Instruments for NPP's STPK-01 spectrometric complex

The spectrometric complex STPK-01 for maintenance of the discrete – continuous operative control of specific activity of iodine radio-nuclides (131J-135J) in a wide range of values of the coolant in the basic (first) circuit of the nuclear reactor VVER-1000

PURPOSE
The spectrometric complex STPK-01 is intended for maintenance of the discrete - continuous operative control of specific activity of iodine radio-nuclides (131J-135J) in a wide range of values of the coolant in the basic (first) circuit of the nuclear reactor VVER-1000, and also periodic control of specific activity of a number of  reference radio-nuclides important for an estimation of a technological condition of the coolant in the first circuit by means of gamma-spectrometry of high resolution.

STRUCTURE
  • block of detecting on the most clean germanium basis of the detector
  • electromachine coolant
  • protective screen for the block of detecting
  • software controlled mobile collimator with apertures of various size
  • digital multichannel analyzer
  • printer such as HP Laser jet 1300 A4
  • uninterrupted power source
  • system software
  • application software for control of modes of measurements, analysis, visualization, storage and documenting of the spectrometer information
  • technique of performance of measurements

CHARACTERISTICS
Dimension of ADC, of channels8192
Output of analysis resultsnot less, than 1 time per hour
Range of registered energies of the γ-emision, Kve60-3000
Registered nuclides131I, 135I, 24Na, 42K, 40K и  208Tl
Resolution of the spectrometer0,9 Kev for 122 Kev
Duration of the expositionAdjustable parameter
Error of determination 131÷135I, not more, %20
Cooling of semi-conducting block of detectingIs realized by the electric machine coolant.
Alternation changing of positions of the collimatorAutomatic
STPK-01 works uninterruptedly-

FEATURES
  • Possibility of an uninterrupted control of the activity of radio-nuclides in the first circuit coolant.
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