March 14th, 2011 – A good qualitative idea of the types of doses such releases can be expected to deliver

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From: Lewis, Doris
Sent: Tuesday, March 15, 2011 7:42 AM
To: Sherbini, Sami; Shaffer, Vered
Subject: RE: chernobyl doses

Thanks Sami!

Thanks Vered!

From: Sherbini, Sami
Sent: Monday, March 14, 2011 7:02 PM
To: Shaffer, Vered
Cc: Lewis, Doris
Subject: RE: chernobyl doses

Vered, Doris,

Very nice.

The information should give the ops center people a good qualitative idea of the types of doses such releases can be expected to deliver.


From: Shaffer, Vered
Sent: Monday, March 14, 2011 5:34 PM
To: Sherbini, Sami
Cc: Lewis, Doris
Subject: chernobyl doses

Hi Sami,

Doris and I came up with this response based on information we found in the documents below.

Let us know what you think!


** Info from the Chernobyl Forum booklet Pages 11 and 12


** Info from NUREG 1250 Report on the Accident at the Chernobyl Nuclear Power Station (chapter 7)

Population categories exposed from the Chernobyl accident:

– Emergency and recovery operation workers who worked at the Chernobyl power plant and in the exclusion zone after the accident;

– Individual doses estimated to range from 2 – 20 Gy (200 rads – 2000 rads); Average lethal dose of 4 Gy (400 rads)

Inhabitants who were 3-7 km around the plant
– Effective doses estimated to be 54 rem (540 mSv)
– Inhabitants evacuated from contaminated areas
– Effective doses estimated on the order of 3.3 rem (33 mSv)
– Inhabitants who remained in the contaminated areas for 7 days or more
– Effective doses estimated from 60 – 80 rem ( 600 – 800 mSv)
– For 135,000 evacuees exposed from the plume and by radionuclides deposited on the ground
– Individual effective doses estimated at 12 rem per person



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