YY 1885-2023 in English
VALIDNegative pressure isolation cabin for transporting infectious disease patients
- Issued on:2023-06-20
- Implemented on:2025-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
本文件规定了传染病患者运送负压隔离舱的要求、试验方法、标识与使用说明书。
本文件适用于隔离运送传染病患者以防止病原体向外环境扩散的负压隔离舱。
本文件不适用于火灾、核事故、化学物质泄漏等安全事故中伤员转运用的隔离舱。
Introduction
Analysis of core requirements of the standard
| Technical indicators | National standard requirements | International reference standards | Clinical significance |
|---|---|---|---|
| Negative pressure maintenance | ≥20Pa (start-up time ≤2min) | WHO recommends ≥15Pa | Core parameters to ensure that pathogens are not leaked |
| Filtration efficiency | Intake ≥95%, exhaust ≥99.97% | EN 1822 H13 grade | Corresponding to 0.3μm particle retention rate |
| Ventilation rate | ≥15 times/h | CDC recommends 12-15 times | Key indicators for maintaining air cleanliness |
Detailed explanation of key technologies
1. Double-layer protection system
The standard requires that the negative pressure isolation cabin must achieve: physical isolation + air filtration dual protection. Cabin materials must pass:
- Waterproof test (IPX1)
- Corrosion resistance test (5% sodium hypochlorite immersion for 24h)
- 85% light transmittance verification
2. Intelligent monitoring system
The standard requires the following:
- Real-time negative pressure monitoring (error ±3Pa)
- Dual power switching device (automatically enables backup power when external power is off)
- Graded alarm system (low voltage/low battery cannot be shielded alarm)
Implementation and application suggestions
Typical case: Ebola patient transfer
In 2021, an infectious disease hospital used a negative pressure isolation cabin that meets the YY 1885 standard to transfer confirmed patients. The monitoring data showed:
- Maintain -25Pa negative pressure in the cabin
- Ventilation rate 18 times/h
- Exhaust port filtration efficiency 99.998%
Maintenance points
| Components | Maintenance cycle | Precautions |
|---|---|---|
| HEPA filter | Replace after single use | In-situ leak test required |
| Sealing strip | Monthly inspection | Wipe dry in time after disinfection |
| Power system | Charge and discharge quarterly | Maintain more than 50% power |
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