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⚡ exacademy.co.uk — Hazardous Area Training

Train for
Ex-Rated
Competence

Professional online preparation for hazardous area electrical work. CompEx-style practice covering Ex01–Ex04: installation, inspection, intrinsic safety, and maintenance in explosive atmospheres.

⚠ Independent training preparation only — not an official CompEx awarding body.
This platform provides CompEx-style learning support and mock assessment practice.

// learner dashboard — active session
module Ex d Flameproof
progress 72% complete
mock exam score 84% — Pass
questions attempted 347 / 600
zone Zone 1 · IIB · T4
next session Ex i Intrinsic Safety

Overall course: 72% → target 100% before assessment

600+
Practice Questions
14
Training Modules
Ex01–04
Units Covered
IEC
60079 Standards Based
Course Modules

Everything from Zone Classification
to Inspection to Intrinsic Safety

Fourteen structured modules covering all CompEx-style preparation topics. Unlock more with a subscription.

Interactive Demo

Try the Mock Assessment Engine

A sample of the question style available in the platform. Subscribers get access to the full mock exam — 60 minutes, 60 questions, flag-and-review functionality, and a detailed results breakdown — designed to replicate the format and pressure of the real CompEx-style written assessment.

General Principles
Q 1 / 5 Score: 0
Inspection Simulator

Real Inspection. Real Decisions.
Real Consequences.

14 fully interactive inspection simulations covering Ex d, Ex e, Ex i, Ex p, Ex t and more — across Zone 0, 1, 2 and Zone 21. Work through Visual, Close and Detailed inspection phases. Identify faults, classify severity (Cat X, A, B), and receive expert mentor feedback on every answer.

Briefing
Visual Inspection
Close Inspection
Detailed Inspection
Report
Work Order
INSP NOINS-2026-0441
TAGPM-101-A
ZONEZone 1
GAS GROUPIIB
T-CLASST4
Questions
1
2
3
4
5
Visual Inspection Q4 of 8 — Visual ⏱ 08:42
Q4 of 20 Multiple Choice
White paint is visible on approximately 30% of the outer face of the terminal box body — not on the flamepath face. What is the correct classification?
ACategory X — all paint on Ex d equipment is prohibited
BCategory B — paint on the outer body is not on the flamepath. Record for removal at next maintenance.
CNo deficiency — painting of Ex d equipment is standard practice
DCategory A — paint on any part of the terminal box must be removed urgently
👷
Senior Inspector ✓ Correct
Paint on the outer body of an Ex d enclosure is permitted — it provides corrosion protection. The critical prohibition is paint on the flamepath faces. Aluminium paint is the exception — prohibited everywhere regardless of location due to thermite risk.
🎓
14 Inspection Scenarios
Ex d, Ex e, Ex i, Ex p, Ex t — across Zone 0, 1, 2 and Zone 21
📋
Visual · Close · Detailed
All three inspection grades per scenario — 20 questions each, 1.5 CPD hours
🔄
Regularly Updated
New inspection scenarios added regularly for subscribers — always fresh content

Try Simulation 01 — Ex d Motor →

Equipment Selection Simulator

Choose the Right Equipment.
Every Time. Every Zone.

Interactive scenarios that challenge you to select certified Ex equipment based on zone, gas group, T-class, and EPL. Get instant feedback on your choices — and understand exactly why a selection passes or fails.

Equipment Selection Simulator
3 scenarios available
SCENARIO 01
Ex d Junction Box
Zone 1 · IIB · T4 · EPL Gb
Wellhead Area B · NS Bravo
▶ Start →
SCENARIO 02
Ex e Fluorescent Luminaire
Zone 1 · IIA · T3 · EPL Gb
Process Deck C · NS Bravo
🔒 Subscription required
SCENARIO 03
Ex de LCS — IIC Hydrogen
Zone 1 · IIC · T4 · EPL Gb
Hydrogen Compressor Deck
🔒 Subscription required
Scenario 01 · Installation Brief
Area Classification
ZONEZone 1
GAS GROUPIIB
T-CLASST4 (135°C)
EPLGb
Cable Schedule
Entry 1 & 2 — M25
4-core SWA 16mm² · OD 21.4mm
Entry 3 — M20
2-core SWA 10mm² · OD 16.8mm
Entry 4 — M25
Unused — stopping plug required
Q2 of 10 Multiple Choice
Entries 1 and 2 carry 4-core SWA XLPE 16mm² into an Ex d junction box via M25 threaded entries. What type of gland is required?
CEx d IIB certified barrier gland M25 — inner body seals the armour wire spaces against gas propagation
AEx e non-barrier gland M25
DEx d IIB non-barrier gland M25
🎓
14 Inspection Scenarios
Ex d, Ex e, Ex i, Ex p, Ex t — across Zone 0, 1, 2 and Zone 21
📋
Visual · Close · Detailed
All three inspection grades per scenario — 20 questions each, 1.5 CPD hours
🔄
Regularly Updated
New inspection scenarios added regularly for subscribers — always fresh content

