Phases of Pipeline Construction: An Overview

Once the route is defined, our engineering team develops detailed designs to ensure safety, integrity, and compliance with all applicable codes and standards. During a pressure test, the pipeline is filled with water, compressed air, or other gas and the internal pressure is raised to a specified level above the intended maximum operating pressure. All newly constructed hazardous liquid and natural gas transmission pipelines must be pressure tested before they can be placed into service. Care is taken to protect the pipeline and coating from damage caused by sharp rocks and abrasions as the backfill is placed into the trench. Several different types of coatings may be used to coat field welds, such as two-part epoxy. Typically, each welder must successfully complete test welds using the same process of pipe welding to be used in the project.

• If the technician identifies any defects, the weld is either repaired and re-inspected or removed entirely.
• There are many significant differences between the design of hazardous liquid and natural gas transmission pipeline systems.
• Additionally, valve stations are built above the right-of-way along the pipeline, allowing operators to shut off sections of the line for maintenance or in an emergency.
• Finally, the weld joints are inspected with x-ray to ensure their quality.
• Landowners have the option of selling the timber themselves, or allowing the company responsibility for its sale or disposal.

These differences involve materials and components used, safety and environmental considerations, and a host of other design topics. There are many significant differences between the design of hazardous liquid and natural gas transmission pipeline systems. FERC also considers whether a pipeline can be placed near or within an existing pipeline, power line, highway, or railroad right-of-way. Once a natural gas pipeline company proposes the primary route or location, it is examined and considered by FERC.

State-run Petroperu is working on a framework agreement with its counterpart Petroecuador to connect oil wells in Ecuador with Peru’s northern pipeline, its chairman https://newsgary.com/what-needs-to-be-paid-attention-to-if-the-services.html said. The project is part of efforts to strengthen bilateral oil cooperation and reportedly has US support. From feasibility to flow, Burrow Global’s pipeline services deliver safe, efficient, and cost-effective solutions for oil, gas, hydrogen, and CO₂ systems.

Inspection and Quality Assurance

After the pipe is delivered to the right-of-way, a stringing crew will carefully distribute the various pipe sections per the design plan. Generally, sections are between 40 and 80 feet in length and are designed specifically for their intended location in the pipeline. State and local regulations may prescribe additional requirements https://cottageindesign.com/main-real-estate-market-trends-in-2013.html beyond federal pipeline regulations. A pipeline system may consist of various line pipe sizes, compressor or pump stations, control rooms, meter regulator stations, breakout tanks, storage facilities, and valves or other appurtenances.

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The project involves engineering, procurement, construction, installation and commissioning (EPCIC) of three new well-head platforms, one riser platform, multiple segments of subsea pipelines and cables, and brownfield modifications to existing offshore installations. Construction is set to begin on a new drinking-water pipeline section across Pineview Reservoir in Utah as part of a $100-MM project to replace 6.4 mi of aging pipeline serving the Ogden area. Sempra Infrastructure, a subsidiary of Sempra, has announced a 20-yr sales and purchase agreement (SPA) with Petrobras, under which Sempra Infrastructure will supply approximately 800,000 tons per year (tpy) of liquefied natural gas (LNG).

While existing roads are used when possible, temporary access roads are also constructed to create direct paths from staging areas to the pipeline ROW. This page walks you through the process of a natural gas pipeline currently being constructed. The contract wins span onshore, offshore and diversified critical infrastructure projects globally, underlining the company’s continued expansion following a strong 2025.

Step 1: Construction Staging Areas & Storage Yards

Building a pipeline is a complex process that requires precision, planning, and collaboration across multiple disciplines. Looking for a quality and affordable builder for your next project? Depending on the location and circumstances, this could involve site restoration including replacing topsoil, repairing irrigation systems, applying fertilizer, grass seed, and other actions https://oneworldmiami.com/why-construction-needs-construction-forests-and.html that may be necessary. If the pipe does fail, these defects are repaired, or cut out, and the pressure test will be repeated to establish the maximum operating pressure of the pipeline. As the backfill operations begin, the excavated material is returned to the trench in reverse order, with the subsoil put back first, followed by the topsoil. The pipeline is lowered into the trench in a smooth and uniform manner to prevent overstressing and damaging the pipeline.

• Depending on the location and circumstances, this could involve site restoration including replacing topsoil, repairing irrigation systems, applying fertilizer, grass seed, and other actions that may be necessary.
• Woodway Energy Infrastructure will develop a 22-mile, 30-inch natural gas pipeline to supply behind-the-meter power generation for a hyperscale data center development, with service targeted for first-half 2028.
• Every successful pipeline begins with a thorough planning process.
• Pipes are laid above ground beside the trench, or within the trench on top of supportive sandbags in steep terrain.
• Sidebooms are used to pick up, support, and align each section of pipe with the next section to make the first pass of each weld.

The report includes the approximate miles of new pipelines constructed per year along with the reasoning and assumptions used to calculate these numbers. To ensure enough inspections are being conducted, PHMSA uses Annual Reports (AR) from pipeline operators to approximate the miles of newly constructed pipelines built each year. In the last decade, the pipeline industry experienced unparalleled growth to satisfy the Nation’s energy demand and bring new sources of supply to the market. Pipeline construction inspections also verify operators follow federal regulatory requirements. The first element of this mission is proper design and construction of pipelines. South Korea and the U.S. have agreed on the size of Seoul’s planned investment in a gas project in Texas at around $22.3 B, citing unidentified officials and politicians.

Regardless of the length of the pipeline, the construction process must be carefully planned to ensure the safety and integrity of the new pipeline and then executed to meet construction schedules and weather conditions. Pipeline companies must determine possible routes for the new pipelines; acquire the right-of-way (ROW) to build, operate and maintain the pipelines; engineer the actual system designs; and construct the pipelines.