What is required for LP-Gas storage tanks over 500 gallons?

For LP-Gas storage tanks over 500 gallons, it is mandatory for them to be installed by a licensed installer. This requirement is in place to ensure that the installation complies with safety standards, regulations, and best practices. Licensed installers are trained professionals who are knowledgeable about the complex codes and requirements that govern LP-Gas systems. They are equipped to handle the specifics of safe installation to prevent leaks or other hazardous conditions that could arise from improper setup.

The other options do not reflect general requirements for LP-Gas storage tanks of this size. For instance, while color coding may play a role in visibility for some tanks, there is no specific regulation mandating that tanks must be painted red. The use of alarms, while beneficial for safety, is not universally required for storage tanks, depending on local regulations and specific tank configurations. Moreover, connection to a city gas line is irrelevant for LP-Gas storage since LP-Gas systems are typically independent of municipal gas services. Thus, the first option stands out as the accurate requirement.