A Practical Guide for a Safe Start to Production

After extended shutdowns such as holiday periods, the reopening of businesses doesn't just mean starting up the machines or initiating the production plan. Production areas, food contact surfaces, process lines, warehouses, floors, laboratory equipment, and chemicals used must be re-checked.

In areas that have not been used for a long time, dust accumulation, odor formation due to moisture, microbial risk on surfaces, water residue that has been standing in the lines, soiling on the floors, and deterioration in chemical packaging may be observed.

Therefore, a short but systematic hygiene check on the first working day after the holiday is critically important for businesses.

This guide has been prepared to help your business resume operations safely, regularly, and in a controlled manner.

1. Conduct a General Observation Before Entering the Production Area

The first post-holiday inspection should begin with a visual inspection before applying any chemicals. The general condition of the area, odor, humidity, dust accumulation, and surface appearance should be assessed. should be evaluated.

The main points to be checked are:

• Formation of moisture or bad odor in enclosed areas

• Dust, oil, marks or slipperiness on floors

• Stains, dullness or residue on stainless steel surfaces

• Odor or accumulation in drainage channels

• Dust accumulation on exposed equipment

• Packaging integrity in warehouses and leak control

The aim at this stage is not to proceed directly to disinfection; it is to first determine which area needs which cleaning process. Because in industrial hygiene, the correct result begins with the correct diagnosis.

2. Evaluate Food Contact Surfaces Separately

In food production areas, countertops, filling lines, mixers, boilers, conveyor belts, tanks, pipelines, and packaging surfaces require special attention. On these surfaces, not only visible dirt but also the possibility of microbial risk and chemical residue should be considered.

The cleaning approach for food contact surfaces should generally be evaluated in the following order:

1. Removal of physical dirt

2. Cleaning of grease, protein or organic residues

3. Performing appropriate disinfection procedures

4. Performing residue control if necessary

At this point, peracetic acid-based hygiene products are used in food production areas, CIP/SIP systems and process surfaces. It can be considered a strong option. However, in every business, the correct product selection should be made taking into account the surface type, type of contamination, contact time, rinsing requirement, and process safety.

Especially after a long holiday, it is not enough for the surfaces that come into contact with food before the first production to simply look clean. The cleaning process must be carried out in accordance with process safety and verified if necessary.

3. Check for Stagnant Water and Residue Risk in CIP/SIP Lines

During long holiday periods, CIP/SIP systems, tanks, pipelines and dosing systems may remain inactive for a while.

During this waiting period, any remaining water, product residue, or cleaning chemicals should be re-evaluated for process safety.

Main points to check:

• Is there any stagnant water in the line?

• Has any odor developed in the tanks and pipelines?

• Could there be any residue from the previous cleaning chemical?

• Are the dosing pumps and connections operational?

• Is rinsing necessary before the first cycle?

• Residue after disinfection Should control be performed?

In CIP/SIP applications, the selection of foam-free, controlled, and process-appropriate chemicals is important. Especially for food, beverage, dairy products, filling lines, and closed systems, the dosage, contact time, and rinsing procedure of the products used should be determined according to the operating conditions.

In the first cycle after the holiday, it should be checked not only whether the system is working, but also whether it is hygienically suitable for a safe start.

4. Don't Neglect Flooring, Walls and Drainage Areas

The most important thing in post-holiday businesses is...

One of the most overlooked areas is the floor and drainage points. Even when production is not taking place, moisture, dust, and organic residues can accumulate in enclosed spaces. This situation can create odor and hygiene risks, especially in food facilities, industrial kitchens, production areas, and warehouses.

The cleaning approach varies depending on the type of contamination:

• Alkaline cleaning approach for grease and protein-heavy stains

• Lime and acidic cleaning approach in mineral deposits

• Surface-appropriate general cleaning approach on sensitive surfaces

• Appropriate disinfection approach in areas with microbial risk

Floor and drain cleaning should not be evaluated solely from a visual cleaning point of view. These areas are an important part of the internal hygiene chain of the facility. Drainage points, especially those near production areas, should be checked for bad odor and microbial load.

