Hygienic specifications of hospital linen washing (Beijing local standard)



    1, scope

    2, normative references

    3, terminology

    4, sensory index

    5, Microbe

    6, washing linen departments and health management

    7, sampling and detection methods

    8 emissions of pollutants


     the standard 4th and 5th. 3.2, section 5.4, 5th 7.2., 7th. 2.1, section 7.3, 7th 5.1., 7th. 5.2, 7th 5.3., 7th. 5.6, 7.5.6B), 8th. 1.1, the mandatory provisions of article 8.2, the rest being recommended articles.

     in accordance with GB/1.1-2009 the rules given to the drafting of this standard.

     the standards proposed by the Beijing Municipal Health Bureau.

     the standard is centralized by the Beijing Municipal Health Bureau.

     standard implementation organized by the Beijing Municipal Health Bureau.

     the standard drafting unit: people's Hospital of Peking University, the Beijing Zhongguancun international environmental industry promotion center.

     main drafters of this standard: Wu Yinghong, and Qiu Dalong, and Sook-Yin Lee, and Deng Xiaohong, Dai Zizhu, and Zhong Xiuling, Topaz, Liu Rong, and Xu Zhonglin, and Xu Yun, and Jin Weiwei, and Fang Xiaodong, and Lv Chaoying, and Peng Tianya, and Han Chengyan, and Li Xuejun, and Xue Qinling.

    1, scope

     provisions of this standard reusable linen washing the organoleptic, bacterial indicators, sampling methods, and the hygiene control regulations.

     This standard applies to hospital linen washing sector and for washing and disinfection of hospital linen washing service.

    2, normative references

health standard for     GB15982-1995 disinfection in hospitals

    GB/T18883-2002 indoor air quality standards

    GB/T18204.1~18204.30-2000 standard test methods for public health

    GBZ2-2002 workplace hazardous factors of occupational exposure limit values

    3, terminology

    3.1  hospital linen hospital textiles

     all the fabric is washed in the hospital, including clothing, sheets, Ward linen overalls, surgical towels, medical personnel and so on.

    3.2  standard prevention standard prevention

     found that the patient's blood, body fluids, secretions, excretions are contagious, isolation, regardless of whether there is a significant pool of blood contamination or exposure to non-intact skin and mucous membranes, exposure to these substances must take protective measures; its basic characteristics are: (1) to prevent the spread of blood-borne diseases, and to prevent the spread of blood-borne diseases. (2) emphasizes two-way protection. Both prevent the disease from the patient to the medical staff and prevent diseases from being transmitted to patients by medical personnel. (3) in accordance with the main route of transmission of the disease, taken isolation measures, including insulation, air and droplets (particles) isolated.

    3.3  washing and disinfection services washing disinfection services

     for the Community (medical institutions) provide potentially contaminated linen washing and disinfection services providers.

    4, sensory index

     linen look clean, water-free, stain-free.

     no smell.

     for foreign material, no damage.

    5, Microbe

     washed linen microbiological indicators should meet the requirements of table 1.

table  1   microorganism index




total bacteria

pathogenic micro-organisms


not detected


    6, washing linen departments and health management

    6.1  wash sector (housing) layout requirements

    6.1.1  washing departments should strictly according to the functional area, including polluted areas (counting, sorting, cleaning and waste storage) and clean (drying, ironing and mending, folding, storage, delivery and clean car storage), two districts should have the actual isolation barrier, should be clearly identified.

    6.1.2  workflow rational: people, materials should be separate clean and dirty. Logistics → washing → drying ironing cleaning clothing store from dirty to clean, smooth through, not flush.

    6.2  cleaning and environmental hygiene requirements

    6.2.1  washing sector should set up more than 10 meters away from the garbage disposal station, near no harmful gases, smoke, dust, and other harmful goods. Environment without mosquitoes, flies and other pests breeding ground; no cockroaches and other pests within the workspace.

    6.2.2  area floors, walls and countertops should be smooth, not dust, easy to clean. Maintain clean work surface bacterial colonies total number ≤ 1500cfu/100cm2.

    6.2.3  wash sector (housing) to maintain good air circulation to keep the air flow from clean to polluted areas, requiring reference to GBZ2-2002 and GB/T18883-2002 implementation.

