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FAQ

We provide you answers to key questions about CCUS processes, safety, and technology.

What is CCUS?

Carbon Capture, Utilization, and Storage (CCUS) captures carbon dioxide (CO2) from industrial and power facilities before it enters the atmosphere. The CO2 is liquefied, transported, and permanently stored deep underground beneath impermeable caprock, where it safely mineralizes over time.

Is CCUS a new technology?

No, CCUS has been in use since the 1990s. According to the Global CCS Institute, there are 41 operational facilities worldwide, with many more in construction or development.

How does a CCUS project affect land use?

CCUS uses underground pore space for CO2 storage, with minimal above-ground impact from injection wells and monitoring equipment. Landowners can typically continue existing land use.

Does CCUS affect drinking water?

No. The U.S. EPA enforces strict regulations to ensure CO2 storage is far below groundwater levels and poses no threat to drinking water. Monitoring systems ensure safety.

Is CCUS safe?

Yes. CO2 is non-flammable and inert. It is transported through secure pipelines to EPA-regulated injection wells and stored in geologically stable formations.

What happens in the event of a leak?

CCUS sites are selected for their ability to securely trap CO2 for millions of years. Monitoring systems detect any issues, and injection stops immediately if a problem arises. Repairs are conducted promptly, often near the injection site.

Can CO2 pipelines or storage sites explode?

No. CO2 is neither explosive nor flammable.

Is CO2 hazardous?

CO2 is a non-flammable, naturally occurring gas. While it can displace oxygen at very high concentrations, it dissipates quickly under normal conditions.

What about blowouts?

Blowouts at CO2 injection sites are rare and release minimal CO2, which quickly disperses. Emergency protocols and training are in place to manage these events.

Can CCUS facilities be near sinkholes or salt domes?

No. Geological evaluations ensure CCUS sites avoid sinkholes or unstable areas. The EPA prohibits storage near unsuitable formations like salt domes.

Is CCUS regulated?

Yes. The U.S. EPA and Department of Energy enforce strict regulations for siting, construction, and operation of storage wells. Pipelines are overseen by the Pipeline and Hazardous Materials Safety Administration.

Are CO2 pipelines safe?

Yes. Over 5,000 miles of CO2 pipelines are currently operational in the U.S. Modern pipelines feature advanced materials, constant monitoring, and rapid response protocols to prevent and address leaks.

What ensures the safety and efficiency of CO2 transport?

Pipelines are designed to exceed federal safety standards, transporting highly purified CO2. Advanced materials and monitoring technology reduce risks and ensure reliability.

How is the storage field maintained long-term?

Storage fields are continuously monitored to detect pressure changes or anomalies. Maintenance crews address any issues, and injection stops if a problem is detected. Robust design prevents CO2 from reaching groundwater or the surface.

How are pipeline ruptures prevented?

Modern pipelines are monitored 24/7 for pressure changes or corrosion. Warning systems and real-time data ensure immediate shutdown and swift repairs if needed. Most failures result from third-party damage, which is mitigated with warning markers.