GB/T 25433-2024 English PDFUS$1079.00 · In stock
Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25433-2024: Safety requirements for rubber & plastics internal mixers Status: Valid GB/T 25433: Historical versions
Basic dataStandard ID: GB/T 25433-2024 (GB/T25433-2024)Description (Translated English): Safety requirements for rubber & plastics internal mixers Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G95 Classification of International Standard: 71.120; 83.200 Word Count Estimation: 54,536 Date of Issue: 2024-07-24 Date of Implementation: 2025-02-01 Older Standard (superseded by this standard): GB 25433-2010 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 25433-2024: Safety requirements for rubber & plastics internal mixers---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.GB/T 25433-2024 English version. Safety requirements for rubber ICS 71.120;83.200 CCSG95 National Standard of the People's Republic of China Replaces GB 25433-2010 Safety requirements for closed rubber and plastic mixing mills Released on 2024-07-24 2025-02-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Safety requirements and/or protection/risk reduction measures 5 4.1 General 5 4.2 Start, stop and restart functions 5 4.3 Control system safety related components 5 4.4 Emergency Stop 6 4.5 Mechanical hazards 6 4.6 Hazards of hose assemblies for hydraulic, pneumatic, heating and cooling systems 21 4.7 Additional risks during large-scale cleaning operations, maintenance and repairs 22 4.8 Electrical hazards 22 4.9 Heat Hazards 22 4.10 Noise Hazards 23 4.11 Hazards caused by substances harmful to health 23 4.12 Fire Hazard 23 4.13 Slip, trip and fall hazards24 4.14 Ergonomics 24 5 Verification of safety requirements and/or protection/risk reduction measures 24 6 Usage Information29 6.1 General requirements 29 6.2 User Manual 29 6.3 Mark 31 6.4 Warning signals and warning signs 31 Appendix A (Informative) Major Hazards 32 A.1 Overview 32 A.2 Design types and operating criteria of internal mixers 32 A.3 Hazards, dangerous situations and dangerous events 33 Appendix B (Normative) Laboratory Internal Mixer Noise Test Procedure 43 B.1 Overview 43 B.2 Determination of A-weighted emission sound pressure level at working position 43 B.3 Determination of A-weighted sound power level 43 B.4 Installation and operating conditions 44 B.5 Recorded and reported information 44 B.6 Declaration and verification of noise emission values 45 Appendix C (Informative) Examples of technical measures to prevent fire hazards caused by exothermic reaction materials 47 References 48ForewordThis 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 replaces GB 25433-2010 "Safety requirements for closed rubber mixing mills and plastic mixing mills". Compared with GB 25433-2010, except for the structural adjustment In addition to the integration and editorial changes, the main technical changes are as follows. a) The scope of application of this document has been changed to include tandem internal mixers and laboratory internal mixers (see Chapter 1,.2010 Chapter 1 of the.2011 edition); b) Added relevant safety requirements for "General Principles", "Start, Stop and Restart Functions" and "Control System Safety Related Components" (see 4.1 to 4.3); c) Added major hazards of laboratory internal mixers and related safety requirements (see 4.4, 4.5.4.13, 4.5.4.14, 4.5.7.2.2, 4.7.1, 4.7.2, 6.2.5, 6.4, A.3.7); d) Changed the following sections. “Emergency stop”, “Mechanical hazards”, “Hazards of hose assemblies for hydraulic, pneumatic and heating and cooling systems”, “Large-scale cleaning operations”. Safety requirements for "additional hazards during operation, maintenance and repair" (see 4.4 to 4.7, 5.1, 5.8, 5.9 of the.2010 edition); e) The safety requirements and protection measures for "electrical hazards" have been changed (see 4.8.1 to 4.8.5, 5.2 of the.2010 edition); f) Changed the following categories. “Heat hazard”, “Noise hazard”, “Hazards caused by substances hazardous to health”, “Fire hazard”, “Hazards of slips, trips and falls”. Safety requirements and protective measures for "risk" (see 4.9~4.13, 5.3~5.7 of the.2010 edition); g) Added “ergonomics” safety requirements and protective measures (see 4.14); h) Changed the “Verification methods for safety requirements and/or risk protection/reduction measures” (see Chapter 5, Chapter 6 of the.2010 edition); i) Added “General requirements” for “information for use” and “general requirements” for “instructions for use” (see 6.1, 6.2.1); j) Changed the terms “installation”, “operation” and “noise” in the instruction manual (see 6.2.2, 6.2.3, 6.2.5, 7.1.1, 7.1.2, 7.1.4); k) Changed "Cleaning operations and maintenance" and "Marking" in the information for use (see 6.2.4, 6.3, 7.1.3, 7.2 of the.2010 edition); l) Added "Fire hazard emergency procedures information" in the instruction manual (see 6.2.6); m) Added “Warning signals and warning signs” in the usage information (see 6.4); n) The “Hazard List” has been changed (see Appendix A, Chapter 4 of the.2010 edition); o) Added the normative appendix “Test Procedure for Noise of Internal Mixers for Laboratory Use” (see Appendix B). 