Which three elements does Statistical Inventory Reconciliation (SIR) analyze for leak detection?

Statistical Inventory Reconciliation (SIR) is a method used for leak detection in underground storage tank (UST) systems. The analysis focuses on three key elements: inventory, delivery, and dispensing.

Inventory refers to the amount of product currently in the tank. Accurate inventory measurements are essential for identifying discrepancies that may indicate a leak.

Delivery involves the amount of product added to the tank during restocking. Tracking deliveries helps to reconcile the expected inventory with the actual inventory levels, revealing if there is a deficit that could point to leaks.

Dispensing covers the amount of product sold or removed from the tank. By monitoring dispensing records, operators can assess whether the output matches what they expect based on inventory and delivery data.

Collectively, these three elements create a comprehensive view of the tank's operations, allowing for effective identification of potential leaks through statistical analysis of any discrepancies in the data. This helps ensure environmental safety and compliance with regulatory requirements.