Laborator de Caracterizari Radiologice [LCR]

doru@nipne.ro

Tel: 021.404.23.00 (5029) / Fax: 021.457.44.40

Cuvinte cheie: masurare contaminare beta-gamma si contaminare superficiala, analize gamma spectometrice

  • Notificat CNCAN
    23-11-2016

    Certificat de desemnare nr. LI 04 - LCR/2016
    Descarca fisier

  • Laboratorul de Caracterizare Radiologica (LCR) al Departamentului Dezafectare Reactor (DDR) este parte componenta a Centrului de Management Dezafectari si Deseuri Radioactive (CMDDR). Activitatea Laboratorului de Caracterizari Radiologice (LCR) se desfasoara in conformitate cu procedurile de sistem, procedurile si instructiunile de lucru cuprinse in Manualul de Management Integrat pentru dezafectarea Reactorului Nuclear VVR-S (faza 2 si Faza 3 (Etapa1)) si DCNU (Faza 1), cod MMI-DEZ-01, revizia aplicabila, aprobat de CNCAN prin adresa nr. 26256/ 20.05.2013.

    Activitatea LCR:

    1. Caracterizarea radiologica a instalatiei si a spatiilor de lucru ale RN VVR-S, in conformitate cu planurile de caracterizare in prealabil elaborate
    2. Eliberarea de sub regimul de autorizare a materialelor si echipamentelor provenite din dezafectarea RN VVR-S
    3. Evacuarea deseurilor din zona supravegheata a RN VVR-S
    4. Caracterizarea radiologica a coletelor cu deseuri radioactive rezultate din dezafectarea RN VVR-S

    Tipuri de incercari (masurari) efectuate in cadrul LCR:

    1. Masurarea directa a contaminarii superficiale
    2. Masurarea indirecta a contaminarii beta-gama prin prelevare de probe pe frotiuri
    3. Analize gama spetrometrice utilizand sisteme cu detectori HPGe/NaI(Tl)

    Echipamente:

    a) Monitoare portabile de radiatie utilizate pentru masurarea contaminarii superficiale si a debitului de doza:
    • unitate de baza Eberline E-600 cu sonda tip SHP-380AB/ SHP-360/ SSPA-3/ SHP-210T/ SMART DETECTOR EXTENDER POLE;
    • unitate de baza Berthold UMo LB 123 cu sonda tip LB-1231/ LB-1238.

    b) Sistem gama spectrometric cu detector NaI(Tl) de la Ortec - utilizat in special pentru masurarile in-situ si evaluarea activitatii superficiale. Echipamentul de masurare consta din:
    • sonda de detectie, tip ScintiPack 296, cu preamplificator si inalta tensiune incorporate;
    • analizor multicanal portabil, tip DigiDART;
    • colimator de plumb;
    • soft de achizitie si analiza Maestro32.

    c) Sistem gama spectrometric dedicat masurarii in laborator cu detector HPGe utilizat fara castel de plumb, de la Ortec. Echipamentul de masurare consta din:
    • detector de germaniu hiperpur HPGe, model GMX50P4, transplanabil in tehnologia Pop Top, cu diametrul cristalului de 6.46 cm si lungimea de 7.5 cm, fereastra de Be cu grosime de 0.05 cm;
    • analizor multicanal portabil, model DigiDART;
    • soft de achizitie si analiza Maestro32, GammaVision32.

    d) Sistem gama spectrometric dedicat masurarii in laborator cu detector HPGe utilizat cu castel de plumb, de la Ortec. Echipamentul de masurare consta din:
    • detector de germaniu hiperpur HPGe, tip p, model GEM60P4-95, cu diametrul cristalului de 7.44 cm si lungimea de 7.36 cm;
    • analizor digital, model DSPEC jr.2.0;
    • castel de plumb;
    • soft de achizitie si analiza Maestro32, GammaVision32.

