GB/T 25936.4-2024 English PDFUS$439.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25936.4-2024: Rubber and plastics size reduction machines - Part 4: Safety requirements for agglomerators Status: Valid GB/T 25936.4: Historical versions
Basic dataStandard ID: GB/T 25936.4-2024 (GB/T25936.4-2024)Description (Translated English): Rubber and plastics size reduction machines - Part 4: Safety requirements for agglomerators Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G95 Classification of International Standard: 71.120; 83.200 Word Count Estimation: 22,279 Date of Issue: 2024-12-31 Date of Implementation: 2025-07-01 Older Standard (superseded by this standard): GB 25936.4-2010 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 25936.4-2024: Rubber and plastics size reduction machines - Part 4: Safety requirements for agglomerators---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. National Standard of the People's Republic of China ICS 71.120; 83.200CCS G 95 Rubber and plastic crushing machinery Part 4.Safety requirements for pelletizers Rubber and plastics size reduction machines- Part 4：Safety requirements for agglomerators 2024-12-31 Release 2025-07-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Replaces GB 25936.4-2010 Table of ContentsPreface Ⅲ Introduction...Ⅴ 1 Scope...1 2 Normative references ...1 3 Terms and Definitions 2 4 Safety requirements and/or protection/risk reduction measures ...2 4.1 General requirements 2 4.2 Mechanical hazards 2 4.3 Heat Hazards 3 4.4 Noise Hazards 4 4.5 Hazards from dust, fumes and gases 4 4.6 Electrical Hazards 4 4.7 Emergency stop, stop function and start function 5 4.8 Unexpected Startup 5 4.9 Falling from a height...6 5 Verification of safety requirements and/or protection/risk reduction measures 6 6 Usage Information...6 6.1 General requirements 6 6.2 User Manual 6 6.3 Marking and warning signs 7 Appendix A (Informative) Major Hazards 8 Appendix B (Normative) Noise Test Procedures ...10 B.1 General Principles 10 B.2 Determination of sound power level 10 B.2.1 Measurement Standards 10 B.2.2 Measurement uncertainty 10 B.3 Measurement of emission sound pressure level at operating position 10 B.3.1 Measurement Standards 10 B.3.2 Measurement uncertainty 11 B.4 Installation conditions of pelletizer for noise measurement 11 B.5 Agglomerator operating conditions during noise measurement 11 B.6 Information to be recorded and reported 11 B.6.1 General requirements 11 B.6.2 Basic information of pelletizer...11 B.6.3 Agglomerator parameter information 11 B.6.4 Test standard information 12 B.6.5 Noise data 12 B.6.6 Specified test parameters 12 B.6.7 Installation and operating conditions 12 B.7 Declaration and verification of noise emission values 12 References ...14ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document is part 4 of GB/T 25936 Rubber and Plastics Crushing Machinery. GB/T 25936 has been published in the following parts. -- Part 1.Safety requirements for blade crushers; -- Part 2.Safety requirements for strand pelletizers; -- Part 3.Safety requirements for shredders; -- Part 4.Safety requirements for pelletizers. This document replaces GB 25936.4-2010 "Rubber and plastics crushing machinery Part 4.Safety requirements for pelletizers" and is consistent with GB 25936.4- Compared with.2010, in addition to structural adjustments and editorial modifications, the main technical changes are as follows. a) The scope of this document has been changed (see Chapter 1, Chapter 1 of the.2010 edition); b) Three terms and definitions such as "agglomerator" have been changed (see 3.1 to 3.3, 3.1, 3.3, 3.6 of the.2010 edition); c) The terms and definitions of “feeding and discharge openings on the pelletizing chamber”, “fixed feeding device” and “feeding system” have been deleted (see.2010 versions 3.2, 3, 4 and 3.5); d) Added the requirements for the performance level PLr of the safety-related components of the control system (see 4.2.1.1, 4.2.1.3, 4.2.1.6, 4.2.1.7, 4.2.2, 4.2.3.1, 4.7.1, 4.7.2, 4.8); e) Added requirements for openings exceeding 500 mm × 400 mm (see 4.2.1.4); f) Added requirements when manual rotation of pelletizing cutter is not possible (see 4.2.1.6); g) Added requirements to prevent blockage of pelletizing cutters (see 4.2.1.7); h) Changed the requirements for feeding of non-pre-cut materials (see 4.2.2, 5.2.2 of the.2010 edition); i) The requirements for parts or materials to be ejected from the pelletizing chamber and the strength of the pelletizing chamber have been deleted (see 5.2.3 and 5.2.4 of the.2010 edition); j) Added requirements for moving parts of the discharge system (see 4.2.3); k) Some requirements on thermal hazards have been modified (see 4.3.3, 5.3.1 of the.2010 edition); l) The noise test requirements have been changed (see 4.4.3, 5.4.4 of the.2010 edition); m) Added requirements for control loops (see 4.7); n) Added requirements for emergency stop function (see 4.7.1); o) Added requirements for stop function and start function (see 4.7.2 and 4.7.3); p) Changed the requirements for accidental start (see 4.8, 5.7 of the.2010 edition); q) changes to safety requirements and/or verification of protection/risk reduction measures (see Chapter 5, Chapter 6 of the.2010 edition); r) The information for use has been changed (see Chapter 6, Chapter 7 of the.2010 edition); s) Added information on the use of temperature control settings (see 6.2.11); t) Added warning sign information (see 6.3.2); u) Change the “List of Major Hazards” to an informative appendix (see Appendix A, Chapter 4 of the.2010 edition); v) The noise test procedure has been changed (see Appendix B, Appendix A of the.2010 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Rubber and Plastics Machinery (SAC/TC 71). This document was drafted by. Beijing Rubber Industry Research and Design Institute Co., Ltd., Jiangsu Bell Machinery Co., Ltd., Dongguan Xinyi Electric Heating Machinery Co., Ltd., Dalian Plastic Machinery Research Institute. The main drafters of this document are. Wang Gengxin, He Cheng, Li Shuen, Wu Junrui, Bai Yantao and Yang Hong. The previous versions of this document and the documents it replaces are as follows. --First published in.2010 as GB 