When a fuel system fails a state-required secondary containment test, that’s when the real work begins.
The United Pacific gas station at 2650 Cameron Park Drive in Cameron Park, California, recently failed the SB 989 test, a California regulation requiring secondary containment testing at all new sites upon installation, within six months after installation, and every 36 months thereafter. Sites in existence prior to Dec. 31, 2002, must have the test every 36 months, as well.
Upon finding that the premium unleaded product line failed pressure testing, the CGRS California Compliance team performed a helium leak locate to determine the source of the breach. The test indicated the Bravo termination flex boots (black rubber hoses that provide secondary containment around the primary fiberglass piping) were breached at a particular dispenser. The fact that the system is 20-plus years old and band clamps – stainless steel hose clamps that secure the termination boots to the pipe connections – were used when it was installed were likely contributing factors to the leak. Over time the rubber termination boots loosen up and the band clamps fail.