SN/T 4952.1-2017 in English
VALIDRules for the weight survey on import and export commodities in the container - Part 1: General rules for weight survey by weighing instruments on cargo in the container
- Issued on:2017-12-08
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
| Standard No: | SN/T 4952.1-2017 |
| Document status: | VALID |
| Title in English: | Rules for the weight survey on import and export commodities in the container - Part 1: General rules for weight survey by weighing instruments on cargo in the container |
| Title in Chinese: | 进出口商品集装箱载货物鉴重规程 第1部分:集装箱载货物衡器鉴重通则 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-12-08 |
| Implemented on: | 2018-07-01 |
| Professional Classification: | SN-Import&Export Inspection |
| Related Keywords: | weight survey
empty vehicle weight loaded vehicle weight net weight weight verification |
| Related Topics: | goods
Import and export goods A total of 5000 boxes of goods Regulations for Weight Appraisal of Imported and Exported Commodity Weighing Apparatus Part 5 Import and Export Commodity Weighing Appraisal Part 5 export collector plant box weight Container cargo securing requirements sn/t 4953-2017 sn/t 4972-2017 sn/t 4921-2017 |
Introduction
Analysis of the standard technical framework
This part of the standard applies to the weighing of container cargo by electronic truck scales and railway scales, and explicitly requires that the accuracy of the scales must be better than 0.2%, and the accuracy level should meet the Class III scale standard. The main technical parameter requirements are as follows:
| Technical indicators | Verification requirements | Requirements in use |
|---|---|---|
| Allowable error (0-500d) | ±0.5d | ±1.0d |
| Allowable error (500-2000d) | ±1.0d | ±2.0d |
| Repeatability error | ≤1.0d | |
Selection of weight identification method
Double weighing method
The net weight is calculated by weighing the loaded vehicle weight (WH) and the empty vehicle weight (WTE), and deducting the weight of the packaging (WPD):
WN = WH - WTE - WPD
One-time weighing method
A vehicle information management system needs to be established to retrieve the empty vehicle weight (WT) and instant fuel volume (WO) from the database:
WN = WH - WT - WO - WPD
Typical case: A port adopts the one-time weighing method for imported iron ore. Through the pre-registered data of 200 container trucks, the daily average weighing efficiency is increased by 40%
Implement key control points
- Weighing instrument management: the calibration cycle shall not exceed 6 months, and frequent use shall require calibration every 3 months
- Vehicle requirements: vehicle speed ≤ 3km/h, overlong vehicles need to be weighed by changing vehicles
- Data verification: adopt the two-read and one-record system, and digital instruments need to be triple-checked
Weight calculation specifications
| Pricing method | Calculation formula | Applicable scenarios |
|---|---|---|
| Net weight settlement | WN=WG-WPD | General trade goods |
| Dry net weight | WDN=WWN(1-MC) | Hygroscopic goods |
Background of standard evolution
With the increase in the proportion of container transportation, the 2017 version of the standard established a vehicle information management system for the first time to solve the efficiency bottleneck of the traditional two-time weighing mode in cross-border transportation. Compared with the 2003 version of the "Regulations on the Weight Verification of Import and Export Commodities", the following are added:
- Standardized definition of marked weight of containers
- Mandatory requirements for video monitoring of electronic truck scales
- ABCD four-level classification management system for transportation companies
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