True or False: Temperature changes can lead to over-pressurization in tanks.

Temperature changes can indeed lead to over-pressurization in tanks. As the temperature of the liquid inside a tank increases, the vapor pressure of the liquid also increases. This is due to the fact that heated liquids tend to expand and produce more vapor, which occupies space above the liquid in a closed system. If the tank does not have appropriate pressure relief mechanisms, this increase in vapor pressure can lead to over-pressurization, potentially causing structural failure of the tank or releasing hazardous substances.

Furthermore, understanding the relationship between temperature and pressure is crucial for maintaining the safety and integrity of underground storage tanks (USTs). The design and operation of these systems must take into account thermal expansion and ensure that regulatory requirements regarding pressure relief and safety are met. Therefore, the assertion that temperature changes can cause over-pressurization in tanks is valid and reflects a fundamental principle of tank design and management.