Arc Flash Boundary (ARC) - is the distance at which an electrical arc can flash. outward, which may endanger employees working on electrical equipment. Flash Protection Boundary (FPB) - theJcalculated safe working distance from. electrical equipment which would not expose the employee to the hazards.
One advantage of freeze drying is that food preserved in this method can last longer than food preserved in virtually any other way. Freeze dried foods, if stored properly, can last for years, even decades, and taste exactly as they did the day they were bought fresh.
The first stage of freeze drying is to freeze the food in conventional freezing. equipment. Small pieces of food are frozen rapidly to produce small ice crystals and to. reduce damage to the cell structure of the food (Chapter 21). In liquid foods, slow.