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GB/T 33579-2017: Safety of machinery - Control methods of hazardous energy - Lockout/Tagout Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 33579-2017: Safety of machinery - Control methods of hazardous energy - Lockout/Tagout---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT33579-2017GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 13.110 J 09 Safety of machinery - Control methods of hazardous energy - Lockout/tagout Issued on. MAY 12, 2017 Implemented on. DECEMBER 01, 2017 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of PRC; Standardization Administration of PRC. Table of ContentsForeword... 4 Introduction... 5 1 Scope... 7 2 Normative references... 7 3 Terms and definitions... 8 4 Responsibilities... 10 5 Design... 11 6 Hazardous energy control solutions... 15 Appendix A (Normative) Lockout/tagout solution... 29 Appendix B (Normative) Universal lockout/tagout procedures... 37 Appendix C (Informative) Example of energy control procedure... 40 Appendix D (Informative) Sample lockout/tagout posting... 42 Appendix E (Informative) Team lockout/tagout... 43 Appendix F (Informative) Alternatives for printing industry... 49 Appendix G (Informative) Alternatives for the plastics industry... 50 Appendix H (Informative) Alternatives for robots... 52 Appendix I (Informative) Sample of lockout/tagout checklist... 53 References... 56ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by AND shall be under the jurisdiction of the National Machinery Safety Standardization Technical Committee (SAC/TC 208). Drafting organizations of this standard. Suzhou Aokun Intelligent Robot Technology Co., Ltd., Pilz Automation Trading (Shanghai) Co., Ltd., Lihong Safety Equipment Engineering (Shanghai) Co., Ltd., China Machinery Productivity Promotion Center, Nanjing Forestry University Optomechanical and Electrical Instrument Engineering Research Institute, Fujian Minxuan Technology Co., Ltd., China Institute of Standardization. The main drafters of this standard. Li Zhengde, Huang Zhijiong, Li Qin, Li Liyan, Hou Hongying, Zhang Xiaofei, Xu Kai, Ju Ronghua, Cheng Hongbing, Ning Yan, Chen Nengyu, Chen Zhuoxian, Zhu Bin, Fu Huiqing, Liu Zhiyong, Yin Zhiyao, Liu Xia.1 ScopeThis standard specifies requirements for the control of hazardous energy that may cause personal injury. This standard also specifies the protection steps, technology, design, methods, performance indicators for controlling the accidental release of hazardous energy 1), so as to avoid personal injury. This standard applies to the design, manufacturing, installation, construction, repair, adjustment, inspection, dredging, setting, fault finding, testing, cleaning, disassembly, service, maintenance during the entire life cycle of the machine. This standard does not apply to service or maintenance work on electrical equipment, that is connected to the power supply by wires and plugs, AND where the plugging and unplugging of the power plug is only under the personal control of the service or maintenance personnel. In this case, unplugging the power cord may control the possible injury, which is caused by accidentally energizing or accidentally starting the machine. This standard also does not apply to pressure pipeline transmission and distribution systems involving water, steam, natural gas or petroleum products.2 Normative referencesThe 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) is applicable to this standard. GB 5226.1-2008 Electrical safety of machinery - Electrical equipment of machines - Part 1.General requirements GB/T 15706-2012 Safety of machinery - General principles for design - Risk assessment and risk reduction 1 From the perspective of the person exposed to the risk, any unexpected action, such as energization, starting and release of stored energy, is an accidental release of hazardous energy. GB/T 19876 Safety of machinery - Positioning of protective equipment with respect to the approach speeds of parts of the human body3 Terms and definitionsThe terms and definitions as defined in GB 5226.1-2008 and GB/T 15706-2012, as well as the following terms and definitions, apply to this document. 3.1 Alarm Use of auditory or visual means to remind personnel of impending dangers, such as the start-up, movement, failure or malfunction of machines. 3.2 Authorized individual Personnel assigned to perform hazardous energy control. 3.3 Control circuit A circuit used to start or interrupt the energy of a machine, OR a circuit of a control device or system used to control the performance of a machine without directly interrupting the energy. Note. The control circuit can adopt hydraulic, pneumatic, electrical, electromechanical and other methods. 3.4 Control reliability The ability of a system to prevent or avoid hazardous movement, when a single component of the equipment or system fails. 3.5 Control system Sensors, manual input and mode selection components, interlocking and voting circuits, output components provided to machine's operating devices or mechanisms. 3.6 De-energized All energy sources are disconnected and there is no residual or stored energy.4 Responsibilities4.1 Manufacturer’s responsibilities Manufacturers shall consider the control of hazardous energy, when designing, manufacturing, installing machines, so that users can effectively control hazardous energy when engaging in relevant activities (see Chapter 1), during the entire life cycle of the machine. 4.2 User responsibilities Users shall follow the relevant provisions of this standard, to formulate effective plans, to protect personnel engaged in relevant activities (see Chapter 1) during the entire life cycle of the machine, from dangerous energy injuries. 