GB 21668-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 21668-2025	RFQ	ASK	3 days	(Safety technical specifications of vehicles for the carriage of dangerous goods)	Valid
GB 21668-2008	209	Add to Cart	3 days	Provisions of vehicles for the carriage of dangerous goods with regard to their specific constructional features	Valid

Basic data

Standard ID: GB 21668-2025 (GB21668-2025)
Description (Translated English): (Safety technical specifications of vehicles for the carriage of dangerous goods)
Sector / Industry: National Standard
Date of Implementation: 2026-07-01
Older Standard (superseded by this standard): GB 21668-2008, GB 20300-2018, GB 36220-2018
Issuing agency(ies): State Administration for Market Regulation; Standardization Administration of China

GB 21668-2008: Provisions of vehicles for the carriage of dangerous goods with regard to their specific constructional features

---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.
Provisions of vehicles for the carriage of dangerous goods with regard to their specific constructional features ICS 43.160 T59 National Standards of People's Republic of China Structural requirements of dangerous goods transport vehicles Published 2008-04-21 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China issued

Foreword

All technical contents of this standard is mandatory. This standard corresponds to ECER105 Economic Commission for Europe.2000 "unified structure of specific provisions automobile transport of dangerous goods and identify patterns Certification requirement "and ADR.2003" European Agreement concerning the contents of dangerous goods international road transport, "the. This standard ECER105.2000 and ADR.2003 it is not equivalent. This standard Appendix A and B are normative. The standard proposed by China Machinery Industry Federation. This standard by the National Automotive Standardization Technical Committee. This standard was drafted. Hanyang Special Purpose Vehicle Research Institute, Jiangxi Oxygen Plant, China Quality Certification Center, Special Purpose Vehicle Products Machinery Industry Quality Inspection Center, National Automobile Quality Supervision and Inspection Center (Xiangfan), China National Heavy Duty Truck Group Co., Limited Yangzhou Tonghua trailer the company. The main drafters. Wu Yueling, Pan Junxing, Li United States, Du Juan, Huang small pieces, Li Fujun, Liu Hongqing. Structural requirements of dangerous goods transport vehicles Range 1 This standard specifies the structural requirements of dangerous goods transport vehicles. This standard applies to classes N and O category vehicles transporting dangerous goods and the N train and a vehicle class vehicle class O composition.

2 Normative references

Terms of the following documents become provisions of this standard by reference in this standard. For dated reference documents, all later Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to agreements based on this standard Whether the latest versions of these documents. For undated references, the latest version applies to this standard. GB 3836.1 explosive gas atmospheres Electrical Equipment Part 1. General requirements (GB 3836.1-2000, eqv IEC 60079-0.1998) GB 3836.2 Electrical Apparatus for Explosive Gas Atmospheres Part 2. flameproof "d" (GB 3836.2-2000, eqv IEC 60079-1.1990) GB 3836.3 Electrical Apparatus for Explosive Gas Atmospheres - Part 3. increased safety "e" (GB 3836.3-2000, eqv IEC 60079-7.1990) GB 3836.4 explosive gas atmospheres Electrical Equipment Part 4. Intrinsic safety "i" (GB 3836.4-2000, eqv IEC 60079-11.1999) GB 3836.9 explosive gas atmosphere electrical equipment Part 9. Encapsulation "m" (GB 3836.9-2006, IEC 60079- 18.2004, IDT) GB 4208 shell protection (IP code) (GB 4208-1993, eqv IEC 529. 1989) GB/T 4606 Road trailer towing vehicle seat basic size No. 50 and the pin tractor installation, interchangeability dimensions (GB/T 4606- 2006, ISO 337. 1981, IDT) GB/T 4607 Road vehicle trailer kingpin fifth wheel 90 is substantially the size and installation, interchangeability dimensions (GB/T 4607- 2006, ISO 4086.2001, IDT) GB/T 4781 Road vehicles - 50 mm drawbar interchangeability hanging ring (GB/T 4781-2006, ISO 1102.2001, IDT) GB 6944 Classification and code of dangerous goods GB 12268 of dangerous goods GB/T 13880 Road vehicles fifth wheel interchangeability (GB/T 13880-2007, ISO 3842.2001, IDT) QC/T 446 tractor pulling saddle seat

