This is the first step in designing a continuous caster. First, the product end-use dictates the quality, grade and shape of the cast product (billet, bloom, slab, beam blank, and/or round). Considerations are then made based on desired annual tonnage, liquid steel availability, and anticipated operating hours.
Accessing definition, the ability, right, or permission to approach, enter, speak with, or use; admittance: They have access to the files. See more. Dictionary.com
Authentication is the process of ascertaining that somebody really is who he claims to be. Authorization refers to rules that determine who is allowed to do what. E.g. Adam may be authorized to create and delete databases, while Usama is only authorised to read.