ATEX training • Explosion protection • Category 1 / 2 / 3 compliance

ATEX Compliance Course

Practical training for manufacturers, importers and engineering teams who design, modify, import or integrate equipment intended for use in potentially explosive atmospheres.

The course explains Directive 2014/34/EU, ignition hazard assessment, explosion protection measures, equipment categories, documentation and ATEX marking in a practical engineering context.

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Understand ATEX Before It Becomes a Design Problem

ATEX compliance is not just a label or a certificate. It is a structured conformity process based on intended use, hazardous area classification, ignition source assessment, equipment category, temperature limits and technical documentation.

This course helps engineering and compliance teams understand how ATEX requirements influence design decisions, product documentation and conformity assessment routes before products are placed on the EU market.

1 Define ATEX relevance Determine whether the product is intended for explosive atmospheres or performs an explosion protection function.

2 Assess atmosphere Review gas, vapour, mist, dust, internal and external explosive atmosphere conditions.

3 Select category Link zones, intended use and required protection level to Category 1, 2 or 3.

4 Control ignition sources Assess hot surfaces, sparks, electrostatic discharge, friction, overheating and electrical sources.

5 Document compliance Prepare technical documentation, marking, instructions, declarations and notified body strategy.

What Participants Will Learn

The course translates ATEX requirements into practical decisions for product design, documentation and conformity assessment.

ATEX Directive Scope

Understand when ATEX applies to equipment, protective systems, components and safety, controlling or regulating devices.

Gas and Dust Atmospheres

Learn the difference between gas and dust atmospheres, internal and external explosive atmospheres, and application environments.

Equipment Groups and Categories

Understand how Group II industrial equipment is classified into Category 1, 2 or 3 according to the required protection level.

Ignition Source Assessment

Identify ignition sources such as hot surfaces, mechanical sparks, friction, electrostatic discharge and overheating.

Explosion Protection Measures

Learn how protection is achieved through ignition prevention, temperature control, grounding, material selection and monitoring.

Documentation and Marking

Understand ATEX marking, technical documentation, instructions, declarations and the role of notified bodies.

Key ATEX Concepts Covered

Participants work through the main technical decisions that determine whether a product can be placed on the market as ATEX-compliant equipment.

Concept 01

Is the Product Within ATEX Scope?

The first step is to determine whether the product is intended for use in a potentially explosive atmosphere or performs an explosion protection function.

Training focus: Assessing whether blowers, compressors, sensors, control units, protective systems or mechanical equipment fall within ATEX.

Concept 02

Internal vs. External Explosive Atmospheres

A product may be exposed externally, internally, or both. A blower may stand in Zone 2 while also conveying a flammable gas internally.

Training focus: Distinguishing internal ATEX from external ATEX and understanding why both must be assessed separately.

Concept 03

Gas vs. Dust Classification

ATEX assessment differs depending on whether the explosive atmosphere consists of gas, vapour, mist or combustible dust.

Training focus: G and D marking, dust explosion risks in material handling, and gas risks in hydrogen or process gas applications.

Concept 04

Equipment Category Selection

The required equipment category depends on the hazardous area, intended use and required level of protection.

Training focus: Linking zones, intended use and equipment category for Category 1, Category 2 and Category 3 products.

Concept 05

Ignition Hazard Assessment

ATEX compliance requires systematic identification and control of ignition sources during normal operation and relevant malfunction conditions.

Training focus: Practical ignition source assessment for rotating equipment, motors, frequency converters, bearings, seals and housings.

Concept 06

Protection Concept and Technical Measures

Explosion protection is achieved by avoiding effective ignition sources and applying suitable protective design measures.

Training focus: Temperature limitation, grounding, anti-static design, monitoring, safe materials, clearances and operating limits.

Concept 07

Conformity Assessment and Notified Bodies

The conformity route depends on equipment category, equipment type and protection concept.

Training focus: Understanding when internal production control may be sufficient and when EU-type examination or quality assurance may be required.

