Tightness testing in Panama: method, scope and procedure
What a test evaluates, how to interpret published MESA 2-D performance and why the technical report does not replace DINASEPI’s decision.
Selection and technical context
Image details
It does not depict a leak, test method, or test result. The technical report documents the method, scope, and acceptance criterion.
In this article
A tightness test evaluates an identified system under a method’s conditions. For useful decisions, the report should separate three things: technical scope, test result and the applicable regulatory process.
What the scope should identify
The document should state the evaluated tank, line or component, product, capacity, relevant conditions, equipment and method. A visual inspection may detect damage, water or corrosion, but it is not a tightness test.
How MESA 2-D works
According to the MESA 2-D entry in the California State Water Resources Control Board listing, MESA 2-D is nonvolumetric. It applies vacuum to the tank ullage, listens for acoustic signals that may indicate air ingress and uses a separate sensor to detect water ingress.
What the published rate means
The listing, issued on March 4, 2019 and updated on September 23, 2024, records evaluated performance at a leak rate of 0.1 gallon per hour, with 100% probability of detection and 1.6% probability of false alarm, under the stated conditions. It is not an individual volumetric measurement or a universal Panama regulatory obligation.
Who decides certification
Panamá Digital describes a Fire Department process, through DINASEPI, for inspecting service stations and certifying their operation. A BCBRP document revised in 2014 calls the procedure an annual inspection and states a one-year validity; confirm with DINASEPI which current scope applies to each case.
When to evaluate again
There is no universal answer for every system. The need may arise from the applicable procedure, an intervention, a finding, history or the response plan. Before scheduling, confirm the current requirement and which components must be included.
If the result does not meet the criterion or is inconclusive, review the report, follow the facility response procedure and define the next step. The test does not always locate the ingress or release point by itself. Before scheduling another visit, use our preparation and scope guide to organize the available information.
