Secondary containment tank or piping definition
Secondary containment tank or piping means a tank or piping which is designed with an inner primary barrier and an outer barrier which extends around the inner barrier, and which is designed to contain any leak through the primary barrier from any part of the tank or piping that routinely contains product, and to allow for monitoring of the interstitial space between the barriers for the detection of any leak or release of regulated substance from the underground tank or pipingor secondarily contained" means a release prevention and release detection system for a tank or piping. This system has an inner and outer barrier with an interstitial space that is monitored for leaks. This term includes containment sumps when used for interstitial monitoring of piping.