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Author: Veress Árpád · Explosion-protection expertDAILY Ex - 26 OCTOBER 2026
Today's focus: Emergency readiness, hidden ignition mechanisms and the equipment we trust to keep hazardous installations safe. A major industrial fire in Oregon, new hydrogen research, an important NIOSH investigation and developments in Ex equipment and competence. Today's message for Heads of Operations: Explosion protection must work during abnormal conditions-not only during normal production.
⚡ DAILY Ex | 26 OCTOBER 2026
Explosion Protection | Operational Ex | Global Watch
Today's focus: Emergency readiness, hidden ignition mechanisms and the equipment we trust to keep hazardous installations safe.
A major industrial fire in Oregon, new hydrogen research, an important NIOSH investigation and developments in Ex equipment and competence.
Today's message for Heads of Operations: Explosion protection must work during abnormal conditions-not only during normal production.
🔴 1. USA - MAJOR FIRE AT SEAFOOD PROCESSING PLANT
CURRENT INCIDENT | Newport, Oregon - 25 October 2026
A major fire broke out at a https://www.pacificseafood.com/ facility in Newport, Oregon.
The fire prompted evacuation warnings extending initially to approximately one mile because of concerns involving ammonia refrigeration equipment.
Firefighters faced significant smoke and structural hazards.
The Oregon State Fire Marshal reported that the ammonia tank had been located and did not appear to be punctured or leaking. Hazardous-materials teams continued monitoring.
No injuries were initially reported. The cause remained under investigation.
Important: This is a confirmed industrial fire, not a confirmed explosive-atmosphere explosion.
Why it matters operationally
Industrial emergencies can involve several interacting hazards: fire, structural damage, toxic substances, pressurised systems and potential ignition sources.
Management action: Check whether emergency responders have accurate information about hazardous inventories, isolation points and equipment that must not be disturbed.
https://www.opb.org/article/2026/10/25/newport-pacific-seafoods-fire/
📘 2. IEC 60079-0:2026 - WHEN STANDARD ATMOSPHERIC CONDITIONS DO NOT APPLY
STANDARDS WATCH | Technical application of the June 2026 edition
The eighth edition of IEC 60079-0 establishes general requirements for Ex equipment.
Its standard atmospheric conditions include:
* Temperature: −20°C to +60°C
* Pressure: 80–110 kPa
* Normal atmospheric oxygen content
Equipment operating outside these conditions may require additional assessment or testing.
This is particularly important for protection concepts affected by flame quenching or ignition energy.
Why it matters operationally
Inerting, oxygen enrichment, pressure changes and unusual operating environments can challenge assumptions underlying equipment certification.
Engineering lesson: Verify the certified equipment's permitted conditions against the actual installation—not simply its Zone and gas group.
https://webstore.iec.ch/en/publication/71519
⚖️ 3. EU ATEX - SAFETY EQUIPMENT OUTSIDE THE HAZARDOUS AREA
LEGAL REQUIREMENTS
Directive 2014/34/EU does not concern only equipment physically installed inside hazardous areas.
Its scope also includes certain safety, controlling and regulating devices located outside potentially explosive atmospheres when they are required for, or contribute to, explosion safety.
Directive 1999/92/EC separately establishes workplace responsibilities, including suitable training, instructions and permits where required.
Why it matters operationally
A control system installed in a non-hazardous electrical room may still perform an essential explosion-protection function.
Management action: Identify which gas detection, ventilation, interlocking and shutdown functions are essential to explosion safety. Determine the applicable conformity and functional-safety requirements.
https://eur-lex.europa.eu/eli/dir/2014/34/2026-05-30/gle · https://eur-lex.europa.eu/eli/dir/1999/92/oj
🔬 4. HYDROGEN - IGNITION WITHOUT AN EXTERNAL SPARK
RESEARCH | October 2026
A study published in Combustion and Flame, involving researchers from China and the University of Surrey, investigated flame formation following high-pressure hydrogen releases.
