Certified Healthcare Constructor (CHC) Practice Exam

In positive pressure systems, area alarm sensors must be located on which sides of the zone valve box assemblies?

1. Patient room, outlet/inlet, and downstream

2. Floor, ceiling, and adjacent wall

3. Only in patient rooms, near doors, and in halls

4. Main supply line, patient room, and ventilation area

The correct answer is: Patient room, outlet/inlet, and downstream

In positive pressure systems, placing area alarm sensors on the patient room, outlet/inlet, and downstream sides of the zone valve box assemblies is crucial for ensuring that the system is functioning correctly. This configuration allows for comprehensive monitoring of air pressure changes within the designated zones. The sensors positioned on the patient room side can detect any breaches or drops in pressure that could compromise patient safety or the effectiveness of infection control. By also monitoring the outlet/inlet and downstream areas, these sensors provide a complete view of the airflow and pressure dynamics within the system, which is essential for maintaining the intended positive pressure environment. This placement supports immediate detection of potential issues that could lead to contamination or inadequate pressure. The alarm system can alert healthcare personnel to problems as they arise, thereby facilitating prompt response actions to maintain safe conditions. Proper sensor placement is fundamental in maintaining the integrity and performance of positive pressure systems, directly impacting patient safety and care quality.