# Illinois Commerce Commission — Pipeline Safety Interpretation

- **operation:** document
- **citation:** PI-23-0002
- **title:** Illinois Commerce Commission — Pipeline Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2023-04-17
- **effective on:** Not available
- **summary:** PI-23-0002 response to Illinois Commerce Commission concerning 195.0.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-23-0002.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-23-0002.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-pi-23-0002
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/docs/standards-rulemaking/pipeline/interpretations/77481/illinois-commerce-commission-pi-23-0002-04-14-2023-part1950.pdf
**body:**

<<<PAGE 1>>>

U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
April 13, 2023
Mr. Matthew L. Harvey
Deputy General Counsel
Office of General Counsel
Illinois Commerce Commission
160 N. La Salle St., Ste. C-800
Chicago, IL 60601
Dear Mr. Harvey:
In a letter to the Pipeline and Hazardous Materials Safety Administration (PHMSA), dated
January 10, 2023, you requested an interpretation of the Federal pipeline safety regulations in
49 Code of Federal Regulations (CFR) Part 195 with respect to its applicability to a proposed
carbon dioxide pipeline within the state of Illinois.
You stated a pipeline operator seeks a certificate under the Illinois Carbon Dioxide
Transportation and Sequestration Act to construct a pipeline which will be used to transport
carbon dioxide to a sequestration site within Illinois. You stated the applicant informed you the
pipeline will be transporting at least 98 percent carbon dioxide in a fluid state and will be
compressed to a supercritical state, and that the carbon dioxide will maintain the 98 percent
concentration level and the fluid state throughout the pipeline system. You ask whether:
Question 1: PHMSA regulates the safety of interstate pipelines carrying shipment of
carbon dioxide under 49 CFR Part 192, Part 195, or under any other statute or regulation;
and
Question 2: If the answer to PHMSA’s first question is yes, the extent and the frequency
of safety inspections, record audits or field audits of such a pipeline.
To answer your questions the scope and definition of Part 195 for carbon dioxide are reprinted
below.
The scope of 49 CFR Part 195 states:
49 CFR § 195.0 This part prescribes safety standards and reporting requirements for
pipeline facilities used in the transportation of hazardous liquids or carbon dioxide.
Carbon dioxide is defined in 49 CFR § 195.2 as:
The Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety provides written clarifications of the Regulations (49 CFR
Parts 190-199) in the form of interpretation letters. These letters reflect the agency's current application of the regulations to the specific facts
presented by the person requesting the clarification. Interpretations are not generally applicable, do not create legally-enforceable rights or
obligations, and are provided to help the specific requestor understand how to comply with the regulations.

<<<PAGE 2>>>

Page 2 of 2
Carbon dioxide means a fluid consisting of more than 90 percent carbon dioxide
molecules compressed to a supercritical state.
Based on the above scope and definition of Part 195, PHMSA’s responses to your questions are
as follows:
Response to Question 1: Yes, per statutory authority (49 U.S.C. § 60101 et seq.),
PHMSA regulates the transportation of carbon dioxide by pipeline under 49 CFR
Part 195 if the carbon dioxide consists of more than 90 percent of the composition in a
supercritical state.
Response to Question 2: PHMSA uses an integrated inspection process utilizing risk
information and data to better focus inspection resources on higher risk facilities and
areas of concern. By using information data about a specific pipeline system, PHMSA
can identify regulatory requirements that will have the highest priority during an
inspection. This data-driven process allows PHMSA to focus inspection resources on
regulatory provisions which address the greatest identified risks and concerns.1 While
PHMSA serves as the federal pipeline safety regulator, pipeline operators must know,
understand, and manage the risks associated with their own pipeline facilities. An
operator is required to meet all applicable 49 CFR Part 195 requirements that include:
annual accident and safety related condition reporting, design, construction, pressure
testing, operation and maintenance, qualification of pipeline personnel, and corrosion
control.
The state of Illinois is not participating in federal and state cooperative partnership for hazardous
liquid (49 CFR Part 195) pipelines. Therefore, PHMSA performs the safety inspections
(including design and construction of new pipelines), record audits or field audits of such
pipelines within the state of Illinois. The pipeline operator is responsible for safely operating its
pipelines and for meeting the 49 CFR Part 195 requirements to maintain pipeline safety.
If we can be of further assistance, please contact Tewabe Asebe at 202-366-5523.
Sincerely,
John A. Gale
Director, Office of Standards
and Rulemaking
Attachments
1 For additional details regarding PHMSA’s inspection process, see https://www.phmsa.dot.gov/regulatory-
compliance/pipeline/field-operations-overview.The Pipeline and Hazardous Materials Safety Administration, Office of Pipeline Safety provides written clarifications of the Regulations (49 CFR
Parts 190-199) in the form of interpretation letters. These letters reflect the agency's current application of the regulations to the specific facts
presented by the person requesting the clarification. Interpretations are not generally applicable, do not create legally-enforceable rights or
obligations, and are provided to help the specific requestor understand how to comply with the regulations.

