Safety and environmental issues, such as ground water contamination, have long been serious concerns for North American industry. Add to this the enormous costs of litigation, clean up, and increasingly stringent corporate guidelines and legal regulations, and the importance of fail-safe double containment systems becomes immediately clear.
However, exactly what constitutes ‘double containment’? Although, on paper, simple solutions such as the lining of ditches or similar methods may appear to meet double containment requirements, in reality, they fall short. With double containment, engineers are not designing a single system or even two separate single-wall systems, but rather a combination of the two: interrelated systems, where changing conditions continually affect both primary and secondary pipes.View Document