Investigation Report

LyondellBasell La Porte Fatal Chemical Release

CSBU.S. Chemical Safety and Hazard Investigation Board

LyondellBasell La Porte Fatal Chemical Release

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

Summary

This investigation examines the fatal chemical release during plug-valve actuator removal at LyondellBasell’s La Porte complex. Two workers died following exposure to acetic acid and methyl iodide. It compares similar incidents and examines valve design, pressure-retaining components, work procedures, training, isolation and pre-authorisation risk assessment.

Topics

About This Record
Publisher
U.S. Chemical Safety and Hazard Investigation Board
Type
Investigation Report
Date
25 May 2023
Topic
Hazardous Substances, Loss of Containment, Pressure Systems, Process Safety
Activity
Inspection and Maintenance
Equipment
Process Pipework and Pipelines, Valve
Control
Competence and Training, Energy and Process Isolation, Operating and Work Procedures, Risk Assessment
Sector
Downstream and Process Industries
Link
Checked , working
Record
csb-lyondellbasell-la-porte-fatal-chemical-release · added 2 September 2026

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