Which dry cleaning system category is related to solvents with a flash point at or above 140ºF?

Type III dry cleaning systems are specifically designed for the use of solvents that have a flash point at or above 140ºF. This classification is crucial for safety and regulatory compliance, as higher flash point solvents reduce the risk of fire hazards associated with dry cleaning processes.

The categorization helps to delineate systems based on the fire safety measures and requirements needed for handling different types of solvents. Solvents with higher flash points are generally considered to be safer to use because they are less likely to ignite under normal operating conditions. This allows for certain operational and storage approaches that may not be permissible for lower flash point solvents, thereby influencing design, ventilation, and equipment safety standards. Understanding the implications of these classifications is vital for ensuring that dry cleaning facilities operate safely and in accordance with North Carolina's mechanical code requirements.