NEBOSH International Diploma

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NEBOSH International Diploma 

NEBOSH Approved Centre LogoThe NEBOSH International Diploma is a prestigious and highly-respected qualification, which is seen as the leading qualification for health and safety practitioners around the globe. The course covers health and safety management, hazardous agents, and work equipment safety and builds on the topics studied in the NEBOSH International Certificate courses.

If you intend to work as a health and safety practitioner in the UK, the NEBOSH National Diploma might be more suitable. 

You can study the NEBOSH International Diploma by attending a classroom or blended learning course at our RRC Middle East offices in Bahrain and Dubai, or alternatively by distance/e-learning with unlimited help and support from our expert NEBOSH trainers - a great option for those who need to fit studying around other commitments.

The NEBOSH International Diploma meets the requirements to apply for graduate membership of IOSH (GradIOSH). With continuing professional development (CPD) you can then become a chartered safety and health practitioner as a chartered member of IOSH (CMIOSH). It also allows you to use the letters 'IDipNEBOSH' after your name.


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Course Content

The NEBOSH International Diploma course is split into four units of study, each of which is assessed separately:

  • Unit IA: International Management of Health and Safety
    Includes: Principles of Health and Safety Management, Loss Causation and Incident Investigation, Measuring and Reviewing Health and Safety Performance, Identifying Hazards, Assessing and Evaluating Risks, Risk Control, Organisational and Human Factors, Regulating Health and Safety.
  • Unit IB: International Control of Hazardous Agents in the Workplace
    Includes: Principles of Chemical Control, Toxicology and Epidemiology, Hazardous Substances - Assessment of Risk, Engineering Controls and Personal Protective Equipment, Monitoring and Measuring, Biological Agents, Noise and Vibration, Radiation, Psycho-Social Agents, Musculoskeletal Risks and Controls, Work Environment Risks and Controls, Managing Occupational Health.
  • Unit IC: International Workplace and Work Equipment Safety
    Includes: General Workplace Issues, Principles of Fire and Explosion, Workplace Fire Risk Assessment, Storage, Handling and Processing of Dangerous Substances, Work Equipment, Workplace Machinery, Mobile, Lifting and Access Equipment, Electrical Safety, Construction Hazards and Control, Workplace Transport and Driving for Work, Pressure System Hazards and Controls.
  • Unit ID: International Application of Health and Safety Theory and Practice.

You must complete all units within 5 years to achieve the full NEBOSH International Diploma qualification.

For more information, please see our NEBOSH International Diploma course brochure.

Entry Requirement

Previous health and safety qualifications, such as a NEBOSH Certificate, are strongly recommended before embarking on the NEBOSH Diploma course. 

For details on the knowledge required before starting to study the NEBOSH Diploma see our Guidance on Direct Entry to the NEBOSH Diploma


Units IA, IB and IC of the NEBOSH International Diploma are each assessed via one three-hour written examination. Unit ID is assessed via a written assignment of approximately 8,000 words.

Exams are held each January and July. We have exam centres in more than 80 countries worldwide, and we make all the arrangements for you.

All of our courses contain plenty of exam practice to ensure you are fully prepared for the exam.

Many of our trainers are also NEBOSH examiners, so they're well placed to provide advice and guidance throughout your course.

Revision Options

Revision Guide

Available as either printed booklets or e-booklets. This Guide is the essential revision tool to help you prepare for your exam; it contains a summary of each topic to refresh your knowledge, along with practice NEBOSH exam-style questions and model answers written by our expert tutors (many of whom are also NEBOSH examiners).  ...more




Full Course: 475 hours

  • Unit A: 189 hours
  • Unit B: 115 hours
  • Unit C: 115 hours
  • Unit D: 56 hours



Full Course: 35 Days (7 weeks) plus 225 hours private study

  • Unit IA: 15 Days (3 weeks) plus 70 hours private study
  • Unit IB: 10 Days (2 weeks) plus 50 hours private study
  • Unit IC: 10 Days (2 weeks) plus 50 hours private study
  • Unit ID: 55 hours private study

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Full Course: 15 Days (3 weeks) plus 350 hours private study

  • Unit IA: 5 Days (1 week) plus 135 hours private study
  • Unit IB: 5 Days (1 week) plus 80 hours private study
  • Unit IC: 5 Days (1 week) plus 80 hours private study
  • Unit ID: 55 hours private study


Revision Guide

Printed or PDF Download
Available for Units IA, IB & IC

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