2025-5-17 18.97.9.174
Code of China Chinese Classification Professional Classification ICS Classification Latest News Value-added Services

Position: Chinese Standard in English/GBZ 2.1-2019
GBZ 2.1-2019   Occupational exposure limits for hazardous agents in the workplace— Part 1: Chemical hazardous agents (English Version)
Standard No.: GBZ 2.1-2019 Status:superseded remind me the status change

Email:

Language:English File Format:PDF
Word Count: 21500 words Price(USD):480.0 remind me the price change

Email:

Implemented on:2020-4-1 Delivery: via email in 1 business day
,,
Standard No.: GBZ 2.1-2019
English Name: Occupational exposure limits for hazardous agents in the workplace— Part 1: Chemical hazardous agents
Chinese Name: 工作场所有害因素职业接触限值 第1部分:化学有害因素
Chinese Classification: C52    Labor sanitation
Professional Classification: GB    National Standard
Issued by: National Health Comission
Issued on: 2019-08-27
Implemented on: 2020-4-1
Status: superseded
Superseded by:GBZ 2.1-2019/XG1-2022 Occupational exposure limits for hazardous agents in the workplace — Part 1: Chemical hazardous agents
GBZ 2.1-2019/XG2-2024 Occupational exposure limits for hazardous agents in the workplace― Part 1: Chemical hazardous agents
Superseded on:2025-5-1
Superseding:GBZ 2.1-2007 Occupational exposure limits for hazardous agents in the workplace Part1:Chemical hazardous agents
Language: English
File Format: PDF
Word Count: 21500 words
Price(USD): 480.0
Delivery: via email in 1 business day
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. The occupational exposure limits given in Tables 1 to 3 in the text of this standard are compulsory, while the rest and those given in Table 4 are recommendatory. This standard is developed in accordance with Law of the People's Republic of China on Prevention and Control of Occupational Diseases. GBZ 2 Occupational exposure limits for hazardous agents in the workplace consists of the following two parts under the general title: ——Part 1: Chemical hazardous agents; ——Part 2: Physical agents. This part is Part 1 of GBZ 2. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part replaces GBZ 2.1-2007 Occupational exposure limits for hazardous agents in the workplace - Part1: Chemical hazardous agents. In addition to editorial changes, the following main technical changes have been made with respect to GBZ 2.1-2007. ——six normative references, i.e., GBZ/T 300, GBZ/T 192, GBZ/T 295, GBZ/T 224, GBZ/T 225 and GBZ/T 229.2, are added; ——nine concepts or definitions with regard to occupational exposure are added, terms in five normative references are deleted, and PE is introduced to replace the excursion limits; ——occupational exposure limits for 28 chemical hazardous agents that has been developed and revised in recent years are summarized and added. ——Chinese or English names and CAS Nos of eight chemical substances are adjusted; ——sensitization labels for 16 substances, skin labels for four substances, and carcinogenicity labels for 14 substances are added, and carcinogenicity labels for seven substances are adjusted; ——exposure limits for nitric oxide are incorporated into those for nitrogen dioxide; ——adverse health effects that are based during establishment of the exposure limits are clearly listed; ——biological limit values for occupational exposure (biological monitoring indexes and exposure limits) are added in Clause 4 “hygienic requirements”, and the released standard biological limit values for occupational exposure in the health industry and their determination methods are confirmed, and 28 biological monitoring indices and exposure limits are summarized and listed. 13 biological limit values for occupational exposure approved in recent years as well as quality requirements for biological material determination and biological monitoring are added; ——relevant requirements for monitoring and determination methods are further improved. For PC-TWA of total dust and respirable dust, it is specified that priority is given to the determination of TWA of the respirable dust; ——control principles and requirements for chemical hazardous agents in the workplace are added. ——Annex B is added, and information about chief drafting organizations and chief drafters of newly-added limits is given; ——Instructions for correct use of Annex A are further refined and improved. The control principles, key points and action levels of occupational exposure to hazardous agents, classification and control of occupational exposure levels, level-to-level management principles for hazardous operation of occupational diseases, etc., are added, and some contents in Annex A “Instructions for correct use” to the former standard have been revised into the text of the standard. The previous editions of this part are as follows: ——GBZ 2-2002; ——GBZ 2.1-2007. Occupational exposure limits for hazardous agents in the workplace - Part 1: Chemical hazardous agents 1 Scope This part specifies the hygiene requirements, determination, evaluation and control principles for occupational exposure to chemical hazardous agents in the workplace. This part is applicable to the hygienic design of industrial enterprises, as well as the management, control and occupational health supervision and inspection of occupational exposure to chemical hazardous agents in the workplace. