What is the primary purpose of marking a flexible hose connector on a cargo tank?

The primary purpose of marking a flexible hose connector on a cargo tank is to show the date of installation. This marking is critical for safety and regulatory compliance, as it allows operators to keep track of the hose's age and its potential need for replacement. Hoses are subject to wear and tear, and their integrity is crucial to prevent leaks and ensure safe handling of liquefied petroleum gas (LPG). Knowing the installation date helps in developing a maintenance schedule that is in line with industry standards and regulations specified by NFPA 58.

By routinely monitoring the age of the hose, operators can ensure that hoses are replaced before they reach the end of their service life, thus enhancing safety and reducing the risk of potential hazards associated with the use of deteriorating flexible hoses.