CSB Issues New Guidance on Accidental Release Reporting Rule

U.S. Chemical Safety Board (CSB), September 6, 2022

The U.S. Chemical Safety Board (CSB) recently released guidance on the agency’s “Accidental Release Reporting Rule,” which went into effect in March 2020. The new guidance is provided so that owners and operators of facilities involved in the production, processing, handling, or storage of chemical substances may better understand the rule and comply with the requirement to submit a report to the CSB within eight hours after an accidental release has occurred that results in a fatality, serious injury, or substantial property damage.

The CSB’s guidance document clarifies key terms found in the reporting regulation, such as what constitutes regulated substances for the reporting requirement and the threshold amounts related to property damage for which reporting is required. The guidance also addresses specific scenarios and emphasizes that if an owner or operator is unsure about whether to report a release to the CSB, they should do so, rather than risk violating the rule by failing to report. The guidance makes clear that while there is no sanction for reporting an accidental release that, in retrospect, did not have to be reported, the failure to make a required report could result in an enforcement action.

CSB Interim Executive Steve Owens said, “Our goal is to make sure that owners and operators report chemical releases to the CSB as required by law. While many companies already have been complying with the rule and submitting their required reports, this guidance should help resolve any uncertainties about the reporting requirement. If someone is unsure about what to do, they should report, rather than risk violating the rule.”  

In July 2022, the CSB released its first set of data collected from the reporting rule, which includes all the reportable events received by the CSB since the rule went into effect. The CSB’s data is comprised of 162 incidents, of which 25 resulted in fatalities. In addition, 92 of the events resulted in serious injuries, and there were 68 instances of substantial property damage.

The full text of the regulation governing the reporting of accidental release can be found at title 40 Code of Federal Regulations (CFR) Part 1604, Reporting of Accidental Releases:​

The CSB’s Accidental Release Reporting Rule webpage can be found at:


About the CSB

The CSB is an independent, non-regulatory federal agency whose mission is to drive chemical safety change through independent investigations to protect people and the environment. The agency’s board members are appointed by the President and confirmed by the Senate. CSB investigations look into all aspects of chemical incidents, including physical causes such as equipment failure as well as inadequacies in regulations, industry standards, and safety management systems. The CSB does not issue citations or fines but makes safety recommendations to companies, industry organizations, labor groups, and regulatory agencies such as OSHA and EPA. For more information, please visit

Comments and Discussion

There are no comments yet.

Add a Comment

Please log in or register to participate in comments and discussions.

Inspectioneering Journal

Explore over 20 years of articles written by our team of subject matter experts.

Company Directory

Find relevant products, services, and technologies.

Training Solutions

Improve your skills in key mechanical integrity subjects.

Case Studies

Learn from the experience of others in the industry.


Inspectioneering's index of mechanical integrity topics – built by you.

Industry News

Stay up-to-date with the latest inspection and asset integrity management news.


Read short articles and insights authored by industry experts.

Expert Interviews

Inspectioneering's archive of interviews with industry subject matter experts.

Event Calendar

Find upcoming conferences, training sessions, online events, and more.


Downloadable eBooks, Asset Intelligence Reports, checklists, white papers, and more.

Videos & Webinars

Watch educational and informative videos directly related to your profession.


Commonly used asset integrity management and inspection acronyms.