Standard Operating Procedure (SOP)

1.0 Objective

To lay down the procedure for cleaning the Fluidised Bed Dryer (FBD) to ensure proper hygiene and avoid cross-contamination between products or batches.

2.0 Scope

This SOP applies to the cleaning of the FBD located in the production area of [Company Name].

3.0 Responsibility

4.0 Definitions

• FBD: Fluidised Bed Dryer, used to dry granulated materials.

• Product Changeover Cleaning: Cleaning required when changing from one product to another.

• Batch Change Cleaning: Cleaning required between batches of the same product.

5.0 Materials and Equipment Required

• Approved cleaning agents (detergents, purified water, disinfectants)

• Clean lint-free cloths

• Nylon brushes

• Buckets

• PPE: gloves, apron, mask, goggles

• Cleaning status label (“Cleaned” / “To Be Cleaned”)

• Cleaning logbook

6.0 Procedure

6.1 Safety Precautions

• Ensure the equipment is switched OFF and power supply disconnected.

• Wear proper PPE during the entire cleaning process.

• Ensure the area is clean and no material is exposed.

6.2 Type of Cleaning

A. Batch-to-Batch Cleaning (Same Product)

1. Switch off and isolate the power.

2. Remove the product container and filter bag.

3. Wipe the inner chamber, bowl, and container with a dry lint-free cloth.

4. Check for any residual granules or dust; remove with a dry brush if needed.

5. Clean the control panel and outer surfaces with a damp cloth.

6. Reassemble the components and label as “Cleaned.”

B. Product Changeover / Deep Cleaning

1. Switch off and lock the power supply.

2. Dismantle the following:

   • Product container

   • Bowl

   • Filter bag

   • Air filter (if applicable)

3. Clean all parts using approved detergent solution and a nylon brush.

4. Rinse thoroughly with purified water.

5. If required, disinfect with an approved disinfectant.

6. Dry all parts with a lint-free cloth or air dry in a clean area.

7. Wipe the inner and outer body of the FBD.

8. Inspect all areas for cleanliness.

9. Reassemble the equipment.

10. Affix the “Cleaned” label with date, time, and signature.

7.0 Cleaning Frequency

• Batch-to-batch: After every batch of the same product

• Product-to-product: Before switching to a different product

• Weekly / Preventive: If not used within a set period

8.0 Documentation

Record the following in the FBD Cleaning Logbook:

• Date & time of cleaning

• Type of cleaning

• Product name / batch

• Equipment ID

• Operator & supervisor signatures

• QA verification (if applicable)

9.0 Abbreviations

• FBD: Fluidised Bed Dryer

• SOP: Standard Operating Procedure

• PPE: Personal Protective Equipment

• QA: Quality Assurance

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