Readiness Snapshot
A short free diagnostic mapping your current knowledge across Ex01–Ex04 topic areas — tells you exactly where to focus first.
UK Hazardous Area Competence Preparation
Prepare for
Ex01–Ex04
with confidence.
Structured Gas & Vapours competence preparation for UK engineers and technicians. Built on 40+ years of hazardous area engineering authority — powered by POSISYS™ AI.
40+
Years Experience
Ex01–04
Full Coverage
PWA
Works Offline
About the Platform
Who We Are
Built by engineers,
for engineers.
The Engineering University is an independent UK platform providing structured competence preparation for engineers and technicians working in or around hazardous area Gas & Vapours environments.
It exists because the five-year recertification cycle is real, the pressure on a structured five-day course is real, and the gap between knowing your job and demonstrating it under assessment conditions is real.
This platform was created to close that gap — calmly, systematically, and with technical depth that only comes from 40+ years inside safety-critical industries.
Engineering Authority
Senior Instrument Engineer and Technical Authority — 40+ years in nuclear, oil & gas, offshore, and process industries
Deep expertise in COMAH, DSEAR 2002, ATEX, and IEC 60079 series standards across major industrial sites
Career from ICI Instrument Artificer apprenticeship to Technical Authority — real site experience, not textbook theory
Content written, reviewed, and validated by a practising Technical Authority — not a content writer
Operated by Saving Energy Consultants Ltd — UK registered, owner-operated, no external investors
6,000+ LinkedIn network of engineering professionals across safety-critical sectors
POSISYS™ AI Engine
The AI at the Heart of TEU
POSISYS™ — Your
Engineering Preparation
Companion.
POSISYS™ is a specialist AI built specifically for hazardous area competence preparation. Not a general chatbot. Not a generic quiz tool. A purpose-built engine that adapts to your weaknesses, builds your confidence, and gets you ready for the most high-stakes five days of your professional year.
Daily adaptive questions — 5, 15, or 30 per session. Fits around your schedule, not the other way around.
Spaced repetition — Wrong answers resurface intelligently until the knowledge genuinely sticks.
PEACH recall system — Protection concept · Equipment group · Atmosphere classification · Certification marking · Hazard considerations. A structured framework for answering under pressure.
Weakness tagging — Identifies exactly where you need more work across all Ex01–Ex04 topics.
Calm & Focus protocol — Daily mindfulness module designed for engineers. Final-week exam nerves support built in.
48-hour offline cache — Works on offshore installations and remote sites. Syncs when reconnected.
Shift worker mode — No fixed daily schedule. Works around two-weeks-on two-weeks-off rotations.
Access Tiers
Free
POSISYS™
£0
Web AI assistant. General Ex guidance and the free Readiness Snapshot diagnostic.
Try Free →
Pro
POSISYS™ Pro
£89 lifetime
Full adaptive suite. Daily questions, PEACH, weakness tracking, dashboard, offline PWA, Calm & Focus.
Get Pro →
Optional — at 5-year recert
£49 Refresh Pack
Updated question sets, standards delta summary, refreshed Calm & Focus pack. Aligns with your five-year recertification cycle. Your lifetime access never expires — this is entirely optional.
Free to Use
Not sure where you stand?
Take the free Readiness Snapshot.
POSISYS™ Free includes a short diagnostic — the Readiness Snapshot — that maps your current strengths and gaps across Ex01–Ex04 topics. No payment needed.
Try POSISYS™ Free →General Ex Guidance
Ask POSISYS™ about protection concepts, zone classification, equipment marking, or IEC 60079 principles. Plain English from a Technical Authority knowledge base.
Smart Upgrade Path
When your Snapshot reveals gaps, POSISYS™ Free shows you exactly what Pro would work on — before you commit to anything.
Topics Covered
Ex01–Ex04 Gas & Vapours
What POSISYS™ Pro
prepares you for.
Full coverage of all four Gas & Vapours competence areas — built from the ground up by a 40-year Technical Authority.
EX01
Principles of Explosion Protection
Zone classification, gas groups, temperature class, auto-ignition, and hazardous area risk fundamentals.
EX02
Protection Concepts & Equipment
Ex d, Ex e, Ex i, Ex n, Ex p, Ex m — how each concept works, limitations, and appropriate application.
EX03
Equipment Selection & Installation
Equipment marking, ATEX labelling, certification categories, EPL levels, Zone 1 and Zone 2 selection.
EX04
Inspection, Maintenance & Repair
IEC 60079-17 inspection categories, documentation, permit to work, and DSEAR competence obligations.
IEC
IEC 60079 Series
Series structure, key parts, interaction with DSEAR, ATEX, and employer competence requirements.
DSEAR
DSEAR 2002 Competence
UK regulatory obligations, employer duties, risk assessment, and area classification documentation.
