This standard specifies the requirements, identification and rules for inspection and use of portable tanks for dangerous goods. This standard applies to the inspection of portable tanks for dangerous goods from Class 3 to Class 9 in the classification of dangerous goods. GB 19454.3-2004 Inspection and Safety Specifications for Portable Tanks for Dangerous Goods GB19454.3-2004 Standard download decompression password: www.bzxz.net
This standard specifies the requirements, identification and rules for inspection and use of portable tanks for dangerous goods. This standard applies to the inspection of portable tanks for dangerous goods from Class 3 to Class 9 in the classification of dangerous goods.
Chapter 5 and Chapter 6 of this standard are mandatory, and the rest are recommended.
The degree of consistency between this standard and the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition) is non-equivalent.
Its relevant technical content is consistent with the model regulations, and the standard text format has been edited according to GB/T1.1-2000.
This standard is proposed and managed by the National Technical Committee for Standardization of Dangerous Chemicals Management (SAC/TC251). The
responsible drafting unit of this standard is the Dangerous Goods Central Laboratory of the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China.
Participating drafting units of this standard are: Tianjin Exit-Entry Inspection and Quarantine Bureau, Asia-Pacific Dangerous Goods Association, Jiangnan University.
Main drafters of this standard are: Wang Libing, Shang Wei, Zhao Haolibao, Xiang Xuejie, Gao Jian, Tian Jiayin.
This standard is formulated for the first time.
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated document, the latest version of the document shall apply to this standard.
GB19454.1-2004 General Rules for Safety Inspection of Portable Tanks for Dangerous Goods
GB19454.2-2004 Safety Inspection of Portable Tanks for Dangerous Goods Performance Inspection
ISO1496-3:1995 Freight Containers Specification and Testing
ISO4126-1:1996 Safety Valves
United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (13th revised edition)

ICS 13.300
National Standard of the People's Republic of China
GB19454.3—2004
Safety code for inspection of portable tanks for dangerous goods--Use appraisal
2004-03-04 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Administration of Standardization of the People's Republic of China
com2004-10-01 Implementation
GB 19454.3—2004
The 5th and 6th parts of this standard are mandatory, and the rest are recommended. The consistency degree of this standard with the United Nations Recommendations on the Transport of Dangerous Goods Model Regulations (13th revised edition) is not equivalent, and its relevant technical contents are consistent with those in the model regulations. The editorial modifications have been made to the standard text format according to GH/T1.1-2000. This standard is proposed and managed by the National Technical Committee for Standardization of Dangerous Chemicals Management (SAC/TC251). The responsible drafting unit of this standard is the Dangerous Goods Inspection Center Laboratory of the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. The participating drafting units of this standard are: Tianjin Entry-Exit Inspection and Quarantine Bureau, Asia-Pacific Dangerous Goods Association, and Jiangnan University. The main drafters of this standard are: Wang Libing, Shang Wei, Zhao Haolibao, Xiang Xuehao, Gao Jian, and Tian Jiayin. This standard is a simplified version of the following: GB 19454. 3-2004 Safety Specification for Inspection and Use of Portable Tanks for Dangerous Goods This standard specifies the requirements, identification and identification rules for inspection and use of portable tanks for dangerous goods. This standard applies to the inspection of portable tanks for dangerous goods of Class 3 to Class 9 in the classification of dangerous goods for transportation. 2 Normative References The clauses in the following documents become the clauses of this standard through reference in this standard. For any document with a date, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any document without a date, the latest version shall apply to this standard. B1945411-2004 General Rules for Safety Specifications for Inspection of Portable Tanks of Dangerous Goods GB19454.2-2004 Safety Specifications for Inspection of Portable Tanks of Dangerous Goods Performance Test ISO 1496-3.1995 Freight Containers Specification and Testing IS0 4126-1:1996 Safety Valves United Nations Recommendations on the Transport of Dangerous Goods: Model Regulations (13th Revised Edition) 3 Terms and Definitions
GB19454.1-2004 and the following terms and definitions apply to this standard. 3.1
nise appraisal lot
The portable tank parts produced with the same raw materials, the same structure and the same process are an appraisal lot, referred to as a lot. 4 Requirements
4.1 General requirements
4..1 Appearance requirements of portable tanks:
) The marks, signs and dangerous goods color labels cast, printed or pasted on the portable tanks should be accurate and clear, and comply with the relevant requirements of GB19154.1-2004. b) The surface of the portable tank should be clean, and no residue, pollution or leakage is allowed. 4. 1.2 The portable tank selected by the user unit should be compatible with the nature of the dangerous goods contained, and its performance should comply with the provisions of GB 19454.2-2004.