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Classification according to GB 6944 and GB dangerous goods in column name 12268 (hereinafter referred to as goods). 3.2 Loading a transport vehicle in line with the explosive limit cargo appendix Ⅱ A predetermined sequence of. 3.3 Limits for transport loading vehicle according to Annex A of the explosive goods predetermined sequence of Ⅲ. 3.4 A flash point of not higher than for the transport of the liquid 61 ℃ or vehicle for transporting flammable gas, which container is a cargo tank or vehicle tank cartridge Volume of the box, the container is greater than 3m3. 3.5 Transport vehicle for stabilizing hydrogen peroxide or an aqueous solution (a concentration of greater than 60%), the cargo container is a cartridge tank or vehicle tank Volume of the box, the container is greater than 3m3. 3.6 FL cargo container and vehicle type and the same type of non-OX FL and OX type vehicles.

4 Requirements

4.1 In addition to the vehicle structure shall comply with the requirements of this standard, it must also meet the requirements of the relevant standards and regulations of the country. 4.2 EX/Ⅱ, EX/Ⅲ, FL, OX, AT vehicle should meet the terms of the corresponding items in Appendix B. 4.3 Electrical apparatus 4.3.1 Wire 4.3.1.1 wire cross-sectional area should be sufficient to prevent overheating, and should be reliable insulation. All automatic circuit breaker or fuse shall be provided Be protected, a circuit portion except for the following. a) and an engine cold start to shut down the system from the battery; b) from the battery to the alternator; c) from the AC generator to fuse or circuit breaker box; d) from the battery to the starter; e) from the battery to the electric control box or electromagnetic retarder braking system; f) from the battery to the electrical Ping Heng arm lift axle shaft axis of the lifting mechanism. Above unprotected circuit should be as short as possible. 4.3.1.2 wires should be arranged reasonably reliable and fixed, so that mechanical and thermal stress damage sufficient to prevent. 4.3.2 power switch 4.3.2.1 mounting position of the switch should be as close to the battery. 4.3.2.2 cab should be provided for opening the power switch, the control means closing operation. The control device should be easy to operate bit mounting Disposed opposite and clearly marked, and the protection device should be provided can be prevented from erroneous operation; auxiliary control unit meeting the above requirements may also be mounted. 4.3.2.3 switch box IP65 protection should meet the requirements specified in GB 4208. 4.3.2.4 switch on the harness connector should meet the requirements specified degree of protection IP54 GB 4208, but if these joints disposed storage Pool inside, just take a reliable insulation measures to prevent short circuits can be. 4.3.3 Battery 4.3.3.1 the battery terminals to be taken reliable insulation or protection with an insulating cover of the battery box. The battery should be placed opened Vent box, unless its installed position beneath the hood. 4.3.4 always-on circuit 4.3.4.1 power switch remains energized after disconnecting the electrical device, which comprises a lead environmental adaptability should meet regulatory GB 3836.1 General requirements given, and GB 3836.2, GB 3836.3, GB 3836.4, GB 3836.9 corresponding to the additional requirements. 4.3.4.2 without direct power switch is turned on the battery line to be taken reliable thermal protection. 4.3.5 rear cab electrical device In normal use of the vehicle cabin rear electrical devices or spark should not short-circuited, and the occurrence of impact or change Such risks can be minimized form when, in particular. a) the arrangement should lead anti-collision, anti-corrosion and wear protection. However, anti-lock brake system without additional sensor cable Protection; b) prohibit the use of screw bulb; c) the electrical connection between the tractor and the trailer to meet the requirements of IP54 protection predetermined GB 4208, and should have to prevent accidental Disconnect function. 4.4 Fire 4.4.1 Cab 4.4.1.1 cab structure materials should be non-combustible material. Interior materials should meet the requirements of GB 8410. 4.4.1.2 If the cab is made of a combustible material, the metal protective plate should be provided with a cargo box at the rear of the cab width. Rear cab All windows should be closed and sealed, the glass should be of refractory material and frame. Cargo box or cab rear wall not less than the protective plate spacing 150mm. 4.4.2 Fuel Tank 4.4.2.1 event of a leak, leaking fuel can be directly discharged to the ground, without touching the heat member or a cargo compartment of the vehicle. 4.4.2.2 fuel tank filler should be set or sets arrester reliable hermetically sealed filler cap. 4.4.3 engine 4.4.3.1 engine and exhaust system should be routed so that it is possible to prevent heat generation and sparking endanger the goods. EX/Ⅱ and EX/vehicle type Ⅲ And the engine should be set at a sufficient distance from the cargo or the heat insulating member and the cargo prior to ensure cooling of the engine will not endanger the goods. 4.4.4 exhaust pipe 4.4.4.1 exhaust pipe arranged to be heated and burnt can be prevented goods. Net from the exhaust pipe and the fuel tank is at least 100mm, or using spacers Thermal insulation measures both. 4.4.5 retarder 4.4.5.1 in the rear cab vehicle brake system equipped with a retarder, heat-insulating layer should be provided between the system and the cargo compartment (pot). The insulation layer Retarder braking system must prevent both heat endanger the goods, but also to prevent leakage of the cargo compromise the system itself. 4.4.6 Fuel heater 4.4.6.1 fuel heater and exhaust pipes shall be designed, arranged and set the heat protective gear to prevent it from heating endangering goods. Heater fuel tank and the exhaust system shall comply with the requirements of 4.4.2 and 4.4.4, respectively. When one of the following three conditions 4.4.6.2 occur, the heater should be able to stop the run. a) artificially mounted in the cab closed by a manual switch; b) --- automotive engine stop in this case, the driver should be able to manually restart the heater switch; c) start cargo transfer pump on the vehicle. 4.4.6.3 heater stops working after being allowed to burn after the present cycle. 4.4.6.2 but lower in b) and c) where the heating operation is stopped , A cutting means can be provided in the combustion air supply is stopped after 40s. Heater heat exchange member must withstand the afterburner 40s Cycling ability. 4.4.6.4 heater Kai, the switch must be closed manually. Control means prohibits any program. 4.4.6.5 heaters burning gaseous fuel is prohibited. 4.5 speed limiter 4.5.1 maximum total mass greater than 12t of N vehicles should be equipped with speed limiting device. Set-speed device should not exceed the speed of 90km/h. 4.6 trailer connection 4.6.1 tractor and trailer coupled to the fifth wheel coupling pin and the seat shall meet the QC/T 446, GB/T 13880 and GB/T 4606, GB/T 4607 requirements. 4.6.2 tractor and trailer coupling device should meet the GB/T 4781 requirements.

