① The BIN (Boitsebiso ba Background Identification of Normal) bo iphapanyetsa theknoloji
② MCA multispectrum analyzer, tšobotsi ea SIGMA lipalo algorithm
③ mosebetsi oa NORM (40K) Phapang ka potlako lipakeng tsa li-nuclide tse tloaelehileng tsa maiketsetso le tsa tlhaho (mohlala40K232T）
④ Ts'ebetso ea tlhokomeliso ea Nuclide (e nang le probe ea sodium iodide / boikhethelo)
⑤ Ho kopanya sesebelisoa sa sodium iodide le MCA multichannel energy spectrometer analyzer ho ka khetholla ka nepo lipakeng tsa li-nuclide tsa bongaka, li-nuclide tsa indasteri le li-radionuclide tsa tlhaho.
| Nuclide ea tlhaho | 40K226Ra,232Th |
| Nuclide ea indasteri | 241Ke,137Cs60Co,57Co,22Na,133Ba,54Mong,88Y |
| Li-nuclide tsa bongaka | 131ke,201Tl,203Hg,18F99mTc,99Mo,192Ir |
| Lisebelisoa tse khethehileng tsa nyutlelie | 57Co,152EU,238U |
⑥ Sampling ea lebelo le holimo (ka potlako: 200ms)
| lebitso la morero | Boitsebiso ba parameter |
| Mefuta ea li-detectors | Plate scintillator ea polasetiki + lerata le tlase la photomultiplier tube |
| Molumo oa detector | 5,10,15 ea boikhethelo e nang le li-probe tse peli (probe ea kamehla ea mamati) |
| Sekhahla se phahameng sa ho pasa | 106cps |
| sebaka sa matla | 25kV ~ 3MeV |
| kutloelo-bohloko | m5000cps / (Sv / h) (10 L, mong ka137Cs) |
| Moeli o tlase oa ho lemoha | Bokhoni ba ho bona mahlaseli ka holimo ho semelo sa 5nSv / h |
| Ho ea ka khetho, tube ea neutron |
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| Kamohelo ea khetho ea dinnuclide |
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1. Ts'ebetso e tsitsitseng ea ho lemoha (AB)
A. Ts'ebetso e tsitsitseng ea ho lemoha ha mokhoa oa ho beha maoto leihlo
| mohloli oa radioactive | Matla a ka sehloohongkev | Katleho e tsitsitseng ea ho lemoha | Sekhahla sa lethal dose ho 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 |
tšela:
1. Mohloli o tloaelehileng oa tlhahlobo ea 252Cf neutron o nang le mohloli o matla oa nyutrone oa 12000 / s (1 ± 20%) o behiloe sebakeng sa sebaka sa boitsebiso ba detector.
2. Sekhahla sa palo ea neutron se tla kopana le tlhoko ea sekhahla sa ho bala sa> 100 (1 ± 20%) / s.
Ts'ebetso e tsitsitseng ea ho lekola sephutheloana sa B-row
| mohloli oa radioactive | Matla a ka sehloohongkev | Katleho e tsitsitseng ea ho lemoha | Sekhahla sa lethal dose ho 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. Boikutlo ba ho lemoha
Sistimi ea ho lekola ba tsamaeang ka maoto le sistimi ea ho beha leihlo liphutheloana
Motho ea tsamaeang ka maoto: Monyetla oa ho fumanoa f 90% lebelo v=1.2m/s
Sephutheloana sa mela: probability probability f 90% speed v=1m / s
| mohloli oa radioactive | Ketso kapa boleng |
| 137Cs | 0.08MBq |
| 60Co | 0.02MBq |
| 241Am | 2.27MBq |
3. Ts'ebetso e khahlanong le tšitiso ea sesebelisoa sa neutron
Ha mohloli oa 60Co o hlahisa sekhahla sa lethal dose setsing sa jiometri sa "neutron detector" holim'a sistimi ea ho shebella, e kholo ho feta 120 Sv / h, sistimi ea ho beha leihlo ha ea lokela ho tsosa alamo ea neutron.
4. Sekhahla sa alamo ea bohata: 0.01% (, neutron)
Monyetla oa alamo ea sistimi ea ho lemoha e bakoang ke lintho tse se nang radioactive kapa tseo e seng tsa SNM
5. litšobotsi tse feteletseng
Ha tekanyo ea lethal dose ea detector e feta 120 Sv / h, sisteme ea ho beha leihlo e tla boloka boemo ba alamo ebe e khutlela sebakeng se ka morao, mme nako ea tokollo ea alamo e ka tlase ho 60s.
6. Ho tsitsa ha maikutlo
Ka har'a sebaka sa ho lemoha
Batsamai ka maoto ± 25% Line Pack ± 25%
Sekhahla sa Misalarm
Sebakeng se tsitsitseng:
Sebelisa sensor ea sebaka, makhetlo a 10000, sekhahla sa alamo ea bohata 1
Ntle le ho sebelisa sensor e lutseng, sekhahla sa alamo ea bohata le sekhahla sa ho se tsebe hantle se sebelisoa hang ka nako ea 12h
γ Karabelo ea Mahlaseli
Sebelisa makhetlo a 50, alamo makhetlo a 49
Halefile
Ho feta 100 v S / h, alamo e phahameng ea mahlaseli e hlahisoa ebe e tlosoa ka hare ho 1min ka mor'a hore mohloli o tlohe.
Alamo ea neutron e bakoang ke mahlaseli
Ha ho alamo ea neutron e hlahisoang ha sekhahla sa lethal dose ea γ-ray se fihla ho 100 Sv / h.
Tšusumetso e ka morao
Ha phetoho ea bokamorao e le kholo ho lekana ho baka phetoho e kholo monyetla oa alamo, sistimi ea ho beha leihlo e tla fana ka tlhokomeliso.
Kemohelo ea Nuclide
| Nuclide ea tlhaho | 40K226Ra,232Th |
| Nuclide ea indasteri | 241Ke,137Cs60Co,57Co,22Na,133Ba,54Mong,88Y |
| Li-nuclide tsa bongaka | 131ke,201Tl,203Hg,18F99mTc,99Mo,192Ir |
| Lisebelisoa tse khethehileng tsa nyutlelie | 57Co,152EU,238U |
Tlhokomeliso: Boitsebiso ba Nuclide le nyutrone ke khetho ea boikhethelo, eseng tsamaisong e tloaelehileng
Setšoantšo sa 1. Tlhokomelo ea mahlaseli a liphutheloana le ba tsamaeang ka maoto
