GB/T 25936.2-2024 English PDFUS$479.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25936.2-2024: Rubber and plastics size reduction machines - Part 2: Safety requirements for strand pelletisers Status: Valid GB/T 25936.2: Historical versions
Basic dataStandard ID: GB/T 25936.2-2024 (GB/T25936.2-2024)Description (Translated English): Rubber and plastics size reduction machines - Part 2: Safety requirements for strand pelletisers Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G95 Word Count Estimation: 24,250 Date of Issue: 2024-08-23 Date of Implementation: 2024-08-23 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 25936.2-2024: Rubber and plastics size reduction machines - Part 2: Safety requirements for strand pelletisers---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. ICS 71.120;83.200 CCSG95 National Standard of the People's Republic of China Replaces GB 25936.2-2012 Rubber and plastic crushing machinery Part 2.Safety requirements for strand pelletizers Released on 2024-08-23 2025-03-01 Implementation State Administration for Market Regulation The National Standardization Administration issued 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 4 4.1 General 4 4.2 Mechanical hazards 4 4.3 Noise hazards 5 4.4 Heat Hazard 5 4.5 Water spill hazard 6 4.6 Electrical Hazards 6 5 Verification of safety requirements and/or protection/risk reduction measures 7 6 Usage Information 7 6.1 General requirements 7 6.2 User Manual 8 6.3 Marking and warning signs 8 Appendix A (Informative) Major Hazards 9 Appendix B (Normative) Noise Test Procedure 10 B.1 General 10 B.2 Determination of sound power level 10 B.2.1 Basic Standards 10 B.2.2 Measurement uncertainty 10 B.3 Determination of emission sound pressure level at operating position 10 B.3.1 Basic Standards 10 B.3.2 Measurement uncertainty 11 B.4 Installation conditions for noise measurement 11 B.5 Operating conditions for noise measurements 11 B.6 Information to be recorded and reported11 B.6.1 General requirements 11 B.6.2 Overall data11 B.6.3 Technical data of rotary cutter 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 Reference 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. This document is Part 2 of GB/T 25936 Rubber and Plastic 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 25936.2-2012 "Rubber and plastics crushing machinery Part 2.Safety requirements for strand pelletizers" Compared with GB 25936.2-2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The scope of this document has been changed (see Chapter 1, Chapter 1 of the.2012 edition); b) Added general requirements for safety requirements and/or protection/risk reduction measures (see 4.1); c) Added the requirement to use fixed protective equipment when entering the cutting room (see 4.2.1); d) The requirements for safety-related components of control systems have been changed (see 4.2.1.2 and 5.1.1.2 of the.2012 edition); e) Changed the requirements for the safe distance from the discharge area to the cutting room (see 4.2.1.3, 5.1.1.3 of the.2012 edition); f) The requirements for the setting of openings for access for maintenance or cleaning have been changed (see 4.2.1.4 and 5.1.1.4 of the.2012 edition); g) The requirements for touching the moving parts of the feeding device have been changed (see 4.2.2.1, 5.1.2.1 of the.2012 edition); h) The requirements for preventing entanglement have been changed (see 4.2.2.2, 5.1.2.2 of the.2012 edition); i) Changed the requirements for the discharge area (see 4.2.4, 5.1.4 of the.2012 edition); j) The requirements for preventing contact with moving parts have been changed (see 4.2.5, 5.1.5 of the.2012 edition); k) The requirements for the determination and indication of noise emission values have been changed (see 4.3.3, 5.2.3 of the.2012 edition); l) The requirements for thermal hazards have been changed (see 4.4, 5.3 of the.2012 edition); m) The requirements for power cut-off (isolating) switches have been changed (see 4.6.3, 5.5.2 of the.2012 edition); n) The requirements for accidental start-up have been changed (see 4.6.4, 5.5.3 of the.2012 edition); o) Changed the requirements for protection against direct contact (see 4.6.5, 5.5.4 of the.2012 edition); p) Changed the requirements for protection against indirect contact (see 4.6.6, 5.5.5 of the.2012 edition); q) The requirements for emergency stop function and emergency stop device have been changed (see 4.6.7, 5.5.6 and 5.5.7 of the.2012 edition); r) The method for verifying safety requirements and/or protection/risk reduction measures has been changed (see