
The Colonial Pipeline is a 5,500-mile-long pipeline that carries refined petroleum products, including gasoline, diesel, heating oil, and jet fuel, from Houston, Texas, to Linden, New Jersey, supplying the East Coast of the United States. Over the years, the pipeline has experienced several disruptions, including ruptures and cyber-attacks, which have resulted in fuel shortages, environmental damage, and increased fuel prices. One notable incident involving diesel fuel occurred in 1991 when a rupture in South Carolina allowed approximately 500,000 gallons of diesel to spill into waterways, impacting the environment and local water supplies. The Colonial Pipeline's significant role in diesel fuel distribution makes it vulnerable to disruptions, highlighting the need for robust security measures and alternative supply sources.
| Characteristics | Values |
|---|---|
| Length | 5,500 miles |
| Origin | Houston, Texas |
| Destination | Port of New York and New Jersey |
| States served | Texas, Louisiana, Mississippi, Alabama, Georgia, South Carolina, North Carolina, Virginia, Maryland, Delaware, Pennsylvania, New Jersey, Tennessee |
| Average daily delivery | 1x108 US gallons |
| Products carried | Gasoline, home heating oil, aviation fuel, refined petroleum products, jet fuel, diesel fuel |
| Number of products on the approved product list | 86 |
| Number of regular products | 15-20 |
| Number of pipeline lines | 2 |
| Line 1 diameter | 40 inches |
| Line 2 diameter | 36 inches |
| Line 1 products | Gasoline |
| Line 2 products | Distillate products (jet fuel, diesel fuel, home heating oil) |
| Line rupture incidents | 1991, 1993, 1994, 2012 |
| Cause of 2012 line rupture | Anomalies on the pipeline |
| Cause of 2021 line shutdown | Ransomware attack |
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What You'll Learn
- The Colonial Pipeline delivers around 108 million US gallons of diesel fuel daily
- The pipeline's 1991 rupture caused over 500,000 gallons of diesel fuel to spill
- The 2012 pipeline shutdown in Tennessee was due to reports of gasoline odors
- The 2021 Colonial Pipeline cyberattack caused diesel fuel shortages
- The pipeline's congestion has increased costs for wholesale diesel buyers

The Colonial Pipeline delivers around 108 million US gallons of diesel fuel daily
The Colonial Pipeline is a vital mode of shipment for transportation fuels along the East Coast of the United States, particularly the Southeast. It carries refined petroleum products, including gasoline, diesel, heating oil, and jet fuel, from Houston, Texas, on the Gulf Coast, to Linden, New Jersey, and serves several markets along the route through various branch lines. The pipeline is approximately 5,500 miles long and delivers a daily average of 108 million US gallons of fuel.
The Colonial Pipeline plays a crucial role in supplying diesel fuel to the East Coast, especially the Southeast region. Diesel fuel is one of the key petroleum products transported through the pipeline, along with gasoline, jet fuel, and home heating oil. The pipeline has two main lines: one devoted primarily to gasoline and the other carrying distillate products, including diesel fuel.
The impact of the Colonial Pipeline on diesel fuel supply became evident during the 2021 ransomware attack on the pipeline. The shutdown of the pipeline due to the attack resulted in diesel fuel shortages at truck stop chains in the Southeast, affecting states such as Georgia, North Carolina, Virginia, South Carolina, and Tennessee. The Colonial Pipeline crisis highlighted the reliance of these states on the pipeline for their diesel fuel supply.
The pipeline has also experienced several ruptures and spills over the years, which have impacted diesel fuel. In 1991, a rupture in South Carolina allowed more than 500,000 gallons of diesel fuel to flow into Durbin Creek, affecting 26 miles of waterways. Another rupture occurred in Virginia in 1993, spraying diesel fuel into the air and coating nearby power lines, trees, and buildings. These incidents underscore the environmental and logistical implications of diesel fuel transportation through the Colonial Pipeline.
The Colonial Pipeline's role in diesel fuel distribution has also contributed to congestion and competition for space on the pipeline. The high demand for diesel fuel and the limited capacity of the pipeline have driven up costs for wholesale diesel buyers. The complex dynamics of line space trading and the emergence of secondary markets reflect the significant influence of the Colonial Pipeline on the diesel fuel market in the regions it serves.
