A building automation system or BAS is a network of controlling and monitoring devices mainly responsible for the heating, ventilation, and air conditioning (HVAC) control system in large facilities and commercial buildings. Building automation systems are most commonly implemented in large facilities such as healthcare facilities, schools, universities, hotels, residential buildings, and data centers. A BAS network allows building operators to supervise and control the HVAC systems from a centralized location known as the Building Management System or BMS. VAV system, the air handling unit (AHU) and the VAV boxes are physically separated from each other, and each one has its own controller, also distanced from one another. However, for a VAV system to operate effectively, the VAV Boxes and the AHU have to talk to each other; in other words, they need to share information to properly adjust their setpoints based on zone heating or cooling demand.
Layer of Protection Analysis
Simplified Process Risk Assessment
Introduction
Layer of Protection Analysis (LOPA) is a structured risk assessment method to evaluate process safety and determine the adequacy of safeguards...
Assessment Steps
- Hazard Identification: Recognize potential hazards and consequences.
- Safeguard Analysis: Identify protection layers.
- Risk Calculation: Quantify the risk and compare it to acceptable levels.
- Decision Making: Implement additional safeguards if required.
Importance
LOPA ensures a systematic approach to risk management by assessing the reliability of each protection layer...
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