Building Management System
The building management system (BMS) is an overarching control system that is responsible for the automatic regulation and control of non-GMP facility subsystems, maintaining predefined parameters (or set points) and the control of their functionality. The major aim of the BMS is to guarantee the safety of facility operation, while also monitoring and optimizing the use and efficiency of its supervised subsystems to allow more efficient operation. Examples of the major subsystems controlled by the BMS are:
- HVAC System. The duct temperature, pressure, and humidity, as well as exhaust temperature are connected to the BMS, and if their value exceeds defined limits, an alarm is generated.
- Central Fume Collection, Laminar Flow Units, Dust Collection System, Central Vacuum System, Heat blowers. The BMS monitors the performance of these systems, allowing for early identification of units requiring maintenance. Sudden breakdown would signal via alarms and then appropriate action can be taken to protect the product.
- Technical Steam System. Should, for instance, the pressure or temperature in the piping system fall below the defined regulatory values for clean steam, the BMS shall trigger an alarm, indicating a threat to product quality.
- Hot Water System and Central Heating. Temperature and pump control monitoring via the BMS allows for a proper functioning of hot water distribution through the facility.
- Chilled Water System. Control of the facility chillers could be supervised by BMS to monitor proper behavior of the system in terms of water/coolant temperature control or pump control to assure proper distribution within the distribution loop.
- Sprinkler System (for fire safety).
- Electrical Monitoring System. The BMS may monitor the consumed electrical power and the state of main electrical switches.
An example layout of a building automation system