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GBZ 1 Hygienic standards for the design of industrial enterprises GBZ 159 Specifications of air sampling for hazardous substances monitoring in the workplace GBZ/T 160(all parts) Methods for determination of toxic substances in the air of workplaces GBZ/T 192(all parts) Determination of dust in the air of workplaces GBZ/T 224 Terms of occupational health GBZ/T 225 Guideline for employer of prevention and control of occupational diseases GBZ/T 229.2 Classification of occupational hazards at workplaces - Part 2: Occupational exposure to chemicals GBZ/T 295 General principles of biological monitoring method in occupational population GBZ/T 300(all parts) Methods for determination of toxic substances in the air of workplaces 3 Terms, definitions and abbreviations For the purposes of this document, the terms and definitions established in GBZ/T 224 and the following ones apply. 3.1 chemical hazardous agents the chemical hazardous agents mentioned in this part include chemical substances, dust and biological agents existing in or arising from the workplace 3.2 occupational exposure the process that workers are exposed to occupational hazardous agents through respiratory tract, skin and mucosa in their occupational activities 3.3 adverse health effects hazardous health efforts or toxic effects of the organism arising from the exposure to occupational hazardous agents. Only a certain level of exposure, i.e. excessive exposure, can cause health damage 3.4 critical adverse health effects the adverse health effects that are used to determine the permissible exposure concentration of certain occupational hazardous agent, i.e. the adverse health effects that are based during the determination of the occupational exposure limits 3.5 occupational exposure limits; OELs the permissible exposure level that the workers are repeatedly exposed to one or more occupational hazardous agents for a long time in their occupational activities, which will not cause adverse health effects on the vast majority of exposed persons. The occupational exposure limits of chemical hazardous agents can include three categories, i.e., permissible concentration-time weighted average, permissible concentration-short term exposure limit and maximum allowable concentration Note: it is a revision of Definition 5.1 in GBZ/T 224-2010. 3.5.1 permissible concentration-time weighted average; PC-TWA the average permissible exposure concentration for 40 h per work week (8 h per working day), specified with time as the weight 3.5.2 permissible concentration-short term exposure limit; PC-STEL the weighted average concentration that allows the workers to be exposed for a short time (15 min), provided that the measured average exposure concentration for 40 h per work week (8 h per working day) meets the requirements of PC-TWA Note: it is a revision of Definition 5.3 in GBZ/T 224-2010. 3.5.3 maximum allowable concentration; MAC the concentration that any chemical hazardous agent shall not exceed within any working day, at any time and at any workplace Note: it is a revision of Definition 5.2 in GBZT 224-2004. 3.6 peak exposures; PE the maximum or peak concentration of a specific substance in the air determined in the shortest analyzable duration (no more than 15 min). For the chemical hazardous agents with PC-TWA but whose PC-STEL has not been established, peak exposures shall be used to control short-time contact. The maximum exposures of PC-TWA is allowed to be exceeded during any short time (15 min) within one working day 3.7 exposure level the concentration or intensity of workers' actual exposure to occupational hazardous agents in the workplace in a specific period of time during their occupational activities, which is detected by a standard determination method Note: it is a revision of Definition 2.22 in GBZ/T 224-2010. 3.8 ratio of occupational exposure level to OELs the ratio of the actual exposure level of workers to certain occupational hazardous agents, to the corresponding occupational exposure limits of the agents When workers are exposed to more than two kinds of chemical hazardous agents, the sum of the measured values of chemical hazardous agents and their corresponding occupational exposure limits is called the ratio of mixed exposure 3.9 action level the workers’ actual exposure level to chemical hazardous agents at which the employers are required to take control measures or actions such as occupational exposure monitoring, occupational health monitoring, occupational health training, and occupational hazard notification, also called administration level or administration concentration The action level of a chemical hazardous agent varies with the workplace environment and the hazardous agents, which is usually half of the allowable concentration of this agent Note: it is a revision of Definition 2.23 in GBZ/T 224-2010. 3.10 biological monitoring Systematical monitoring on the content (concentration) of chemical substances or their metabolites in biological materials such as blood and urine of workers, or the level of harmless biological effects caused by them, in order to evaluate the degree of workers' exposure to chemical hazardous agents and their possible health effects Note: it is a revision of Definition 6.1.2 in GBZ/T 224-2010. 3.11 biological exposure limits; BELs the maximum allowable value for chemical substances or their metabolites in workers’ biological materials, or for the biological effects caused by them, which is also a guiding value for evaluating biological monitoring results. As per five working days a week and eight working hours a day, when the biological monitoring value is within the recommended value range, the vast majority of workers will not be affected by adverse health effects. It is also known as biological exposure indices (BEIs) or biological limit values (BLVs) Note: it is a revision of Definition 5.9 in GBZ/T 224-2010. 4 Hygiene requirements 4.1 occupational exposure limits for chemical hazardous agents in the air of workplace Occupational exposure limits for chemical hazardous agents in the air of workplace are given in Table 1.
