Web Content Display Web Content Display

ERPA's Proclamation ERPA's Proclamation

Ethiopian Radiation Protection Authority Proclamation No 1025/2017

Click here to download ERPA's Proclamation NO. 1025/2017

 

የጨረራ ውስድ መጠን ለማስለካት የጨረራ ውስድ መጠን ለማስለካት

የድርጅቱ ስም፡ ዶዚሜድ የላብራቶሪ ፍተሻ

(የጨረራ ውስድ መጠን መለኪያ)

ስልክ ቁጥር፡- 0116900239/011878154

ሞባይል፡- 0961279384/85

ኢ-ሜይል፡- dosimedaddis@gmail.com

የቢሮ አድራሻ፡- 22 ማዞሪያ ጎላጎል ሕንፃ

              11ኛ ፎቅ

              ቢ.ቁ 1103

 

Organization: Dosi med Laboratory test

Address: 0116900239/011878154

Mobile: 0961279384/85

Email: dosimedaddis@gmail.com

Office: 22 Mazoriya Golagol 

             Building 11th Floor

            Office No. 1103  

Ethiopian Radiation Protection Authority Page Ethiopian Radiation Protection Authority Page

ERPA Photo Display ERPA Photo Display

lll
IRRS Mission In Ethiopia 2017
Metting
Discussion
Actual Evaluation at Tse Tse Fly
Women's Day celebration
MOU Signing with Haromaya University
MOU Signing with Diredawa University
MOU Signing with SUDAN
MOU Signing with SUDAN

Asset Publisher Asset Publisher

Back

UV Radiation

Ultraviolet (UV) radiation is part of the sun’s light spectrum that reaches the earth.  The wavelength of UV is longer than X-ray and shorter than visible light.

Ultraviolet (UV) radiation is undetectable by the human eye. Although, when it falls on certain materials, it may cause them to fluoresce—i.e., emit electromagnetic radiation of lower energy, such as visible light. Some insects, mammals, and fishes are able to see ultraviolet radiation.

There are two (2) types of sources of ultraviolet radiation.

  • Natural sources (sunlight)
  • Artificial sources like Tanning beds and Germicidal lamps.

 

               

 

 

 

 

There are three types of ultraviolet radiation (UVR)

            A.UVA (315-400) nm tanning ray

  • Accounts for 95% of the UV radiation that reaches the earth surface
  • used in a tanning bed
  • Causes wrinkles and premature aging of the skin
  • Penetrates clouds and glass windows-always

            B.UV B (280-315) nm burning ray

  • Affects the top layer of skin
  • Cause most sunburns
  • Linked strongly to skin cancer
  • Damages DNA in your skin
  • Burns unprotected skin in as little as 15 minutes

           C. UV C (100-280) nm dangerous ray

It does not reach the earth’s surface (absorbed by the atmosphere)

  • It is  not normally considered a risk factor for skin cancer
  • It is  found a man-made source  of UVC radiation(mercury lamps, welding torches)
  • It is  used in tanning

Application of Ultraviolet radiation

  1. Water disinfection  
  2. Germicidal Irradiation (UVGI)
  3. Air purification                               
  4. To trap insects
  5.  In Medicine: For certain skin diseases and other skin conditions, the prolonged exposure to UV light is better therapy. This exposure to UV light is called as photo-therapy. Even newborn babies can have jaundice due to break down of hemoglobin. Then doctors treat them by phototherapy by using a bright light or UV light.
  6. Vitamin D Production
  • UVB is able to convert sterols in the skin, such as 7-dehydrocholesterol to vitamin D
  • Vitamin D is required to assist in the absorptions of calcium and phosphorus from the intestine to the bloodstream.

Risk of UV radiation

  1. Burning: Will occur if  too high dose is used
  2. Premature aging of skin: chronic exposure to UV radiation, including sunlight is associated with premature aging of the skin. The skin may dry, coarse, leathery appearance with wrinkling and pigmentation collage degeneration that accompanies long term exposure to UV radiation.
  3. Carcinogenesis: prolonged exposure to UV may be a risk factor for the development of squamous cell and malignant melanoma.
  4. Eye damage: UV of the eyes can cause photokeratitis, conjunctivitis, and cataract.

How to Protect UV risk?

You need to protect your skin from the sun, especially during 10 am to 4 pm it is the sun’s most dangerous hours. There are some methods recommended for the protection, these are:

  • Using sunscreen
  • Shade in lotions, creams, ointments, gels, sprays, and wipes according to prescriptions made by physicians (medical doctors).
  • Wearing protective clothing, hat.
  • Wear sunglasses to protect the eyes.

 

 

Sources:-

w.pharmaguideline.com/2013/07/ultra-violet-light-for-disinfection.html
Average (0 Votes)


No comments yet. Be the first.