    6.2.4  when the object table and floor may be obvious blood, body fluids, secretions or contaminated should cover in a timely manner, collected after disinfection 60min, clean up, and then use the active chlorine content of 500mg-700mg/l disinfectant wipe.

    6.3  washing hygiene requirements

    6.3.1  washing process consists of sorting, washing, drying, ironing and mending, folded, and six programs.

    6.3.2  when sorting according to different sources of linen, linen linen into patients and staff. Patient linen including linen, there is obvious pollution of the linen and baby linen.

    6.3.3  washing requirements: baby's room, delivery room, operating rooms and other key Department of linen should be stand-alone cleaning; linen and linen should be an extension of patients by medical personnel cleaned or cleaned in batches; there is obvious pollution of the linen should be cleaned here.

    6.4 wash cycles including pre-wash, washing, rinsing, neutralization, finishing five steps.

    6.4.1  load level

     is a laundry container and dryer weight ratio, load appropriate for every 10L wash 1kg clothes (for 10:1).

    6.4.2  pre wash

     pre wash is water with a temperature not exceeding 35 ℃ removes water soluble dirt of washing process. Pre wash at low temperature, high water levels. Pre wash time should not be less than 10 minutes.

    6.4.3  main

     according to washing the linen of pollution adding alkaline, detergent or emulsifier.  washing method  hot wash method: 70 ° c for 25 minutes, 90 c for 10 minutes.  cold washing method: active chlorine content of 250mg-400mg/l disinfectant soaking 20min above, cold wash to remove organic matter.  stain type cannot be determined, local stains you should take the following procedure.

    a) with detergent.

    b) use organic solvents, such as acetone or alcohol.

    c) using an acidic solution, such as sodium fluoride, hydrogen fluoride ammonia if small stains, using laboratory-grade hydrochloric acid solution.

    d) temperature solution using reducing agents or stripping agents, such as continuous two sodium sulfite or sodium bisulfite.

    e) using oxidants such as sodium hypochlorite (liquid bleach) or hydrogen peroxide.

     the washing procedure should be carried out according to the given order. Grass cloth between each step should be full of water.

    6.4.4  rinse

     dilution method to remove all suspended in the linen stains and residues of chemical agent, rinse should not be less than 3 minutes at a time, once every rinse interval should be dehydration, rinse the number should not be less than 3 times.

    6.4.5  neutralization

     acid in water for the last time and residual alkali. Neutralized the pH value of the water should reach 6.5-7.4.

    6.4.6  process

     iron, patch grass cloth, folded after cleaning process to prevent contamination. Grass cloth in order to avoid excessive damage and shrink, flat-iron base temperature should not exceed 180 ℃.

    6.5  linen storage and transportation requirements

    6.5.1  contaminated linen and clean linen should not resort to the same vehicle and transport. Transporting over contaminated linen should be disinfected in a timely manner.

    6.5.2  linen should be closed, transport of pollution and prevent environmental pollution.

    6.5.3  contaminated linen transport packaging, packaging materials must be nontoxic, harmless. Contaminated linen and clean linen packing should not mix, clean linen packing and shipping process is necessary to prevent contamination.

    6.5.4  clean linen should be stored in a clean dry place, should prevent contamination during storage (that is, smoke, dust, moisture and parasites).

    6.6  staff health requirements

    6.6.1  pollution in installed capacity sorting and cleaning staff, and to enforce a rigid standard precautions.

    6.6.2  clean staff were drying, ironing, folding, in the issuance process should keep hands clean, linen pollution prevention.

    6.6.3  dysentery, typhoid, tuberculosis, diarrhoeal diseases, and purulent or exudative skin disease should not participate in direct contact with grass cloth.

    6.6.4  staff engaged in washing, you should regularly (once a year) health check washing and disinfection services health training should be provided and examinations before they can post.

    7, sampling and detection methods

    7.1  washed linen microbial detection: Appendix a to refer to GB15982-1995.

    7.2 PH test method: the test paper method.

    8 emissions of pollutants

     washing and disinfection services of discharge pipes should be sealed, should not specify row. Sewage, waste disposal should meet the national emission standards.