Investigation Report

Honeywell Geismar Chlorine and Hydrogen Fluoride Releases

CSBU.S. Chemical Safety and Hazard Investigation Board

Honeywell Geismar Chlorine and Hydrogen Fluoride Releases

Read at CSBOpens the publisher’s page on csb.gov

Summary

Investigation of three releases at Honeywell Geismar’s HFC-245fa unit between 2021 and 2024, involving fatal HF exposure, a corrosion-driven reboiler explosion and serious injury during gasket replacement. The report examines mechanical integrity, startup procedures, protective equipment, organisational change and capital funding, recommending independent auditing and safer-technologies analysis.

Topics

About This Record
Publisher
U.S. Chemical Safety and Hazard Investigation Board
Type
Investigation Report
Date
27 May 2025
Topic
Corrosion, Explosion, Hazardous Substances, Loss of Containment, Process Safety
Activity
Inspection and Maintenance
Equipment
Gas Detector, Personal Protective Equipment, Pressure Vessel, Process Pipework and Pipelines, Valve
Control
Independent Audit and Verification, Lockout and Tagout, Management of Change, Operating and Work Procedures
Sector
Downstream and Process Industries
Link
Checked , working
Record
csb-honeywell-geismar-chlorine-and-hydrogen-fluoride-releases · added 2 September 2026

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