4.1.3 In the following cases, a dangerous goods classification, grading and hazardous characteristics inspection report issued by an inspection agency recognized by the national quality supervision, inspection and quarantine department shall be provided:
a) First shipment or production;
b) First export;
c) When the national quality inspection department deems it necessary. 4.1.4 When used to transport liquids with a flash point of 61°C or below, or when used to transport powdered rice that is prone to dust explosion, appropriate anti-static measures shall be taken.
4.1.5 Generally, liquid dangerous goods are filled to less than 98% of the total volume of the portable tank. For liquid goods with a large expansion coefficient, the reserved volume of the container shall be determined based on its expansion coefficient. Solid dangerous goods are filled to less than 95% of the volume of the portable tank, and the remaining space is filled or padded as required.
comGB19454.3—2004
4.1,6 When liquid or inert gas is used to protect dangerous goods, the liquid or inert gas should be able to effectively ensure the safety of dangerous goods. 4.1.7 Dangerous goods and portable tanks in contact with them shall not undergo any chemical reaction that affects the strength of the container and causes danger. 4.1.8 The closure of the portable tank should be tightly fitted and equipped with appropriate sealing rings to ensure that dangerous goods do not leak during transportation. 4.2 Design and manufacturing requirementsbZxz.net
4.2.1 The shell, accessories and pipelines of portable tanks should be made of materials with the following properties: a) Basically not corroded by the substances to be transported;
h) Appropriately passivated or neutralized by chemical action; or) Have anti-corrosion materials directly bonded to the shell, or the lining is bonded by equivalent methods. 4.2.2 Gaskets should be made of materials that are not corroded by the substances to be transported. 4.2.3 When the shell is lined, the lining material should be basically not corroded by the substances to be transported. The material should be uniform, non-porous and non-porous, have sufficient elasticity, and have thermal expansion characteristics compatible with the tank filling. The lining of each shell, shell fittings and pipes should be continuous and extend to each continuous surface. If the external fittings are welded to the tank body, the lining should be continuous throughout the flange surface of the fittings and the external flange. 4.2.4 The joints and joints of the lining should be joined together by melting or other equally effective methods. 4.2.5 The contact between different metal phases to form a battery action surface causing metal corrosion should be avoided. 4.2.6 The materials of the portable tank and any of its devices, gaskets and parts shall not have an adverse effect on the contents of the tank. 4.2.7 The portable tank should be designed and supported to provide a firm support during transportation, and should have appropriate lifting and fastening devices.
4.2.8 The design of the portable tank should at least be able to withstand the internal pressure caused by the pressure of the contents and the static, dynamic and thermal loads during normal loading, unloading and transportation without causing the contents to be damaged. The design should take into account the fatigue effects caused by repeated application of these loads during the expected service life of the portable tank.
4.2. For portable tanks intended for use at sea, the dynamic stresses imposed by loading and unloading on the tank should be taken into account. 4.2.10 For portable tanks intended to carry substances in accordance with Class 3, including substances at high temperatures transported at or above their flash point, the vacuum chamber pressure device used should be able to prevent flames from directly penetrating into the shell. Otherwise, the end shell of the portable tank should be able to withstand internal explosion caused by flames penetrating into the shell without explosion.