Foreword i 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 4 Hygiene requirements 5 Monitoring and determination principles and requirements 6 Principles and requirements for occupational exposure control of chemical hazardous agents in workplaces 7 Instructions for proper use of this section Annex A (Normative) Instructions for proper use of this section
Referred in GBZ 2.1-2019:
*GBZ 1-2010 Hygienic Standards for the Design of Industrial Enterprises
*GBZ 159-2004 Specifications of air sampling for hazardous substances monitoring in the workplace
*GBZT160-
*GBZT192-
*GBZ/T 224-2010 Terms of occupational health
*GBZ/T 225-2010 Guideline for employer of prevention and control of occupational diseases
*GBZ/T 229.2-2010 Classification of occupational hazards at workplaces Part2: Occupational exposure to chemicals
*GBZ/T 295-2017 General principles of biological monitoring method in occupational population
*GBZT300-
*GB/T 95-2002 Plain washers - Product grade C
*GB/T 2664-2009 Mens suits and coats
*GB 4706.1-2005 Household and Similar Electrical Appliances – Safety - Part 1: General Requirements
*GB 17625.1-2022 Electromagnetic compatibility—Limits—Part 1: Limits for harmonic current emissions (equipment input current ≤ 16A per phase)
*GB/T 14048.5-2017 Low-voltage switchgear and controlgear-Part 5-1:Control circuit devices and switching element-Electromechanical control circuit devices
*GB 17625.1-2022 Electromagnetic compatibility—Limits—Part 1: Limits for harmonic current emissions (equipment input current ≤ 16A per phase)
*QB/T 1333-2018 Handbag and Knapsack
*GB 2762-2022 National Food Safety Standard - Maximum Levels of Contaminants in Foods
*GB/T 22849-2014 Knitted T-shirt
*GB 5749-2022 Standards for drinking water quality
*GB 14748-2006 Safety Requirements for Wheeled Child Conveyances
*GB/T 1591-2018 High strength low alloy structural steels
*GB 4943.1-2011 Information technology equipment -Safety - Part 1: General requirements
*GB 2763-2021 National Food Safety Standard-Maximum Residue Limits for Pesticides in Food
GBZ 2.1-2019 is referred in:
*DB11/501-2017 Integrated Emission Standards of Air Pollutants
*GB/T 17519-2013 Guidance on the compilation of safety data sheet for chemical products
*GB 28232-2020 Hygienic requirements for ozone disinfector
*GBZ 1-2010 Hygienic Standards for the Design of Industrial Enterprises
*GBZ 2.2-2007 Occupational exposure limits for hazardous agents in the workplace Part2:Physical agents
*HJ 1093-2020 Technical specifications for industrial organicwaste gas treatment by regenerative thermal oxidation
*GB/T 33000-2016 Guideline of China occupational safety and health management system
*GB 30871-2022 Safety specifications of special work in hazardous chemicals enterprises
Code of China
Standard
GBZ 2.1-2019  Occupational exposure limits for hazardous agents in the workplace— Part 1: Chemical hazardous agents (English Version)
Standard No.GBZ 2.1-2019
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count21500 words
Price(USD)480.0
Implemented on2020-4-1
Deliveryvia email in 1 business day
Detail of GBZ 2.1-2019
Standard No.
