Transfer hoses construction materials

On August 14, 2002, a 1-in chlorine transfer hose (CTH) used in a rail-car offloading operation at DPC Enterprises in Festus, Missouri, catastrophically ruptured and initiated a sequence of events that led to the release of 48,000 lb of chlorine into neighboring areas. The material of construction of the ruptured hose was incorrect. The distributor fabricated bulk CTH with Schedule 80 Monel 400 end fittings and a high-density polyethylene spiral guard. Three hoses were shipped directly to the Festus facility from the distributor two were put into service on June 15, 2002. The hose involved in the incident failed after 59 days in service. 

When transferring fuel and fuel additives from storage to the pump and to its final point of use, different types of lines and hoses are utilized. Mild steel, stainless steel, and cross-linked polyethylene hose are the typical materials of construction used. These materials withstand the temperature and environmental extremes of outdoor installation and are compatible with fuels and most additives. 

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