????????(RI???????) - PowerPoint PPT Presentation

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????????(RI???????)

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Title: Author: Naoki Last modified by: Naoki Created Date: 2/10/2005 6:30:51 AM Document presentation format – PowerPoint PPT presentation

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Title: ????????(RI???????)


1
?????????????
  • ??????????????????
  • ?? ??

??16??????????? 2005.2.20
2
?????????????
  • ????
  • ???????????
  • ????????????

3
????
4
????????????????????
  • ????????(RI???????)
  • ?????????????????????????
  • ???????????(?????????)
  • ?????????????????????????

5
?????????????
  • ????
  • ??????
  • ???????
  • ????
  • ??????
  • ?????
  • ????
  • ?????
  • ????(????????)

6
????
RI? ???
?? ????????(?????????????????) ???????????????????????????
?? ????????????? ????????????????
?? ????????????1?????????? ???6??????1?
7
????
RI?
?? RI???????????????????? RI?????????????????????????????????????????? RI?????????????????????????????? ??????????????????????????????????????????
8
????
RI? ???
?? ??????????? ?????????????????????????????????????????????????????? ??????? ??????? ???????????????????????????????????????????????????????
9
????
RI? ???
?????? ??????? ???????????????????????????????????????? ?? ?(???????????) ???????????? ???????????????????? ???(?????????????????) ??
?????? ??????? ???????????????? ??1???????????5mSv????????????????1???????????5mSv????????????????????????????????????????
10
??????
  • 100mSv/5?
  • ???50mSv/????????
  • ???????
  • 5mSv/3?
  • ??????
  • 1mSv/????(?????)

11
???????
??15?4???16?3???????(????????)??????
?? 281,000? ?? 64,000?
12
??????????
  • ??????????
  • ??????(???????)?????
  • ??????????????
  • ??????????
  • Bioassay
  • Whole Body Counter

13
???????????
14
????????(ICRP)
  • ?????????????????????????????????????????????????
  • ??????????????????
  • ???????????????

15
???????????
  • ?????
  • ???????????????????
  • ??????????????
  • ?????
  • ???????????????????????????????
  • ????????

16
?????? ??????
??? ?? ?? ???? ?????(/Sv)
???? ???9? ????? 0.05?0.1Gy
????? 2??8? ?? 0.1Gy
??? 9???? ?????? 0.12Gy?0.2Gy 1?4x10-1
?????????????????????
17
?????? ?????????
4 x 10-2 / Sv
20mSv(?????????)?40?????????????
4 x 10-2 x 20 x 10-3 x 40 3.2 x 10-2
??????
???????
??
24(24x10-2)
27.2(27.2x10-2)
??????
?????????????????
18
???????(ICRP)
  • ??????
  • Justification of practice
  • ??????
  • Optimization of protection
  • As low as reasonably achievable ALARA
  • ???????
  • Dose limitation

19
????????
  • ?????
  • ????
  • ?????
  • ???????
  • ?????
  • ?????
  • ???????(??????????????)

20
????????
  • ????????
  • ???????
  • ????????????
  • ???????????
  • ????????
  • ???????
  • ???????????
  • ?????????

21
????????X?????????????????10?6?30? ?????69?
  • X????????????????X?????????????2m????????????
  • ?????????????????X?????????????2m?????????????

22
????????
?? 190µSv 0.14µSv 0.1µSv
?? 1100µSv 0.90µSv 0.5µSv
1.5 m
2.0 m
????? 6.6µSv/?
23
????????
  • ????????
  • ???????
  • ???????????
  • ??????????????????
  • ????????
  • ?????
  • ??????????
  • ????

24
????????????
25
PNAS 100, 13761-137661, 2003
26
  • ??????????????????????????
  • ?????
  • ??????????????????
  • ?????
  • ??????????????????????????????????

27
?????????????????????????
28
????????????????????????
????? 1050mSv
????? 50100mSv
??(mSv) ????? ?????
0.15 ??????
0.19 ????(???)
1.1 ????(???)
2 ???
2.4 ?????/?
5 ??????/3?
20 ??????/?
50 ??????/?
100 ????
29
  • 10100mSv?????????????????????????????

a ??????????? b ?????? c ?????? d ??????????? e ??
??????
??????????????????????????????????????????????????
???????
30
Lancet 363, 345-351, 2004
???? 2004?2?11?
31
  • ?????X????? (UNSCEAR Report 2000)
  • ??????????????X??????????????
  • ?????X????????????????
  • ?????????????????????

??
  • ??????????????????????????????

??
  • ???

32
? ??X?????/1000? ????? ???????
?? 1,477 (1,573) 3.2 (4.4) 7,587 (10,432)
????? 903 1.8 169
??? 1,254 1.5 2,049
??????? 565 1.3 431
????? 708 1.2 77
15???? 819 1.2 1,239
???CT?????????????????????????1???????????????????
????????CT????????????3.7???????CT?????3.7????????
???????????
33
??X?????????????
34
???????
  • ??????????????????????????????
  • 75???????????X???????????????????
  • ?????????????
  • ???????????
  • X??????????????????
  • X?????????????????
  • ??????????????????????50?????

35
??????????
  • ??????????????????????????
  • CT????????????????
  • ????????????????????????????

?? ???????1????
??????? 8.0 5.7
?????? 42.0 25.0
UNSCEAR REPORT 2000
36
?????????????
  • ????
  • ???????????
  • ????????????
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