Doza RPOGRESS Manual do utilizador - Página 4

Procurar online ou descarregar pdf Manual do utilizador para Instrumentos de medição Doza RPOGRESS. Doza RPOGRESS 14 páginas. Spectrometric complex for measurement of activity of alpha-, beta-, and gamma-emitting radionuclides

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1.2.13 Gamma-spectrometer withstands sinusoidal vibrations in the frequency range from 10 to

55 Hz with displacement amplitude 0.35 mm.

1.2.14 Casings of the gamma-spectrometer ensure protection against penetration of solid

objects and water in accordance with the IP23.

1.2.15 Gamma-spectrometer is proof against electromagnetic interference in compliance with

the IEC 1000-4-8-93, IEC 1000-4-9-93, IEC 61000-3-2-95, IEC 610003-3-94, IEC 61000-4-2-95,

IEC 61000-4-3:2006, IEC 61000-4-4-95, IEC 61000-4-5-95, IEC 61000-4-6-96, IEC 61000-4-11-94,

IEC 61000-4-12-96, IEC 61000-4-13:2002, IEC 61000-4-14-99, IEC 61000-4-28-99, design group III,

performance criterion А.

Electromagnetic interference does not cause false triggering and restart of the measurement

channel.

1.2.16 With regard to seismic stability the gamma-spectrometer stability against earthquake

intensity 7 according to the MSK-64 scale at 30 m relative to the grade level.

1.2.17 With regard to protection against electric shock gamma-spectrometer is classified as

class I according to the IEC 61010-1:2001.

1.2.18 With regard to fire-prevention characteristics gamma-spectrometer complies with fire

probability of no more than 10

1.2.19 Gamma-spectrometer withstands the exposure to decontaminating solutions:

first solution - caustic soda 50 - 60 g/l, potassium permanganate 5 - 10 g/l;

second solution - oxalic acid 20 - 40 g/l;

third solution – detergents;

5 % solution of the citric acid in the rectified ethyl alcohol for handling electronic devices.

1.2.20 Overall dimensions of the shielding SZG-1 .......................... diameter 275×677 mm.

1.2.21 Overall dimensions of the shielding SZG-3 .......................... diameter 310×700 mm.

1.2.22 Weight of the shielding SZG-1............................................................ 100 kg.

1.2.23 Weight of the shielding SZG-3............................................................. 110 kg.

1.3 Configuration

1.3.1 Gamma-spectrometer is a stationary unit with scintillation detector unit, personal

computer and software «Progress» intended for control in all modes of operation and all steps of the

measurement process, for processing of measurement data and recording results.

1.3.2 Gamma-spectrometer includes: scintillation detector unit based on sodium iodide crystal

NaI(Tl) of different dimensions, power supply unit and pulse amplifier, analog-to-digital converter

(ADC) and lead shielding block for shielding of natural background radiation. As a rule, power supply

units and pulse amplifiers as well as ADC are placed directly in the detector block. Different beakers

and dishes are used for measurement of counting samples.

1.3.3 Combined

for energy calibration and performing routing performance testing. The source represents a 1 L

Marinelli beaker.

1.4 Design and operation

1.4.1 Mode of operation of the gamma-spectrometer is based on acquisition of raw spectrum of

pulses from detector, which detects radiation emitted from the counting sample exposed under fixed

measurement conditions. Activity of a radionuclide in the sample is determined by means of

spectrogram processing in the personal computer using the «Progress» software.

1.4.2 The «Progress» software allows to control the gamma-spectrometer operation, analyze

spectrogram and identify radionuclides, determine activity of corresponding nuclides in the sample and

compute the measurement error and register measurement results.

-6

-1

year

137

Cs+

K calibration source comes with gamma-spectrometer which is used

FVKM.412131.002-03RE