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Novo Nordisk
LogiMat Automated Cold-store Warehouse

Novo Nordisk  Case Study

Novo Nordisk is a world leader in diabetes care with insulin products as well as systems for dosing of insulin. With 26,000 employees almost 50% are working in Novo’s home country, Denmark, Novos products are represented in 180 countries.

Expansion required new ways of thinking

In Novo Nordisk Denmark, raw materials, and bulk insulin is stored for further distribution abroad. The storage facilities needed to be extended, storing 4 times more insulin in a -20°C coldstore. At the existing store employees had to enter the coldstore to manually pick the small 2 kilos container with bulk insulin – a cold and uncomfortable job.Tonny Tesdorph Sørensen, Project Leader, was responsible for the expansion and as the physical conditions were very limited he had to work creatively on a solution. Novo Nordisk A/S was looking for an automated warehouse system for use in a coldstore.

Together with the partners Handler (Scandinavias largest supplier of LogiMat automated warehouse equipment) and Munters (dehumidifiers) a completely new warehouse system was invented. The three companies built a system based on the LogiMat vertical lift system (automated warehouse sealed into a huge box). To make the system fit into the limited space the floor was excavated and the lift continues 1.2 m below floor level.

Novo Nordisk  Case Study

The temperature in this system and the storage room behind is kept constant at -20°C. When the raw material is shipped to factories around the world, the containers are packed on pallets with dry ice, securing the high product quality is kept during transportation.

The LogiMat lift itself can contain more than 9,000 plastic containers each filled with about 2 kg bulk insulin. Behind the lift system, 120 pallets form a buffer store.

When employees need to pick items from the warehouse, they enter a code for the product needed on a digital panel at the front of the door. The sliding door on the front of the lift opens and the products are delivered – moved from the cold stores -20°C to the packing rooms +20°C without any employee entering the storage. Because of the big difference in temperatures in the opening of the lift system where the insulin containers are delivered, condensation would create severe ice build ups. Ice build ups would occur not only on the products itself, but also on the lift system, the gearwheels would become covered with ice and eventually malfunction.

No lift system possible without dehumidification

It was obvious from the beginning that dehumidification would be decisive for the functioning of the system.
Two Munters ML690 dehumidifiers were installed above the store. One dehumidifier is supplying dry air to the inner of the vertical lift system where 2 fans distribute the dry air evenly. A slight overpressure prevents ambient air to penetrate into the lift system.

All ductwork within the lift system was specially designed and all made in stainless steel with built-in LED light.
The other ML690 supplies dry air to the entrance of the store. Dry air is blown into the lock – preventing condensation when the door is opened during transport of goods into the warehouse.

Without dehumidification ice build up would create problems like slippery floors, fog, ice on products, walls, and ceilings and regular de-icing would be necessary. The two ML690's are functioning with modulating effect, controlled by sensors to keep a dewpoint at -20°C or below– securing that the water content in the air of the system is so low, that condensation never occurs.

Novo Nordisk  Case Study

Novo Nordisk A/S has been positively surprised, not only because of the very short time used for development and installation of the whole system, but also by the big advantages they face. Employees very much appreciate the fact that they don’t have to enter the cold store any longer. Safety problems with wet and slippery floors are avoided and the picking procedure itself is very time saving.

Award for innovative thinking

Tonny Tesdorph Sørensen has been awarded the “Novo Nordisk Occupational Health & Safety Award 2007” for this project innovation and consideration for employees comfort and safety. “This project is a major success and we expect it to be copied to our other storage facilities around the world, who can take advantage of the experience. How effective the Lifts and dehumidification is was illustrated clearly during the assembling of the lift system. Some mistakes were made and the floor was covered by water which needed to be got rid of immediately. Munters recommended us to switch on both dehumidifiers and next morning when the cleaning company arrived for removing the water it was already gone! Convincing".

The system ensures:

  • Optimal conditions for storage of high-value bulk insulin
  • No condensation on products during picking from chilled store
  • Comfortable and safe working environment for employees
  • Optimal conditions for cooling system performance
  • No need to de-ice evaporators

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