4.2.11 Portable tanks used for the transportation of substances in accordance with Class 3, including substances at high temperatures transported at or above their flash point, should be able to be grounded for anti-static purposes. Measures should be taken to prevent dangerous electrostatic discharges. 4.2.12 The ignition temperature of the insulation in direct contact with the shell of a tank intended for transport at elevated temperatures shall be at least 50 °C higher than the maximum design temperature of the shell.
4.3 Auxiliary equipment
4.3.1 Auxiliary equipment shall be installed in such a way that it cannot be dislodged or damaged during loading, unloading and transport. If the connection between the frame and the shell allows relative movement between the components, the equipment shall be installed in such a way that relative movement is allowed without damaging the working parts. External discharge fittings (pipe sockets, closing caps), internal stop valves and their bearings shall be protected from the risk of being dislodged by external forces (e.g. shear forces). The loading and unloading devices (including flanges or threaded plugs) and any protective caps shall be protected from accidental opening. 4.3.2 All shell ports for loading or unloading portable tanks shall be equipped with manual stop valves. The stop valves shall be located as close to the shell as possible. Openings other than those leading to the vent or safety pressure relief device shall be fitted with a shut-off or another suitable closing device, located as close to the shell as possible.
4.3.3 Portable tanks shall all have access ports or other inspection ports of suitable size for internal inspection and sufficient space for internal maintenance and repair. Each compartment of a partitioned portable tank shall have an access port or other inspection port. 4.3.4 External fittings shall be concentrated together as much as possible, and overflow collection ports with appropriate drainage devices shall be provided around the top fittings of the insulated portable tank.
4.3.5 Each connection of the portable tank shall have a clear mark indicating its function. 4.3.6 Valves and accessories shall be made of forgeable metal. com4.4 Bottom opening device
GB19454.3—2004
Some materials should not be transported in portable tanks with bottom openings. When the applicable portable tank specification described in the United Nations "Construction Manual on the Transport of Dangerous Goods: Model Regulations (13th revised edition) states that bottom openings are not allowed, there shall be no openings below the lining of the tank shell when it is filled to its maximum permissible loading limit. To close an existing opening, a metal plate shall be welded inside and outside the tank. 4.5 Pressure Relief Devices
4.5.1 Each portable tank or tank compartment of similar capacity not less than 1900 m2 shall be equipped with one or more spring-loaded pressure relief valves. It may also have a frangible disc or fusible plug connected in parallel with the spring-loaded pressure relief device, except for those prohibited by Article 6.7 of the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations (13th Revised Edition)". The capacity of the pressure relief device shall be sufficient to prevent overpressure or vacuum caused by loading and unloading or temperature rise of the contents, or cracking of the tank shell. 4.5.2 The design of the pressure relief device shall be able to prevent the entry of foreign matter, relatively large body and shape 4.5.3 The portable tank shall be equipped with a pressure-reducing device approved by the competent authority. Unless the dedicated portable tank is equipped with an approved pressure-reducing device made of materials compatible with the cargo, the pressure-reducing device shall consist of a spring pressure-reducing device and a front frangible disc. When the frangible disc and the required pressure-reducing device are installed in conjunction, a pressure gauge or appropriate signal display shall be installed in the space between the two to detect rupture, perforation or leakage of the frangible disc that may cause failure of the pressure-reducing system. The frangible disc shall rupture when the nominal pressure is 10% higher than the pressure at which the pressure-reducing device begins to vent.