    e) Sistem gama spectrometric ISOCART de la Ortec, utilizat pentru masurarea butoaielor cu deseuri radioactive este cel mai versatil, prin abilitatea de a masura o varietate de containere cu deseuri. Echipamentul de masurare consta din:
    • detector de germaniu hiperpur HPGe, tip p, model GEM25P4, cu diametrul cristalului de 5.74 cm si lungimea de 5.22 cm;
    • analizor multicanal portabil, model DigiDART;
    • colimator de plumb cu lungimea de 20.3 cm si grosimea de 1.6 cm;
    • soft de achizitie si analiza Maestro32, Isotopic32.

    f) Sistem gama spectrometric ISOCART II de la Ortec, utilizat pentru masurarea butoaielor cu deseuri radioactive consta din:
    • detector de germaniu hiperpur HPGe, tip p, model GEM100P4-95-SMP, cu diametrul cristalului de 8.96 cm si lungimea de 8.35 cm;
    • analizor multicanal portabil, model DigiDART;
    • colimator de tungsten;
    • soft de achizitie si analiza Maestro32, Isotopic32.

    f) Sistem gama spectrometric ISOCART II de la Ortec, utilizat pentru masurarea butoaielor cu deseuri radioactive consta din:
    • detector de germaniu hiperpur HPGe, tip p, model GEM100P4-95-SMP, cu diametrul cristalului de 8.96 cm si lungimea de 8.35 cm;
    • analizor multicanal portabil, model DigiDART;
    • colimator de tungsten;
    • soft de achizitie si analiza Maestro32, Isotopic32.

    g) Sistem Segmented Gamma Scanner WS-1100, de la Canberra, dedicat masurarii coletelor cu deseuri radioactive. Echipamentul este complex avand un sistem mecanic care permite scanarea automata pe verticala a coletelor cu deseuri radioactive. Echipamentul consta din:
    • detector HPGe, tip p, model GC4020, cu diametrul cristalului de 6.1 cm si lungimea de 6.4 cm;
    • analizor digital, model DSA1000;
    • colimator de plumb, cu lungime totala de 36.5 cm, cu fanta rectangulara in partea din fata a detectorului, cu lungime de 14 cm si inaltime/latime de 3.6 cm;
    • soft de achizitie si analiza Genie2000, NDA2000, ISOCS.

    h) Monitor cu scintilatori plastici tip FHT3040utilizat pentru masurarea activitatii materialelor supuse eliberarii de sub regimul de autorizare. Echipamentul consta din:
    • camera de masurare paralelipipedica din profile de aluminiu (113x70x130 cm);
    • platforma de introducere a materialelor in incinta monitorului;
    • unitatea de detectie compusa din 4 detectori scintilatori plastici (100x50x10 cm), fotomultiplicatoare si divizoare de tensiune;
    • electronica de masurare FHT8000.

    i) Soft ETNA (Efficiency Transfer for Nuclide Activity measurements) utilizat pentru evaluarea factorilor de transfer a eficacitatilor si a factorilor de corectie pentru sumarea coincidentelor.

    j) Soft GESPECOR este un soft de simulare Monte Carlo cu o interfata prietenoasa si usor de utilizat pentru evaluarea eficacitatilor, efectelor de matrice si corectiilor de sumare a coincidentelor in spectrometria gama utilizand detector HPGe.

