DAILY Ex - 18 OCTOBER 2026

⚡ DAILY Ex | 18 OCTOBER 2026 

Explosion Protection | Operational Ex | Global Watch 

Today's focus: When a certified installation cannot prevent a process explosion. 

A fatal reactor explosion in India, a new generation of Ex lighting, developments in equipment-assembly standards and fresh research into industrial drying lead today's edition. 

The question for Heads of Operations is simple: 

Are we controlling the process hazards, or are we relying too heavily on equipment certification? 

▶️ 1. INDIA - FIVE KILLED IN HYDROGENATION REACTOR EXPLOSION 

NEW INCIDENT | Gujarat - 16 October 2026 

Five workers were killed and at least five injured following an explosion at https://www.synzeal.com/en/ in the Saykha industrial estate, Bharuch. 

The explosion occurred late on 16 October during a hydrogenation process. Reports published on 17 October describe severe reactor damage and a subsequent release of methylene dichloride. 

Local industrial-safety authorities and police are investigating. The initiating mechanism has not been established. https://www.newindianexpress.com/amp/story/states/gujarat/2026/Oct/17/five-killed-five-injured-in-explosion-at-gujarat-chemical-unit 

Why it matters operationally 

Hydrogenation combines flammable hydrogen, elevated pressure, chemical reaction hazards and potentially significant heat generation. 

A reactor explosion could involve several mechanisms. The presence of hydrogen does not establish the cause. 

Management action: Review the independent protection layers for hydrogenation reactors: temperature and pressure monitoring, cooling availability, emergency shutdown, relief arrangements and credible runaway scenarios. 

▶️ 2. IEC 60079-46 - WHO OWNS THE MODIFIED ASSEMBLY? 

STANDARDS WATCH | International 

IEC 60079-46:2026, covering equipment assemblies, remains at Final Draft International Standard stage. Voting closes on 30 October 2026. 

The draft addresses ignition hazards introduced when individually certified Ex equipment is integrated into an assembly. 

One particularly important provision concerns modifications after installation: the draft explicitly places responsibility for subsequent changes with the end-user, subject to applicable local legislation. 

It also distinguishes equipment-assembly assessment from installation requirements. https://webstore.iec.ch/en/publication/117098 

Why it matters operationally 

A complete machine may have been assessed by its manufacturer. 

But what happens when the operator subsequently changes a motor, gearbox, instrument, seal arrangement or operating parameter? 

The original assessment does not automatically cover the modified configuration. 

▶️ 3. RESEARCH - UNDERSTANDING INDUSTRIAL DRYING CONDITIONS 

NEW RESEARCH | Published 16 October 2026 

Researchers at Hanoi University of Science and Technology published a study in Scientific Reports investigating fluidised-bed drying. 

Their computational model combines fluid dynamics and particle-scale modelling to examine heat transfer, moisture removal and temperature distribution. 

The researchers validated the model against experimental drying data for alumina particles. 

This was not an explosion-protection study. https://www.nature.com/articles/s41598-026-76307-0 

Why it matters operationally 

Drying conditions affect material behaviour. 

For combustible powders, changes in moisture, particle characteristics, temperature or operating conditions may require reassessment of ignition and explosion hazards. 

Engineering lesson: Process optimisation must remain connected to the original explosion-protection design assumptions. 

▶️ 4. HISTORICAL INCIDENT - THE DANGER OF REACTIVE CHEMISTRY 

DOCUMENTED LESSON | USA - 2007 incident, 2009 investigation 

The https://www.csb.gov/ investigated a fatal reactor explosion at T2 Laboratories in Jacksonville, Florida. 

Four workers died after a runaway chemical reaction caused the reactor to rupture. 

Investigators concluded that inadequate recognition of reactive chemical hazards and a likely cooling-system failure contributed to the disaster. https://www.csb.gov/t2-laboratories-inc-reactive-chemical-explosion/ 

Why it matters operationally 

Explosion prevention cannot focus exclusively on eliminating ignition sources. 

Some processes can generate dangerous pressure through uncontrolled reactions. 

Historical lesson: A correctly classified hazardous area does not compensate for inadequate reaction-hazard assessment. 

▶️ 5. UK - EXPLOSION-PROTECTION COMPETENCE AND FAKE CERTIFICATES 

UPCOMING EVENT | 21 October 2026 

https://www.hazardex.live/marta-test-1/greatyarmouthnorwichnorth will take place in Norwich, UK. 

The programme includes electrostatic discharge hazards, competence in Ex manufacturing, IEC 60079-0 Edition 8, counterfeit certificates and hazardous-area inspection follow-up. 

A particularly relevant presentation asks what happens after an inspection report is issued. https://www.hazardexonthenet.net/article/224134/Hazardex-in-the-Regions--Great-Yarmouth-Norwich-North-21-October-2026.aspx 

Why it matters operationally 

An inspection identifies conditions. 

Management must ensure that findings become decisions, corrective actions and verified closures. 

A completed inspection is not the same as a controlled installation. 

▶️ 6. IECEx - REPAIR COMPETENCE IS TASK-SPECIFIC 

GOOD ENGINEERING PRACTICE | Evergreen 

The https://www.iecex.com/certified-service-facility-scheme/overview/ provides independent assessment of service providers' competence and management systems. 

However, IECEx clarifies that certification of a service facility does not constitute certification of each repaired item or installation. 

Operational lesson: Verify the repairer's certified scope, technical documentation, responsible personnel and acceptance records before returning equipment to service.  

▶️ OPERATIONAL Ex USE CASE - LOSS OF COOLING DURING HYDROGENATION 

PRACTICAL SCENARIO | Not a finding about the Gujarat incident

A batch hydrogenation reactor is operating normally. 

The cooling-water supply begins to deteriorate. 

The temperature rises. 

The operator receives an alarm, but production is close to completion. 

The decision is made to continue while maintenance investigates. 

What must be established before this situation occurs? 

The plant needs defined operating limits, validated reaction-hazard information, appropriate independent protective functions and clear shutdown criteria. 

Cooling loss must be considered against credible temperature and pressure escalation. 

Head of Operations action: Assign the Process Safety Manager to review one hydrogenation or other exothermic batch process. 

Required evidence: Reaction-hazard assessment, cooling-failure scenario, protective-function verification, operator response procedure and latest proof-test records. 

Measure: Percentage of safety-critical protective functions with current, documented verification. 

▶️ TODAY'S Ex QUESTION 

“Can we demonstrate that our explosion-prevention strategy covers process failures-not only ignition sources?” 

Consider one reactor, dryer or other critical machine. 

Identify the conditions that could create a dangerous release, runaway reaction, explosive atmosphere or effective ignition source. 

Then establish which protective barriers prevent escalation and who verifies their continued effectiveness. 

⚡ DAILY Ex | CLOSING THOUGHT 

Explosion protection begins with understanding the process. 

ATEX equipment certification addresses defined equipment-related requirements. 

IECEx provides internationally recognized conformity-assessment schemes. 

Neither replaces the operator's responsibility to manage process conditions, mechanical integrity, chemical reactions and operational changes. 

The equipment may be certified. The installation may have passed inspection. 

But is the process still operating within its verified safety limits? 

That is the Operational Ex question.