Uploaded on


  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads


Total Views
On Slideshare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. Effect of radiation 3 s1180050 Takahiro Oda
  • 2. Index● How much radiation is dangerous?● Warning of food radiation.● CT scan radiation.● Japan emergency workers.● Tokyo water radiation.
  • 3. How much radiation is dangerous? ● People are constantly exposed to some level of natural radiation. But the change appears when the definite value is exceeded.For example ● 50-100: changes in blood chemistry ● 500: nausea, within hours ● 700: vomiting ● 900: diarrhoea ● 1,000: haemorrhage ● 4,000: possible death within 2 months, if no treatment
  • 4. Warning of food radiation● Cases of contaminated vegetables and milk have already stoked anxiety despite assurances from officials that the levels are not dangerous.● The government has prohibited the sale of spinach from all four prefectures near the plant and also banned selling of raw milk from Fukushima prefecture.
  • 5. CT scan radiation● Old times, CT scans done in 2007 alone will cause about 29,000 cancers and kill nearly 15,000 Americans.● The radiation dosage from one scan typically ranges from a few millisieverts comparable to the yearly background radiation from natural sources to tens of millisieverts.
  • 6. Japan emergency workers● Nuclear power plant may give emergency workers "lethal doses" of radiation.● It would be very difficult for emergency workers to get near the reactors.● The doses they could experience would potentially be lethal doses in a very short period of time.
  • 7. Tokyo water radiation● The radiation levels in Tokyo city tapwater has dropped back below the safety limit for infants.● The concern about radiation in water comes as workers try to prevent leaks of radiation from an earthquake-damaged nuclear power plant 150 miles north of Tokyo.
  • 8. Thank you for listening.