Automated grid storage and retrieval system with foam-based fire prevention system

An automated grid storage and retrieval system comprising:

• a storage grid structure comprising a rail system comprising a first set of parallel rails (110) arranged in a horizontal plane (P) and extending in a first direction (X), and a second set of parallel rails arranged in the horizontal plane (P) and extending in a second direction (Y) which is orthogonal to the first direction (X), which first and second sets of rails form a grid pattern in the horizontal plane (P) comprising a plurality of adjacent grid cells, each grid cell comprising a grid opening defined by a pair of neighboring rails of the first set of rails and a pair of neighboring rails of the second set of rails;
• and
• a plurality of storage columns arranged into a storage grid, each column being arranged to store a respective stack of storage bins wherein the storage columns are located beneath the rail system, wherein each storage column is located vertically below a respective grid opening;
• the system further comprising:
• a plurality of bin handling vehicles that operate on the rail system for collecting and returning storage bins to and from storage columns, and
• a control system for monitoring and controlling the automated grid storage and retrieval system;
• wherein the storage grid structure comprises a plurality of sub grids and a firebreak or firebreaks, wherein adjacent sub grids are separated by the firebreak or firebreaks, and
• wherein a foam dispensing system is arranged in connection with the firebreak for dispensing a fire-retardant foam into the firebreak in the event of a fire.