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W502– Thermal Environment



Provide the student with a sound understanding of the effects of the thermal environment on people and means of assessing and controlling the risks associated with thermal stress.


Ø  5-days course [minimum 45 hours including practical/demonstration sessions, lectures, tutorials, guided reading, overnight questions and examination]

Ø  There will be a 40 short answer questions “open book” examination with an allowed time of 120 minutes


On completing this course successfully, the student will be able to:

- Identify sources of thermal stress within the working environment
- Understand the nature of thermal strain on the body;
- Assess the thermal environment through appropriate measurement and other means;
- Evaluate the likely risk from exposure to thermal stress;


1.The Thermal Spectrum

1.1 Extreme Temperatures

1.2 Moderate Temperatures

2. Principles

2.1 Heat Stress

2.2 Heat strain

2.3 Homeostasis

2.4 Thermal Regulation including Feedback and Control Mechanisms

2.5 Physiological Responses to Hot Environment

2.6 Physiological Responses to Cold Environments

2.7 Heat Production and Heat Exchanges with the Surroundings

2.8 The Heat Balance Equation - Definitions of Terms

2.9 Metabolic Heat Production and Efficiency

2.10 Sensible Heat Exchanges

2.11 Latent Heat Loss

2.12 Acclimatization

3 Effects of Temperature Extremes

3.1 Effects of Excessive Heat Strain – Hot Environments

3.2 Effects of Excessive Heat Strain – Cold Environments

3.3 Predisposing Factors

4. Thermal Comfort

4.1 Thermal Comfort

4.2 Scales for Subjective Evaluation of Comfort

4.3 Actual Ideal Indoor Environments

4.4 An Introduction to the Work of Fanger

5. Evaluation of Hot Environments

5.1 The Use of Heat Stress Indices

5.2 Effect of Heat Stress

5.3 Effective and Corrective Effective Temperatures

5.4 Heat Stress Index

5.5 Required Sweat Rate (PHS)

5.6 WBGT

6.Control of Hot Environments

6.1 Personal Factors Mitigating Against ‘Hot’ Work

6.2 A Simple Introduction to Control by Engineering and Organisational Measures

6.3 Hot Surfaces

      7. Thermal

7.1 Measurement Equipment

7.2 Survey

7.3 Assessment of the Degree of Risk

8. Evaluation of Cold Environments

8.1 Assessment Indices

9. Control of Cold Environments

9.1 Personal Factors

9.2 Engineering Controls

9.3 Management Controls

9.4 Clothing

10. Approaches to Risk Assessment

10.1 AIOH Tiered Approach

10.2 SA DoM&E Code of Practice for an Occupational Health Programme on Thermal Stress

10.3 ACGIH Thermal Stress TLVs

10.4 Quantitative & Qualitative Approaches

10.5 Physiological Assessments

Training info

Status: This event is approved by OHTA for the international qualifications scheme
Approved by OHTA
Category: Thermal Environment
Level: Intermediate
Training provider: Sustainable EHS LLP


Location Vadodara
Starts 26 Feb 2020 00:00
Ends 01 Mar 2020 00:00
Course leader Utpal Bhavsar CIH, CSP
Places 12
Website visit site
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