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CompEx Toolbox Guide Edition 7

CompEx Toolbox Guide Edition 7

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The Toolbox Guide provides the concise guidance that you will need whilst on site, but there will be occasions where you will need to dig a bit deeper for the answer. The publication is closely associated with the CompEx training and competency assessment scheme which provides candidates with essential knowledge and practical skills for safe working in potentially explosive atmospheres.


Following the release of the ‘Practitioner’s Handbook’, which was prepared under the auspices of the CompEx Scheme Committee and first published in 1997 by EEMUA as Publication 186, many requests were received for a toolbox version that could be carried easily and used as a ready reference by workers in this field. This pocket-sized book is the outcome. This Toolbox Guide, EEMUA Publication 214, is especially recommended to all technicians who have taken the CompEx course to remind them of both the knowledge and practical elements of the course, which they are expected to apply when working on electrical installations situated in potentially explosive atmospheres. Both of these publications have the support of industry in general and the petrochemical industry in particular. The content has been discussed widely to minimise the possibility of serious error and omission.

Key Toolbox Guide Content

  1. Directives, Standards and Legislation
  2. Gases and vapours and area classification
  3. Equipment - explosive gas atmospheres
  4. Installation
  5. Inspection
  6. Maintenance
  7. Combustible dusts
  8. Fuel filling stations
  9. Water and waste water industries
  10. Mechanical
  11. Application design engineering and duties of the Responsible Person
  12. Definitions
  13. The CompEx competency scheme

The CompEx Competency Scheme

  • Unit ExF: a short duration ‘foundation’ course, developed to deliver an appreciation of the hazards associated with working in potentially hazardous atmospheres.
  • Units Ex01 & Ex02: Gas and vapours – Preparation, installation, inspection and maintenance of electrical equipment with types of protection 'd', 'e', 'p', 'n'.
  • Units Ex03 & Ex04: Gas and vapours – Preparation, installation, inspection and maintenance of electrical equipment and systems with type of protection 'i', intrinsic safety.
  • Units Ex05 & Ex06: Dusts – Preparation, installation, inspection and maintenance of electrical equipment suitable for use with combustible dust.
  • Units Ex07 & Ex08: Fuel filling stations– Preparation, installation, inspection and maintenance of electrical installations at fuel filling stations.
  • Units Ex09 & Ex10: Water industry – – Preparation, installation, inspection, test and maintenance of electrical equipment in explosive atmospheres within the water industry.
  • Unit Ex11: Mechanical – Preparation, installation, inspection and maintenance of mechanical equipment in explosive atmospheres.
  • Unit Ex12: Application design engineer – design of electrical equipment installations in explosive atmospheres.•
  • Unit Ex14: Responsible Person
  • Unit Ex01R - Ex04R: Recognised Practitioners Programme

Bulk Ordering

Discounts are available for bulk ordering of Toolbox Guides and will be applied at checkout.


10+ units = 10% off single unit price

25+ units = 15% off single unit price

50+ units = 20% off single unit price

100+units = 25% off single unit price 

Shipping & Returns

Shipping is calculated at checkout and based upon the weight of the item/s that you order. We use Royal Mail 1st Class Signed For to distribute our products. Please note ID Cards and Certificates are customised items and are therefore non-refundable.

Note: Please allow 3 working days for delivery of Certificates and ID Cards following completion of verification

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Contact Us

CompEx Certification Limited

3rd Floor Redwither Tower
Redwither Business Park
Wrexham Industrial Estate
Wrexham UK
LL13 9XT

+44 (0) 1978 665410

  • Industry

    At CompEx, we know that safe working practices are beneficial for all businesses. The CompEx Scheme ensures that best practice in managing explosive atmospheres is implemented and maintained right from the start, which not only keeps workplaces, staff and assets safe, but also reduces risks and costs.

    From food and beverage or manufacturing businesses, to pharmaceutical and chemical production, or traditional power generation sectors such as oil and gas, CompEx offers a wide range of qualifications for a variety of industries which are suitable for those working in hazardous environments

  • CompEx Qualifications

    Whether you are starting a career as a newly qualified electrical operative working in a hazardous environment, looking to work in a new type of industry, or you are simply up-skilling and developing your knowledge about hazardous locations, CompEx offer a broad range of qualifications which are essential for improving workplace safety and competency within potentially hazardous environments.

    You can find out more by selecting one of the qualifications below or you can download our qualification documentation, which provides full details about each CompEx unit, including the key learning objectives and course content.