CALC
Hazardous Area Calculations
Safety barriers, zener barriers, entity parameters, intrinsic safety calculations, energy limitation.
PREP
Assessment Preparation
Exam technique, structured recall with PEACH, time management, and the Calm & Focus protocol.
Pricing
Simple, Fair, No Subscription
One price. Lifetime access.
Refresh when you recertify.
Engineers dislike subscriptions for tools they use every five years. So we built a pricing model that respects that.
Pro — Primary Offer
POSISYS™ Pro
£89 one-time · lifetime
Full adaptive preparation suite for the Ex01–Ex04 Gas & Vapours track. One payment, permanent access.
- Daily adaptive questions — 5, 15, or 30 per session
- Detailed explanations for every question
- Weakness tagging and spaced repetition
- Progress dashboard and completion tracking
- PEACH structured recall system
- Calm & Focus daily mindfulness module
- Final-week exam nerves protocol
- 48-hour offline cache — works on offshore
- Shift worker mode — no fixed daily schedule
- PWA — install to home screen, no app store
- Phone, tablet, and laptop compatible
Free — No Account Needed
POSISYS™ Free
£0
Web-based AI for general Ex guidance and the free Readiness Snapshot diagnostic.
- General hazardous area Q&A
- Readiness Snapshot diagnostic
- Plain English Ex principles
- Smart upgrade path to Pro
Optional — 5-Year Recert
£49 Refresh Pack
£49 per refresh cycle
Aligns with the five-year recertification cycle. Your £89 lifetime access never expires — this is optional.
- Updated question sets (standards changes)
- Standards delta summary
- Refreshed Calm & Focus protocol
- 25% referral discount available
Pricing note: All prices include VAT where applicable. Secure checkout via Stripe. Instant access upon payment. By purchasing you confirm you have read and accepted our Terms of Use. For digital products with immediate access, please review our refund and cancellation policy before purchase.
FAQ
What is Ex01–Ex04 and who needs this?
Ex01–Ex04 are the four Gas & Vapours hazardous area competence units assessed on a structured five-day course. Engineers, technicians, supervisors, and managers working where flammable gases or vapours may be present — oil & gas, chemical processing, refineries, offshore — are expected to demonstrate this competence. Certification is typically valid for five years.
Is The Engineering University affiliated with any certification body?
No. We are an independent platform operated by Saving Energy Consultants Ltd. We are not affiliated with, endorsed by, or connected to any awarding organisation, certification body, training provider, or regulatory authority. We provide preparation support only — not formal training or accredited instruction.
Does POSISYS™ Pro guarantee a pass?
No. POSISYS™ Pro is a preparation and study support tool. It does not guarantee examination success or the award of any qualification, certificate, or licence. Engineers remain responsible for meeting the requirements of their employer, duty holder, and any applicable awarding body.
What is the PEACH system?
PEACH is a structured recall framework built into POSISYS™ Pro: Protection concept, Equipment group, Atmosphere classification, Certification marking, Hazard considerations. It turns pressure into process — giving you a logical sequence for approaching any Ex question under assessment conditions.
Does it work offline? I work offshore.
Yes. POSISYS™ Pro is a Progressive Web App that caches your next 48 hours of questions for offline use. It installs to your phone home screen like a native app — no app store required. Progress syncs automatically when reconnected. Designed specifically with offshore and remote site engineers in mind.
I work shifts. Can I use it around my rotation?
Yes. Shift worker mode means no fixed daily schedule. You set your own cadence — morning, night shift, changeover, whenever it fits. The question engine adapts to your time, not the other way around.
What does the £49 Refresh Pack include?
The Refresh Pack is optional and aligns with your five-year recertification cycle. It includes updated question sets reflecting changes to standards, a standards delta summary, and a refreshed Calm & Focus protocol. Your £89 lifetime access does not expire — the Refresh Pack is for engineers who want their preparation to reflect the latest version of the standards at recertification time.
What topics does the preparation cover?
Zone classification (Zone 0, 1, 2), gas and vapour groups (IIA, IIB, IIC), temperature class, Ex protection concepts (Ex d, Ex e, Ex i, Ex n, Ex p, Ex m), equipment marking and ATEX labelling, inspection categories per IEC 60079-17, DSEAR 2002 competence requirements, permit-to-work principles, and IEC 60079 series structure. Full Ex01–Ex04 Gas & Vapours coverage.
Independent Learning Resource
The Engineering University provides independent preparation support only. It is not a substitute for accredited training providers, formal assessment, practical supervision, manufacturer documentation, employer procedures, or legal duties under DSEAR 2002 or any other applicable regulation.
Professional Responsibility
Users remain responsible for applying appropriate professional judgement. Employers, duty holders, and individuals must ensure all work is undertaken by suitably competent persons within the correct technical, procedural, and legal framework. Use of this platform does not confer competence, certification, or formal recognition of professional standing.