  • Uncertainty assessment in the free release measurement by gamma spectrometry of rotating waste drums

    D. Stanga, J. Suran, O. Sima, P. Kovar, D. Gurau, J. Solc

    accepted for publication in Applied Radiation and Isotopes

    Comparison of LabSOCS and GESPECOR codes used in gamma-ray spectrometry

    L. Done, L.C. Tugulan, D. Gurau, F. Dragolici, C. Alexandru

    accepted for publication in Applied Radiation and Isotopes

    Assessment of derived emission limits for radioactive effluents resulted from the decommissioning activities of the VVR-S nuclear research reactor

    C. Tuca, A. Stochioiu, M. Sahagia, D. Gurau, M. Dragusin

    accepted for publication in Journal of Environmental Radioactivity

    Decommissioning the IFIN-HH VVR-S nuclear research reactor dismantling the primary cooling circuit

    M. Dragusin, A. Zorliu, R. Deju, C.A. Dragolici, I. Mincu, D. Stanga, D. Gurau, C. Mustata, C. Petran, I. Stoian

    European Research Reactor Conference Proceeding, Bucharest, Romania, 19-23 April 2015, 549-558

    The use of chemical gel for decontamination during decommissioning of nuclear facilities

    D. Gurau, R. Deju

    Radiation Physics and Chemistry 106, 371-375, 2015

    A simple method for determining the activity of large-area beta sources constructed from anodized aluminum foils

    D. Stanga

    Applied Radiation and Isotopes, 87, 211-215, 2014

    Review of the principal mechanism of radon in the environment

    D. Gurau, D. Stanga, M. Dragusin

    Romanian Journal of Physics 59 (9-10), 904-911, 2014

    Radiation monitoring under emergency conditions

    M. Dragusin, D. Stanga, D. Gurau, E. Ionescu

    Romanian Journal of Physics 59 (9-10), 891-903, 2014

    Radioactive decontamination technique used in decommissioning of nuclear facilities

    D. Gurau, R. Deju

    Romanian Journal of Physics 59 (9-10), 912-919, 2014

    Analysis of radioactive effluents pipelines for contamination / activation

    I. Iorga, D. Gurau, O. Sima

    Romanian Reports in Physics 59 (9-10), 1043-1047, 2014

    Numerical modeling of large-area beta sources constructed from anodized-aluminum foils

    D. Stanga

    Applied Radiation and Isotopes, 70(9), 1955-1958, 2012

    A new approach in gamma-ray scanning of rotating drums containing radioactive waste

    D. Stanga, D. Gurau

    Applied Radiation and Isotopes 70 (9), 2149-2153, 2012

    Decommissioning of the VVR-S research reactor - Radiological characterization of the reactor block

    E. Ionescu, D. Gurau, D. Stanga, O.G. Duliu

    Romanian Reports in Physics 64 (2), 387-398, 2012

    Simulation studies of the response function of a radioactive waste assay system

    D. Gurau, O. Sima

    Applied Radiation and Isotopes 70 (1), 305-308, 2012

    The examination of source distribution in a large sample by Monte Carlo simulation

    D. Gurau, O. Sima

    Applied Radiation and Isotopes 70 (9), 2141-2143, 2012

    The response function of ISOCART (Ortec) gamma-ray spectrometry system using Monte Carlo simulations

    D. Gurau, O. Sima

    Romanian Reports in Physics 64 (1), 94-104, 2012

    A new model calculation of the peak efficiency for HPGe detectors used in assays of radioactive waste drums

    D. Stanga, D. Radu, O. Sima

    Applied Radiation and Isotopes 68 (7-8), 1418-1422, 2010

    Simulation of gamma-ray spectra for complex measurement systems using GEANT 3.21

    D. Radu, O. Sima

    Romanian Reports in Physics 62 (4), 744-749, 2010

    Transfer of detector efficiency calibration from a point source to other geometries using ETNA software

    D. Radu, D. Stanga, O. Sima

    Romanian Reports in Physics 62 (1), 57-64, 2010

    A method of efficiency calibration for disk sources in gamma-ray spectrometry

    D. Radu, D. Stanga, O. Sima

    Romanian Reports in Physics 61 (2), 203-213, 2009

    ETNA software used for efficiency transfer from a point source to other geometries

    D. Radu, D. Stanga, O. Sima

    Applied Radiation and Isotopes 67 (9), 1686-1690, 2009

Ultima actualizare: 19.08.2015