Pipeline Life-Cycle-Extention

System Reliability Improved Through Fast-track Force Main Replacement

System Reliability Improved Through Fast-track Force Main Replacement
System Reliability Improved Through Fast-track Force Main Replacement
The Sewer Authority Mid-Coastside (SAM) transports and treats wastewater from several coastal communities in San Mateo County, California. In the spring of 2017, one of SAM’s force mains, the Granada Force Main, experienced a series of ruptures that disrupted operations and negat ively impacted local beaches. Due to its p revious history of breaks...

Adapting oil & gas infrastructures to climate change

Adapting oil & gas infrastructures to climate change
Adapting oil & gas infrastructures to climate change
It is well known that natural disasters which are related to climate change (e.g. rising sea levels, heat stress, extreme precipitation, inland and coastal flooding, landslides, water scarcity etc.) are rapidly increasing through last decades. Climate impacts not only show regional and seasonal patterns, but also differ between territorial settings...

Safely repairing subsea flanges on flexible flowlines with a flexible bridging jumper structure

Safely repairing subsea flanges on flexible flowlines with a flexible bridging jumper structure
Safely repairing subsea flanges on flexible flowlines with a flexible bridging jumper structure
As offshore pipelines age, the oil and gas industry must properly maintain equipment to prevent leaks. In subsea flowlines, leaks sometimes originate from aging flanges. These flanges must be replaced. Historically, replacing the flange has required a lot of time. Different costly approaches are available, from subsea reparations to flowline...

Surge protection for insulating joints – suitable spark gaps and evaluation of the installation

Surge protection for insulating joints – suitable spark gaps and evaluation of the installation
Surge protection for insulating joints – suitable spark gaps and evaluation of the installation
Insulating joints are used for the electrical separation of pipeline systems or for dividing pipelines that are affected by high voltages into sections. The electrical isolation of cathodically protected systems is maintained until the dielectric strength/ flashover strength of the insulating joint is reached. Overvoltages which occur as a result...

GRP Piping Failures

GRP Piping Failures
GRP Piping Failures
Glass-fibre Reinforced Plastic pipe (GRP) systems, also known as FRP pipe systems, have been succ essful in the world’s markets for more than 50 years. During this time, they have developed into a modern pipe material that is predominantly convincing thanks to its lightweight, corrosion resistance, a smooth inner surface, and easy installation...

Over-Voltage Protection on Pipelines

Over-Voltage Protection on Pipelines
Over-Voltage Protection on Pipelines
Pipelines are commonly exposed to over-voltage conditions created by AC faults, lightning and induced AC voltage from high voltage power transmission lines. To protect personnel and the pipeline from the hazardous effects of these conditions, it is critical to properly ground the pipeline and provide continuity across isolation joints for AC and...

Pipeline vibrations – Measurements under difficult conditions

Kötter Consulting Engineers
Kötter Consulting Engineers
In many technical applications pipelines are used for the transport of potentially flammable or hazardous gases and liquids. Vibration problems at pipelines often depend on the volume flow. Vortex shedding is a typical result of flow induced pulsations and may cause severe piping vibrations and failures. Another excitation source for critical...