Bpk180 week 13 environmental factors

Q: What does S = M – W ± R ± C ± K – E represent

A: Body heat balance (thermoregulation equation)

Q: In a cold rainstorm, which terms are strongly negative

A: Radiation (R), convection (C), conduction (K), Sweat evaporation (E) is minimal

Q: Result of November Vancouver rainstorm on thermal comfort

A: Net heat loss; high cold-stress risk

Q: How does counter-current heat exchange work

A: Warm arterial blood warms returning venous blood to conserve heat

Q: Heat exhaustion vs heat stroke difference

A: Exhaustion = heavy sweating,

Q: Jobs at risk for heat illness

A: Construction, agriculture, roofing, firefighting, kitchens, mines

Q: What is a natural frequency

A: The frequency an object naturally vibrates at; resonance risk

Q: Effects of HAV

A: Numbness, reduced dexterity, HAVS

Q: Effects of WBV

A: Low back pain, fatigue, vision issues

Q: Engineering controls for HAV

A: Anti-vibration handles, low-vibration tools

Q: Administrative controls for WBV

A: Rest breaks, speed reduction, operator training

Q: Light characteristics affecting performance

A: Intensity, glare, contrast, flicker, colour temperature

Q: Other environmental hazards

A: Air quality, vibration, shift work, humidity extremes