Concept 08

ATEX Marking and Instructions

ATEX products require correct marking, clear operating limits and instructions for safe use in explosive atmospheres.

Training focus: Reading and structuring ATEX marking, special conditions for safe use and avoiding incorrect category or temperature claims.

How to Achieve Category 1, 2 and 3 Compliance

The course explains how the required protection level changes depending on the zone, intended use and foreseeable malfunction conditions.

Category 1

Very High Level of Protection

Intended for areas where explosive atmospheres are present continuously, frequently or for long periods.

Typically associated with Zone 0 or Zone 20.
Must remain safe even with rare malfunctions.
Requires strong technical justification.
Notified body involvement is normally required.

Course outcome: Understand why Category 1 requires early design planning and robust technical evidence.

Category 2

High Level of Protection

Intended for areas where explosive atmospheres are likely to occur occasionally.

Typically associated with Zone 1 or Zone 21.
Must remain safe in normal operation and expected malfunctions.
Requires systematic ignition hazard assessment.
Notified body involvement must be checked.

Course outcome: Build a defensible Category 2 strategy for equipment such as compressors, blowers and process systems.

Category 3

Normal Level of Protection

Intended for areas where explosive atmospheres are unlikely and, if present, exist only for a short time.

Typically associated with Zone 2 or Zone 22.
Must be safe during normal operation.
Manufacturer self-assessment is often possible.
Technical documentation remains mandatory.

Course outcome: Learn how to document Category 3 properly and avoid treating it as a paperwork-free route.

Explosion Protection Measures Covered

Temperature control for hot surfaces, bearings, motors, housings and process gas

Mechanical ignition prevention for friction, impact, clearances and rotating parts

Electrostatic discharge prevention through grounding, bonding and anti-static design

Electrical ignition control for wiring, sensors, motor protection and converters

Material and component selection for seals, bearings, coatings, plastics and accessories

Monitoring and limitation of temperature, speed, pressure and maintenance intervals

Instructions for permitted zones, media, cleaning, inspection and special conditions

Typical Products and Applications

The course uses practical examples from industrial equipment and process applications where ATEX decisions affect design, documentation and market access.

Blowers and Compressors

Side channel blowers, turbo compressors, gas treatment systems, hydrogen applications and process gas equipment.

Dust-Prone Applications

Plastic granulate conveying, material handling, combustible dust environments and dust explosion risk applications.

Mechanical Equipment

Non-electrical equipment with mechanical ignition sources, bearings, rotating parts, seals and housings.

Protective Systems

Spark separation, explosion protection devices, monitoring systems and safety-related protective functions.

OEM Modules

ATEX variants of existing machinery, OEM modules and products integrated into larger systems.

Imported Equipment

Imported ATEX equipment, modified CE-marked products and documentation review for EU market placement.

Course Materials and Deliverables

ATEX Directive overview

Zone, category and EPL explanation

Ignition source assessment checklist

Category 1 / 2 / 3 compliance comparison

ATEX marking examples

Documentation and declaration checklist

Product modification and delta-assessment guidance

Case studies for blowers, compressors, hydrogen and dust applications

Questions This Course Helps Answer

Is my product ATEX-relevant?

Learn how to determine whether ATEX applies based on intended use, explosive atmosphere, ignition sources and product function.

Which category do we need?

Understand the relationship between hazardous zones, equipment category and required protection level.

Is a notified body required?

Learn how category, equipment type and conformity procedure influence whether third-party involvement is necessary.

Is an ATEX motor enough?

Understand why the complete product must be assessed and why component certification alone is not sufficient.

Why Choose This ATEX Course?

ATEX questions often look simple, but small product details can change the required category, conformity route, documentation and notified body involvement.

This training combines regulatory knowledge with practical engineering examples, helping your team make better design, documentation and compliance decisions from the beginning.

Prepare Your Team for ATEX Compliance

Whether you design new ATEX products, modify existing equipment, import ATEX-marked products or develop Category 1, 2 or 3 variants, this course provides a practical framework for compliant and defensible decision-making.

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