A pump system includes an interface detection meter arranged at a pipeline assembly, a drive assembly for controlling speed of a pump arranged at the pipeline assembly, a discharge pressure control assembly and/or flow control assembly for controlling discharge pressure of the pump system, and a control assembly operably coupled to the drive assembly and/or the discharge pressure control assembly and/or the flow control assembly. A logic control of the control assembly receives fluid data of fluid in the pipeline assembly provided by the interface detection meter, and forwards the fluid data for calculating speed set points for the drive assembly and/or discharge pressure control parameter and/or set points for the discharge pressure control assembly, and/or flow rate control set points for the flow control assembly. A method for controlling variable speed driven pumps or pump systems during batch change and an embodiment of a plug-and-play device are disclosed.

A pump system includes an interface detection meter arranged at a pipeline assembly, a drive assembly for controlling speed of a pump arranged at the pipeline assembly, a discharge pressure control assembly and/or flow control assembly for controlling discharge pressure of the pump system, and a control assembly operably coupled to the drive assembly and/or the discharge pressure control assembly and/or the flow control assembly. A logic control of the control assembly receives fluid data of fluid in the pipeline assembly provided by the interface detection meter, and forwards the fluid data for calculating speed set points for the drive assembly and/or discharge pressure control parameter and/or set points for the discharge pressure control assembly, and/or flow rate control set points for the flow control assembly. A method for controlling variable speed driven pumps or pump systems during batch change and an embodiment of a plug-and-play device are disclosed.

Methods and systems for, among other embodiments, transporting renewable diesel (RD) through a pipeline, or a portion thereof, are provided. In certain embodiments, the method may include transporting the renewable diesel from a first pipeline terminal to a second pipeline terminal, the renewable diesel wrapped head and tail with a compatible diesel fuel. The method may also include restricting the transport of the diesel fuel in the pipeline to diesel fuel compositions having a first composition or first specification, the first composition or first specification characterized by a selected amount of the renewable diesel, or a component thereof, the selected amount being less than the selected amount allowed in a second target specification for the diesel fuel. The method may also include combining, at the second pipeline terminal, at least a portion of the mixed interface fraction stream with at least a portion of the diesel fuel fraction stream so as to produce a diesel fuel stream meeting the second target specification.

Methods and systems for, among other embodiments, transporting renewable diesel (RD) through a pipeline, or a portion thereof, are provided. In certain embodiments, the method may include transporting the renewable diesel from a first pipeline terminal to a second pipeline terminal, the renewable diesel wrapped head and tail with a compatible diesel fuel. The method may also include restricting the transport of the diesel fuel in the pipeline to diesel fuel compositions having a first composition or first specification, the first composition or first specification characterized by a selected amount of the renewable diesel, or a component thereof, the selected amount being less than the selected amount allowed in a second target specification for the diesel fuel. The method may also include combining, at the second pipeline terminal, at least a portion of the mixed interface fraction stream with at least a portion of the diesel fuel fraction stream so as to produce a diesel fuel stream meeting the second target specification.

A method of preparing a system for a maintenance operation having first subsystem, a second subsystem, and a third subsystem separated by sealing blocks. To reduce the hazard risk, the step of removing gas from the second subsystem via a bleed conduit includes applying the sub-atmospheric pressure using a venturi-pump into which an anoxic gas to drive said venturi-pump is introduced to mix with and remove gas from the second subsystem, said venturi-pump having a maximum venturi ratio Mvr.

Methods and systems for, among other embodiments, transporting renewable diesel (RD) through a pipeline, or a portion thereof, are provided. In certain embodiments, the method may include transporting the renewable diesel from a first pipeline terminal to a second pipeline terminal, the renewable diesel wrapped head and tail with a compatible diesel fuel. The method may also include restricting the transport of the diesel fuel in the pipeline to diesel fuel compositions having a first composition or first specification, the first composition or first specification characterized by a selected amount of the renewable diesel, or a component thereof, the selected amount being less than the selected amount allowed in a second target specification for the diesel fuel. The method may also include combining, at the second pipeline terminal, at least a portion of the mixed interface fraction stream with at least a portion of the diesel fuel fraction stream so as to produce a diesel fuel stream meeting the second target specification.

Methods and systems for, among other embodiments, transporting renewable diesel (RD) through a pipeline, or a portion thereof, are provided. In certain embodiments, the method may include transporting the renewable diesel from a first pipeline terminal to a second pipeline terminal, the renewable diesel wrapped head and tail with a compatible diesel fuel. The method may also include restricting the transport of the diesel fuel in the pipeline to diesel fuel compositions having a first composition or first specification, the first composition or first specification characterized by a selected amount of the renewable diesel, or a component thereof, the selected amount being less than the selected amount allowed in a second target specification for the diesel fuel. The method may also include combining, at the second pipeline terminal, at least a portion of the mixed interface fraction stream with at least a portion of the diesel fuel fraction stream so as to produce a diesel fuel stream meeting the second target specification.