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Clean Hydrogen Partnership

Explosion during brazing

Event

Event ID
1069
Quality
Description

The incident occurred at company producing specialised products for aerospace and aero power applications. An employee was operating an induction brazing machine under hydrogen atmosphere when an explosion occurred.

Event Initiating system
Classification of the physical effects
Hydrogen Release and Ignition
Nature of the consequences
Macro-region
North America
Country
United States
Date
Component involved
reactor / oven / furnace / test chamber
Failure mode
rupture
Initiating cause
unknown
Root causes
Date entry in HIAD
01/07/2024

Facility

Application
Other
Sub-application
aerospace/aviation components production
Hydrogen supply chain stage
All components affected

metals brazing

Process temperature range [C]
Very high temperature (500°C to 1000°C)
Process pressure range [MPa]
ambient pressure (around 0.1 MPa)
Location type
Unknown
Location
airport or airborne
Operational condition
Description of the facility/unit/process/substances

DESCRIPTION OF THE PROCESS

Hydrogen is used to avoid surface oxidation when brazing metallic parts at high temperature

Emergency & Consequences

Number of fatalities
0
Number of injured persons
1
Post-event summary

The employee was hospitalized for treatment of burns.

In-depth data

Release type
gas
Involved substances (% vol)
H2 100%
Probable IGNITION SOURCE
Explosion type

References

Sources categories
OHSA
Reference & weblink

OHSA (Occupational Safety and Health Administration) news of 16 Feb 2022

https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=143791…

(accessed July 2023)