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W505 Control of Hazardous Substances



 Describe the ways in which exposure to hazardous substances arises in the workplace, and to introduce the methodologies and technologies available to control exposures and thereby reduce risks to health.


Learning Outcomes

On successful completion of this module the student should be able to:

describe how airborne contaminants are generated by industrial processes, how this impacts on the control strategy, and how control solutions can thereby be optimised;

recognise the range of approaches to risk reduction embodied in the hierarchy of control and select appropriate strategies for implementation;

describe the meaning of “adequate control”, particularly in relation to personal exposures;

discuss the importance of design considerations in terms of the workplace, process, and plant, as a means of reducing occupational exposures;

describe the principal elements of a local exhaust ventilation system, give examples of typical installations and know how to carry out the necessary measurements to assess whether a local exhaust ventilation system is effective and operating to the design specification;

recognise the limitations of local exhaust hoods and enclosures and the means to optimise their effectiveness;

describe how personal protective equipment programmes may be used in an effective manner;

recognise the impact that control measures may have on other workplace hazards and understand the need to take a holistic approach to the design of control solutions.


Course Format


Run as a 5 day taught on-line course including lectures, tutorials, practical/demonstration sessions, guided reading, overnight questions and on-line examination on the final day.


The written examination will be a 40 short answer question “open book” examination with an allowed time of 120 minutes.



The topics included in the W505 Module


Hazardous Substances Uses and Processes

Workplace Control Principles

Process Design and Principles

Ventilation Systems and Performance Assessment

Personal Protective Equipment

Administrative Elements


For the full course specification please refer to the W505 syllabus which can be found in the approved course materials section of the OH Learning website as a download.  


Training info

Status: This event is approved by OHTA for the international qualifications scheme
Approved by OHTA
Category: Hazardous Substances
Level: Intermediate
Training provider: Diamond Environmental Ltd


Location On-line , Real time ( GMT ) delivery and attendance
Starts 25 Oct 2021 09:00
Ends 29 Oct 2021 14:00
Course leader Mike Slater, DipOH, CFFOH.
Places 8
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