Pipeline Safety: Advisory Bulletin on Protecting Pipeline Integrity During Extreme Winter Weather, Rapid Thaw, and Geohazard Events

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PHMSA is issuing this advisory bulletin to all owners and operators of gas and hazardous liquid pipeline facilities to highlight safety risks associated with extreme winter weather. This includes impacts from heavy snowfall, ice expansion within pipeline facilities, flooding related to winter thaw, and frost heave resulting from sustained, unusually cold temperatures. This bulletin emphasizes the need for winterizing facilities in anticipation of cold weather events and heightened monitoring of ground movement and external loads to ensure the continued safe operation of the Nation's energy infrastructure.