CSB Updated the Status of 12 Incident Recommendations – 12-4-25
Yesterday the Chemical Safety Board (CSB) updated their Recent Recommendation Status Updates page, closing four recommendations with acceptable alternative actions. These actions left 119 of 1025 recommendations open. Additionally, the CSB updated the open status of eight recommendations. The CSB took all of these actions on December 4th, 2025. The previous update was published on September 6th, 2025.
The four recommendations recently closed recommendations are:
TS USA Molten Salt Eruption - 2024-01-I-TN-R3 - TS USA,
LyondellBasell La Porte Fatal Chemical Release - 2021-05-I-TX-R1 – Lyondell Basell Industries,
LyondellBasell La Porte Fatal Chemical Release - 2021-05-I-TX-R2 – Lyondell Basell Industries, and
Aghorn Operating Inc. Waterflood Station Hydrogen Sulfide Release - 2020-01-I-TX-R7 - Aghorn Operating Inc.
Updated Open Investigations
Six of the eight ‘updated open investigation responses’ are associated with the TS USA Molten Salt Eruption accident that occurred on May 30th, 2024. The four updates were all assigned to TS and the HEF Group. The CSB changed the status to “Open – Acceptable Response or Alternate Response”.
Another updated investigation response is for the Foundation Food Group Fatal Chemical Release that occurred on January 28th, 2021. The updated response was assigned to the National Fire Protection Association (NFPA). It was changed to “Open – Acceptable Response or Alternate Response”.
The final updated open investigation response is for the Bio-Lab Lake Charles Chemical Fire and Release accident that occurred on August 27th, 2020. The updated response was assigned to Bio-Lab Lake Charles. It was changed to “Open – Acceptable Response or Alternate Response”.
TS USA Molten Salt Eruption
Incident Date: May 30th, 2024 Report Date: June 3rd, 2025
2024-01-I-TN-R3 – TS USA
“TS USA hired a regional health and safety officer responsible for the execution of their safety management system. TS USA has additionally appointed a representative with health and safety responsibilities for each of their facilities. Upon review of the documentation submitted by TS USA, the CSB concluded that the recommendation has been implemented.”
Closed – Acceptable Action
LyondellBasell La Porte Fatal Chemical Release
Incident Date: July 27th, 2021 Report Date: May 25th, 2023
2021-05-I-TX-R1 – Lyondell Basell Industries
“LYB’s initial and follow-up responses provided information that addressed all of the recommendation requirements. They updated and implemented their policy documents with procedures for working on live process equipment and associated permitting requirements to control hazardous energy and ensure sufficient procedures and safeguards are in place to prevent worker exposure to process fluid. Additionally, they provided supporting documentation demonstrating that all employees were trained on the updated policy documents.”
Closed – Acceptable Action
2021-05-I-TX-R2 – Lyondell Basell Industries
“LYB’s initial and follow-up responses provide information describing a position within their procedures for working on live process equipment meeting OSHA’s definition of competent person. Though this position does not encompass the duties traditionally addressed in a contractor management program specified by the recommendation, it does meet the operational and safety requirements of the recommendation. The actions taken by LYB meet the objectives or a majority of the objectives envisioned by the Board in issuing this recommendation.”
Closed – Acceptable Alternative Action
Aghorn Operating Inc. Waterflood Station Hydrogen Sulfide Release
Incident Date: October 26th, 2019 Report Date: May 21st, 2021
2020-01-I-TX-R7 – Aghorn Operating Inc.
“Aghorn’s initial and follow-up responses provided information that the recommendation was fully implemented. They provided a site security policy and installed perimeter fencing with access gates at applicable waterflood stations that employees lock in accordance with their policy meeting all of the requirements of the recommendation.”
Closed – Acceptable Action