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Clean Hydrogen Partnership

Explosion at a hydrogenation unit

Event

Event ID
744
Quality
Description

Employee #1, a maintenance worker, was killed by a hydrogen blast while working inside a batch hydrogenation unit.

Event Initiating system
Classification of the physical effects
Hydrogen Release and Ignition
Nature of the consequences
fire
Macro-region
North America
Country
United States
Date
Component involved
unknown
Failure mode
unknown
Initiating cause
unknown
Root causes
Unknown
Date entry in HIAD
01/01/2020

Facility

Application
Chemical industry
Sub-application
hydrogen production unit
Hydrogen supply chain stage
All components affected

hydrogenator

Process temperature range [C]
ambient temperature (-50°C to +50°C)
Location type
Unknown
Location
industrial area
Operational condition
Pre-event occurrences

Maintenance was ongoing inside a hydrogenation unit.

Description of the facility/unit/process/substances

DESCRIPTION OF THE PROCESS
From Wikipedia: "Hydrogenation is a chemical reaction between molecular hydrogen and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum."
https://en.wikipedia.org/wiki/Hydrogenation

Emergency & Consequences

Number of fatalities
1
Number of injured persons
0

In-depth data

Release type
gas
Involved substances (% vol)
H2 100%
Release temperature [°C]
25
Probable IGNITION SOURCE

References

Sources categories
OHSA
Reference & weblink

OSHA Accident Summary Nr: 763086 - Employee Killed By Explosion Inside Batch Hydrogenator
https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=763086
(accessed May 2023)