Refrigeration equipment in health care facilities is a critical link in the chain of ensuring patient safety. Unlike household appliances, it stores medicines, vaccines, biological samples and food for immunocompromised patients. Any violation of the temperature regime or microbiological cleanliness inside the chambers can lead to damage to medicines and outbreaks of nosocomial infections.
The main task of medical personnel and those responsible for sanitary conditions is regular and proper disinfection of surfaces. The choice disinfectant depends on the type of materials stored and the epidemiological situation in the hospital. Incorrect selection of chemicals may not only fail to destroy pathogenic flora, but also damage seals or plastic structural elements.
In this article we will look in detail at what exactly refrigerators are treated in health care facilities in accordance with current regulatory documents, what washing modes exist and how to properly organize this process in order to pass the Rospotrebnadzor inspection without fines.
Regulatory requirements of SanPiN for refrigeration equipment
The main document regulating sanitary and epidemiological requirements in medical organizations is SanPiN 3.3686-21. It clearly states that refrigerated cabinets must be kept clean and regularly sanitized. Violation of these rules is classified as a gross violation of sanitary legislation.
According to the rules, treatment is divided into current (daily or as contamination occurs) and general (carried out according to a schedule, usually once a week). For each procedure, different concentrations of solutions are used. It is important to understand that disinfection is the destruction of pathogens of infectious diseases, and not just the removal of visible dirt.
⚠️ Attention: In infectious diseases or intensive care departments, the requirements for the frequency and concentration of solutions can be much stricter. Always check the local regulations of your institution.
Monitoring compliance with temperature conditions and cleanliness is the responsibility of the head nurse of the department or a specially designated employee. The results of inspections and cleaning must be recorded in log books, which are required during inspections by supervisory authorities.
Classification of disinfectants for health care facilities
The choice of a drug for treating a refrigerator in a hospital is not accidental. It must have a wide spectrum of antimicrobial action, be safe for personnel when properly diluted, and not leave toxic traces on surfaces in contact with food or drugs.
The most commonly used in health care facilities are products based on chlorine-containing compounds, quaternary ammonium compounds (QACs), alcohols and oxygen-containing components. Each class has its own application characteristics.
- 🧪 Chlorine-containing preparations (for example, "Dezefox", "Javel") - have a powerful bactericidal effect, but can cause corrosion of metals with frequent use and have a pungent odor.
- 🌿 HOUR (Quaternary ammonium compounds) - are often used in combination with alcohols, have detergent properties, are less aggressive to materials, but may be less effective against some viruses without additives.
- 💧 Oxygen-containing products (based on hydrogen peroxide) - environmentally friendly, decomposes into water and oxygen, leaves no odor, ideal for food refrigerators, but requires precise adherence to exposure time.
Why can’t you use ordinary household chemicals?
Household products often contain fragrances and aggressive surfactants, which can be absorbed into plastic seals and transmit the smell to products or medications. In addition, they may not have proven effectiveness against tubercle bacilli or hepatitis viruses, which is critical for hospitals.
Schedule and treatment regimes for refrigeration chambers
The effectiveness of disinfection directly depends on compliance with the treatment regime. Chaotic washing “when you see dirt” in a hospital setting is unacceptable. There are clear regulations, the violation of which carries risks for the health of patients.
Daily treatment is usually carried out wet using a rag soaked in a disinfectant solution. Door handles, exterior panels and, if necessary, shelves are wiped down if liquids have been spilled on them. General cleaning involves completely emptying the chambers, defrosting (if there is no No Frost system) and thoroughly washing all surfaces.
| Type of cleaning | Frequency | Products used | Features |
|---|---|---|---|
| Current | Daily | Solution 0.5% - 1% | Wipe handles and external surfaces |
| General | once a week | Solution 1% - 2% | Complete emptying, washing shelves and walls |
| For infections | According to epidemiological indications | Solution 3% - 6% | Two-time treatment with an interval of 15 minutes |
| On duty (after shift) | Every shift | Solution 0.5% | Cleanliness control in treatment rooms |
The concentration of the working solution must strictly comply with the instructions for the specific drug and the institution’s manual. Exceeding the concentration will not make cleaning “better”, but can damage the equipment, and lowering it will not kill bacteria.