GBZ 2.1-2019
English Name
Occupational exposure limits for hazardous agents in the workplace— Part 1: Chemical hazardous agents
Chinese Name
工作场所有害因素职业接触限值 第1部分:化学有害因素
Chinese Classification
C52
Professional Classification
GB
ICS Classification
Issued by
National Health Comission
Issued on
2019-08-27
Implemented on
2020-4-1
Status
superseded
Superseded by
GBZ 2.1-2019/XG1-2022 Occupational exposure limits for hazardous agents in the workplace — Part 1: Chemical hazardous agents
GBZ 2.1-2019/XG2-2024 Occupational exposure limits for hazardous agents in the workplace― Part 1: Chemical hazardous agents
Superseded on
2025-5-1
Abolished on
Superseding
GBZ 2.1-2007 Occupational exposure limits for hazardous agents in the workplace Part1:Chemical hazardous agents
Language
English
File Format
PDF
Word Count
21500 words
Price(USD)
480.0
Keywords
GBZ 2.1-2019, GBZ/T 2.1-2019, GBZT 2.1-2019, GBZ2.1-2019, GBZ 2.1, GBZ2.1, GBZ/T2.1-2019, GBZ/T 2.1, GBZ/T2.1, GBZT2.1-2019, GBZT 2.1, GBZT2.1
Introduction of GBZ 2.1-2019
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. The occupational exposure limits given in Tables 1 to 3 in the text of this standard are compulsory, while the rest and those given in Table 4 are recommendatory. This standard is developed in accordance with Law of the People's Republic of China on Prevention and Control of Occupational Diseases. GBZ 2 Occupational exposure limits for hazardous agents in the workplace consists of the following two parts under the general title: ——Part 1: Chemical hazardous agents; ——Part 2: Physical agents. This part is Part 1 of GBZ 2. This part is developed in accordance with the rules given in GB/T 1.1-2009. This part replaces GBZ 2.1-2007 Occupational exposure limits for hazardous agents in the workplace - Part1: Chemical hazardous agents. In addition to editorial changes, the following main technical changes have been made with respect to GBZ 2.1-2007. ——six normative references, i.e., GBZ/T 300, GBZ/T 192, GBZ/T 295, GBZ/T 224, GBZ/T 225 and GBZ/T 229.2, are added; ——nine concepts or definitions with regard to occupational exposure are added, terms in five normative references are deleted, and PE is introduced to replace the excursion limits; ——occupational exposure limits for 28 chemical hazardous agents that has been developed and revised in recent years are summarized and added. ——Chinese or English names and CAS Nos of eight chemical substances are adjusted; ——sensitization labels for 16 substances, skin labels for four substances, and carcinogenicity labels for 14 substances are added, and carcinogenicity labels for seven substances are adjusted; ——exposure limits for nitric oxide are incorporated into those for nitrogen dioxide; ——adverse health effects that are based during establishment of the exposure limits are clearly listed; ——biological limit values for occupational exposure (biological monitoring indexes and exposure limits) are added in Clause 4 “hygienic requirements”, and the released standard biological limit values for occupational exposure in the health industry and their determination methods are confirmed, and 28 biological monitoring indices and exposure limits are summarized and listed. 13 biological limit values for occupational exposure approved in recent years as well as quality requirements for biological material determination and biological monitoring are added; ——relevant requirements for monitoring and determination methods are further improved. For PC-TWA of total dust and respirable dust, it is specified that priority is given to the determination of TWA of the respirable dust; ——control principles and requirements for chemical hazardous agents in the workplace are added. ——Annex B is added, and information about chief drafting organizations and chief drafters of newly-added limits is given; ——Instructions for correct use of Annex A are further refined and improved. The control principles, key points and action levels of occupational exposure to hazardous agents, classification and control of occupational exposure levels, level-to-level management principles for hazardous operation of occupational diseases, etc., are added, and some contents in Annex A “Instructions for correct use” to the former standard have been revised into the text of the standard. The previous editions of this part are as follows: ——GBZ 2-2002; ——GBZ 2.1-2007. Occupational exposure limits for hazardous agents in the workplace - Part 1: Chemical hazardous agents 1 Scope This part specifies the hygiene requirements, determination, evaluation and control principles for occupational exposure to chemical hazardous agents in the workplace. This part is applicable to the hygienic design of industrial enterprises, as well as the management, control and occupational health supervision and inspection of occupational exposure to chemical hazardous agents in the workplace. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GBZ 1 Hygienic standards for the design of industrial enterprises GBZ 159 Specifications of air sampling for hazardous substances monitoring in the workplace GBZ/T 160(all parts) Methods for determination of toxic substances in the air of workplaces GBZ/T 192(all parts) Determination of dust in the air of workplaces GBZ/T 224 Terms of occupational health GBZ/T 225 Guideline for employer of prevention and control of occupational diseases GBZ/T 229.2 Classification of occupational hazards at workplaces - Part 2: Occupational exposure to chemicals GBZ/T 295 General principles of biological monitoring method in occupational population GBZ/T 300(all parts) Methods for determination of toxic substances in the air of workplaces 3 Terms, definitions and abbreviations For the purposes of this document, the terms and definitions established in GBZ/T 224 and the following ones apply. 