1. EditablePowerPoint Slides for Lecturers By Phil Hughes MBE and Ed Ferrett By Phil Hughes MBE and Ed Ferrett

2. Physical and psychological health hazards and control C hapter 15

3. After reading this chapter you should be able to: 1.Identify work processes and practices that may give rise to musculoskeletal health problems (in particular work-related upper limb disorders – WRULD) and suggest practical control measures 2. Identify common welfare and work environment requirements in the workplace 3. Describe the health effects associated with exposure to noise and suggest appropriate control measures 4.Describe the health effects associated with exposure to vibration and suggest appropriate control measures 5.Describe the principal health effects associated with heat, ionising and non-ionising radiation and outline basic protection techniques 6.Explain the causes and effects of stress at work and suggest appropriate control actions 7.Describe the situations that present a risk of violence towards employees and suggest ways of minimizing such risk 8.Describe the effects on health and safety of alcohol and drugs and outline control actions. Physical and psychological health hazards and control

4. Figure 15.1 Workstation ergonomic design improvements After (a high chair could also be provided) Before

5. Figure 15.2 Poor workstation layout may cause WRULD

6. Figure 15.3 Injuries which can be caused by hand-arm vibration

7. Figure 15.4 Mounted breaker to reduce vibration for the operator

8. Figure 15. 5 Vibrating Roller

9. Figure 15.6 Workstation design

10. Figure 15.7 Well lit workplace

11. Figure 15.8 Better to control noise at source rather than wear ear protection

12. Figure 9 Passage of sound waves (a)The ear with cochlea uncoiled and (b) summary of transmission

13. Figure 15.10 and Table 15.6 Typical ear protection zone signs and sound pressure levels

14. Table 15.7 Need for a noise assessment

15. Figure 15.11 Noise paths found in a workplace (a) The quiet area is subjected to reflected noise from a machine somewhere else in the building (b) The correct use of absorption in the roof will reduce the reflected noise reaching the quiet area (c) Segregation of the noisy operation will benefit the whole workplace

16. Figure 15.12 Heat equation

17. Figure 15.13 Ionizing Radiation warning signs The IAEA Ionizing Radiation warning symbol –ISO 21482 Recently introduced The radiation hazard symbol

18. Figure 15.14 A Class 4 laser setup for defeatable access control for properly trained persons

19. Figure 15.15 Specialized eye protection for work with lasers

20. Figure 15.16 Security coded access and surveillance CCTV

21. Typical noise assessment record