4.5.4 Each portable tank with a volume of less than 1 900 1.1 shall be equipped with a pressure-reducing device. The pressure-reducing device may be a pressure-reducing device that complies with 4.7 If a spring pressure-reducing device is not used, the frangible disk should be set to rupture when the nominal strength is equal to the test pressure. 4.5.5 For tank shells equipped for pressurized unloading, an appropriate pressure-reducing device should be installed in the air inlet pipe, which should be set to function at a pressure not higher than the maximum allowable working strength of the tank shell, and a gradual flow valve should be installed as close to the tank shell as possible. 4.6 Fusible ±
The fusible plug should function at a temperature between 110°C and 149°C, provided that the pressure inside the tank shell at the melting temperature of the fusible plug is not greater than the test pressure. The fusible plug should be installed on the top of the tank shell, and the inlet position should be in the vapor air. time, and in no case shall it be isolated from external heat. Portable tanks with a test pressure greater than 265ka shall not use fusible plugs. Fusible plugs used on portable tanks intended for the carriage of high temperature substances shall be designed to function at a temperature higher than the highest temperature encountered during transportation and shall comply with the requirements of the competent authority or its authorized unit.
4.7 Fragile disks
4.7.1 Except as provided in 1.5, fragile disks shall be set to rupture at a nominal pressure equal to the test pressure throughout the design temperature range. When using fusible disks, special attention should be paid to 4. 3 and 4.5. 4.7.2 The frangible disc shall be suitable for the vacuum pressure generated by the portable tank. 4.8 Marking of pressure relief devices
4.8.1 Each pressure relief device shall be clearly and permanently marked to indicate: a) the set discharge pressure (kPa) or temperature (℃); b) spring device: discharge pressure tolerance; frangible disc: reference temperature corresponding to the rated pressure; d) fusible plug: temperature tolerance:
e) the rated flow capacity of the device expressed in m/s; f) the manufacturer's name and relevant product catalog number. 4,8.2 The rated flow capacity marked on the pressure relief device shall be determined in accordance with ISO4126-1:1996. 4.9 Passageway to the pressure relief device
The passageway to the pressure relief device shall be of sufficient size to allow the material to be discharged to pass to the safety device without restriction. No stop valves shall be installed between the shell and the pressure relief device unless a duplex pressure relief device is installed for maintenance or other reasons and the stop valves of the pressure relief device in use are locked in the open position or the stop valves are interlocked so that at least one of the duplex devices is always in use. There shall be no obstructions in the openings leading to the vent or pressure relief device that would restrict or cut off the flow of gas or liquid from the shell to the device. Pressure relief device comG19454.3--2004
If a vent or duct is used, it shall be possible to discharge the released vapor or liquid to the atmosphere under conditions where the pressure relief device is subjected to minimum back pressure. 4.10 Location of pressure relief devices
4.10.1 The inlet of each pressure relief device shall be located at the top of the tank shell, as close as possible to the longitudinal and transverse center of the shell. All inlets of decompression devices shall be located in the vapor space of the tank under maximum loading conditions and the installation of decompression devices shall ensure that the exhaust gas can be discharged without restriction. For flammable materials, the exhaust vapor shall be directed away from the tank shell so that it will not hit the secondary shell. Protective devices that can deflect the flow direction of vapor are allowed, but the required decompression capacity shall not be reduced. 4.10.2 Arrangements shall be made to prevent unauthorized personnel from approaching the lowering device, and the decompression device shall be protected to prevent damage when the portable tank is tipped.
