WS/T 508-2016 in English
VALIDRegulation for washing and disinfection technique of medical textiles in healthc are facilities
- Issued on:2016-12-27
- Implemented on:2017-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
本标准规定了医院医用织物洗涤消毒的基本要求，分类收集、运送与储存操作要求，洗涤、消毒的原则与方法，清洁织物卫生质量要求，资料管理与保存要求。
本标准适用于医院和提供医用织物洗涤服务的社会化洗涤服务机构。
其他医疗机构可参照执行。
Introduction
Infection control standard system for medical fabrics
| Comparison dimensions | Requirements of this specification | Internationally accepted standards | Key differences |
|---|---|---|---|
| Classification management | Clearly distinguish between three categories of infectious/dirty/clean fabrics | Usually divided into infectious/non-infectious categories | Add an intermediate level for dirty fabrics |
| Thermal disinfection parameters | 75℃/30min or 80℃/10min | 71℃/3min is generally used | The time-temperature combination is more stringent |
| Microbial limit value | ≤200CFU/100cm² | No unified standard in many European and American countries | The first quantitative indicator in China |
Technical analysis of core terms
Sanitary isolation washing and drying equipment must meet 6 technical requirements such as double-door design and complete physical isolation. Its core indicators include:
- Air pressure difference ≥5Pa
- Door sealing test leakage rate <0.5%
- Cross-contamination protection level must reach ISO 15883-1 Class S
Practical case of a tertiary hospital
After the implementation of the specification, the qualified rate of infectious fabric treatment increased from 82% to 98%, through:
- Configure tunnel-type washing unit to achieve continuous processing
- Establish a special transport system for orange-red infectious fabrics
- Use ATP bioluminescence detection method for process monitoring
Critical Control Point Implementation Guide
1. Special treatment of infectious fabrics
For fabrics contaminated with special pathogens such as prions, it is necessary to:
| Pathogen type | Pretreatment method | Concentration/time |
|---|---|---|
| Prion | Immerse in 1mol/L NaOH | 60min |
| Gas gangrene | Chlorine-containing disinfectant | 2000-5000mg/L |
2. Optimization of washing process parameters
Temperature control in the main wash stage must comply with:
- Cotton fabric: 70-90℃
- Chemical fiber fabric: ≤60℃
- PH neutralization range: 5.8-6.5
Standard evolution and compliance recommendations
Compared with the 2002 version of the Technical Specifications for Disinfection, this standard has the following three breakthroughs:
- For the first time, the admission standards for socialized washing service agencies were clarified
- A thermal disinfection evaluation system with an A0 value ≥600 was introduced
- Building layout specifications for fabric turnover warehouses
Medical institutions should focus on improving:
- Electronic traceability system for fabric handover
- Quarterly microbiological monitoring mechanism
- Maintenance records of washing equipment (including 500 cycle verification)
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