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.
Getting Started: Canning Methods. Understanding the components and difference of water bath and pressure canning will help you choose which method will work best for you and the foods you choose to preserve. Technique 1: Water Bath Canning. Water bath canning is a shorter, lower-temperature canning process that is ideal for high-acid foods. The high acidity of the foods kills bacteria, allowing for the water bath method. Types of fruits and vegetables ideal for water bath preserving, include: Fruits and fruit juices.