Pipeline safety laws fall under federal authority in Title 49, United States Code, chapter 601, Safety. Title 49 establishes the framework for promoting pipeline safety with federal authority for regulation of interstate pipeline facilities. Federal authority delegates to states all or part of the responsibility for intrastate pipeline facilities via an annual certification or agreement. This law empowers the IUB to obtain a certification from the federal government to regulate gas pipeline safety for intrastate natural gas operators. IUB Safety and Engineering staff enforces pipeline safety rules contained in the federal regulations at 49 CFR parts 191, 192, 193, and 199, as well as state regulations at 199 Iowa Administrative Code chapter 10, Intrastate Gas and Underground Gas Storage and chapter 19, Service Supplied by Gas Utilities.
Safety and Engineering staff inspect 57 natural gas distribution system operators, three LPG distribution system operators, and 41 intrastate and five interstate natural gas transmission pipeline operators for compliance with pipeline safety standards. The inspections ensure that gas operators are in compliance with the federal and state pipeline safety standards. IUB Safety and Engineering works closely with the federal U.S. Department of Transportation, Pipeline and Hazardous Materials Safety Administration's State Programs (PHMSA), to insure pipelines are safely operated and maintained.
One Call Underground Locate Service, Damage Prevention, One Call Complaints and Violation Enforcement by the Attorney General
To avoid a potential pipeline accident caused by excavation, have the location of all utility lines marked before excavating by hand or with equipment. In fact, to comply with Iowa law, in accordance with Iowa Code chapter 480, Underground Facilities Information, a person must contact Iowa One Call at 811 or 800.292.8989 a minimum of two days (excluding Saturday, Sunday and state holidays) before excavation commences. After Iowa One Call is contacted, the following will happen:
- Operators with underground facilities in the area where the excavation is planned are notified. This includes natural gas and power utilities, communications companies, and cities and towns.
- Within 48 hours after being contacted, utilities either mark their underground facilities with color-coded paint marks or flags, or tell the excavator they have no lines in the area.
If a contractor is performing the excavation work, a person should make sure that the contractor calls Iowa One Call two days prior to the commencement of excavating.
Visit this webpage for more information about damage prevention and Iowa One Call.
VIDEO: View the Iowa One Call Damage Prevention video by the IUB and Iowa Attorney General's Office.
2021 IUB One Call Law and Damage Prevention Survey
IUB Safety and Engineering conducted a Process Assessment and Learning Aid Survey in fall 2021 regarding Iowa's One Call law. The survey was sent to excavators, operators, contractors, and other stakeholders as part of the IUB 2020 Damage Prevention Program and included 32 questions in seven areas. More than 240 responses were received. The survey results helped the IUB gain a better understanding of the reasons for noncompliance with Iowa's One Call law, which protects underground utility infrastructure, and the survey provided educational resources to excavators, contractors, locators, and stakeholders regarding Iowa's One Call process. Click the link below to view survey responses.
Searching for Inspection Reports
Inspection reports and utility responses are on file in the IUB's electronic filing system (EFS). Inspection reports and responses are filed in each company's natural gas reports (RG) docket. To search for these documents, click the EFS link, select Search from the top navigation menu and scroll down to Docket Search. This will open a docket search screen. Select RG - Reports, Natural Gas from the Docket Type drop down box and then select the company name from the Participants drop down box. Be sure to click the Add button to add the company to the search parameters. After entering the search terms, click the Search button. This will display the company's RG-Docket Summary Page. Finally, click on the Documents in EFS link to display the list of documents on file for that company.
Transportation of Natural Gas
Statistics indicate that transporting natural gas through pipelines is the safest mode of transportation. As long as natural gas flows through a closed controlled system, it remains a safe product. Only when gas unexpectedly escapes from a pipeline does it have the potential to be a hazard to life, property, and the environment. There are many causes and contributors to pipeline failures. The federal Office of Pipeline Safety compiles data on pipeline accidents and their causes. This data generally indicates that "outside force" damage is the largest single specified cause of all pipeline accidents. Outside force damage generally occurs when someone is digging or excavating near the pipeline. Other causes of pipeline accidents and incidents are categorized and include:
- Construction errors
- Material defects
- Pipeline corrosion, both internal and external
- Operator error (incorrect operation by operator personnel)
- Malfunction of control systems or relief equipment
Searching for Incident Reports
Incident (or accident) reports are on file in the electronic filing system (EFS). Incident reports are filed in each company's accidents and outages (H) docket. To search for an incident report, click the EFS link, select Search from the top navigation menu and scroll down to Docket Search. This will open a docket search screen. Select H - Accident -- Outages from the Docket Type drop down box and then select the company name from the Participants drop down box. Be sure to click the Add button to add the company to the search parameters. To narrow the search to natural gas service incidents only, click Gas in the Industry Type box. After entering the search terms, click the Search button. This will display the company's H-Docket Summary Page. Finally, click on the Documents in EFS link to display the list of documents on file in that company's H-Docket.
2022 IUB-PHMSA TQ Pipeline Safety Conference
The IUB hosted the TQ Pipeline Safety Conference in February 2022. The next conference will be in 2025. Click on the links below to review the 2022 conference materials and download presentations.
PHMSA - O&M Procedures
Attorney General - Iowa One Call Law and Enforcement
GTI Technology Insights
Pipeline Safety Program Contact Information:
Safety and Engineering Section
Iowa Utilities Board
Media Inquiries Contact Information:
Iowa Utilities Board
PHMSA Safety Performance Listings by State