California UST System Operator Practice Test

Fiberglass and flexible plastic piping are inherently resistant to corrosion, which is a significant concern for metallic piping systems in the context of underground storage tank operations. Because these materials do not corrode in the same manner as metals, they do not require cathodic protection, which is primarily designed to prevent corrosion in metal piping systems. This resistance to corrosion is a fundamental aspect of fiberglass and flexible plastic materials that makes them suitable for use in environments where corrosion could pose a significant risk. Therefore, the correct answer indicates that these types of piping do not necessitate cathodic protection.

Although some choices suggest conditional scenarios, fiberglass and flexible plastic piping universally does not require cathodic protection, regardless of whether they are buried or not. This distinction is essential for those working with UST systems to understand the specific material requirements and best practices related to tank installations and maintenance.