Inline Services Is Your Trusted Resource for Hot Tapping & Line Plugging

Hot Tapping and Line Plugging is the preferred method for performing maintenance, repairs, or modification work to a live, pressurized pipeline. The Hot Tapping and Plugging technology makes it possible for pipeline owners and operators to isolate and bypass sections of pipeline. This allows them to complete projects without needing to shut down the system or lose product.

What is Hot Tapping?

Hot Tapping is the procedure for cutting or drilling an opening into a pipe which is carrying product under pressure without shutdown or spillage.  It is the preferred method for performing maintenance, repairs or modification work requiring safe entry into a live, pressurized pipeline.

Why Make a Hot Tap?

Hot Tapping is used for many purposes:

  • To safely tie-in to a pressurized system while under full operating conditions
  • To make new Tie-Ins or Branch Connections
  • To create an access point for Line Stopping Machinery
  • Extract coupon for material analysis

All of this and more can be done without interruption of the pipelines flow or transportation and delivery service.

Hot Tapping Techniques:

Hot Tapping is used to tie into your system in many different ways.  Our team of pipeline experts will determine which technique is best for your application and will provide the optimum results.

Hot Tapping can be performed on pipe materials including:

  • Carbon Steel – X80 Grade
  • Stainless Steel
  • Cast Iron
  • Pre-stressed Concrete
  • Ductile
  • Alloys
  • PVC & HDPE

Hot Tapping is an effective technique for other pipeline applications including:

  • Product Sampling Point
  • Flow Meter Installation
  • Thermo-well Sensor Installation
  • Draining of pipelines
  • Pressure Control Switch Installation
  • Pipeline Inspection
  • Determine product in a pipeline
  • Air / Product Relief Point

Pipeline Plugging is the method of safely isolating and bypassing a section of pipeline enabling modification to a pressurized system without the need to  shutdown the line under operating conditions.

Why Plug a Pipeline?

Isolation may be required for several reasons:

  • Replace or install a new line valve
  • Repair a damaged section of pipe due to external damage or corrosion
  • Repair a ruptured line
  • Isolate a compressor station or plant unit
  • Line requiring modification due to:
  • Roadway
  • Line re-route
  • Plant alteration
  • Tie-in new section of pipeline

Pipeline Plugging Techniques:

Isolation of a pipe is obtained by inserting a plugging head into the pipe through a hot tapped fitting and temporary valve assembly while under pressure.

After the plugging head has been set, the pressure is relieved in the isolated section through an equalization fitting on the isolated section of pipe.


After the modification to the pipeline or plant has been made, the equipment needs to be removed.

The line is equalized, and the plugging head is retracted.

In order to remove the temporary valve a completion plug is installed and secured into the fitting. The pressure is relieved above the plug and the equipment is removed.

A blind flange is then installed over the plug and the job is completed. If necessary the fitting can be re-entered in the future by removing the blind flange, re-installing the temporary valve and removing the completion plug.