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The pipeline's 1991 rupture caused over 500,000 gallons of diesel fuel to spill
The Colonial Pipeline is a significant mode of shipment for transportation fuels for the East Coast, particularly for several states in the southeastern United States. It carries refined petroleum products, including gasoline, diesel, heating oil, and jet fuel. The pipeline is approximately 5,500 miles long, originating in Houston, Texas, on the Gulf Coast and terminating at the Port of New York and New Jersey.
On December 19, 1991, at 9:51 p.m., Colonial's Line 2 ruptured about 2.8 miles downstream of the company's Simpsonville, South Carolina, pump station. This 36-inch-diameter petroleum products pipeline ruptured, releasing over 500,000 gallons (13,100 barrels) of diesel fuel into Durbin Creek. The environmental impact was significant, affecting 26 miles of waterways, including the Enoree River, which flows through the Sumter National Forest. The spill also disrupted water supplies for Clinton and Whitmire, South Carolina.
The 1991 rupture was not an isolated incident for the Colonial Pipeline. There have been several other spills and ruptures over the years, including seven different spills in the 1990s alone. In October 1994, heavy rainfall in the Houston area caused failures in eight pipelines, including two Colonial Pipeline lines. In February 1999, a spill in Knoxville, Tennessee, released approximately 53,550 gallons of fuel oil, polluting the Tennessee River and impacting nearby homes. In June 1996, a rupture in South Carolina resulted in the release of about 957,600 gallons of fuel oil into the Reedy River, causing significant environmental damage and killing approximately 35,000 fish and other wildlife.
The Colonial Pipeline has faced scrutiny for its role in these incidents. In 2000, the United States Environmental Protection Agency (EPA) filed a complaint against Colonial for violations of the Clean Water Act. The company has also been subject to civil penalties and fines from various government agencies. Despite these incidents and the potential for future cyber-attacks on critical infrastructure, the Colonial Pipeline remains a vital component of the fuel distribution network in the United States.
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The 2012 pipeline shutdown in Tennessee was due to reports of gasoline odors
The Colonial Pipeline is the largest oil product pipeline in the US, stretching over 5,500 miles from Houston, Texas, to the Port of New York and New Jersey. It delivers an average of 108 million US gallons of gasoline, home heating oil, aviation fuel, and other refined petroleum products daily. One of the main lines is devoted primarily to gasoline, while the other carries distillate products such as jet fuel, diesel fuel, and home heating oil.
On October 3, 2012, the Colonial Pipeline shut down Line 19 and Line 20 in Chattanooga, Tennessee, due to reports of gasoline odors. There were concerns that about 500 gallons of gasoline may have been released from Line 19, which carries gasoline from Atlanta to Nashville. As a precaution, Line 20, a distillate line running parallel to Line 19, was also shut down. This line carries diesel fuel, jet fuel, and other products.
The shutdown was initiated after an odor of gasoline was reported near the Moccasin Bend Delivery facility in the Chattanooga area. Colonial Pipeline reported that repairs on Line 19 were underway, and external damage to the pipe was discovered. The initial estimated restart time was delayed to ensure the integrity of the pipeline. Line 20, the distillate line, was also inspected and found to be undamaged.
The 2012 pipeline shutdown in Tennessee was a precautionary measure taken by Colonial Pipeline to ensure the safety and integrity of their infrastructure and the surrounding environment. By addressing the reports of gasoline odors, the company mitigated potential risks associated with fuel leaks. This incident highlights the importance of proactive measures in maintaining the safe operation of critical energy infrastructure.
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The 2021 Colonial Pipeline cyberattack caused diesel fuel shortages
The Colonial Pipeline is a 5,500-mile pipeline that carries refined petroleum products, including gasoline, diesel, heating oil, and jet fuel. It originates in Houston, Texas, on the Gulf Coast and extends to the New York City area, terminating at the Port of New York and New Jersey. The pipeline serves the East Coast, particularly the southeastern United States, where it is a significant mode of shipment for transportation fuels.
