Atmos International is a pipeline technology company that has successfully implemented thousands of pipeline projects around the world in the last 22 years. This vast experience assures our deep understanding of fluid mechanics and the hydraulic behavior of liquid and gas pipelines. Our experienced pipeline engineers provide the following services:

  • Surge analysis studies
  • Capacity studies
  • Pipeline leak detection system evaluation in accordance with API recommended practices
  • Portable leak detection and location service
  • Leak detection and location services for pipeline hydrostatic testing
  • Airport hydrant integrity monitoring service
  • Theft detection service

With a dozen Atmos offices around the world, we can quickly respond to your request and dispatch a field engineering team on short notice.

Surge analysis

Pressure transients cause rapid acceleration or deceleration of a liquid flow that can result in both positive and negative pressure. The pressure surges travel at the speed of sound, and the hammer-like blows can damage the piping and equipment on a pipeline. Pressure transients are inevitable when operating a pipeline, these pressure transients must be studied and controlled within reasonable limits.

Many countries have strict regulatory requirements to ensure the safe operation of pipelines. For example, the UK Pipeline Safety Regulations state that:

“The pipeline operator shall ensure that no fluid is conveyed in a pipeline unless the Safe Operating Limits (SOL) of the pipeline have been established and that a pipeline is not operated beyond its SOL.”

In the US, the Department of Transportation (DOT) guidelines (DOT Title 49 CFR Ch.1 Part 195.406) state:

"No operator may permit the pressure in a pipeline during surges or other variations from normal operations to exceed 110% of the operating pressure limit established under paragraph (a) of this section. Each operator must provide adequate controls and protective equipment to control the pressure within this limit."

Success assured by the best simulation software

Atmos uses its proprietary, ultramodern, hydraulic simulation software, Atmos SIM to accurately model the effects of the pressure surge in pipelines. Atmos SIM is used by major pipeline operators around the world because of the features such as:

  • Variable knot spacing allows for accurate analysis of the pressure surge, minimizing interpolation and errors
  • Variable time steps allow for accurate analysis of the pressure wave propagation
  • Reverse velocity modelling allows dynamic check valve modelling
  • Pump modelling allows accurate spin-up and spin-down times
  • Control logic for accurately simulating pipeline control systems during surge events
  • Valve characteristic inputs allow for accurate valve closure modelling

Automated surge analysis module

This module automates the procedure from the scheduling of simulation scenarios to the creation of the surge analysis report.

The surge analysis module was exclusively designed in cooperation with a major US pipeline operating company. Analyzing very large pipelines and networks is much faster as the calculations are automated in the software. This module simplifies and automates the test report documentation in a format that the regulatory authorities can easily review, outlining each surge scenario with the resulting pressure and produces clear, precise tables and trends of the data.

Capacity studies

Boundary conditions such as the diameter, length, available inlet compression, minimum delivery pressure, and other physical parameters determine the physical capacity of a pipeline. This capacity must be calculated as close to the true capacity as possible to maximize the utilization of the pipeline and optimize return on invested capital.

Our scientists and engineers have extensive experience in pipeline modeling. They can calculate the exact hydraulic capacity of your pipelines to confirm that product shipments are optimized and solve any operational and throughput problems. Our team perform the studies using our highly accurate simulation software and provide the detailed results in a report format or as data files for you to replay in our simulation software.

Pipeline leak detection system evaluation

Pipeline spills occur as pipeline infrastructure ages and more hazardous products are transported. Regrettably, too many leak detection systems fail to detect these leaks, and other leak detection systems are ignored by the operators because they are unreliable. Thus, leaks that should have been small spills become disasters that cost pipeline owners millions of dollars.

Many variables affect the performance of a leak detection system on a pipeline; including topology, telecommunication, instrumentation, and modes of operation. With over 1,000 years combined experience in pipeline leak detection and simulation, our engineers can evaluate the performance of your current leak detection systems based on the best practices, help you select the best solution for any pipeline, and guide you in the development and documentation of your pipeline leak detection program.


Airport hydrant integrity monitoring service

The consequence of hydrant leaks can be very high. A leak event at a commercial or military airport can result in:

  • Fuel contamination
  • Significant financial costs
  • Delayed or canceled flights
  • Safety risk

Locating a leak on several kilometers of hydrant network can be time-consuming and expensive. Since 2000, Atmos has supplied tightness monitoring systems for jet fuel pipelines and airport hydrant systems. Atmos Portable Tightness Monitor is a very effective tool for testing hydrant systems without existing instrumentation and communication infrastructure. It has the following key features:

  • Compliant with the 0.04l/h/m3 minimum detectable leak size standards set in EI1560, API1540, JIG2, and JIG4
  • Field proven pressure step method
  • Test cycle takes 30 minutes
  • Fully portable in two watertight, crushproof PELI™ cases
  • Powered by the DC supply from a support vehicle
  • Depressurization manifold rated for use in ‘Zone 1’ explosive atmospheres
  • Additional ability to test integrity of hydrant pit valve
  • USEPA certified

The Atmos Portable Tightness Monitor can be quickly deployed in two Peli™ cases from a local Atmos office to any airport in the world together with a specialist test engineer.

The system connects to the hydrant via a coupler on a refueling point or via a low point drain/high point vent. It is designed for fast disconnection and reconnection to other hydrant segments, so that all the hydrants can be quickly tested with minimum downtime.

Theft detection service

To help our clients detect and locate thefts within the shortest time possible, Atmos provides a special analysis and reporting service. The service runs in conjunction with Atmos Wave hardware and software, and different levels of response time are available.

For more details about theft detection service, please click here.



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Gas Gas
Aviation Aviation
Chemical Chemical
Multi-phase Multi-phase
Water Water
Mining and slurry Mining and slurry