Hazards Because most pipelines are located underground, there are hazards related to materials handling and excavation during construction. For pipelines carrying fuels and hazardous materials, pumping systems move contents from sources to processing and use locations. Fire and explosion are major concerns for fuels and flammables. A leak in a pipe, fitting, valve, pump, or other component of the pipeline could produce disastrous results. During maintenance, segments being repaired must be depressurized, blocked off, and purged so that any residual fuel does not ignite. Valves must be closed and locked before flanges are worked on. If the material in the pipeline is corrosive or toxic, there are dangers of contact and inhalation. Gaskets and packings in valves are common failure points.
Hazards Because most pipelines are located underground, there are hazards related to materials handling and excavation during construction. For pipelines carrying fuels and hazardous materials, pumping systems move contents from sources to processing and use locations. Fire and explosion are major concerns for fuels and flammables. A leak in a pipe, fitting, valve, pump, or other component of the pipeline could produce disastrous results. During maintenance, segments being repaired must be depressurized, blocked off, and purged so that any residual fuel does not ignite. Valves must be closed and locked before flanges are worked on. If the material in the pipeline is corrosive or toxic, there are dangers of contact and inhalation. Gaskets and packings in valves are common failure points.
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