HOME / PRESENTATIONS / PROCESS EQUIPMENT STANDARDS FOR HYGIENIC FOOD PLANT DESIGN
Process Equipment Standards for Hygienic Food Plant Design
Introduction: Why Equipment Design Matters in Food Plants
Hygienic design is the foundation of food safety, operational efficiency, and regulatory compliance in food processing facilities. From minimizing contamination risk to reducing cleaning downtime, designing equipment and layouts with hygiene in mind leads to:
- Safer food production
- Faster cleaning and maintenance
- Longer equipment life
- Compliance with GFSI, FSSAI, ISO 22000, and 3-A Sanitary Standards
A seasoned food consultant ensures your plant equipment meets both productivity and sanitation benchmarks.
Key Benefits of Hygienic Equipment Design
- Reduces food contamination risk
- Accelerates cleaning cycles
- Lowers water and chemical usage
- Supports fast equipment disassembly and maintenance
- Improves overall productivity
General Equipment Design Considerations
Key Design Criteria:
Criteria for Hygienic Equipment Design
GFSI (Global Food Safety Initiative) emphasizes hygienic design, especially post-2020 via GFSI JI standards. Equipment should:
- Be cleanable and self-draining
- Have non-porous, non-absorbent, non-toxic contact surfaces
- Use corrosion-resistant materials
- Avoid crevices, cracks, and sharp corners
- Include enclosed threads on adjustment parts
- Ensure top covers are inclined at ≥45° to avoid water/dust accumulation
A food processing consultant helps in sourcing and validating such equipment during the factory planning phase.
Basic Equipment Construction Standards
For Contact Surfaces:
- Polished or lacquered internal surfaces
- Free from sharp edges, welding defects, or pitting
- Designed for easy cleaning and self-draining
For Non-Contact Surfaces:
- Should be smooth, drainable, sealed
- Prefer mild steel or painted steel for cost-efficiency
- Avoid ledges where dust can collect
Pipe and Pipe Rack Standards
Piping systems used for:
- Material transfer
- CIP (Clean-in-Place)
- Drainage
Must follow:
- Self-sloping installation for complete drainage
- Seamless or sanitary-welded joints
- Color-coded for differentiation (product, water, waste)
Equipment Layout and Location Guidelines
Proper layout improves hygiene, safety, and maintenance access.
Consider:
- Easy access for cleaning and servicing
- Logical flow from raw to finished product
- Avoid equipment clusters that block sanitation access
- Place machinery away from walls and drains to reduce contamination risk
Consultants use 3D layout modeling to ensure ergonomic flow, regulatory spacing, and future scalability.
Hygienic Design Reference Standards
Refer to:
- 3-A Sanitary Standards (USA)
- EHEDG (European Hygienic Engineering & Design Group)
- ISO 14159 and ISO 16732-1 for risk reduction
- GFSI JI and FSSC 22000 for global benchmarking
Conclusion: Hygienic Equipment Design Ensures Compliance and Cleanliness
Implementing hygienic standards in process equipment design ensures:
- Enhanced product safety
- Quicker changeovers and cleaning cycles
- Minimal downtime and maintenance costs
A skilled food manufacturing consultant brings expertise in:
- Equipment selection and layout design
- Plant construction and utility planning
- Regulatory compliance for local and export markets
Frequently asked
What makes a piece of process equipment 'hygienically designed' in a food plant?
Hygienic equipment in a food plant must be cleanable and self-draining, with non-porous, non-absorbent, non-toxic contact surfaces and corrosion-resistant materials. It should avoid crevices, cracks and sharp corners, use enclosed threads on adjustment parts, and have top covers inclined at 45 degrees or more so water and dust cannot accumulate. These criteria are emphasised by GFSI, particularly through the post-2020 GFSI JI standards.
Which standards should we reference when specifying hygienic food process equipment?
For hygienic food process equipment, reference the 3-A Sanitary Standards (USA), EHEDG (European Hygienic Engineering and Design Group), ISO 14159 and ISO 16732-1 for risk reduction, and GFSI JI together with FSSC 22000 for global benchmarking. Compliance with GFSI, FSSAI and ISO 22000 is also part of designing equipment and layouts with hygiene in mind.
Do non-product-contact surfaces need the same finish as contact surfaces?
No. Contact surfaces should be polished or lacquered internally, free from sharp edges, welding defects or pitting, and designed for easy cleaning and self-draining. Non-contact surfaces need only be smooth, drainable and sealed, and mild steel or painted steel is preferred for cost-efficiency. Ledges where dust can collect should be avoided on non-contact surfaces.
What are the piping rules for product transfer, CIP and drainage lines?
Piping used for material transfer, CIP (Clean-in-Place) and drainage in a food plant must be installed with a self-slope so it drains completely, use seamless or sanitary-welded joints, and be colour-coded to differentiate product, water and waste lines. Pipe and pipe rack standards of this kind prevent retained liquid and make cleaning cycles faster and more reliable.
How should equipment be positioned on the floor to avoid contamination and cleaning problems?
Equipment layout should give easy access for cleaning and servicing, follow a logical flow from raw material to finished product, and avoid equipment clusters that block sanitation access. Machinery should be placed away from walls and drains to reduce contamination risk. 3D layout modelling is used to confirm ergonomic flow, regulatory spacing and room for future scalability.
What is the commercial payback from investing in hygienic equipment design?
Hygienic equipment design reduces food contamination risk, accelerates cleaning cycles, and lowers water and chemical usage. It supports fast equipment disassembly and maintenance, extends equipment life, and improves overall productivity. The result is enhanced product safety, quicker changeovers, and minimal downtime and maintenance costs, alongside compliance with GFSI, FSSAI, ISO 22000 and 3-A Sanitary Standards.
DOWNLOAD
Download / View →
CITE THIS
PMG Engineering. (2023). Process Equipment Standards for Hygienic Food Plant Design. PMG Engineering. https://pmg.engineering/Presentation/53/process-equipment-standards-for-hygienic-food-plant-design/