Post on 12-Jan-2016
Presented bySofia Habity
HIGH VOLTAGE POWER LINES & PUBLIC HEALTH
Global map
Process Flow
• OH-HV• EMF• ELF-EMF
• Flawed studies• graphs
Introduction Support
Test Conclusion Refutation
Demonstrate studies
Statistics
OutcomeIsland, ''land of
giants'' artistic designs
Over Head High Voltage (OH-HV)
OH-HV radiate Extremely low frequency electromagnetic fields ( ELF-EMF)
- OH-HV EMF pulse 60 times/sec
INTRODUCTION
➢ Illustrations
➢ Lamp plugged in (turned off). ➔ Voltage between the plug and the device.➔ Electric field only.
➢ Lamp is turned on. ➔ Voltage produces a current flow; magnetic
field and electric fields➔ Voltage oscillating at 50-60 Hz.➔ Electric and magnetic fields oscillating at
50-60 Hz50-60 Hz oscillations create ELF-EMF
...Illustrations
Fluorescent light
bulbs lighting up
No batteries
Not plugged in to
power sources
No connections
to the ground
LONG TERM EFFECTS ( Under 345 kV, 500 kV) Sperm count Dynamic state of central nervous system Heart, vessel system Blood structure
SHORT TERM EFFECTS Headaches Abnormal fatigues Sleepiness
EVIDENCE AGAINST HIGH VOLTAGE POWER LINES
Emphasis on subject within 0 - 100 m
1. Power line is a dominant source of magnetic fields.
2. Risk of poor mental health.
3. Biological effects
4. Childhood leukaemia.
Yamazaki Shin et al (2006). Association between High Voltage Overhead Transmission Lines and Mental Health: A Cross-Sectional Study. Bioelectomagnetics
Extremely low frequency EMF field
Biological effect.
Exposure to intense fields
Exposure to Less intense fields
Magnetic phosphenes : the stars and colours you see when you run your eyes
EMF and childhood leukaemia
Ahlbom, A. Et al. (2000). A pooled analysis of magnetic fields and childhood leukemia British journal of cancer, Vol 83(5), p 692-698, 7p
Small sample size ( 10 linemen)
Only 10 subjects lived within 100 m
Low anticipation rate 23% 45% of women were
worried – only a mental state
REFUTATIONS
Yamazaki Shin et al (2006). Association between High Voltage Overhead Transmission Lines and Mental Health: ACross-Sectional Study. Bioelectromagnetics, Vol 27, p 473-478, 6p.
Emphasis on subject within 0 - 100 m
1. Power line is not always a dominant source of magnetic fields.
1. No biological effects
1. Childhood leukaemia.
Biological effect?
EMF and DNA
EMF possess insufficient energy to disrupt DNA covalent bonds
• Theoretical & observational confirmations for EMF to influence human health.
• Acute health effects in long term experiments
• Limited evidence.• Possible biases• Flawed studies• No significant causal
relationship
CONCLUSION
Some high voltage lines are better than others
'The land of giants' ISLAND
REFERENCESDr Niel Cherry ( April 2001). Evidence that Electromagnetic fields from high voltage
power lines and in buildings, are hazardous to human health, especially to young children. Environment Management and Design Division, New Zealand. P 2-51, 49p.
Young Louise B., Young Peyton H. (Dec 1974). Pollution by Electrical Transmission. Bulletin of the atomic scientists, Vol 30 (10), p 34-38, 5p.
Yamazaki Shin et al (2006). Association between High Voltage Overhead Transmission Lines and Mental Health: A Cross-Sectional Study. Bioelectromagnetics, Vol 27, p 473-
478, 6p.
Zenon Sienkiewicz (1998). Biological effects of electromagnetic fields and radiation. Journal of radiological protection, Vol 18 (3), p 185-193.
Gerald Draper, John Swanson, Tim Vincent, Mary Kroll (2006). Power Frequency Electric and Magnetic Fields in the light of Draper et al. 2005. Annals of the new york
academy of sciences, Vol. 1076 (1), p 318-330, 13p.
Ahlbom, A. Et al. (2000). A pooled analysis of magnetic fields and childhood leukaemia. British journal of cancer, Vol 83(5), p 692-698, 7p