Try Simulation 01 — Ex d Motor →

Equipment Selection Simulator

Choose the Right Equipment.
Every Time. Every Zone.

Interactive scenarios that challenge you to select certified Ex equipment based on zone, gas group, T-class, and EPL. Get instant feedback on your choices — and understand exactly why a selection passes or fails.

Equipment Selection Simulator
3 scenarios available
SCENARIO 01
Ex d Junction Box
Zone 1 · IIB · T4 · EPL Gb
Wellhead Area B · NS Bravo
▶ Start →
SCENARIO 02
Ex e Fluorescent Luminaire
Zone 1 · IIA · T3 · EPL Gb
Process Deck C · NS Bravo
🔒 Subscription required
SCENARIO 03
Ex de LCS — IIC Hydrogen
Zone 1 · IIC · T4 · EPL Gb
Hydrogen Compressor Deck
🔒 Subscription required
Scenario 01 · Installation Brief
Area Classification
ZONEZone 1
GAS GROUPIIB
T-CLASST4 (135°C)
EPLGb
Cable Schedule
Entry 1 & 2 — M25
4-core SWA 16mm² · OD 21.4mm
Entry 3 — M20
2-core SWA 10mm² · OD 16.8mm
Entry 4 — M25
Unused — stopping plug required
Q2 of 10 Multiple Choice
Entries 1 and 2 carry 4-core SWA XLPE 16mm² into an Ex d junction box via M25 threaded entries. What type of gland is required?
CEx d IIB certified barrier gland M25 — inner body seals the armour wire spaces against gas propagation
AEx e non-barrier gland M25
DEx d IIB non-barrier gland M25
🎓
14 Inspection Scenarios
Ex d, Ex e, Ex i, Ex p, Ex t — across Zone 0, 1, 2 and Zone 21
📋
Visual · Close · Detailed
All three inspection grades per scenario — 20 questions each, 1.5 CPD hours
🔄
Regularly Updated
New inspection scenarios added regularly for subscribers — always fresh content

Try Simulation 01 — Ex d Motor →

Equipment Selection Simulator

Choose the Right Equipment.
Every Time. Every Zone.

Interactive scenarios that challenge you to select certified Ex equipment based on zone, gas group, T-class, and EPL. Get instant feedback on your choices — and understand exactly why a selection passes or fails.

Active Scenario
Hydrogen Compressor Station — Select a suitable junction box and cable gland
Zone 1 IIC (Hydrogen) T4 EPL Gb
✗ INCORRECT
OPTION A
Stahl 8146 Junction Box
Ex e IIB T5 Gb · IP66
Gas group IIB does not cover IIC atmosphere. Hydrogen requires IIC rated equipment.
✓ CORRECT
OPTION B
Pepperl+Fuchs GUB Ex9
Ex e IIC T6 Gb · IP66
IIC covers hydrogen. T6 exceeds T4 requirement. IP66 suitable for outdoor Zone 1.
✗ INCORRECT
OPTION C
R.Stahl 9221 J-Box
Ex ec IIC T4 Gc · IP55
EPL Gc is Zone 2 only. Cannot be used in Zone 1. Gc does not cover Gb applications.
Option B is correct. For hydrogen (IIC) in Zone 1 (Gb), you need: gas group IIC ✓, EPL Gb or higher ✓, T-class meeting T4 requirement ✓. Remember: gas group hierarchy is IIA ⊂ IIB ⊂ IIC — only IIC covers hydrogen atmospheres.
Zone & Gas Group Logic
Practise matching EPL, gas group, T-class and IP rating to the area classification
📊
Instant Expert Feedback
Understand exactly why each selection is right or wrong — not just a score
🔄
New Scenarios Added Regularly
Subscribers get fresh selection scenarios covering new equipment types and area classifications

Try Equipment Selection →

Platform Features

Built for Serious Hazardous Area
Professionals

Everything you need to build, strengthen, and maintain your hazardous area knowledge. Whether you're preparing for a CompEx-style assessment, refreshing your skills, or staying up to date throughout your career, our platform keeps you confident, competent, and ready.

