimadzu Corporation, Shenzhen Center Testing International Group, Ltd.,
Haier Group, Motorola (China) Electronics Co., Ltd., Shenzhen Metrology &
Quality Inspection Institute, Nanjing Entry-Exit Inspection and Quarantine
Bureau, China CEPREI Laboratory, Ministry of Information Industry Telecom
Research Institute, China Electronic Technology Standardization Institute,
China Electrical Equipment Industry Association, China Tondar Certification &
Testing Technology Co., Ltd, Kunshan City Product Quality Supervision and
Inspection Institute.
The main drafters of this guidance technical document. Chen Wei, Dong
Yongsheng, Chen Zeyong, He Zhonghui, Luo Daojun, Yang Wanshan, Xing
Weibing, Zhou Min, Ye Xuemei, Xue Jian, Liu Jianyong, Jiang Wenbo, Wu
Wanguang, Liu Gonggui, Jiang Jingui, Liu Wei, Wang Huiling , Gao Huiming,
Wang Zheng.
General disassembly requirements for testing hazardous
substances in electrical and electronic products
1 Scope
This guidance technical document specifies general principles for the
disassembly of electrical and electronic products and their components and
materials.
The scope of application of this guidance technical document is electrical and
electronic products and their components and materials.
2 Terms and definitions
The following terms and definitions apply to this guidance technical document.
2.1
Electrical and electronic products
It refers to the products that rely on current or electromagnetic fields to
function properly AND are designed for use in equipment that generates,
transmits, AND measures such currents and magnetic fields at AC voltages
not exceeding 1000 V and DC voltages not exceeding 1500 V.
2.2
Hazardous substances
It refers to the chemical substances such as lead, mercury, cadmium,
hexavalent chromium, polybrominated diphenyl ethers and polybrominated
biphenyls, which may be hazardous to health and the environment, as
specified in relevant laws and regulations.
2.3
Mechanical disassembly
It refers to the process of effectively dividing and obtaining the testing unit
through mechanical means, including unscrewing, cutting, scraping,
extrusion and grinding. In this guidance technical document, it is abbreviated
as disassembly.
4 Sampling
4.1 When submitting the obtained homogeneous test unit for testing, it shall
take sample away from the connection part, AND select the test unit of larger
body for sampling.
4.2 As for the test units with a mass greater than 100 g or an area greater than
100 mm x 100 mm, it shall take samples from different locations, including at
least one geometric center point and two diagonal edge points.
4.3 When submitting the obtained non-homogeneous test unit for testing, it shall
make overall sampling as practical as possible.
5 Disassembly steps and methods
5.1 Disassembly of whole machine
As for the whole machine type electronic product which can independently
realize some functions, firstly DISASSEMBLE it into modules or components;
then in accordance with the requirements of 5.2 and 5.3, CONDUCT further
disassembly.
5.2 Disassembly of modules and components
As for the module or component type electrical and electronic products and
devices which are composed more than one element or mechanical component,
firstly DISASSEMBLE it into elements; then in accordance with the
requirements of 5.3, further DISASSEMBLE it into homogeneous material test
unit.
5.3 Disassembly of component
As for the element type products with a certain electrical and electronic function,
further DISASSEMBLE it into homogeneous material test unit.
5.4 Confirmation of homogeneous material
As for raw materials, such as polymer materials (without surface treatment),
metal materials (without surface treatment), auxiliary materials (solder, flux,
adhesives, inks, coatings), etc., they are considered as homogeneous material,
AND can be submitted directly for testing.
5.5 Disassembly of material after surface treatment
B.3.3 The part of the tool which is in direct contact with the disassembly object
shall be with component identification. During disassembly, it shall not use the
tools containing the element under testing to contact the disassembly object.
Note. Before put into use, it shall understand the contents of the relevant
substances in the tool.
B.4 Containers
The test unit after being disassembled shall be isolated and contained by
appropriate containers, AND preserved in room temperature and dry
environment. The container shall be kept clean.
B.5 Sample contamination protection
In the whole disassembly process, it shall fully assess the effect of such factors
as environment, tool, and operation, etc., onto the composition and content of
the relevant hazardous substance in the sample, AND take appropriate
measures to eliminate such effects OR otherwise minimize such effects.
B.6 Description of product before disassembly
Before disassembly, it shall use text or photographing, etc., to make appropriate
description and records of the product, AND keep such records.
B.7 Cleaning or decontamination, storage and transfer of samples
B.7.1 The sample may contain impurities such as dust, oil, etc. which may affect
the results of the test, so before disassembly, it shall conduct necessary
cleaning or decontamination; BUT the cleaning reagent and decontamination
method shall not change the sample composition.
B.7.2 Samples shall be stored for a specified period of time and under suitable
conditions.
B.7.3 The transfer of the sample shall be such that the composition is stable.
B.8 Recording and storage of the disassembly process
B.8.1 Requirements for documentation
The sample shall be uniquely identified, AND the disassembly procedure shall
be completely recorded, including the disassembly environment, the
disassembly device and the tool, the disassembly result, the sample
identification, and other relevant information requiring special records.
B.8.2 Record form
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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