PowerPoint bemutat

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INVESTIGATION OF RADON   IN THE TURKISH BATH OF
EGER (HUNGARY) Norbert Kávási1, Katalin Nagy2,
János Somlai1, Tibor Kovács1, István Berhés3,
János Bereczki2 1Dept. of Radiochemistry,
University of Veszprém, POB 158, 8201 Veszprém,
Hungary 2Dept. of Rheumatology, Markhot Ferenc
Heves County Hospital, Eger, Hungary 33rdDept.of
Internal Medicine  

I. Hungarian-Turkish Balneological Workshop Eger,
Hungary 20-23 May, 2004
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1. INTRODUCTION1924 - The radon (222Rn)and
the radon daughter elements (218Po, 214Po) cause
lung cancer. The atmosphere always comprises
radon gas. It depends on numerous factors
-geological conditions, -distance from
surface of the earth, -part of the day
-meteorological conditions
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• The radon content of air can increase at
  workplaces or dwellings.
• The Turkish Bath with radon spa merit particular
  attention
• Hungarian legislation for workplaces
• Radon action level 1000 Bq/m3 yearly average
  radon concentration
• It means 6.3 mSv/year
• by
• 2000 h/year working time and 0.4 equilibrium
  factor
• Recommended standard for drinking water
• According to EC Recommendation (2001/928/Euratom)
• 1000 Bq/l as an action level

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2. INVESTIGATIONS
- continuous measurement of radon in the air
at the Török pool, at the
Pezsgo pool, and in the sister room -
passive integrating radon measurement in the air
at four measurement points
- sampling measurement of radon in spa,
spring and tap waters
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3. Materials and Methods

• 3.1 Measurement of radon concentration in air
• Continuous measurement
• ALPHAGUARD with ionization chamber
• RGM3 with scintillation cell
• RADIM-5 WP with semiconductor detector
• Passive integrating radon measurement
• Tastrak CR-39 solid track detector
• (allil-diglikol-carbonate,
  C12H1807)
• Calibration
• In a Genitron EVO 3209 calibration chamber
  using a PYLON 2000A radon emanation source

3.2 Measurements of radon concentration in water
RADIM-3 WP with semiconductor detector
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4. Results and conclusion
4.1 Results of continuous measurement in air
The radon concentration and the relative humidity
at the Török pool in August
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The radon concentration and the relative humidity
at the Török pool in November
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The radon concentration and the relative humidity
at the Török and the Pezsgo pool in March
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Radon concentration in the sister room in
November and March

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4.2 Results of passive integrating radon
measurement in the air
The monthly average radon concentration at four
measurement points
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4.3 Results of sampling radon measurement in
water
The radon concentration in spa, spring and tap
waters
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• 5. Summary
• The radon concentration in air of Turkish Bath
  fluctuates between 100 Bq/m3 and 2000 Bq/m3
• The radon concentration in the therapeutic waters
  is above 80 Bq/l and below 140 Bq/l but the
  curative effect is experienced
• The radon content of drinking waters does not
  exceed the action level
• - Intervention on radiation protection is
  unnecessary due to the powerful ventillation