📚

14 Technical Modules

From gas characteristics and zone classification through Ex d, Ex e, Ex i, Ex n, Ex p, wiring systems, and IEC 60079-17 inspection — the complete syllabus in structured, learner-friendly units. New modules added regularly to keep subscribers current.

🎯

600-Question Bank

Subscribers get access to a full 60-minute timed mock exam with randomised question selection, the ability to flag questions for review, and a detailed results breakdown by topic. Mirrors the format and pressure of the real CompEx-style written assessment.

🔍

Inspection Simulator

14 fully interactive inspection simulations covering Ex d, Ex e, Ex i, Ex p, Ex t, Ex ia and more — across Zone 0, 1, 2 and Zone 21. Each scenario has 20 questions across Visual, Close and Detailed inspection phases with senior inspector mentor feedback on every answer. New scenarios added regularly.

⚙️

Equipment Selector

Scenario-based equipment selection challenges that test your ability to match zone, gas group, T-class, EPL and IP requirements to certified Ex equipment. Understand exactly why a selection passes or fails — not just a score. New scenarios added regularly for subscribers.

📊

Progress Tracking

Per-module scores, exam history, weak-area identification, and learning streaks. Progress saved to your account across sessions — desktop and mobile.

👥

Team & Company Plans

Manage multiple learners under one account. Admin dashboard with team progress reports, licence assignment, and renewal tracking. Perfect for training departments and contractors.

Learner Dashboard

Track Your Progress Across All Units

72%
Overall Progress
84%
Last Mock Score
347
Questions Done
Subscription Plans

Invest in Your CompEx Preparation

Flexible plans for individual learners, teams, and training departments.

Starter
Demo
£0
forever — no card required
  • Module 1 only
  • Mock exam — 20 questions (fixed)
  • 1 inspection simulation (Sim 01 — Ex d Motor)
  • 1 equipment selection scenario
  • Full 14-module library
  • Full mock exam engine
  • Progress tracking
  • Certificate of completion
Create Free Account
Best Value
Annual Learner
£99.99
per year — save ~£140 vs monthly
  • Everything in Monthly
  • 12 months full access
  • Priority email support
  • Download study notes (PDF)
  • Early access to new modules
  • Certificate of completion
  • Team management tools
Go Annual →
Business
Team / Company
POA
Contact us — 10+ seats
  • Everything in Annual
  • Team admin dashboard
  • Bulk learner licence management
  • Progress reports by team
  • Custom branding option
Preview Admin Dashboard → Contact Sales Team →
⚠️
Important — Independent Training Support Only: EX Academy is an independent training preparation platform and is not affiliated with, endorsed by, or operated as an official CompEx awarding body. Training completion on this platform does not confer a CompEx Certificate of Core Competence. Certificates issued by EX Academy are confirmation of training preparation completion only and should not be presented as official CompEx certification. Real competency certification requires attendance at an approved assessment centre and successful completion of the official CompEx theory and practical assessments. Possession of a certificate does not certify full competence — competence is only gained through supervised practical experience in the field.
Completion Certificate

Track Your Training Milestones

Subscribers who complete all modules and pass the mock assessments receive a training preparation certificate — clearly labelled as preparation only, not official CompEx certification.

TRAINING PREPARATION ONLY
EX Academy
exacademy.co.uk — Hazardous Area Electrical Training

This is to confirm that

J. Smith

has successfully completed all training preparation modules for

CompEx-Style Ex01–Ex04 Preparation

covering hazardous area installation, inspection, intrinsic safety,
and practical assessment preparation.

Ex01–Ex02
🔬
Ex03–Ex04
📋
Mock: 88%
TRAINING PREPARATION CERTIFICATE ONLY — This certificate confirms completion of the EX Academy online training preparation course and is not an official CompEx Certificate of Core Competence. EX Academy is not an official CompEx awarding body.