What is the classification for systems or equipment whose failures cause discomfort but not injury?

The correct classification for systems or equipment whose failures cause discomfort but not injury falls under Category 3. In the context of NFPA 99, systems are categorized based on the impact of their failure on patient safety and comfort.

Category 3 specifically addresses those systems that, while important, do not present a risk of injury or death if they malfunction. Instead, their failure may cause discomfort to patients or users. This classification is meant to ensure that even non-critical systems are acknowledged in terms of maintenance and operations, providing a structured approach to managing various risks in a healthcare setting.

In contrast, the other categories have different implications: Category 1 involves systems where failure could lead to serious harm, Category 2 includes systems that are important for patient treatment but may not be directly life-threatening, and Category 4 addresses systems that are considered non-essential in the healthcare environment. Understanding these distinctions is crucial for safety protocols and ensuring appropriate responses to equipment failures.