<<<PAGE 3>>>

STATE OF ILLINOIS
ILLINOIS COMMERCE COMMISSION
OFFICE OF GENERAL COUNSEL
January 10, 2023
Angela Pickett
Community Liaison
Operations and Standards, Central Region
US Department of Transportation
Pipeline and Hazardous Materials Safety Administration
901 Locust, Kansas City, MO 64106
Office of Pipeline Safety (PHP-30)
PHMSA, U.S. Department of Transportation
1200 New Jersey Avenue SE., Washington, DC 20590-0001
Via electronic mail to angela.pickett@dot.gov; phmsa.pipelinesafety@dot.gov
Re: PHMSA regulation and inspection with respect to pipelines used for shipment of
carbon dioxide
Dear Ms. Pickett:
I write to you for the purpose of obtaining a written regulatory interpretation under
49 C.F.R. §190.11 from the Pipeline and Hazardous Materials Safety Administration
(“PHMSA”) regarding a matter currently pending before the Illinois Commerce
Commission (“ICC”), which has been assigned ICC Docket Number 22-0497. A pipeline
operator (“Applicant”) seeks a certificate under the Illinois Carbon Dioxide Transportation
and Sequestration Act (“CO2 Act”; 220 ILCS 75/1, et seq.) to construct a pipeline which
will be used to transport carbon dioxide (“CO2
”) to a sequestration site within Illinois.
Based on the information currently available to the ICC Staff and the public, the pipeline
in question will be jurisdictionally interstate. The Applicant states that “[t]he product
transported by the pipeline will be at least 98% carbon dioxide in a fluid state and will [be]
compressed to a supercritical state. The carbon dioxide will maintain the 98%
concentration level and the fluid state throughout the pipeline system.” (Applicant Ex.
6.2, 6.) The Applicant also states that “[b]ecause the segments of pipeline will be
transporting carbon dioxide, at least part of the time, in its supercritical state, it is within
the pipeline safety jurisdiction of PHMSA, an agency within the USDOT.” Id. at 2. The
Applicant further states that “the definition of ‘carbon dioxide’ in the PHMSA regulations
is ‘a fluid consisting of more than 90 percent carbon dioxide molecules compressed to a
160 N. La Salle St., Ste. C-800, Chicago, Illinois 60601

<<<PAGE 4>>>

supercritical state’ (emphasis added), not ‘maintained’ in a supercritical state. 49 C.F.R.
§195.2.” Id.
The ICC Staff respectfully requests a written regulatory interpretation from PHMSA
regarding the following questions:
1. Whether PHMSA regulates the safety of interstate pipelines carrying shipment of
carbon dioxide under 49 C.F.R. Part 192, Part 195, or under any other statute or
regulation; and
2. Whether, to what extent, and with what frequency PHMSA conducts safety
inspections, record audits or field audits of such a pipeline.
Please advise whether PHMSA requires additional information to provide a written
regulatory interpretation in response to this request. My name, address and telephone
number are as set forth below.
Thank you for your prompt attention to this matter.
Sincerely,
___________________________
Matthew L. Harvey
Deputy General Counsel
Office of General Counsel
Illinois Commerce Commission
160 N. La Salle St., Ste. C-800
Chicago, IL 60601
312 / 793-3243
matthew.harvey@illinois.gov
Michael Merchant, Executive Director, ICC
Natalia Delgado, General Counsel, ICC
Dr. James Zolnierek, Chief, Public Utilities Bureau, ICC
(all via e-mail)
2
- **truncated:** false
- **body characters:** 8618
