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Online Welding Service

We offer online welding as part of our hot tapping and line stopping services. Wellube is the trusted service provider for ensuring your pipeline safety and world class flow management intervention and integrity services.

Efficient & Safe Online Welding Services from Wellube

What is Hot Tap Online Welding?

Creating a new connection to an existing pipeline or vessel that is under pressure or in use requires the welding method known as hot tap online welding, sometimes referred to as hot tapping or pressure tapping. The fluid or gas movement inside the pipeline can be repaired, modified, or installed entirely new using this method.

A hole is made in the existing pipeline or vessel using a specialised drilling device or cutting tool during the Hot Tap Online Welding procedure. The flow of the liquid or gas inside the pipeline is then managed by installing a valve at the site of the hole.
Several industries use hot tap online welding, including oil and gas, chemical, water treatment, and power production. Without shutting down the entire system, it offers a safe, affordable, and effective way to make repairs or upgrades to an existing pipeline or vessel.

Online Welding
Online Welding
Online Welding
Online Welding
Services > Online Welding

Our online welding services are effective and uphold the highest performance standards.

Online welding, otherwise called as live-line welding, is an integral part of any hot tapping and line stopping operations. A strong weld ensures safety and long-term profitability in the pipeline business.

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Hot tapping services

Specifications

Our online welding services include:

  • Project management and engineering
  • Procurement and fabrication of structural and piping
  • Provision of specialist welding services
  • Welding on live operational hydrocarbon lines and multi-flammable products feeding the state’s gas supply.

Applications

Wellube’s online welding services support our integrated hot tapping and line stopping services.

 

Hot Tap Online Welding Process Includes

Hot tap online welding, sometimes known as hot tapping, is a method of connecting to an existing pipeline while it is still in use and under pressure. Welding a new pipeline length onto an old pipeline through a hole cut in the pipe is the method.
The following steps are commonly involved in hot tap online welding:

1. Initial Assessment:

The first step is to evaluate the current pipeline and decide whether hot tapping is viable. This includes inspecting the pipeline’s size and thickness, the fluid inside, the fluid’s temperature and pressure, and the sort of welding procedure to be utilised.

2. Design and Planning:

Based on the assessment, a design and plan for the hot tapping process is produced. This includes deciding on the position and size of the hole to be cut, the type of valve to be used, the welding method to be utilised, and the necessary equipment.

3. Hole Cutting:

A hole is carved into the existing pipeline using a drill or other cutting tool. The hole size is determined by the size of the new pipeline segment to be welded onto the existing pipeline.

4. Valve Installation:

To control the flow of fluid during the welding process, a valve is inserted at the position of the hole.

5. Welding:

Using a welding technique like shielded metal arc welding, gas tungsten arc welding, or gas metal arc welding, the new section of the pipeline is joined to the existing pipeline through the hole. A certified welder normally performs the welding while adhering to stringent safety guidelines to guarantee its efficiency and safety.

6. Post-Welding Inspection:

After the welding is finished, the new length of the pipeline is inspected to make sure the welds are solid and free of flaws. This includes employing non-destructive testing methods to find any fractures or other weld flaws, such as X-ray or ultrasonic testing.

7. Finalisation:

The valve is closed, and the hot tapping equipment is withdrawn from the pipeline once the welding and inspection are finished. Once the new section of the pipeline has been installed and connected to the existing pipeline, the pipeline can be put back into operation.

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Welding Process Measurements

The variables in welding processes can be categorised based on whether they can be measured or altered and if these actions can be performed online or offline. According to this classification, welding process factors can be split into five fundamental categories:

  • Fixed parameters that cannot be changed by the operator but are specified in the process design.
  • Online adjustability that can be changed during the procedure
  • Adjustable offline, which can be changed only before the procedure begins
  • Online quantifiable, measurable during the procedure
  • Offline quantifiable, measurable only after the process has concluded

Why is Wellube known as a professional service provider?

Because of their vast experience, high technical proficiency, and dedication to safety, Wellube is regarded as a competent service provider in Hot Tap Online Welding.
The welding professionals at Wellube are highly qualified, certified, and trained in the newest welding methods and tools. They’ve worked on various pipelines, vessels, and systems in fields like oil and gas, chemical, water treatment, and power production. They’ve also performed Hot Tap, Online Welding.

Hot Tap Online Welding by Wellube is performed using cutting-edge machinery and technology, such as specialised drilling, welding, and inspection tools. To guarantee that the welding operation is carried out securely and effectively without causing any harm to workers or damage to the pipeline or vessel, they also adhere to strict safety standards and rules.

In addition to pipeline maintenance, modification, and new pipeline installations, Wellube offers various Hot Tap Online Welding services. Additionally, they give 24/7 support and assistance to guarantee that their clients’ pipelines or vessels are operational as soon as feasible. They also offer customised solutions to match the unique demands of their clients.

Overall, Wellube is a reputable and skilled service provider in Hot Tap Online Welding due to their technical proficiency, experience, dedication to safety, and diversity of services.

The range of Wellube’s work includes:

  • Managing projects and engineering.
  • The acquisition and construction of structural and piping.
  • Service provision for specialised welding.
  • On the active, functioning natural gas line supplying the state’s gas supply, there is welding.

FAQ's

The benefits of online welding are:

  • Reduced downtime: By performing welding while the equipment is still in operation, there is no need for a shutdown, which saves time and money.
  • Increased safety: In-service welding eliminates the need to take equipment offline, reducing the risk of accidents and improving safety for workers.
  • Cost-effective: In-service welding eliminates the need for shutdowns, making it a more cost-effective method of maintenance and repair.

Recommended flow velocity for Liquids is 0.5 m/sec to 1.75 m/sec and Gas is 0.4 m/sec to 9 m/sec.

Hot-tap welding shall not be performed on any material with a maximum operating temperature greater than 370°C; and any material with a minimum operating temperature less than -20°C.

Hot-tap welding should not normally be performed on materials which require post-weld heat treatment. However, if stress relieving or post-weld heat treatment is required, a specialist service provider such as Wellube can be consulted to assess the feasibility.

For flammable medium pipelines, it is not permitted to weld in no flow conditions due to safety factors. A minimum purge velocity of 0.4 m/sec should be maintained throughout the welding cycle.

Why choose Wellube?

Our extensive global track record for providing integrated hot tapping and line stopping services is supported by our ability to provide online welding or live-line welding services. We are one of the industry’s most trusted resources for pipeline intervention and flow management services.

Wellube consists of a highly-experienced certified team of live-line welders who follow a strict safety and quality program.

By getting our integration solutions for your hot tapping/line stopping and online welding requirements, you not only reduce the risk and cost of your project but also ensure a predictable service and safe execution.

Contact our technical expert to find a bespoke solution
for your operational challenges

Enquire Now

FAQ's

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