NEBOSH National Diploma Course

The NEBOSH National Diploma in Occupational Health and Safety is the flagship NEBOSH qualification for health and safety professionals and is the logical next step for those people who have completed the NEBOSH General Certificate and are looking for a career in professional health and safety. 

Who is the NEBOSH National Diploma course for?

If you’re  health and safety professional wanting to study for the very best health and safety qualification, then the NEBOSH National Diploma course is for you. Introduced in 1988, it has become the UK’s number one choice for aspiring H&S professionals, with over 10,000 candidates having successfully completed the qualification. The course gives students the expertise required to undertake a successful career as a health and safety professional, and is continually updated to provide candidates with the very latest tools and techniques to be effective in their role. It also provides students with a sound basis and foundation for further postgraduate training and education.

Key learning outcomes

Course details

Unit A

A1 Principles of health and safety management

This module concentrates on the reason for the effective management of health and safety, including the moral, legal and economic factors,  as well as looking at the principles and content of effective health and safety systems.

A2 Loss causation and incident investigation

Candidates will learn about loss causation and look at the quantitative analysis of accident and ill-health data. They will also look at statutory and internal reporting of health and safety data as well as analysing loss investigations.

A3 Measuring and reviewing health and safety performance

This module looks at the purpose of performance management with regards to safety arrangements and objectives. It also looks carefully at health and safety monitoring systems as well as a variety of techniques and tactics for monitoring H&S.

A4 Identifying hazards, assessing and evaluating risk

Candidates in this module will look at risks and learn how to use both internal and external sources to identify them, as well as learning how to implement an effective risk management strategy. Students will also look at failure tracing methodologies.

A5 Risk control

In this module, candidates will look at common risk management strategies as well as looking at how to select risk controls and develop safe work systems and permit-to-work systems.

A6 Organisational factors

Students in this module will look at the range of internal and external factors that can influence health and safety in an organisation. Students will look at an organisation as a system, looking at different types, their characteristics and relationship to their individuals within. Legislative requirements are also looked at, as are a range of other factors including H&S culture and climate.

A7 Human factors

Module A7 of the Diploma, NEBOSH  students will look at the psychological and sociological factors that may impact upon individuals that may give rise to safe or unsafe working practices.

A8 Principles of health and safety law

This module looks at both UK and EU law relevant to health and safety, and how they interact. This includes relevant Acts, Regulations and Orders as well as looking at the sources of law and the principles behind them.

A9 Criminal law

This NEBOSH National Diploma module looks at both the Management of Health and Safety at Work Regulations 1999 and the Health and Safety at Work Act 1974 and their important requirements. It also looks at Approved Codes of Practice as well as enforcing agencies and their powers.

A10 Civil law

This module looks at the main duties under common law as well as  the criteria required for a successful civil action. Students will also look at what statutory duties occupiers of premises have to visitors who are both lawful and unlawful.

Unit B

B1 Principles of toxicology and epidemiology

In this first module of the Diploma’s Unit B, NEBOSH students will look at the legal framework of chemical safety as well as looking at human anatomy, the sensory organs and the routes chemicals take to attack the body.

B2 Hazardous substances and other chemicals – assessment of risk

This module helps students to consider the what factors to take into account when assessing risks of hazardous substances. It pays attention to the particular requirements of dangerous substances such as lead and asbestos.

B3 Hazardous substances and other chemicals ­ engineering controls and personal protective equipment

This module looks at PPE (personal protective equipment) that can be used when dealing with hazardous substances. It also looks at ventilation and the procedures needed to ensure it is effective.

B4 Monitoring and measuring

This is a detailed unit that looks at a number of concepts including WELs (workplace exposure limits), EH40, occupational exposure limits and the control limits for working with asbestos.

B5 Biological agents

Unit B5 sees NEBOSH students look at what biological agents are and the different types (viruses, bacteria etc) and sources (environmental, animal, human). Also studied are the special properties of biological agents.

B6 Physical agents – noise and vibration

Students in this module will learn about the basic physical concepts related to noise as well as the its effects, measurement and assessment. Also looked at will be ways of controlling noise exposure and the effects of noise on people.

B7 Physical agents – radiation

Ionising and non-ionising radiation is studied in this module as is the effects of exposure and its control and measurement. Workplace lasers are also studied, their sources, classification and control.

