① O le BIN (Background Identification of Normal) e le amanaiaina le tekinolosi
② MCA multispectrum su'esu'e, uiga SIGMA fa'afuainumera algorithm
③ NORM galuega (40K) Vave fa'ailoga i le va o nuclides masani ma fa'alenatura (eg40K,232T)
④ Galuega e iloa ai le nuclide (fa'atasi ai ma su'esu'ega sodium iodide / faitalia)
⑤ O le tuʻufaʻatasia o le sodium iodide detector ma le MCA multichannel energy spectrometer analyzer e mafai ona faʻamaonia saʻo le va o nuclides faafomaʻi, nuclides fale gaosimea, ma radionuclides masani.
Nuclide faanatura | 40K,226Ra,232Th |
Nuclide pisinisi | 241a'u,137Cs,60Co,57Co,22Na,133Ba,54Mn,88Y |
Nuclides faafomai | 131a'u,201Tl,203Hg,18F,99mTc,99Mo,192Ir |
Mea faaniukilia faapitoa | 57Co,152EU,238U |
⑥ Fa'ata'ita'iga saosaoa (sili ona vave: 200ms)
igoa ole poloketi | Fa'amatalaga fa'amau |
Ituaiga o siaki | Pa'u palasitika scintillator + maualalo le pisa photomultiplier paipa |
Su'e leo | 5,10,15 faitalia ma su'esu'ega lua (faitotoa faaletonu lua su'esu'e) |
Tulaga maualuga pasi | 106cps |
laina malosi | 25keV~3MeV |
maaleale | m5000cps / (Sv / h) (10 L, aiga137Cs) |
Su'esu'ega tapula'a pito i lalo | Malosiaga e iloa ai le vevela i luga aʻe o le tua o le 5nSv / h |
Fa'atonu tasi, o le paipa neutron |
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Fa'ailoaina o le dinnuclide faitalia |
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1. Fa'atonu le iloa lelei (AB)
A. Fa'atonu lelei le su'esu'eina o le faiga e mata'ituina ai tagata savavali
puna leitio | Le malosi autukeV | Fa'atonu fa'amautu lelei | Ole fua ole fua ile 1.5m / (nSv.h-1/MBq | |
s-1/MBq | s-1/(nSv.h-1) | |||
241Am | 60 | ≥220 | ≥94 | 2.3 |
57Co | 122,136 | ≥840 | ≥90 | 9.3 |
137Cs | 662 | ≥960 | ≥23 | 42 |
60Co | 1173,1332 | ≥1800 | ≥11 | 160 |
133Ba | 3,181,302,356 | ≥1680 | ≥73 | 23 |
sasaa:
1. O le 252Cf neutron su'esu'ega puna'oa fa'atasi ma se puna malosi neutron o 12000 / s (1 ± 20%) o lo'o tu'uina i le nofoaga o le fa'asinomaga fa'amatalaga.
2. Ole fua ole numera ole neutron e tatau ona fetaui ma le mana'oga ole fua faatatau ole> 100 (1 ± 20%) / s
Fa'ata'ita'i lelei le fa'aogaina o le B-row package system mata'ituina
puna leitio | Le malosi autukeV | Fa'atonu fa'amautu lelei | Ole fua ole fua ile 1.5m / (nSv.h-1/MBq | |
s-1/MBq | s-1/(nSv.h-1) | |||
241Am | 59.5 | ≥480 | ≥92 | 5.2 |
57Co | 122,136 | ≥2400 | ≥114 | 21 |
137Cs | 662 | ≥2640 | ≥28 | 95 |
60Co | 1173,1332 | ≥5760 | ≥16 | 360 |
133Ba | 3,181,302,356 | ≥4560 | ≥88 | 52 |
2. Ma'ale'ale le iloa
Faiga e mata'ituina ai tagata savavali ma le fa'aogaina o pusa laina
Tagata savali: Fa'aletonu e maua f 90% saoasaoa v=1.2m/s
Laina afifi: su'esu'e avanoa f 90% saoasaoa v=1m/s
puna leitio | Gaoioiga po'o uiga lelei |
137Cs | 0.08MBq |
60Co | 0.02MBq |
241Am | 2.27MBq |
3. Faʻalavelave faʻalavelave faʻatinoga o le neutron detector
Pe a maua e se puna 60Co se fua fua faatatau i le ogatotonu geometric o le neutron detector luga o le faiga mataʻituina, sili atu i le 120 Sv / h, e le tatau i le faiga mataʻituina se faʻailoga neutron.
4. Fua'iga fa'ailo sese: 0.01% (, neutron)
Fa'amata'u o se fa'ailo fa'ailoilo e mafua mai i mea e le fa'aeletonia po'o le SNM
5. uiga ova
Pe a oʻo i le maualuga o le fua o le fua o le suʻesuʻega e sili atu i le 120 Sv / h, e tatau i le faiga o le mataʻituina ona faʻamautu le tulaga faʻailo ma toe foʻi i le tulaga pito i tua, ma o le taimi faʻamalolo e itiiti ifo i le 60s.
6. Fa'alogoga tumau
I totonu ole va'aiga ole vaega ole su'esu'ega
Tagata savali ± 25% Fa'aputu Laina ± 25%
Milarm fua
I se siosiomaga mautu:
Fa'aoga le masini avanoa, 10000 taimi, fua fa'ailoga sese 1
A aunoa ma le fa'aogaina o le masini fa'aoga, ole fua fa'ailoga sese ma le fa'amatalaga sese e fa'aoga tasi ile 12h
γ Tali o le Radiation
Fa'a 50 taimi, fa'ailoga 49 taimi
Ita
E sili atu i le 100 v S / h, o se faʻailo maualuga o le radiation e tuʻuina atu ma aveese i totonu ole 1 minute pe a maeʻa le puna.
Fa'aliga neutron fa'aoso fa'avevela
E leai se fa'ailo neutron e fa'aosoina pe a o'o atu le fua ole fua ole γ-ray ile 100 Sv/h
Aafiaga i tua
A lava le tele o suiga i tua e mafua ai se suiga tele i le faʻalavelave faʻafuaseʻi, e tatau i le faiga o le mataʻituina ona tuʻuina atu se lapataiga vave
Nuclide fa'ailoaina
Nuclide faanatura | 40K,226Ra,232Th |
Nuclide pisinisi | 241a'u,137Cs,60Co,57Co,22Na,133Ba,54Mn,88Y |
Nuclides faafomai | 131a'u,201Tl,203Hg,18F,99mTc,99Mo,192Ir |
Mea faaniukilia faapitoa | 57Co,152EU,238U |
Fa'aaliga: Fa'ailoga Nuclide ma le su'esu'eina o neutron e filifili, ae le o le faiga masani