W201 – “Basic Principles of Occupational Hygiene”

Course overview

W201 Basic Principles of Occupational Hygiene training course has been developed by the International Occupational Hygiene Training Association (OHTA) for which BOHS is the UK examining board.  It is an introductory 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 with some dates available as face-to-face training at Hilton Hotel, Leicester.

At checkout – there is no need to pay at that stage.  We will send out Invoices approx 5-6 weeks prior to the course start date.

W201 is recommended for those delegates considering progressing through the BOHS P600 LEV series of courses (P601 , P602 , P603 , P604 ) towards the award of Certificate in Operational Competence (Control); ie CoC(Control).  In this case W201 may also enable the applicant to apply to BOHS for Specialist Licentiate status of the Faculty of Occupational Hygiene (LFOH(S)).

As with all OXYL8 training courses, comprehensive training course handouts and support material will be provided with post-course access to the dedicated Delegate Area of this website where additional W201 Course 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 course module the delegate will 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 Basic Principles of Occupational Hygiene course. It is run as a 3-day taught course [minimum teaching hours 20] with revision/homework questions to be completed in the evenings.

The exam is in the form of 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?

A W201 certificate 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).


  Bill Cassells    BSc MPhil DSH CEng CMIOSH FIPlantE FSOE FRSPH RSP
  Hazel Griffiths   BSc CoC(Control) LFOH

LinkedIn Profiles
Bill – http://www.linkedin.com/in/ bill-cassells-216a83b8
Hazel – https://www.linkedin.com/in/hazel-griffiths-862823a5/


The overall assessment for this module consists of an ‘open book’ written on-line examination with 20 short answer questions to be answered in 60 minutes.


£975 (+exam fee £140) + VAT / delegate

Book Course Now

LEV Course Training Videos

Customer Reviews

“Bill I must thank you for a very enjoyable LEV course. I have to say that, the way you developed the information was first class – the delivery was fluent, natural – in fact it came across as extemporaneous! It was also very informative about the subject so as to enable us to undertake the practical aspects out on site. I don’t profess to be an expert in such matters – but I thought it was very well done and it’s no surprise that your pass rate is high. ( I just hope to be in that statistic!)”

Damien M

“I would like to give Bill Cassells a huge shout-out. Absolutely fantastic Tutor with more knowledge in LEV training than anyone I have ever met. Just received my LEV certificates today in both P601 and P602. Without the help of Bill this probably wouldn’t have happened. Anybody thinking on doing these LEV courses, look no further than this Man. I will hopefully be doing the P604 Course at some point also.”

Gary S

Website by Built By Ecko