What requirement does NFPA have for pressure supervisory signals regarding maintenance?

The correct requirement according to NFPA for pressure supervisory signals is that they need to be inspected and tested regularly. Regular inspection and testing are critical to ensure that the pressure supervisory signals function correctly and can effectively alert personnel in the event of a fire or system malfunction. This practice is essential for maintaining the reliability and safety of fire protection systems, which rely on accurate signals regarding the status of system pressure to operate effectively.

Regular inspections and testing help identify any potential issues before they lead to failures during an actual emergency. This proactive maintenance approach aligns with NFPA standards and encourages the implementation of best practices in fire safety management, thereby mitigating risks associated with fire incidents. Monitoring systems without regular testing may not provide adequate assurance of their operational capability, which underscores the importance of adherence to these inspection and testing protocols in maintaining fire safety systems.