4. 11 Measuring capacity
Liquid level indicators and gauges that are in direct contact with the contents of the tank shall not be made of glass or other fragile materials. 4.12 Support, frame, lifting and fastening accessories 4.12.1 Portable tanks shall be designed and constructed with supporting structures to provide a firm base during transportation. The design in this regard shall take into account the various forces and the specified safety factors. Bottom pads, push racks, brackets or other similar devices may be used. 4.12.2 The combined stresses caused by the fixings of the portable tank (such as brackets, frames, etc.) and the lifting and fastening accessories should not cause excessive stress on any part of the shell. Permanent lifting and fastening accessories should be installed on all portable tanks, preferably on the supports of the body, but they can be fixed to the steel plates at the support points of the shell. 4.12.3 In designing the supporting frame, the corrosive effects of the environment should be taken into account. 4.12.4 Forklift ports should be closable. The device for closing the forklift ports should be a permanent part of the frame or permanently attached to the frame. Single-compartment portable tanks less than 3.65m in length do not need to have a closed double-cart port, provided that: a) the tank, including all accessories, is well protected from double-edged impact and b) the distance between the center points of the two ports is at least equal to half the maximum length of the portable tank. 4.12.5 For unprotected portable tanks during transport, the shell group auxiliary equipment should have protection measures to prevent damage due to lateral or longitudinal impact or overturning. External accessories should be protected to prevent the contents of the shell from being released when the portable tank is hit or overturned on these accessories. Examples of protection measures include:
a) Measures to prevent lateral impact, which can be longitudinal protective steel bars set on the center line of both sides of the shell; b) Measures to prevent the portable tank from overturning, which can be reinforcement rings or steel bars fixed to the tank body; measures to prevent rear impact, which can be anti-collision baffles or brackets; c
d) Measures to prevent damage to the shell due to impact or overturning, a frame that complies with ISO1496-3;1995 can be used. 5 Identification
5. 1 Check whether the portable tank meets the requirements of 4.1.1, 4.1.5 and 4.1.7. 5.2 Check whether the selected portable tank is suitable for the nature of the dangerous goods according to the relevant provisions of G1319454.2-2004, whether the packaging level of the container is equal to or higher than the level of the dangerous goods; whether there is a qualified report of performance inspection. 5.3 For the portable tanks of dangerous goods mentioned in 4.1, 4 and 4.1.6, check whether they have the corresponding certificates and inspection reports. 5.4 Check whether the portable tanks containing liquids or solids meet the requirements of 4.1.8. 5.5 Extract the liquid protecting the dangerous goods for analysis to determine whether the protective liquid can effectively ensure the safety of the dangerous goods. 5.6 Use a micro gas measuring instrument to detect the inert gas content to determine whether the inert gas can effectively ensure the safety of the dangerous goods. 5.7 Check whether the manufacturing materials of the portable tank meet the requirements of 4.2.1~~4.2.6. 5.8 Check whether the design and manufacture of the portable tank meet the requirements of 1.2.7~~4.2.12. 5.9 Check whether the auxiliary equipment of the portable tank meets the requirements of 4.3. 5. Check whether the bottom lifting device of the portable tank meets the requirements of 4.4. Check whether the pressure relief device of the portable tank meets the requirements of 4.5. 5.12 Check whether the fusible plug of the portable tank meets the requirements of 4.6. 5.13 Check whether the fragile plate of the portable tank meets the requirements of 4.7. 5.14 Check whether the marking of the pressure relief device of the portable tank meets the requirements of 4 and 8. 5.15 Check whether the channel suspension of the pressure relief device of the portable tank meets the requirements of 4.9. 5.16 Check whether the channel of the location of the pressure relief device of the portable tank meets the requirements of 4.10.1. 5.17 Check whether the channel for the location of the portable tank measuring device meets the requirements of 4.11. Check whether the markings of the portable tank support, frame, lifting and fastening accessories meet the requirements of 4, 12. 5.18
6 Identification rules
GB 19454.3--2004
The user of portable tanks shall ensure that the portable tanks they use meet the requirements of this standard, and the relevant inspection department shall make an assessment according to this standard. The user of portable tanks has the right to apply for acceptance and appraisal of the received products according to the provisions of the technical standard. 6.1 Sampling
Sampling shall be carried out according to the sampling quantity specified by the national competent authority. 6.2 Identification items
Identify item by item according to the requirements of Chapter 4 and Chapter 5 of this standard. 6.3 Judgment rules
Identify item by item according to the requirements of the standard. If one sample of each item is unqualified, the item is judged to be unqualified. If one item is unqualified, the batch of portable tanks is assessed to be unqualified.
6.4 Disqualified batch processing
Disqualified portable containers in the unqualified batch shall be removed and submitted for appraisal again, and the strict avoidance shall not change. ：com
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