SN/T 5398-2022 in English
VALIDRules for cold treatment of entry and export fruits
- Issued on:2022-07-07
- Implemented on:2023-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$262.00
Introduction
Analysis of the core content of the standard
This standard specifies the technical specifications for cold treatment of inbound and outbound fruits against fruit fly pests, with the following key points:
- Dual treatment mode: cold storage treatment (Chapter 7.3) and transport container treatment (Chapter 7.4)
- Key temperature parameter: start timing when the fruit core temperature reaches the specified value (such as 0℃, 1.11℃, etc.)
- Probe accuracy requirement: ±0.15℃ (within the range of -3℃~3℃)
Comparison of international cold treatment technical indicators
| Target market | Fruit type | Treatment temperature (℃) | Duration (days) |
|---|---|---|---|
| Australia | Lychee/Longan | 1.0 or below | 15 |
| United States | Citrus | 0.56~1.67 | 18~22 |
| EU | Kiwi | 1.1~2.1 | 14~21 |
Technical Requirements for Key Equipment
Temperature Recording System
Must meet the following requirements:
- Automatically record all probe data every hour
- Store temperature data of the complete process
- Printed records must include probe ID, container/cold storage number
Refrigerated container
Required:
- Overall refrigeration capacity
- Maintain the stability of the set temperature (±0.3℃)
- Pre-cool to pulp temperature ≤4℃ before closing
Operation implementation points
Probe calibration process (Appendix B)
Three-point calibration using ice-water mixture (0℃):
- Crushed ice accounts for 85% of the volume
- Continuous stirring to ensure temperature balance
- Deviation of three readings ≤±0.3℃
Typical problem handling
When temperature fluctuations occur:
- Above the set temperature by 0.3℃: extend the processing time by 8 hours/day
- Above the set temperature by 1℃: reprocessing is required
Background of standard evolution
This standard integrates the requirements of 21 international bilateral agreements (references 1-41), with major technical breakthroughs:
- Unified cold storage and container handling specifications for the first time
- Detailed probe layout plan (illustration in Appendix C)
- Establish a dynamic temperature compensation mechanism
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