25936.4-2010; --This is the first revision.IntroductionAccording to the classification of GB/T 15706-2012, this document belongs to Class C standard. This document is particularly relevant to the following stakeholders involved in machinery safety. --machine manufacturers; --Health and safety agencies. Other stakeholders affected by the level of machinery safety are. --machine users; --The owner of the machine; --Service providers; -- Consumer (when the machine is intended for use by a consumer). All of the above stakeholders may participate in the drafting of this document. The machines involved and the range of hazards, hazardous situations and hazardous events covered are given in the scope of this document. When the requirements of this document differ from those in Category A or Category B standards, for machines designed and manufactured in accordance with this document, The requirements of this document take precedence over those in other standards. Rubber and plastic crushing machinery is mainly composed of blade crusher, strand pelletizer, shredder and pelletizer. Rubber and plastic crushing machinery can be divided into the following four parts according to the equipment classification. -- Part 1.Safety requirements for blade crushers. The purpose is to specify the requirements for crushing rubber and plastic materials with blades in the crushing chamber. The blade crusher is designed and manufactured to crush the material until it can pass through the screen holes of appropriate specifications and enter the discharge area. Request and give instructions for safe use of the machine. -- Part 2.Safety requirements for strand pelletizers. The purpose is to specify the requirements for cutting rubber and plastic strip materials into Safety requirements for the design and manufacture of strand pelletizers for regular particles and instructions for safe use of the machine are given. -- Part 3.Safety requirements for shredders. The purpose is to specify the safety requirements for shredders that place rubber and plastic materials on one or more slow-speed rotating shafts. Safety requirements for the design and manufacture of shredders equipped with shredding knives for shredding materials and the relevant information for safe use of the machine illustrate. -- Part 4.Safety requirements for pelletizers. The purpose is to specify the safety requirements for pelletizers that change the shape, size and Safety requirements for the design and manufacture of flowable agglomerator and relevant instructions for safe use of the machine are given. Rubber and plastic crushing machinery Part 4.Safety requirements for pelletizers1 ScopeThis document specifies the safety requirements for the design and manufacture of pelletizing machines and gives instructions for the safe use of the machines. This document is applicable to the treatment of the pelletizer during its entire life cycle (see 5.4 in GB/T 15706-2012). All significant hazards, hazardous conditions and hazardous events associated with the agglomerator in the event of misuse which is reasonably foreseeable by the manufacturer (see Appendix A). This document applies to agglomerators starting from the outer edge of the feed opening and ending at the outer edge of the discharge opening. This document does not cover. - hazards arising from emissions from processing of materials that may be hazardous to health; -- Danger caused by ignition of flammable residues in the processed materials; --Requirements for exhaust ventilation systems.2 Normative referencesThe contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 3767 Acoustics - Determination of sound power level and sound energy level of noise source by sound pressure method - Engineering method for approximate free field above reflecting surface GB/T 5226.1-2019 Electrical safety of machinery Electrical equipment of machinery Part 1.General technical requirements GB/T 8196 Mechanical safety guards - General requirements for the design and manufacture of fixed and movable guards GB/T 14574 Labeling and verification of noise emission values of acoustic machines and equipment GB/T 15706-2012 General principles for safety design of machinery - Risk assessment and risk reduction GB/T 16404.2-1999 Acoustics - Determination of sound power level of noise sources by sound intensity method - Part 2.Scanning measurement GB/T 16754 Design principles for mechanical safety emergency stop function GB/T 16855.1 Safety of machinery - Safety-related components of control systems - Part 1.General principles for design GB/T 17248.2 Acoustic machines and equipment emit noise above a reflecting surface with negligible environmental correction approximate free Field determination of emission sound pressure levels at working positions and other specified locations GB/T 17248.3-2018 Acoustics - Noise emitted by machines and equipment measured at working positions and other locations using approximate environmental corrections Emission sound pressure level at a specified location GB/T 17248.5-2018 Noise emitted by acoustic machines and equipment is measured using accurate environmental corrections for working positions and other indicators. Emission sound pressure level at a fixed position GB/T 17454.2 Safety of machinery - Pressure-sensitive protective devices - Part 2.General rules for the design and testing of pressure-sensitive edges and pressure-sensitive rods GB/T 17454.3 Safety of machinery - Pressure-sensitive protective devices - Part 3.Pressure-sensitive buffers, pressure-sensitive plates, pressure-sensitive wires and similar devices General principles for design and testing GB/T 17888 (all parts) Safety of machinery - Fixed devices for access to machinery GB/T 18153 Safety of machinery - Ergonomic data for determining hot surface temperature limits - Accessible surface temperature GB/T 18831 Design and selection principles for interlocking devices related to mechanical safety and protective devices ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25936.4-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 25936.4-2024_English as soon as possible, and keep you informed of the progress. 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