B8 Psychosocial agents

Work related stress is studied in this module, its effects and causes being of particular importance. Other related areas studied are work related aggression and violence and how stress and violence can be controlled in the workplace.

B9 Musculoskeletal risks and controls

This module lets NEBOSH Diploma students study musculoskeletal hazards, including their types, causes and examples, as well as looking the assessment and control of risks from manual handling and repeated activities.

B10 Work environment risks and controls

Candidates in this module will look at the need for, and the factors involved in in providing sufficient lighting and thermal comfort in the work environment. Welfare facilities are also looked at as is the required provision for first aid safety.

B11 Managing occupational health

During this module the nature of occupational health is looked at along with the following categories: biological, physical, chemical, ergonomic and psychosocial. Rehabilitation is also looked at as is the practical and legal aspects of managing occupational health and safety.

Unit C

C1 General workplace issues

This introductory module for Unit C looks at safe working environments and what factors go towards their creation. Students will look at safety signs, safe working practices, risks, hazards and controls when working alone or working at height.

C2 Principles of fire and explosion

In this module, students start by looking at both explosive materials and flammable materials and how they ignite and cause safety issues. Also looked at are buildings, materials and building contents in a fire and how they behave.

C3 Workplace fire risk assessment

This module looks at the legal requirements for workplace fire safety and looks at the process in identifying relevant hazards and assessing the potential risks from fire. Other factors looked at in the module include evacuation and escape procedures.

C4 Storage, handling and processing of dangerous substances

Industrial chemical process and their main physical and chemical characteristics are looked at in this module as are the factors considered when safely storing, handling and transporting dangerous and hazardous substances. Emergency planning is also looked at.

C5 Work equipment (general)

Students will look at the importance of suitable work equipment and the importance of this in reducing, minimizing and eliminating risk. Its location, construction and design will also be looked at as will various considerations such human reliability, anthropometrics and ergonomics.

C6 Work equipment (workplace machinery)

This module lets students study the integration of workplace machinery into a safer workplace and to consider the issues that arise from this. Included in this module are the importance of information and warnings on equipment and the key safety characteristics all workplace machinery should have.

C7 Work equipment (mobile, lifting and access)

Module C7 of the Diploma lets NEBOSH students look at mobile, lifting and access equipment and the hazards and control measures needed for the safe use of these.

C8 Electrical safety and Electricity at Work Regulations 1989

This module lets students study the Electrical Safety and Electricity at Work Regulations 1989. They will look at the basic principles of electricity, its dangers and the the safety issues that arise from its installation, use, maintenance and inspection.

C9 Construction hazards and controls

Construction health and safety is the focus of this module and it lets student study in detail the Construction (Design and Management) Regulations 2015. Amongst the areas studied will be safe practices in demolition, working a height or on temporary structures and the hazards that can occur from excavation work.

C10 Workplace transport and driving for work

This module looks at safe workplace transport and its hazards, risks and controls. Risk is studied as are measures used to reduce work related driving risks.

C11 Pressure system hazards and controls

The final module of Unit C sees students studying the safe use of pressure systems, liquefied gas storage, heating systems and refrigeration systems. Students will study their safe use and the causes of failure and what failure prevention strategies should be used.

Unit D

Unit D of our course the NEBOSH National Diploma is a practical assessment and candidates will be expected to produce an 8,000 word document on the application of health and safety theory and practice.

This will involve you having to complete a detailed and comprehensive review of H&S in an organisation or workplace. Is should include a plan to improve performance, which will show your knowledge from Units A, B and C and how you can apply it.

You will need to carry out a detailed review of the health and safety of a workplace/organization, producing a plan to improve performance and applying your knowledge gained from Units A, B and C.


Tutors on all NEBOSH courses run by ourselves are taught by highly qualified and industry experienced Chartered Health and Safety practitioners.

Course materials

Candidates will be given comprehensive and up-to-date course materials that they will find invaluable.


Units A, B and C of the NEBOSH National Diploma course are each assessed by a three-hour written examination. Unit D is assessed by an 8,000 word work based project.


Those successfully completing the course will receive a NEBOSH National Diploma in Occupational Health and Safety.

To enquire about our NEBOSH National Diploma courses, please use the contact form below.