How to clean a used food storage tank?
Cleaning a used food tank is an important part of the assessment for reuse in hygienic applications.
Cleaning needs and methods vary depending on previous use, construction and the products handled in the tank. Common steps may include mechanical cleaning, chemical treatment and in some cases disinfection.
Inspection of welds, seals and internal surfaces is also relevant to assess the condition of the tank and its suitability for continued use.
Measures and requirements may vary depending on the application, and any verification of hygiene requirements is carried out in accordance with the applicable regulations and procedures in the relevant business.
Function and structure
The need for cleaning is influenced by the design of the tank and the components included.
When cleaning tanks, the following elements may be relevant to consider:
- Inner vessel in stainless steel 304 or acid-proof 316/316L, depending on material and previous use
- Welds, flanges and pipe connections where deposits may occur
- Equipment such as agitators and any spray balls in CIP systems
- Insulation and external cladding where the tank is constructed with several layers
The execution and extent of cleaning will vary depending on the tank design, operating conditions and previous use.
Materials and construction
Stainless steel is corrosion resistant and resistant to most cleaning chemicals. When cleaning used tanks, surfaces, welds and seals are checked for damage that could affect hygiene or corrosion resistance.
Pressurized and atmospheric solutions
The cleaning method may vary depending on whether the tank is pressurized or atmospheric and how it is constructed.
Pressurized tanks are often cleaned with controlled CIP systems or other closed cleaning methods, while atmospheric tanks may in some cases be cleaned manually or with spray balls depending on the design.
The choice of method is influenced by the design of the tank, its previous use and the requirements of the process in question.
The performance and results of cleaning depend on the method, equipment and procedures used in the particular operation.
Applications in industry
- Food industry – milk, juices, oils
- Chemical industry – Acids and bases in food production
- Pharmaceuticals – sterile process fluids
- Water treatment – CIP for tanks with process chemicals
Technical options and equipment
- CIP system with spray ball and circulation
- Top or side mounted agitator for mechanical cleaning
- Level and temperature sensors for cleaning temperature optimization
- Insulation for temperature maintenance in hot cleaning solutions
- PLC or SCADA integration for automated cleaning
Volumes and capacity
Process surplus offers tanks in sizes from about 100 liters up to 250,000 liters in various designs.
The need for cleaning and the choice of method will vary depending on the design of the tank, its previous use and the requirements of the process in question.
Cleaning strategy can be customized based on the application, which can affect both hygiene requirements and the use of cleaning agents over time.
Benefits of proper cleaning
- Ensuring food hygiene and microbial safety
- Extending the life of used tanks
- Prevents corrosion and material damage
- Compatible with PED and CE requirements
- Improves operational efficiency and product quality
New and used tanks in stock
Processöverskott offers both new and used tanks in various designs. Some used tanks may be cleaned depending on previous use and handling.
The tanks are used in various types of industrial applications, such as food and pharmaceutical production.
Documentation and inspection data can be included where available and can be used as a basis for assessment prior to further use.
Choice of cleaning method
The choice of cleaning method depends on the type of tank, previous contents and the volume of the tank.
CIP systems are often used for larger tanks and closed systems, while manual cleaning methods may be appropriate in some cases for smaller tanks depending on construction and access.
The choice of method is influenced by the application, hygiene requirements and operating conditions. Available information on tank design and previous use can be used as a basis for planning cleaning.
Executive summary
Cleaning of used food tanks is an important factor when assessing for use in hygienic applications.
The need for cleaning, inspection and possible documentation varies depending on the previous use of the tank, its design and the requirements of the process in question.
Process surpluses offer tanks in different designs where available information on condition, cleaning and previous use can be used as a basis for further assessment.
Any hygiene and verification requirements are handled in accordance with the applicable regulations and procedures in the relevant business.
Frequently asked questions about cleaning used food tanks
How to clean a used food storage tank?
Cleaning of used food tanks is an important factor when assessing for use in hygienic applications.
The need for cleaning, inspection and possible documentation varies depending on the previous use of the tank, its design and the requirements of the process in question.
Process surpluses offer tanks in different designs where available information on condition, cleaning and previous use can be used as a basis for further assessment.
Any hygiene and verification requirements are handled in accordance with the applicable regulations and procedures in the relevant business.
What cleaning methods are used?
CIP with spray balls, circulating hot water or cleaning solution, and manual methods for smaller tanks. The choice is guided by the volume, construction and previous contents of the tank to achieve complete hygiene.
How often should cleaning be carried out?
The frequency of cleaning depends on several factors, such as content, hygiene requirements and operating conditions.
In food applications with a risk of bacterial growth, more frequent cleaning may be required depending on the process and procedures in the business.
Checking welds, seals and other critical parts may also be relevant as part of routine maintenance.
Cleaning intervals and control procedures are normally determined based on the requirements and internal hygiene practices of the process in question.
Can cleaning extend the lifespan?
Yes, proper cleaning can help reduce the risk of corrosion, microbial contamination and seal wear.
This in turn can affect the lifetime of the tank and how the material performs over time, for example for stainless steel 304 or acid-proof 316/316L.
The effectiveness of cleaning depends on the method, operating conditions and procedures applied in the process in question.
What checks are made after cleaning?
After cleaning, welds, seals and internal surfaces can be visually inspected as part of the tank condition assessment.
Any documentation and records of previous cleaning may be available depending on the history of the tank.
If necessary, additional control or sampling may be carried out according to the procedures of the establishment concerned or by an external operator.
Assessment of the suitability of the tank for use in food applications is based on current requirements and internal quality procedures.