Chapter 5 and Chapter 6 of the.2012 edition); s) Added general requirements for usage information (see 6.1); t) The content of the label in the information for use has been changed (see 6.3.1, 7.2 of the.2012 edition); u) Added warning sign information (see 6.3.2); v) Change the “List of Major Hazards” to an informative appendix (see Appendix A, Chapter 4 of the.2012 edition); w) The noise test procedure has been modified (see Appendix B, Appendix A of the.2012 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 Rubber and Plastics Machinery Standardization Technical Committee (SAC/TC71). This document was drafted by. KM (Luoyang) Electromechanical Co., Ltd., Dongguan Xinyi Electric Heating Machinery Co., Ltd., Beijing Rubber Industry Research and Design Institute Co., Ltd., Dalian Plastic Machinery Research Institute, and National Plastic Machinery Product Quality Supervision and Inspection Center. The main drafters of this document are. Xiong Wei, Xu Lijun, Xie Zhongming, Wang Gengxin, Wu Junrui, He Cheng, Wang Jinxia and Zheng Ji. The previous versions of this document and the documents it replaces are as follows. ---First published in.2012 as GB 25936.2-2012; ---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 manufacturer; ---Health and safety agencies. Other stakeholders affected by the level of machinery safety are. ---Machine users; ---Machine owner; ---Service provider; --- 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, For devices, the requirements of this document take precedence over those in other standards. Rubber and plastic crushing machinery mainly consists 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 design and manufacture of the blade crusher is safe. 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 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 flow of waste thermoplastics in a closed room. The safety requirements for the design and manufacture of dynamic agglomerators are given, and relevant instructions for the safe use of the machines are given. Rubber and plastic crushing machinery Part 2.Safety requirements for strand pelletizers1 ScopeThis document specifies the safety requirements for the design and manufacture of strand pelletizers and gives instructions for the safe use of the machine. This document is applicable to the treatment of strand pelletizers during their life cycle (see 5.4 in GB/T 15706-2012). All significant hazards, hazardous conditions and dangerous conditions associated with the strand pelletizer in the event of misuse that is reasonably foreseeable by the manufacturer. Dangerous events (see Appendix A). This document applies to strand pelletizers for pelletizing rubber and plastic materials with continuous feed. This document applies to the feed port of the feeding device starting from the strand pelletizer. If there is a starting device, it starts from the strand pelletizer. The starting device ends at the strand pelletizer in the discharge area.2 Normative referencesThe contents of the following documents constitute 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 3836.1 Explosive atmospheres Part 1.General requirements for equipment GB/T 3836.2 Explosive atmospheres Part 2.Equipment protected by flameproof enclosure "d" GB/T 3836.3 Explosive atmospheres Part 3.Equipment protected by increased safety "e" GB/T 3836.4 Explosive atmospheres Part 4.Equipment protected by intrinsic safety type "i" GB/T 3836.5 Explosive atmospheres Part 5.Equipment protected by a pressurized enclosure "p" GB/T 3836.6 Explosive atmospheres Part 6.Equipment protected by liquid immersion type "o" GB/T 3836.7 Explosive atmospheres Part 7.Equipment protected by sand-filled "q" GB/T 4208-2017 Enclosure protection degree (IP code) GB/T 5226.1-2019 Electrical safety of machinery Electrical equipment of machinery Part 1.General technical requirements GB/T 8196-2018 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 Acoustics Noise emitted by machines and equipment is measured at the working position and other specified positions using approximate environmental correction The emission sound pressure level GB/T 17248.5 Acoustics Noise emitted by machines and equipment is measured at the working position and other specified positions using accurate environmental correction The emission sound pressure level ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25936.2-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 25936.2-2024_English as soon as possible, and keep you informed of the progress. 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