Lighting Challenges in Cold Rooms and Blast Freezers

› Cold Rooms and Blast Freezers

For fish manufacturers, maintaining product quality and safety in cold storage and freezing operations is critical. Cold rooms and blast freezers allow fish like salmon, tuna, and other oil-rich species to be stored and processed at extremely low temperatures. However, these sub-zero environments present unique lighting and operational challenges that can affect inspections, worker safety, and overall efficiency.

The Cold Room Challenge

Cold rooms typically maintain temperatures between -2°C and -20°C, but even at these temperatures, lighting systems face several hurdles:

• Material Durability – Standard fixtures can become brittle in sub-zero temperatures, causing housings or diffusers to crack.
• Condensation and Moisture – Frequent access leads to humidity spikes and condensation, which can fog lenses, corrode components, or cause electrical failures.
• Consistency of Illumination – LEDs and other light sources may dim or shift in colour at low temperatures, affecting visual inspections of delicate fish products.
• Worker Safety – Slippery floors and stacked crates require even, glare-free lighting to reduce accidents.
• Longer Freezing Times for Oil-Rich Fish – Fish like tuna and salmon are high in fat, making their flesh denser and slower to freeze. This means they spend more time in cold rooms and blast freezers, making accurate inspection and careful handling under proper lighting even more critical.

The Blast Freezer Challenge

Blast freezers operate at even lower temperatures, sometimes -40°C or below, to freeze fish rapidly and preserve freshness. These extreme conditions amplify the challenges:

• Thermal Stress on Fixtures – Cold and rapid temperature changes can accelerate wear or failure of lighting equipment.
• Reduced LED Performance – Flicker, dimming, or colour shifts can interfere with inspection or automated systems.
• Visibility in Large Spaces – High ceilings or dense racks of products require careful lighting design to eliminate shadows.
• Critical Monitoring for Oil-Rich Fish – Since fatty fish take longer to freeze, proper illumination is essential to monitor product quality during extended freezing periods.

Operational Solutions for Fish Manufacturers

Manufacturers can address these challenges with specialized cold-rated lighting solutions:

• LED Lighting – Maintains brightness and colour rendering in sub-zero temperatures, is energy-efficient, and long-lasting.
• High-Bay and Linear Fixtures – Provide even illumination for large or tall cold storage and blast freezing areas.
• Sealed, IP-Rated Fixtures – Prevent moisture ingress and protect against corrosion or cleaning processes.
• Sensor-Integrated Systems – Motion or ambient-light sensors reduce energy use while maintaining consistent illumination.
• Flexible Mounting Options – Ceiling, wall, or under-shelf installations ensure targeted lighting without shadows.

Introducing the Sammode BERING Low-Temperature Fitting

While lighting ensures visibility and inspection accuracy, handling systems must also operate reliably at extreme low temperatures. The Sammode BERING Low-Temperature Fitting is engineered for deep-freeze tunnels and cold rooms down to -60°C, providing a complementary solution for fish manufacturers:

• Hermetic Sealing – Reinforced silicone seals locked by axial clamping maintain airtight protection, even under extreme temperature fluctuations or high-pressure cleaning.
• Quick-Disconnect Connector – Frost- and shock-resistant resin contacts prevent any penetration of humidity.
• Smooth, Linear Motion – Reliable movement protects delicate fish during handling and freezing.
• Reduced Maintenance – Built for continuous operation in the harshest cold environments, reducing downtime.

By integrating engineered lighting solutions with the Sammode BERING fitting, fish manufacturers can ensure both safe, efficient inspection and reliable product handling — critical when oil-rich fish take longer to freeze.

Conclusion

For fish manufacturers, cold rooms and blast freezers present unique challenges for both lighting and operational reliability. Proper illumination ensures worker safety and accurate inspection, while the Sammode BERING Low-Temperature Fitting guarantees smooth, reliable handling of products that require extended freezing. Together, they support product quality, operational efficiency, and safety, even in the harshest freezing conditions.

Lighting and motion in extreme cold aren’t luxuries — they are essential tools for protecting products, people, and processes.