4.3 Responsibilities of authorized individual Authorized individual shall comply with user-provided programs, procedures, and training for performing hazardous energy control.5 Design5.1 Requirements for manufacturers 5.1.3 Partially energized For those functions that require partial energization, the manufacturer shall conduct a risk assessment, in accordance with Chapter 5 of GB/T 15706-2012, to determine the safest method of entering the machine. When it is necessary to maintain partial energization (such as to clamp workpieces, preserve information, maintain heat, or provide local lighting), other control methods shall be provided, to ensure the safety of personnel. 5.2 Energy isolation device 5.2.1 General requirements To meet the requirements of 6.3, the design, construction, and installation of machines shall take into account energy isolation devices, according to their intended use. Energy isolation devices shall be able to control and/or dissipate hazardous energy. Energy isolation devices should be an integral part of the machine. 5.2.2 Location Energy isolation devices shall be installed in easily accessible locations. If feasible, it shall be located so that the locking device is easy to apply during repair and maintenance. 5.2.3 Identification All energy isolation devices shall be adequately identified or marked, unless their location and arrangement make their purpose obvious. The identification shall include the following. 5.2.4 Performance Energy isolation devices shall be able to be locked or fixed in an effective isolation position. 5.2.5 Applicability Each energy isolation device shall be evaluated to determine its applicability for its intended use. 5.4 Warnings and special instructions The manufacturer shall determine whether warnings and special instructions are required when servicing or maintaining the machine. The manufacturer shall provide appropriate information in the user manual. 5.5 Local component isolation If a component or system of components requires individual service or maintenance, local component isolation shall be provided when the machine is installed. The number and location of energy isolation devices shall be determined, based on the configuration and intended use of the machine. 5.6 Documentation requirements The user manual provided by the manufacturer shall detail. 5.7 Stored energy and residual energy If stored or residual energy has been determined to be hazardous, means for safely dissipating or confining the stored or residual energy shall be integrated into the machine. Devices used to dissipate stored energy shall be designed with means or methods for verifying their location and status. 5.8 Control integration If other methods are used for setting up, troubleshooting or other tasks requiring de- energization or partial energization, a protection system shall be used, to ensure that the failure of individual components within the device or system can still stop or prevent hazardous movement or release of hazardous energy.6 Hazardous energy control solutions6.1 User responsibilities 6.1.1 Equipment The user's machine shall meet the requirements of Chapter 5.If the user's machine does not meet the requirements of Chapter 5, the user shall modify and upgrade the machine, to comply with the requirements of Chapter 5. 6.1.2 Solution Users shall develop a written solution for hazardous energy control; refine the requirements of 6.3 or 6.4.The purpose of the solution is to ensure that before the authorized individual perform the installation, construction, repair, adjustment, inspection, unclogging, setting, troubleshooting, testing, cleaning, disassembly, service, maintenance of machinery, that could unexpectedly energize, start, or release stored energy and cause injury, the risk of exposure to hazard is eliminated or minimized (see Figure 1). 6.2 Control methods The choice of hazardous energy control method depends on whether the task can be performed under energized conditions. Generally, the preferred method of hazardous energy control is lockout/tagout as specified in 6.3. 6.3.2.3.3 Confirmation Each procedure shall be verified by industry experts for accuracy, completeness, and effectiveness of energy controls. 6.3.2.3.4 Approval Each procedure shall be approved by the user's designated personnel before implementation. 6.3.2.4 Protective materials and hardware The user shall provide all protective materials and hardware, which are needed to achieve energy isolation. 6.3.2.5 Energy isolation Lockout and tagout shall only be done by authorized individual. 6.3.3 Energy control elements 6.3.3.1 General requirements Energy control elements shall include the following actions; meanwhile it shall be performed in the order of 6.3.3.2 ~ 6.3.3.10. 6.5 Communication and training 6.5.1 Communication It is the user's responsibility to inform all personnel of the appropriate levels of hazardous energy control and to notify appropriate authorized individual of all aspects of the hazardous energy control solution, such as plan changes, incident experience, plan progress, work performance data, review results, other relevant details. 6.6 Review of hazardous energy control solution 6.6.1 General requirements Users shall regularly evaluate the condition and effectiveness of each element of hazardous energy control solution (see 6.2). The assessment shall include at a minimum. written procedures, specific machinery and processes, lockout/tagout hardware, energy isolation devices, other control methods, communication and training. 6.6.3 Application of specific procedures Compliance with specific hazardous energy control procedures is critical. Therefore, users shall establish an ongoing audit plan, to provide the latest information on the effectiveness of maintenance applications. Users are responsible for executing an audit plan, to verify full compliance with procedures. Audits shall be conducted at least annually; documentation shall be retained for at least 3 years. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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