3.1 chemical hazardous agents the chemical hazardous agents mentioned in this part include chemical substances, dust and biological agents existing in or arising from the workplace 3.2 occupational exposure the process that workers are exposed to occupational hazardous agents through respiratory tract, skin and mucosa in their occupational activities 3.3 adverse health effects hazardous health efforts or toxic effects of the organism arising from the exposure to occupational hazardous agents. Only a certain level of exposure, i.e. excessive exposure, can cause health damage 3.4 critical adverse health effects the adverse health effects that are used to determine the permissible exposure concentration of certain occupational hazardous agent, i.e. the adverse health effects that are based during the determination of the occupational exposure limits 3.5 occupational exposure limits; OELs the permissible exposure level that the workers are repeatedly exposed to one or more occupational hazardous agents for a long time in their occupational activities, which will not cause adverse health effects on the vast majority of exposed persons. The occupational exposure limits of chemical hazardous agents can include three categories, i.e., permissible concentration-time weighted average, permissible concentration-short term exposure limit and maximum allowable concentration Note: it is a revision of Definition 5.1 in GBZ/T 224-2010. 3.5.1 permissible concentration-time weighted average; PC-TWA the average permissible exposure concentration for 40 h per work week (8 h per working day), specified with time as the weight 3.5.2 permissible concentration-short term exposure limit; PC-STEL the weighted average concentration that allows the workers to be exposed for a short time (15 min), provided that the measured average exposure concentration for 40 h per work week (8 h per working day) meets the requirements of PC-TWA Note: it is a revision of Definition 5.3 in GBZ/T 224-2010. 3.5.3 maximum allowable concentration; MAC the concentration that any chemical hazardous agent shall not exceed within any working day, at any time and at any workplace Note: it is a revision of Definition 5.2 in GBZT 224-2004. 3.6 peak exposures; PE the maximum or peak concentration of a specific substance in the air determined in the shortest analyzable duration (no more than 15 min). For the chemical hazardous agents with PC-TWA but whose PC-STEL has not been established, peak exposures shall be used to control short-time contact. The maximum exposures of PC-TWA is allowed to be exceeded during any short time (15 min) within one working day 3.7 exposure level the concentration or intensity of workers' actual exposure to occupational hazardous agents in the workplace in a specific period of time during their occupational activities, which is detected by a standard determination method Note: it is a revision of Definition 2.22 in GBZ/T 224-2010. 3.8 ratio of occupational exposure level to OELs the ratio of the actual exposure level of workers to certain occupational hazardous agents, to the corresponding occupational exposure limits of the agents When workers are exposed to more than two kinds of chemical hazardous agents, the sum of the measured values of chemical hazardous agents and their corresponding occupational exposure limits is called the ratio of mixed exposure 3.9 action level the workers’ actual exposure level to chemical hazardous agents at which the employers are required to take control measures or actions such as occupational exposure monitoring, occupational health monitoring, occupational health training, and occupational hazard notification, also called administration level or administration concentration The action level of a chemical hazardous agent varies with the workplace environment and the hazardous agents, which is usually half of the allowable concentration of this agent Note: it is a revision of Definition 2.23 in GBZ/T 224-2010. 3.10 biological monitoring Systematical monitoring on the content (concentration) of chemical substances or their metabolites in biological materials such as blood and urine of workers, or the level of harmless biological effects caused by them, in order to evaluate the degree of workers' exposure to chemical hazardous agents and their possible health effects Note: it is a revision of Definition 6.1.2 in GBZ/T 224-2010. 3.11 biological exposure limits; BELs the maximum allowable value for chemical substances or their metabolites in workers’ biological materials, or for the biological effects caused by them, which is also a guiding value for evaluating biological monitoring results. As per five working days a week and eight working hours a day, when the biological monitoring value is within the recommended value range, the vast majority of workers will not be affected by adverse health effects. It is also known as biological exposure indices (BEIs) or biological limit values (BLVs) Note: it is a revision of Definition 5.9 in GBZ/T 224-2010. 4 Hygiene requirements 4.1 occupational exposure limits for chemical hazardous agents in the air of workplace Occupational exposure limits for chemical hazardous agents in the air of workplace are given in Table 1.
Contents of GBZ 2.1-2019
Foreword i 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 4 Hygiene requirements 5 Monitoring and determination principles and requirements 6 Principles and requirements for occupational exposure control of chemical hazardous agents in workplaces 7 Instructions for proper use of this section Annex A (Normative) Instructions for proper use of this section
About Us   |    Contact Us   |    Terms of Service   |    Privacy   |    Cancellation & Refund Policy   |    Payment
Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886
Copyright: TransForyou Co., Ltd. 2008-2040
 
 
Keywords:
GBZ 2.1-2019, GBZ/T 2.1-2019, GBZT 2.1-2019, GBZ2.1-2019, GBZ 2.1, GBZ2.1, GBZ/T2.1-2019, GBZ/T 2.1, GBZ/T2.1, GBZT2.1-2019, GBZT 2.1, GBZT2.1