① Lub BIN (Tom Qab Kev Qhia Txog Tus Kheej Li Cas) keeb kwm yav dhau tsis quav ntsej cov thev naus laus zis
② MCA multispectrum analyzer, tus yam ntxwv SIGMA statistical algorithm
③ NORM muaj nuj nqi (40K) Ceev qhov txawv ntawm cov khoom siv dag zog thiab ntuj nuclides (piv txwv li40K,232Th)
④ Nuclide paub muaj nuj nqi (nrog sodium iodide sojntsuam / yeem)
⑤ Kev sib txuas ntawm sodium iodide detector thiab MCA multichannel zog spectrometer analyzer tuaj yeem paub qhov txawv ntawm cov nuclides kho mob, muaj nuclides, thiab ntuj radionuclides
| Ntuj nuclide | 40K,226Ra,232Th |
| Muaj nuclide | 241Am,137Cs,60Co.,57Co.,22Na,133Ba,54Mn,88Y |
| Kev kho mob nuclides | 131kuv,201Tl,203Hg,18F ,99m uaTc,99Mo,192Ir |
| Cov ntaub ntawv tshwj xeeb nuclear | 57Co.,152Eu,238U |
⑥ High-speed sampling (ceev tshaj: 200ms)
| npe project | Cov ntaub ntawv Parameter |
| Hom kev ntes | Phaj yas scintillator + tsis tshua muaj suab nrov photomultiplier raj |
| Ntes ntim | 5,10,15 yeem nrog dual sojntsuam (qhov rooj default dual sojntsuam) |
| Qhov siab kawg nkaus | 106cps ua |
| lub zog ntau yam | 25 keV ~ 3MeV |
| rhiab heev | m5000cps / (Sv / h) (10 L, kwv tij137Cs) |
| Kev kuaj pom qis dua | Muaj peev xwm txheeb xyuas cov hluav taws xob saum toj kawg nkaus ntawm 5nSv / h |
| Xaiv ib qho, lub raj neutron |
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| Optional dinnuclide lees paub |
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1. Static detection efficiency (AB)
A. Static detection efficiency ntawm cov neeg taug kev saib xyuas qhov system
| radioactive qhov chaw | Lub zog lojkev | Static detection efficiency | Dose npaum li cas ntawm 1.5m / (nSv.h-1/MBq | |
| s-1/MBq | s-1/(nSv.h-1) | |||
| 241Am | 60 | ≥220 | ≥94 | 2.3 |
| 57Co | 122, 136 ib | ≥840 | ≥90 | 9.3 |
| 137Cs | 662 ib | ≥960 | ≥ 23 | 42 |
| 60Co | 1173, 1332 ib | ≥1800 | ≥11 | 160 |
| 133Ba | 3, 181, 302, 356 | ≥1680 | ≥73 | 23 |
ncuav:
1. Lub 252Cf neutron standard test qhov chaw nrog ib tug muaj zog neutron qhov chaw ntawm 12000 / s (1 ± 20%) yog muab tso rau ntawm qhov chaw ntawm lub detector reference point
2. Tus lej suav neutron yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm tus lej suav ntawm> 100 (1 ± 20%) / s
Static detection efficiency ntawm B-kab pob xyuas qhov system
| radioactive qhov chaw | Lub zog lojkev | Static detection efficiency | Dose npaum li cas ntawm 1.5m / (nSv.h-1/MBq | |
| s-1/MBq | s-1/(nSv.h-1) | |||
| 241Am | 59.5 ib | ≥480 | ≥92 | 5.2 |
| 57Co | 122, 136 ib | ≥2400 | ≥114 | 21 |
| 137Cs | 662 ib | ≥2640 | ≥ 28 | 95 |
| 60Co | 1173, 1332 ib | ≥5760 | ≥16 | 360 |
| 133 Ib | 3, 181, 302, 356 | ≥4560 | ≥88 | 52 |
2. Kev soj ntsuam rhiab heev
Cov neeg taug kev saib xyuas qhov system thiab kab pob saib xyuas qhov system
Cov neeg taug kev: Kev kuaj pom qhov tshwm sim f 90% ceev v = 1.2m / s
Kab pob: sojntsuam qhov tshwm sim f 90% ceev v = 1m / s
| radioactive qhov chaw | Kev ua haujlwm lossis kev ua tau zoo |
| 137Cs | 0.08mb qw |
| 60Co | 0.02mb qw |
| 241Am | 2.27mb qw |
3. Kev tiv thaiv kev cuam tshuam kev ua haujlwm ntawm cov khoom siv neutron
Thaum 60Co qhov chaw tsim cov koob tshuaj ntawm qhov chaw geometric ntawm neutron detector nto ntawm qhov kev saib xyuas, ntau dua 120 Sv / h, kev saib xyuas yuav tsum tsis txhob ua rau lub tswb nrov neutron.
4. Lub tswb tsis raug: 0.01% (, neutron)
Qhov tshwm sim ntawm kev kuaj pom lub tswb tshwm sim los ntawm cov khoom tsis muaj hluav taws xob lossis tsis yog SNM
5. overload yam ntxwv
Thaum lub ntsuas qhov ntsuas qhov ntsuas qhov ntsuas yog> 120 Sv / h, lub kaw lus saib xyuas yuav tsum tswj lub tswb lub xeev thiab rov qab mus rau lub xeev keeb kwm yav dhau, thiab lub sijhawm tswb tso tawm tsawg dua 60s.
6. Kev xav tsis sib xws
Nyob rau hauv qhov ntau ntawm qhov chaw nrhiav pom
Cov neeg taug kev ± 25% Kab Pob ± 25%
Misalarm tus nqi
Nyob rau hauv ib puag ncig ruaj khov:
Siv qhov chaw sensor, 10000 zaug, lub tswb tsis tseeb 1
Tsis siv lub sensor nyob, lub tswb tsis tseeb thiab tus nqi tsis raug siv ib zaug hauv 12h
γ Radiation teb
Ua 50 zaug, tswb 49 zaug
Qhov txawv
Tshaj 100 v S / h, lub tswb hluav taws xob siab tshaj tawm thiab tshem tawm tsis pub dhau 1min tom qab qhov chaw tawm
Radiation-induced neutron tswb
Tsis muaj lub tswb neutron tshwm sim thaum qhov koob tshuaj ntawm γ-duab tshav nce mus txog 100 Sv / h
keeb kwm yav dhau
Thaum qhov kev hloov pauv keeb kwm yav dhau los loj txaus los ua kom muaj kev hloov pauv loj hauv lub tswb tshwm sim, lub kaw lus saib xyuas yuav tsum tshaj tawm ceeb toom.
Nuclide paub
| Ntuj nuclide | 40K,226Ra,232Th |
| Muaj nuclide | 241Am,137Cs,60Co.,57Co.,22Na,133Ba,54Mn,88Y |
| Kev kho mob nuclides | 131kuv,201Tl,203Hg,18F ,99m uaTc,99Mo,192Ir |
| Cov ntaub ntawv tshwj xeeb nuclear | 57Co.,152Eu,238U |
Nco tseg: Kev txheeb xyuas Nuclide thiab kev kuaj pom ntawm neutron yog xaiv tau, tsis yog nyob rau hauv tus qauv txheej txheem
Daim duab 1. Pob thiab cov neeg taug kev taug kev hluav taws xob saib xyuas
