# Asset Management ## The physical asset hierarchy Enelyzer follows the **ISA-95 (S95) standard structure** for modelling business assets. The S95 equipment model defines a hierarchy of logical entities that represent different aspects of production.

### **Hierarchy Mapping in Enelyzer** * **Enterprise** * Represents an entire company or a division within a company. * **In Enelyzer:** represented as a **Facility**. * **Site** * A physical location of a business unit within the company. * **In Enelyzer:** represented as a **Building**. * **Area** * A physical location within a Site that encapsulates a certain aspect of production. * **In Enelyzer:** represented by a **Building Unit**. * **Work Centers** * Entities below Area, such as **Process Cells, Production Units, Production Lines, and Storage Zones**. * Groupings of equipment that you want to report on, control, schedule, or otherwise treat as logical entities within an Area. * **In energy management applications:** ideally each work center contains one or more (energy consumption) sensors. * **In Enelyzer**: only active in the Business Activity module, represended by a **Work center**. * **Work Unit** * A smaller logical grouping of equipment for reporting, scheduling, or controlling execution. * **In Enelyzer:** represented as a **Machine Group**. * A Machine Group can contain other Machine Groups or Machines. Examples: * A **Cooling installation** is a Machine Group consisting of different components (compressor, heat exchangers, evaporator). * A **Production line** can also be a Machine Group, which itself contains other machine groups such as cooling installations in the line. {% hint style="info" %} Notes: **Equipment modules** and **control modules** are not part of the base S95 standard. They are added as extensions of the model to unify the model with the S88 standard **ISA-88 (S88) standard.** {% endhint %}