What parts of the tank should be soaped when conducting a pre-installation tank test?

When conducting a pre-installation tank test, it is critical to soap all surfaces, seams, and fittings of the tank. This practice is important for identifying potential leaks. The act of soaping allows for detection of bubbles that will form if there are any air leaks present; these bubbles signal that the integrity of the tank may be compromised.

Specifically, checking all surfaces ensures that any areas where stress may cause fractures or openings are monitored. This includes not just the seams, which are often points of weakness, but also the fittings where pipes are connected, as these locations can also be susceptible to leaks due to improper seals or fittings. Adequately covering the entire tank with soap helps ensure a thorough examination, resulting in a safer installation process. Therefore, choosing to inspect all parts of the tank is essential for maintaining safety standards and compliance for underground storage tanks.