Technology for general cleaning
General cleaning of a refrigerator is a labor-intensive process that requires preparation. Before starting work, you need to prepare marked rags (usually white for the food unit), containers for solutions and personal protective equipment (gloves, mask, apron if necessary).
The first step is always to disconnect the equipment from the power supply and completely empty the chambers. Food and medicine are transferred to a backup refrigerator or thermal containers with cold elements. It is strictly forbidden to leave food at room temperature during washing.
☑️ General cleaning algorithm
The washing process begins with the internal walls, then shelves and drawers, and ends with door seals and the outer part of the case. Particular attention is paid to corners and joints where biofilm most often accumulates. After applying the disinfectant, it is necessary to wait exposure time a period during which the surface must remain wet from the solution to ensure the destruction of germs.
After the exposure time has expired (usually from 15 to 60 minutes depending on the product), the surfaces are thoroughly wiped with clean water to remove chemical residues. This is critical for food refrigerators to avoid toxic substances entering the body of patients.
⚠️ Attention: Do not use abrasive pads or wire brushes to clean the interior. Scratches on plastic become an ideal environment for the growth of bacteria, which will be extremely difficult to wash in the future.
Processing specifics refrigerators for medicines
Refrigerators intended for storing medicines (especially vaccines, insulins, serums) require a special approach. Here the risk of cross-contamination is lower than in food, but the requirements for temperature stability and cleanliness are no less stringent.
When processing such chambers, you should not use products with a strong odor, since some medications can adsorb volatile substances through the packaging. The use of chlorine-containing solutions in high concentrations is also prohibited due to the risk of corrosion of metal elements and damage to labels on ampoules in case of accidental contact.
The optimal choice for pharmaceutical refrigerators are products based on HOUR or hydrogen peroxide. They are odorless, non-aggressive towards plastic and quickly decompose. Before loading medications after cleaning, the chamber must be completely dry and reach operating temperature, which is confirmed by thermometer readings.
Typical errors and quality control
Even with the tools and instructions, staff often make mistakes that reduce processing efficiency to zero. One of the most common problems is using the same rags for different zones or not marking equipment.
Another common mistake is ignoring exposure time. The nurse may wipe down the shelf with the solution and then immediately wipe it dry, thinking she has done better. In fact, the disinfection simply did not have time to take effect, and the microbes remained alive.
- 🚫 Using hot water for defrosting (may damage the evaporator).
- 🚫 Mixing different chemicals (can lead to the release of poisonous chlorine gas).
- 🚫 Lack of ventilation after cleaning (residual chemical vapors can be harmful).
Cleaning quality control is carried out visually (no stains, odors, dirt) and laboratory (bacteriological washes). Flushes are taken from door handles, shelves and seals. If the growth of microflora above acceptable standards is detected in the flush, unscheduled treatment and revision of the cleaning schedule are carried out.
Regular maintenance and proper disinfection extend the life of the equipment. Dirt on the condenser or seals causes the compressor to work with overload, which leads to premature failure of expensive medical equipment.
Can a steam generator be used to treat refrigerators in health care facilities?
The use of steam generators is possible, but requires caution. High temperature is effective in killing bacteria, but hot steam can damage plastic parts and seals if you do not maintain distance. In addition, excess moisture must be completely removed before turning on the appliance. This method is more often used for general cleaning, rather than for daily processing.
What to do if a persistent unpleasant odor appears in the refrigerator?
It is necessary to thoroughly defrost and treat with a 1-2% solution of acetic acid or citric acid after the main disinfection. The use of activated carbon or special odor absorbers designed for refrigerators is also effective. It is important to check the drain hole - often the source of the odor lies in a clogged drain.
How often should you change the wiping solution during cleaning?
The working solution of the disinfectant should be replaced as it gets dirty or according to the instructions for the specific product (usually once per shift or when moving to another refrigerator). Using one bucket of solution for the entire department without replacing it increases the risk of transmitting infection.
Is it necessary to wash off the disinfectant from the internal shelves if they are removable?
Yes, definitely. Even if a product is advertised as “no rinse”, in the context of food and drug storage in a health facility, thorough rinsing with clean water and wiping dry is recommended. This eliminates the chemical interaction of the drug with medicine packages or products.