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. Dalian Rubber and Plastic Machinery Co., Ltd., Yiyang Rubber and Plastic Machinery Group Co., Ltd., Shaoxing Jingxiang Machinery Manufacturing Co., Ltd. Co., Ltd., Dalian Second Rubber and Plastic Machinery Co., Ltd., Xiamen Zhicheng Standardization Service 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. Yang Hong, Wang Jinxia, Peng Zhishen, Xu Yongfeng, Liu Ge, Cai Hongxing, He Cheng, Wang Gengxin, Li Xianglan, and Zheng Ji. This document was first published in.2010 as GB 25433-2010 and this is the first revision.IntroductionAccording to the classification of GB/T 15706, 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 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, For devices, the requirements of this document take precedence over those in other standards. Safety requirements for closed rubber and plastic mixing machines1 ScopeThis document specifies the safety requirements for the design and manufacture of closed rubber and plastic mixing mills (hereinafter referred to as "internal mixers") and gives the machine safety Instructions for use. This document is applicable to the treatment of the internal mixer during its life cycle (5.4 in GB/T 15706-2012). All significant hazards, hazardous conditions and hazardous events associated with the internal mixer that could result from misuse that could be reasonably foreseeable by the manufacturer (see Appendix Record A). This document specifies the requirements for the measurement and declaration of noise emissions from internal mixers for laboratory use only. This document applies to the following internal mixers. --- Production internal mixers and tandem internal mixers with manual feeding starting from the charging door and ending at the lower edge of the material discharge port; --- Automatic feeding of production internal mixers and tandem internal mixers starting from the conveyor integrated in the equipment and ending at the lower edge of the material discharge port Refining machine; --- Laboratory internal mixer starting from the charging door and ending at the material container integrated in the internal mixer. This document does not include. --- Risk of explosion during material processing; --- Requirements for equipment and protection systems used in potentially explosive atmospheres; ---Design 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 3766 General rules and safety requirements for hydraulic transmission systems and their components 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 3768 Acoustics Sound Pressure Method for Determination of Sound Power Level and Sound Energy Level of Noise Source Using a Simple Measurement of the Envelope Measurement Surface Above the Reflecting Surface Easy Method 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 7932 General rules and safety requirements for pneumatic systems and their components GB/T 8196-2018 Mechanical safety guards General requirements for the design and manufacture of fixed and movable guards GB 12158 General Guidelines for Preventing Electrostatic Accidents 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 16251 Ergonomic principles for work system design GB/T 16404.2 Acoustics - Determination of sound power level of noise source by sound intensity method - Part 2.Scanning measurement GB/T 16538 Acoustics Sound Pressure Method for Determination of Sound Power Level of Noise Sources - Field Comparison Method GB/T 16754 Design principles for mechanical safety emergency stop function ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25433-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 25433-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 25433-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 25433-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 25433-2024?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 25433-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