The researchers examined how spontaneous ignition within a release pathway can develop into an external jet flame.
Experimental work investigated how internal flow conditions influence flame formation and extinguishment.
Why it matters operationally
Hydrogen-release assessments cannot always assume that ignition requires a separate external electrical or mechanical source.
Release pressure, geometry and flow conditions may be important.
Engineering lesson: Consider credible hydrogen release and ignition mechanisms when designing venting, isolation and emergency systems.
The research does not establish a universally applicable industrial suppression method.
📘 5. USA - A SILO FIRE THAT KILLED TWO FIREFIGHTERS
DOCUMENTED INCIDENT LEARNING | May 2026; NIOSH report August 2026
A lumber-mill silo explosion in Maine killed two volunteer firefighters and injured other emergency responders.
The investigation by National Institute for Occupational Safety and Health found that personnel had not recognised the silo's oxygen-limiting design or the combustible-dust hazard.
Firefighters directed water into the silo before the explosion.
NIOSH emphasized the importance of identifying silo construction and contents, selecting appropriate firefighting tactics and developing pre-incident plans.
Its guidance specifically warns against directing water or foam into oxygen-limiting silos.
Why it matters operationally
Emergency response must be designed around the actual equipment.
A firefighting method appropriate for one installation can be dangerous for another.
Management action: Verify that emergency plans identify oxygen-limiting silos and communicate the required precautions to responding fire services.
https://www.cdc.gov/niosh/firefighters/programs/pdfs/f202607.pdf
📅 6. UK - ELECTROSTATICS, COUNTERFEIT Ex EQUIPMENT AND COMPETENCE
UPCOMING EVENT | Swansea - 25 November 2026
HazardEx in the Regions has announced a Swansea program addressing hazardous-area safety.
Topics include electrostatic discharge, counterfeit Ex certificates and equipment, competence in Ex manufacturing, and UK regulatory developments.
The event is scheduled for 25 November 2026.
Why it matters operationally
Competence and certificate authenticity remain practical procurement, installation and maintenance concerns.
Management action: Include certificate verification and task-specific competence checks in supplier and contractor acceptance procedures.
▶️ OPERATIONAL Ex USE CASE
The gas detector works. But does its shutdown function?
PRACTICAL | Illustrative scenario
A chemical plant operates a solvent-transfer system.
Gas detectors monitor the transfer area.
When a defined gas concentration is reached, the control system must stop transfer pumps and initiate protective actions.
During routine maintenance, an input module in the control cabinet is replaced.
The cabinet is outside the hazardous area.
The replacement is recorded as ordinary electrical maintenance.
The detector is tested. Its display works.
Production restarts.
But was the complete safety function verified?
A correctly functioning detector does not demonstrate that the signal reaches the controller, that the correct logic executes or that the required equipment shuts down.
The required verification chain:
Detector → signal transmission → controller logic → final element → actual protective action.
The assessment must also consider whether the replacement affects the approved configuration or relevant safety-function requirements.
Owner: Instrumentation and Control Manager, supported by the Ex Responsible Person.
Required evidence: Approved replacement, configuration verification, applicable proof or functional testing, and return-to-service authorization.
Measure: 100% of changes affecting explosion-safety functions assessed and verified before return to operation.
▶️ TODAY'S Ex QUESTION
“Which explosion-protection measures in our plant depend on equipment located outside the hazardous area?”
Think about ventilation controls, gas-detection panels, safety PLCs, emergency shutdown systems and explosion-protection controllers.
Can Operations demonstrate that these functions remain effective after maintenance or modification?
⚡ DAILY Ex | CLOSING THOUGHT
Today's incidents and technical developments highlight an important distinction.
Certified equipment provides a defined level of protection.
An engineered system connects the protective measures.
Operational Ex ensures that the system continues to work.
The Head of Operations must know not only what protection was originally designed, but also what has changed, what remains available and what evidence supports continued operation.
Explosion protection is not complete when the equipment is installed. It must be maintained, verified and demonstrated throughout the operational lifecycle.