A method for cleaning a coke deposit from an internal surface of a process equipment, comprising removing at least a portion of the coke deposit from the internal surface using a flexible pig comprising a plurality of bristles, without damaging a metal protective layer of the internal surface of the process equipment. A flexible pig for cleaning a coke deposit from an internal surface of a process equipment without damaging a metal protective layer of the internal surface, comprising a flexible body formed of a polymeric material, and a plurality of bristles partially encapsulated by the polymeric material of the flexible body.

The present invention relates to a pig for use in a system for lining ducts such as water or sewage pipes or electrical ducts or gas pipes. The pig is insertable at least partly within a fabric liner sleeve located in a duct such as a water or sewage pipe and is capable of heating the liner sleeve in situ in the duct to melt or soften thermoplastic material of the liner sleeve to subsequently form, on cooling of the melted thermoplastic material, a rigid liner in the duct. A pig for fitting a liner to the inside of a pipe, comprising a pig body defining a longitudinal axis in a longitudinal direction from a front portion to a rear portion; a gas supply port in the front portion; a gas outlet diffuser forming part of the rear portion; a heating chamber in the pig body forming a flow path from the fluid inlet to the outlet diffuser; and a heater within the heating chamber, wherein the outlet diffuser comprises a plurality of channels, each channel comprising an inlet facing the front portion in the longitudinal direction and an outlet extending radially outwardly from the longitudinal axis.

Various embodiments of an amphibious submersible vehicle for use in non-destructive testing of pipe interiors and walls are disclosed herein. In one aspect, the vehicle is operable for amphibious submersible operation such that pipes of various diameters can be inspected under full, partially full, and dry conditions. In another aspect, the vehicle is equipped with a plurality of propellers for travel when fully or partially submerged in water and a plurality of wheels for traveling when in contact with a pipe wall or for traveling over debris. In some embodiments, the vehicle is equipped with a plurality of sensors configured for imaging and navigation which enable the vehicle for pipe inspection and identification of problem areas.

Various embodiments of an amphibious submersible vehicle for use in non-destructive testing of pipe interiors and walls are disclosed herein. In one aspect, the vehicle is operable for amphibious submersible operation such that pipes of various diameters can be inspected under full, partially full, and dry conditions. In another aspect, the vehicle is equipped with a plurality of propellers for travel when fully or partially submerged in water and a plurality of wheels for traveling when in contact with a pipe wall or for traveling over debris. In some embodiments, the vehicle is equipped with a plurality of sensors configured for imaging and navigation which enable the vehicle for pipe inspection and identification of problem areas.

Systems and methods for efficient on-line pigging of a coker furnace without interruption of the delayed coking process, which will save time and money during the delayed coking process. This system can be retrofitted to existing coker furnaces.

Systems and methods for efficient on-line pigging of a coker furnace without interruption of the delayed coking process, which will save time and money during the delayed coking process. This system can be retrofitted to existing coker furnaces.

Disclosed is a pipeline suspension inspecting gauge which comprises a mobile carrier and a power supply module, a primary controller, a positioning module, a vibration sensor, a variable-frequency excitation device, a secondary controller, and a data processing assembly which are arranged on the mobile carrier. The power supply module, the positioning module, and the secondary controller are all electrically connected with the primary controller; the variable-frequency vibration excitation device, the vibration sensor, and the data processing assembly are all electrically connected with the secondary controller. The pipeline suspension inspecting gauge is simple in structure and high in measurement sensitivity.

Disclosed is a pipeline suspension inspecting gauge which comprises a mobile carrier and a power supply module, a primary controller, a positioning module, a vibration sensor, a variable-frequency excitation device, a secondary controller, and a data processing assembly which are arranged on the mobile carrier. The power supply module, the positioning module, and the secondary controller are all electrically connected with the primary controller; the variable-frequency vibration excitation device, the vibration sensor, and the data processing assembly are all electrically connected with the secondary controller. The pipeline suspension inspecting gauge is simple in structure and high in measurement sensitivity.

A remote inspection system for inspecting piping that includes: a vehicle configured to move through pipe; a lighting system mounted on the vehicle; a sensor mounted on the vehicle; a communication system on the vehicle; and a processor configured to assess an effective drainage coefficient of the inspected piping based on data gathered from the sensor.

A remote inspection system for inspecting piping that includes: a vehicle configured to move through pipe; a lighting system mounted on the vehicle; a sensor mounted on the vehicle; a communication system on the vehicle; and a processor configured to assess an effective drainage coefficient of the inspected piping based on data gathered from the sensor.