In May 2021, the Colonial Pipeline was the target of a cyberattack perpetrated by the hacker group DarkSide, which infiltrated the pipeline's computer systems and encrypted billing files. As a result, the pipeline temporarily shut down, causing fuel shortages along the East Coast. This included shortages of diesel fuel, as well as gasoline. The attack highlighted the pipeline's critical role in fuel distribution and the vulnerability of energy infrastructure to cyber threats.
The Colonial Pipeline controls nearly half of the gasoline, jet fuel, and diesel supply along the East Coast. The shutdown of the pipeline led to long lines at gas stations and a spike in retail gas prices. It also disrupted the supply chain for businesses and communities that rely on the pipeline for fuel.
The pipeline restarted operations several days after the attack, but the fuel shortages continued to impact drivers in parts of the Southeast. Truck stop chains reported temporary shortages of diesel fuel and gasoline, affecting commercial drivers in states such as Georgia, North Carolina, Virginia, South Carolina, and Tennessee.
The 2021 Colonial Pipeline cyberattack brought attention to the importance of securing critical infrastructure, such as oil and gas pipeline networks, from cyber threats. Federal and state governmental agencies undertook actions to enhance the security of these networks and protect against future cyberattacks.
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The pipeline's congestion has increased costs for wholesale diesel buyers
The Colonial Pipeline is a critical mode of shipment for transportation fuels for the East Coast, particularly the southeastern United States. It carries refined petroleum products such as gasoline, diesel, heating oil, and jet fuel from Texas to New Jersey and serves several markets along the route. The pipeline has a finite capacity, and when demand exceeds this capacity, congestion occurs.
In 2016, worsening congestion on the Colonial Pipeline spawned secondary markets for space on the system, driving up costs for wholesale diesel and gasoline buyers. Refiners, retailers, and trading houses competed for space on the line, as a 300,000-barrel-per-day expansion between 2011 and 2013 failed to ease traffic. Customers, including Costco Wholesale Corp, complained about the increased costs associated with line space trading.
The congestion on the Colonial Pipeline can be attributed to several factors. Firstly, the pipeline has a defined size, and when demand exceeds the capacity of the pipe, congestion occurs. Secondly, the reliance on the pipeline has grown over time due to increased domestic production of oil and gas, which has reduced refining capacity in the Northeast. This has resulted in a greater volume of product being transported through the pipeline.
Additionally, the pipeline itself has a finite capacity, and regardless of the demand, there is a limit to how much it can carry in a given timeframe. This constraint can further contribute to congestion, especially during periods of peak demand. The congestion on the Colonial Pipeline has highlighted the need for improvements and upgrades to the infrastructure. Several of the interstate pipelines are over 40 years old and require replacement or safety upgrades to increase their capacity and reduce congestion.
In summary, the congestion on the Colonial Pipeline has had a direct impact on the costs for wholesale diesel buyers. The increased competition for space on the pipeline has driven up prices, and customers have had to adapt to the system, resulting in higher business costs. The situation has also brought attention to the limitations of the current infrastructure and the need for ongoing maintenance and upgrades to meet the evolving demands of the energy market.
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Frequently asked questions
The Colonial Pipeline is a 5,500-mile-long pipeline that carries refined petroleum products such as gasoline, diesel, heating oil, and jet fuel from Houston, Texas, to Linden, New Jersey.
The Colonial Pipeline controls nearly half of the diesel fuel flowing along the East Coast. In May 2021, a ransomware attack on the pipeline caused a shutdown, resulting in diesel and gas shortages at truck stop chains in the Southeast.
Yes, there have been several diesel fuel spills from the Colonial Pipeline. In 1991, a rupture in the pipeline released over 500,000 gallons of diesel fuel into Durbin Creek, impacting 26 miles of waterways. In 1993, another rupture near Herndon, Virginia created a geyser that sprayed diesel fuel 75 feet into the air. In 1994, a failure in the pipeline during heavy rainfall caused a diesel fuel spill into the San Jacinto River.










































