Investigation Report

Loy Lange Box Company Pressure Vessel Explosion

CSBU.S. Chemical Safety and Hazard Investigation Board

Loy Lange Box Company Pressure Vessel Explosion

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

Summary

Investigation of a fatal steam-system pressure vessel explosion in St. Louis examines oxygen corrosion, incomplete repairs, water treatment and inspection failures. Metallurgical examination and thickness measurements underpin the findings. The report analyses regulatory oversight and process safety management, while noting that the pressure at rupture could not be determined.

Topics

About This Record
Publisher
U.S. Chemical Safety and Hazard Investigation Board
Type
Investigation Report
Date
29 July 2022
Topic
Corrosion, Explosion, Pressure Systems, Process Safety, Regulation and Legislation
Activity
Inspection and Maintenance, Pressure Testing
Equipment
Pressure Vessel, Process Pipework and Pipelines, Valve
Control
Independent Audit and Verification, Non-Destructive Testing, Operating and Work Procedures, Pressure Relief
Setting
Onshore Facility
Link
Checked , working
Record
csb-loy-lange-box-company-pressure-vessel-explosion · added 2 September 2026

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