What type of refrigerants are considered safe for toxicity and flammability but require oxygen deprivation sensors?

The category that includes refrigerants considered safe for toxicity and flammability but requires oxygen deprivation sensors is B1. Refrigerants in this classification exhibit low toxicity and are not flammable, which makes them generally safer to use in various applications. However, since they can displace oxygen in the air, it's crucial to have oxygen deprivation sensors in place to ensure that safe levels of oxygen are maintained, especially in confined spaces or areas where refrigerant leaks might occur.

The distinction of requiring such sensors is important because, while the refrigerant itself may not be hazardous under normal conditions, uncontrolled releases can create a risk of asphyxiation due to decreased oxygen levels. This characteristic makes the presence of oxygen sensors a necessary safety measure, emphasizing the importance of monitoring air quality in environments where these types of refrigerants are utilized. Understanding the classifications of refrigerants and their safety measures helps ensure proper handling and compliance with safety protocols in refrigeration systems.