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Author: Veress Árpád · Explosion-protection expertDAILY Ex - 4 NOVEMBER 2026
TODAY'S FOCUS: An explosion-protection system must stop propagation-not simply survive the initial explosion. A serious factory fire in Taiwan, new explosion-isolation technology, regulatory lessons from Hungary and developments in European process safety lead today's edition. For Heads of Operations: The most dangerous consequence of an equipment failure may occur outside the equipment where the incident started.
⚡ DAILY Ex | 4 NOVEMBER 2026
Explosion Protection | Operational Ex | Global Watch
TODAY'S FOCUS: An explosion-protection system must stop propagation-not simply survive the initial explosion.
A serious factory fire in Taiwan, new explosion-isolation technology, regulatory lessons from Hungary and developments in European process safety lead today's edition.
For Heads of Operations: The most dangerous consequence of an equipment failure may occur outside the equipment where the incident started.
🔴 1. TAIWAN | Five injured, two missing after factory fire
BREAKING INCIDENT - 4 November 2026
A major fire broke out at a factory operated by Panasonic Industrial Devices Materials Taiwan in Hsinchu County.
According to Reuters, five people were injured and transported to hospital. Two people remained missing in the initial report.
Local authorities reported that the fire had been extinguished shortly before noon.
The facility supplies materials used in printed circuit board manufacturing.
Important: The initiating cause and any involvement of flammable vapours or combustible dust have not been established in the verified report.
Why it matters operationally: Manufacturing processes involving chemicals and thermal equipment require effective containment, isolation, emergency evacuation and fire-response arrangements.
Management action: Verify that emergency procedures account for personnel working in enclosed production areas and provide reliable accountability during evacuation.
⚖️ 2. HUNGARY | Fatal petrochemical explosion leads to regulatory enforcement
RECENT ENFORCEMENT DEVELOPMENT - October 2026
Hungarian authorities fined MOL Petrochemicals HUF 38 million following an investigation into a fatal explosion at its Tiszaújváros facility.
The explosion occurred during the restart of the Olefin-1 unit after maintenance.
One worker died, four were seriously injured and seven sustained minor injuries.
Investigators identified inadequate arrangements for detecting dangerous conditions and initiating safe shutdowns.
The authorities also required improvements to safety-system management and equipment maintenance.
Why it matters operationally: Restart after maintenance is a critical transition between equipment condition, process control and operating responsibility.
Management action: Verify that all safety-critical detection, alarm, interlock and shutdown functions have been tested before authorising restart.
https://apnews.com/article/9ce81ee171dbc8735544baa6e9ae9b44
📘 3. ATEX / IECEx | Explosion isolation is a system-level responsibility
STANDARDS AND COMPLIANCE PRACTICE
Explosion isolation must be evaluated as part of the complete protected installation.
Relevant European standards include EN 15089 for explosion-isolation systems and EN 16447 for explosion-isolation flap valves.
ATEX Directive 2014/34/EU addresses qualifying equipment and protective systems intended for use in potentially explosive atmospheres.
Workplace Directive 1999/92/EC requires employers to assess and manage explosion risks.
Why it matters operationally: A certified isolation valve does not establish that the complete installation is adequately protected.
Its effectiveness depends on installation geometry, explosion characteristics, operating conditions and maintenance.
Management action: Include explosion-isolation devices in the site's explosion-protection documentation, inspection programme and Management of Change process.
📘 4. USA | Maintenance method contributed to fatal coke-works explosion
HISTORICAL INCIDENT LEARNING - August 2025 incident; 2026 investigation
The U.S. Chemical Safety and Hazard Investigation Board investigated a fatal explosion at U.S. Steel's Clairton Coke Works.
Two workers died and 11 were injured.
Investigators found that pressurised water used during valve-cleaning work contributed to the rupture of gas-containing equipment.
Flammable gas escaped and subsequently ignited.
The investigation identified weaknesses in maintenance procedures, process-safety management and facility siting. https://www.axios.com/local/pittsburgh/2026/08/12/clairton-explosion-cause-pittsburgh
Why it matters operationally: Maintenance techniques can introduce forces and operating conditions that equipment was not designed to withstand.
Historical lesson: A maintenance activity must be assessed for its potential to create a loss of containment—not simply for the hazards normally associated with the equipment.
📅 5. FRANCE / UK | Industrial risk and process safety events
CURRENT AND UPCOMING EVENTS
Expoprotection 2026 is taking place in Paris from 3-5 November.
The programme addresses workplace safety, industrial risk prevention and emergency preparedness.
The Hazards 36 conference takes place in Manchester on 17–19 November.
Its programme focuses on major-hazard management, process-safety practice and lessons from industrial operations. https://www.icheme.org/training-events/hazards-process-safety-conference/
Why it matters operationally: Effective explosion protection requires collaboration between process engineering, mechanical integrity, electrical engineering, maintenance and operations.
https://www.expoprotection.com/fr-fr/programme.html · https://www.icheme.org/training-events/hazards-process-safety-conference/
▶️ OPERATIONAL Ex USE CASE
The dust collector is protected. What about the connected production line?
PRACTICAL | Illustrative scenario
A food-processing facility operates a central dust collector connected to several powder-handling machines.
The collector has explosion venting.
The main inlet duct includes a certified explosion-isolation flap valve.
Production introduces an additional processing machine.
To accommodate the new connection, maintenance modifies the ductwork and relocates the isolation valve.
The original valve remains installed and its certification remains valid.
But does the complete explosion-isolation arrangement still provide adequate protection?
Not necessarily.
The modification may change duct length, bends, airflow, pressure development and the distance between the potential explosion source and the isolation device.
The original certification cannot automatically be extended to the revised installation.
Required decision: Engineering must verify the complete isolation arrangement against the manufacturer's approved installation conditions and the actual dust-explosion characteristics.
Owner: Head of Engineering, supported by Operations, Maintenance and the Ex Responsible Person.
Required evidence: Updated process drawings, dust-explosion data, isolation-system design verification, revised explosion-protection documentation, installation inspection and return-to-service authorisation.
STOP criterion: Do not restart the modified system until the required explosion-isolation performance has been verified.
Measure: 100% of modifications to explosion-protected ductwork reviewed before operation.
▶️ TODAY'S Ex QUESTION
“Can an explosion originating in one item of equipment propagate into another part of our installation?”
Consider dust collectors, conveyors, filters, silos, dryers and interconnected vessels.
A protected vessel is not necessarily a protected process.
⚡ DAILY Ex | CLOSING THOUGHT
Today's developments reinforce a critical principle.
Explosion protection must address the complete process-not only the equipment where an explosion might begin.
An explosion vent may reduce pressure inside a vessel.
An isolation system may prevent propagation into connected equipment.
A shutdown system may prevent an abnormal condition from developing.
But every protective measure must remain suitable for the actual installation and operating conditions.
For Heads of Operations, the essential question is whether the protective system installed today still matches the process operating today.
A certified protective device is only effective when the complete protection arrangement is correctly engineered, maintained and verified.
That is Operational Ex.