For how long should records of tank and piping tightness testing be maintained?

Records of tank and piping tightness testing are essential for demonstrating compliance with regulatory requirements and for ensuring the integrity of underground storage tanks (USTs). The appropriate duration for maintaining these records is three years. This requirement is set forth to ensure that facilities can provide evidence of proper testing and maintenance over a reasonable period.

Maintaining records for three years allows operators to track testing history effectively, providing a clear record in case of inspections or audits. This timeframe also aligns with various regulations which emphasize the importance of accountability and tracking for safety purposes. It is long enough to cover many significant operational scenarios while ensuring that the records do not become outdated.