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SN/T 4791-2017: Gas-tightness test standard of entry-exit container treated by fumigation
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 4791-2017 | English | 149 |
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Gas-tightness test standard of entry-exit container treated by fumigation
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SN/T 4791-2017
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PDF similar to SN/T 4791-2017
Basic data | Standard ID | SN/T 4791-2017 (SN/T4791-2017) | | Description (Translated English) | Gas-tightness test standard of entry-exit container treated by fumigation | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | A85 | | Word Count Estimation | 5,548 | | Date of Issue | 2017-05-12 | | Date of Implementation | 2017-12-01 | | Regulation (derived from) | State-Quality-Inspection-Accreditation (2017) 228 | | Issuing agency(ies) | General Administration of Customs | SN/T 4791-2017: Gas-tightness test standard of entry-exit container treated by fumigation---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.
(Standard for Testing Airtightness of Fumigation in Entry and Exit Containers)
People's Republic of China entry and exit inspection and quarantine industry standards
Entry and exit container fumigation treatment air tightness testing standard
Released on.2017-05-12
2017-12-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard refers to the latest release of the Australian Department of Agriculture
"Methyl bromide fumigation standard", combined with the actual situation of sulfuryl fluoride fumigation in China port,
Prepared on the basis of on-site research.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted. Ningbo Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Zheng Jianning, Sun Zhiming, Li Xuelian, Hu Yi, Li Jie, Huang Yuanyuan, Zhou Jun, Huang Wei, He Zheng, Wu Jinxi.
Entry and exit container fumigation treatment air tightness testing standard
1 Scope
This standard specifies the equipment, testing procedures and criteria for airtightness testing of fumigation-imported inbound and outbound containers.
This standard applies to the airtightness test of fumigation treatment with sulfuryl fluoride or methyl bromide in inbound and outbound shipping containers.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Gas tightness test gas-tightnesstest
By injecting compressed air into a sealed container, the pressure difference between the gas inside and outside the tank is changed, and the gas is inspected in the container and each
The degree of leakage between parts of the structure to determine its air tightness.
2.2
Finger manifold fingermanifold
A special tool made of copper hose with 12 tubes similar to "finger", 9 of which are used to deliver compressed air to the container.
The other three are used to measure the pressure in the container and can be properly deformed as needed.
2.3
Vent vent
A device for exchanging gas inside and outside the tank.
3 testing equipment
Instruments that measure pressure decay time include.
a) compressed air pump or bottled compressed air;
b) a finger manifold;
c) Pressure difference meter (range ≥100Pa, accuracy ≤1Pa);
d) Stopwatch (accuracy 0.1s).
4 Container inspection and sealing
4.1 Containers should be placed on a flat surface to prevent the effects of distortion or deformation on the sealing performance of the door.
4.2 Before performing pressure test, the container box should be inspected and required to have a good structure. There are no obvious holes, cracks and twists on the side walls, end walls and box tops.
The deformation is curved, the door is in close contact with the door frame and the door sill, the rubber sealing strip around the door is not damaged and the hole is obvious, and the bottom plate is dry and ignorant.
Signs of damage.
4.3 Containers with the following conditions, unsuitable for cooperation stress test.
a) a container with any gaps;
b) a container whose structure is deformed, damaged or the door is not tightly sealed;
c) Containers with wet or damaged floors.
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