When it comes to caverns, thightness rules
In the salt cavern industry, KBB UT has been benefiting from its comprehensive experience of performing and evaluating tightness tests on cavern boreholes, both before and after the leaching process.
In recent years, we were able to increase testing accuracy while minimising measuring time by enhancing standard testing procedures.
Tightness certificates serve the security of people, equipment and the environment (third-party protection) while preventing product loss (availability). Strict testing also helps improve acceptance of caverns by the population.
A successful tightness test is also a requirement for cavern operation approval by the relevant authorities.
Depending on the purpose of the cavern, a hydraulic or gas tightness test may be required for the access boreholes. If the cavern is to be used for oil storage, hydraulic tightness is tested; if it is to be used for gas storage, gas tightness is tested. The test medium for gas tightness testing is nitrogen because it is easy to manipulate and poses no hazards for humans or the environment.