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Chinese Standard: 'GBZ37150-2018'
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GB/Z 37150-2018
ICS 33.100
L 06
Guide of Risk Assessment of EMC Reliability
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 Purpose and Role of EMC Risk Assessment ... 5
4.1 Overview ... 5
4.2 Purpose and role ... 5
5 EMC Risk Assessment Objects ... 6
6 Risk Criteria ... 6
7 EMC Risk Assessment Process ... 7
7.1 Overview ... 7
7.2 Identifying environmental information ... 8
7.3 Risk identification ... 9
7.4 Risk analysis ... 10
7.5 Risk assessment ... 12
8 Risk Assessment Tools ... 12
9 Risk Assessment Report Requirements ... 13
Appendix A (Informative) EMC Risk Management ... 14
Appendix B (Informative) Example of Assessment Tools of EMC Risk
Assessment ... 18
Bibliography ... 21
Guide of Risk Assessment of EMC Reliability
1 Scope
This technical guidance document gives guidelines on the purpose and role of risk
assessment of electromagnetic compatibility (hereinafter referred to as “EMC”), risk
assessment tarts, risk criteria, risk assessment processes, risk assessment tools, risk
assessment reporting requirements.
This technical guidance document is applicable to guide the selection of appropriate
EMC risk assessment techniques; so that assess the EMC risk of at the levels of
equipment, system and engineering site.
This technical guidance document does not cover all techniques for EMC and risk
assessment; the techniques not described here do not mean it is invalid.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 4365-2003 Electrotechnical Terminology - Electromagnetic Compatibility
GB/T 23694-2013 Risk Management - Vocabulary
3 Terms and Definitions
For the purpose of this document, the terms and definitions given in GB/T 4365-2003
and GB/T 23694-2013 and the following apply.
3.1 Risk assessment
The whole process of risk identification, risk analysis and risk assessment.
3.2 Risk level
The levels of risk assessment elements when making the risk assessment.
The main roles of EMC risk assessment include:
--- Identify the EMC risk and potential impact under specific tarts of equipment,
system or engineering site;
--- Increase understanding of EMC risk to facilitate the correct selection of risk
response strategies;
--- Identify the major factors that contribute to EMC risk and the weak links of EMC
risk in equipment, system or engineering site;
--- Analyze the EMC risk and uncertainties;
--- Conducive to establish design principles;
--- Help to determine whether the EMC risk is acceptable;
--- Conducive to prevent EMC problems through additional measures;
--- May be used as an input to risk management, and may be effectively linked to
other components of the risk management process.
5 EMC Risk Assessment Objects
EMC risk assessment may, according to different objects, be divided into equipment
level, system level and engineering site level. The specific technical indicators as the
assessment targets include the single, multiple or full EMC indicators of equipment,
system and site.
Equipment-level EMC risk assessment applies to the specific equipment (such as
laptops, automotive parts, etc.); it shall assess the EMC risks facing the equipment
structure and circuit board.
System-level EMC risk assessment applies to the system (for instance, complete
vehicle, etc.) consists of the products; it shall assess the EMC risks facing product itself
or inter-product in the system.
Engineering-site-level EMC risk assessment applies to the engineering site; it shall
assess the EMC risks facing the complicated application environment, installation
conditions and inter-system on the site.
6 Risk Criteria
EMC risk criteria are criteria for assessing the importance of the risk. Therefore, the
The method for EMC risk analysis may be qualitative, semi-quantitative, quantitative
or a combination of the above. The level of details required for EMC risk......
Related standard:   GB/T 38659.1-2020  GB/T 38889-2020
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