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Clean Hydrogen Partnership

Hydrogen fire in the chlorine unit of a chemical plant

Event

Event ID
843
Quality
Description

A fire occurred on three cells of the chlorine manufacturing unit. A leak of hydrogen in the electrolysis room was at the origin of the fire; the ignition of the H2 cloud caused a noticeable noise outside the site.

The emergency plan was initiated; the gas alert resulted in the confinement of personnel located in the area of the site concerned.
The use of nitrogen to make inert the atmosphere and the intervention of the firefighters of the site allowed the extinction of the fire of the plastic lids of the three cells around 14:30.
No leakage of chlorine was noted and the operator issued a press release.
Three people were slightly injured including one who was transported to the hospital for light electrification.

Event Initiating system
Classification of the physical effects
Hydrogen Release and Ignition
Nature of the consequences
fire
Macro-region
Europe
Country
France
Date
Component involved
electrolytic cell
Failure mode
rupture & ignition
Initiating cause
unknown
Root causes
Unknown
Date entry in HIAD
01/01/2020

Facility

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

electrolyser cells, electrolysis building

Process temperature range [C]
Above ambient temperature (50°C to 100°C)
Location type
Confined
Location
industrial area
Operational condition

Emergency & Consequences

Number of fatalities
0
Number of injured persons
3
Post-event summary

Three people were slightly injured including one who was transported to the hospital for light electrification.

No leakage of chlorine was noted and the operator issued a press release.

Emergency action

13:20 Fire is noticed due to the noise from the ignition of hydrogen
The emergency plan was initiated; the gas alert resulted in the confinement of personnel located in the area of the site concerned.
14:30 The fire around the plastic lids of the three chlorine cells was extinguished by means of nitrogen and the intervention of the firefighters of the site
No leakage of chlorine was noted and the operator issued a press release.

In-depth data

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

References

Sources categories
ARIA
Reference & weblink

ARIA data base
event no. 35032