Main Basic information of the centre Certification rus/eng
Â-213

       The installation has been included in the State Instrumentation List.
       Registration number 29218-05.

Designer and manufacturer

       JSC «EREC»

Purpose and field of application

       The calibration instrumentation installation UPR-50 is designed for testing, checking, calibration of flowmeters and counters of different type and configuration.

Description

       The installation is a closed recirculation circuit made of corrosion-resisting tubes. The recirculation circuit has two loops:
  • the operating loop involving a receiver, a unit of standard flowmeters, a test table, a pipeline with a multipurpose valve;
  • the bypass loop involving a receiver and bypass pipeline with a multipurpose valve.
                            Fluid flow in the circuit is produced by two packless centrifugal pumps CEN 148.
       Circuit pressure is set up and maintained by a pressure stabilizer with a steam blanket which is produced by water evaporation on heating by means of a built-in heater.
       Direct connection of the pressure stabilizer and receiver into a single unit ensures pressure leveling in the installation circuit. Heating and temperature stabilization in the circuit is provided with a two-sectional electrical heater.
       Function of the installation is to check indications of standard and tested (checked or calibrated) flowmeters (counters).
       Acquisition and processing of measured flow (volume) data, issue of protocols and their storage is ensured by DAS system.
       In 2008 a new core simulator for substantiation of measures to improve the reliability of the ball flow flowmeters ShADR 32M at the NPP was made ready at the UPR-50 plant in the context of the "Program for nuclear, radiation, technical and fire safety during exploitation of the nuclear power plants for the period from 01.01.2008 to 31.12.2008".
       The core simulator is a parallel two modules of the FRC RBMK-1000 (a multipurpose valve, ShADR) (photo). 
       The reactor-plant is equipped with additional measuring instrumentation:
  • 2 MIT - magnetic-induction transformer; 
  • 2 accelerometers of AP63;
  • 3 sensing elements of pressure fluctuations;
  • 3 sensing elements of steam content.

       This installation will identify the boundary of the cavitations’ boiling up at the at the multipurpose valve inlet entrance. It will fix limits of the thermo physical parameters of the coolant, which satisfy the safety operation of the ShADR.
       In 2006-2008 the work of approval of the ball flowmeters with the hydrodynamic suspension (ShRGP) at operating parameters of VVER-1000 reactor coolant was carried out at the UPR-50 installation. Characterizations of the ball flow converters ShRTK as well as the modernized ball sensing devices of flow rate ShADR, as well as other types of converters at operating parameters of RBMK reactor coolant, were determined.


– the receiver; 2 – the standard flowmeter; 3 – the core simulator; 4 – the multipurpose valve; 5 – the bypass pipeline; 6 – the electrical pump; 7 – the pressure stabilizer; 8 – the electrical heater; 9 – the circuit electrical heater (two-sectional).
P – pressure; DP – pressure difference (Metran-22-DI); T – temperature (TXK); F - flow-rate through the ShADR+MIP; PS - pressure fluctuation (DPD-72.000); G – vibrations and frame’s sound measuring (1PA-40); X - steam quality (LPS); TW – flow velocity (TPS).

 Basic diagram of the calibration instrumentation installation UPR-50

MAIN TECHNICAL CHARACTERISTICS

Medium, measured
Temperature of measured medium, °Ń
Internal diameter of the checked counter, Dy, mm
Flow range, m3/h
Allowable ratio error range of the installation, %, equals to
Pressure of measured medium, MPa, al the most
Operation conditions:
      ambient air temperature, °Ń
      atmospheric pressure, kPa
      relative humidity, %
Supply voltage of the installation, V
Consumed power, kW, at the most


water against GOST R 51232
20–300
15–50
5,0–55
±0,8
12,2

5–50
84–106,7
30–80
380
170