Appendix A

(Normative) Loading sequence table limits Table A. 1 loading limits the sequence table in kilograms Goods category serial number 1.1 Other 1.1A 1.2 1.3 1.4 Other 1.4S 1.5 and 1.6 Unwashed Empty packaging Ⅱ 6.25 1000 3000 5000 Any Any 150,005,000 Ⅲ 18.75 16000 16000 16000 1600016000 Any Any

Appendix B

(Normative) Corresponding to five kinds of vehicle technical requirements list Table B. 1 corresponding to five kinds of vehicle technical requirements list Technical requirements Terms Vehicle type EX/Ⅱ Type EX/FL Type Type Type Ⅲ AT type OX 4.3.1 √ √ √ √ 4.3.2.1 √ √ 4.3.2.2 √ √ 4.3.2.3 √ 4.3.2.4 √ √ 4.3.3 √ √ √ 4.3.4.1 √ 4.3.4.2 √ 4.3.5 √ √ 4.4.1.1 √ √ 4.4.1.2 √ 4.4.2 √ √ √ √ 4.4.3 √ √ √ √ 4.4.4 √ √ √ 4.4.5 √ √ √ √ 4.4.6.1,4.4.6.2, 4.4.6.5 √ √ √ √ √ 4.4.6.3,4.4.6.4 √ 4.4.6.6 √ √ 4.5 √ √ √ √ √ 4.6 √ √ ......

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