£895.00 +VAT

SKU: W201 Category:


IOHTA – “Basic Principles of Occupational Hygiene”

W201 Course overview

OXYL8, the UKs leading LEV Training Course provider are pleased to offer this really interesting and rewarding foundation course in occupational hygiene. This W201 Training Course has been developed by the International Occupational Hygiene Training Association (OHTA) for which BOHS is the UK examining board.

W201 is an introductory training course which outlines the broad principles of Occupational Hygiene in the workplace.

The training course will be run as a 3 day Webinar/On-Line event.

For those considering progressing through the BOHS P600 series of LEV Training Courses towards the award of Certificate in Operational Competence (Control); ie CoC(Control) then W201 is not only highly recommended but it is understood will also enable the applicant to seek Specialist Licentiate status of the Faculty of Occupational Hygiene (LFOH(S)) from BOHS.

It is also understood that possession of W201 will satisfy the requirements of the ILEVE for an approved Occupational Hygiene module when seeking corporate membership.


BOHS do offer a limited number of Bursaries which cover the cost of the “W” series of training courses, including W201.  Details and application forms can be by contacting BOHS direct :-  BOHS Bursaries

As with all out training courses, comprehensive training course handouts and support material will be provided to all delegates with follow-up access to the restricted Delegate Area of this website where additional information and resources are available.

W201 Course Content

  • Introduction to occupational hygiene
  • Human physiology
  • Chemical hazard recognition
  • Physical hazards recognition
  • Hazard evaluation
  • Control of hazards.

Learning objectives

On successful completion of this W201 module the delegate should have a basic understanding of:

  • The value of occupational hygiene and the role of the occupational hygienist
  • The range of hazards [physical and chemical] in the workplace
  • Hazard recognition techniques
  • Sources and potential routes of exposure
  • Hazard evaluation, exposure assessment and the measurement processes
  • Methods of controlling exposure
  • The management of occupational hygiene programmes.


There are no educational pre-requisites for this W201 course. It will run as a 3 day taught course [minimum teaching hours 20 including practical demo and hands-on sessions] with revision/homework questions each evening.

There will be a 20 short answer question ‘open book’ on-line examination on the last afternoon with an allowed time of 60 minutes.

Who should attend?

  • LEV plant designers
  • LEV Examiners and testers
  • Health and safety professionals
  • Occupational health specialists (including physicians and nurses).
  • Specialists who want a broader appreciation of how their role interfaces with other professions over health issues in the workplace, in subjects such as
    • Acoustics
    • Ergonomics
    • Human factors
    • Occupational psychology
    • Organisation
    • Biosafety
    • Acoustics
    • Engineering
    • Analytical chemistry.

Towards professional recognition?

Success in the W201 training course can be added to other BOHS modules e.g. P601, P602, P603 and P604 (in various combinations) to gain further professional recognition through BOHS (e.g. Certificate of Operational Competence (Control) – which permits the successful candidates to use the post-nominal letters ‘CoC Control’ after their name) and also meet various membership levels for the Society of Operations Engineers (SOE) and the Institute of LEV Engineers (ILEVE).



Bill Cassells       BSc MPhil DSH CEng CMIOSH FIPlantE FSOE FRSPH RSP

Hazel Griffiths  BSc AFOH


W201 Course programme

If you would like to discuss any aspect of this course please call the tutor, Bill on 07970 754 632.

Introduction to occupational hygiene and human physiology

  • Definition of occupational hygiene.
  • History and background of the development of occupational hygiene. The importance of occupational hygiene today.
  • Introduction to the physiology of the human body
  • Physiological and psychological effects of occupational exposures to chemical and physical agents.

Chemical hazard and physical hazards recognition

Basic principles of risk assessments, definitions of hazard and risk with brief mention of expert systems and control banding.

  • Noise and vibration
  • Thermal stress
  • Introduction to the electromagnetic spectrum and the various bands of non-ionising radiation
  • Lighting in the workplace
  • Ionising radiations
  • Introduction to musculoskeletal injuries, ergonomics etc
  • Overview of the hazards associated with the use of display screen equipment.

Hazard Evaluation

  • Measurements (vapours, gases aerosols and dust using techniques for sampling)
  • Analytical methods
  • Hygiene standards and occupational exposure limits
  • Units of measurement, time-weighting, simple calculations/algebra
  • Compliance with statutory limits
  • Introduction to principles of epidemiological principles
  • Standard setting
  • Biological monitoring and health surveillance
  • Noise measurement
  • Measurement of the thermal environment
  • Principles of assessment of vibration
  • Non-ionising & ionising radiations
  • Principles of ergonomic risk assessment.

Control of Hazards

  • Elimination of the hazard
  • Substitution or change of form of material
  • Enclosures and process design
  • Basic principles of general ventilation and local exhaust ventilation
  • Personal protection (PPE, RPE and hearing protection etc.)
  • General ventilation and air conditioning.


The overall assessment for this module consists of an ‘open book’ written on-line examination of 20 short answer questions to be answered in 60 minutes. The questions require candidates to write short answers. Some questions may require simple calculations.


£895 (+exam fee £140) + VAT / delegate


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