5. Check Your Chemical Stocks

After the long holiday, not only production areas but also chemical stocks should be checked.

Improper storage, temperature changes, loosening of the lid, or packaging damage can affect product performance and safety of use.

The following points should be considered in chemical stock control:

• Is there any swelling, leakage, or deformation in the packaging?

• Are the lids tight and secure?

• Are the labels legible?

• Is the expiry date of the products correct?

• Are the products in their original packaging?

• Acids, alkalis, oxidants, and disinfectants are properly separated. is it?

• Does the staff know which product to use where?

Just as the selection of chemicals is critical for operational safety, so is the correct storage of chemicals and their use in the right area by the right personnel.

A product that is stored incorrectly or whose label is not read can pose a risk within the workplace, even if it has the correct formulation. Therefore, the chemical stock area must be checked after the holiday.

6. Re-prepare Laboratory and Quality Control Areas

Laboratories, test kits, reagents, and measuring equipment should not be used without being checked upon return from vacation.

Solutions, test kits, and equipment maintenance products used especially in quality control processes are important for process safety.

Main points to be checked:

• Expiration date of test kits

• Condition of caps and packaging of reagent bottles

• Color change or precipitate formation

• Suitability of calibration solutions

• Sufficiency of equipment washing and maintenance solutions

• Sample containers cleanliness

• Measurement equipment must be in working order

A brief preparation in quality control areas after the holiday can prevent measurement errors and misjudgments that may occur during production.

It should be ensured that the products used, especially in areas such as residue control, pH control, disinfectant concentration, washing performance and process water controls, are in the appropriate condition.

7. A Brief Introduction for Personnel

Inform them

One of the biggest mistakes made on the first workday after a holiday is assuming everyone will immediately return to their old routine.

However, after a long break, it is beneficial for staff to receive a brief reminder about the cleaning plan, product usage areas, and safety rules.

The following topics may be included in the staff briefing:

• Which product will be used in which area?

• Which products should not be mixed?

• Which surfaces require rinsing?

• In which areas should protective equipment be used?

• Who will perform the post-cleaning check?

• How will application records be kept?

• Emergency spill or What to do in case of misuse?

This approach provides advantages to the business in terms of both occupational safety and process standardization. The first day after the holiday is a good opportunity not only for operational resumption but also for reminding hygiene procedures.

8. Practical Control Table for the First Day After the Holiday

9. Basic Evaluation Criteria for Choosing the Right Chemical

When preparing a post-holiday cleaning plan, one should not only ask “what products are available?”. A more accurate approach is to ask “what cleaning needs does this area have?” It is important to start with the question:

The following criteria should be considered in chemical selection:

• Type of contamination: oil, protein, lime, mineral, rust, biofilm or microbial risk

• Surface type: stainless steel, plastic, glass, ceramic, aluminum or painted surface

• Application method: manual cleaning, immersion, spraying, foaming, CIP/SIP or automatic dosing

• Rinsing requirement: whether it is a food contact surface or process line not

• Safety of use: suitability in terms of personnel, equipment and environment

• Need for control: residue or performance verification after application

In industrial cleaning, it should not be expected that a single product will be the right solution in every area. Successful hygiene management is achieved by selecting the appropriate product and procedure together for each area.

Conclusion: A Safe Start Begins with the Right Control

For businesses to safely resume operations after the holiday, general cleaning alone is not enough. The right approach is to observe the area, identify the type of contamination, select the appropriate chemical, and apply it in a controlled manner. to perform and, if necessary, carry out residue or hygiene verification.

As Colin Academy, our recommendation is to consider the first day after the holiday as a “controlled start day”. This approach increases production safety, reduces hygiene risks and allows the business to start the new period more orderly.

For industrial cleaning, disinfection, process hygiene, residue control and special application solutions, Colin Kimya’s professional product groups can be examined.