Method 1Continuous or Batch Pressure
Reduction
1. If the particle size of the animal by-products to be rendered is more than 50 mm, the animal by-products shall be reduced in size using equipment specified in the approval, set so that the particle size after reduction is no greater than 50 mm or such smaller size as the approval shall specify. The effectiveness of the equipment shall be checked daily and its condition recorded. If checks disclose the existence of particles larger than is permitted in the approval, the process shall be stopped and repairs made before the process is resumed.
Time and temperature
2. After reduction the animal by-products shall be heated to a core temperature of more than 133°C for at least 20 minutes without interruption at a pressure of at least 3 bar.
3. The rendering may be carried out in batch or continuous systems.