Investigation Report

AB Specialty Silicones, LLC

CSBU.S. Chemical Safety and Hazard Investigation Board

AB Specialty Silicones, LLC

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

Summary

Investigation of a fatal hydrogen explosion during silicone-emulsion batch manufacture in Waukegan, Illinois. Reactivity experiments linked unintended potassium hydroxide addition to hydrogen generation. The report examines similar chemical drums, atmospheric batch tanks, ventilation, failed detector trials, evacuation preparedness and procedural checks, alongside process safety culture and regulatory gaps for reactive chemicals.

Topics

About This Record
Publisher
U.S. Chemical Safety and Hazard Investigation Board
Type
Investigation Report
Date
24 September 2021
Topic
Explosion, Hydrogen Safety, Leadership and Safety Culture, Process Safety, Regulation and Legislation
Equipment
Gas Detector
Control
Evacuation, Escape and Rescue, Operating and Work Procedures, Risk Assessment, Ventilation
Sector
Downstream and Process Industries
Setting
Onshore Facility
Link
Checked , working
Record
csb-ab-specialty-silicones-llc · added 2 September 2026

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