PEA 1840-80 pump and APEA 1840-80 electric driven pump based upon
APPLICATIONS:
APEA 1840-80 electric driven pump is intended to supply feed water from the deaerator vessel to the vapor generator of NPP 2006 power generating unit.
DESIGN FEATURES:
The pump meets all Safety Class-3 and Earthquake Resistance Level-II requirements based on NP-001-97 and NP-031-01 Gosatomnadzor safety regulations and is supposed to function during the 6-point SLE according to the МSК-64 scale.
Pump, filter and throttling device housings belong to C-group and meet all requirements of Gosatomnadzor safety standards and regulations.
The unit has been manufactured for use in the regions with moderate and cold climate with a temperature range from - 30 to + 55 °C)
DESIGN features:
Centrifugal, horizontal, barrel insert, four-stage pump comes with the first stage with a primary wheel;
Axial load affecting the pump rotor is absorbed by the balance piston and plain thrust bearing;
Pressure-lubricated friction bearings serve as rotor supports;
Mechanical seals are single mechanical face seals. the structure includes built-in heat exchangers (thermal barriers) and external heat exchangers to ensure face seals operation;
The pump structure allows its warm-up with feed water from the deaeration vessel before its startup as well as capability to discharge the fluids flown from the housing cavity;
The individual lubrication unit mounted on a separate frame is included;
Pump comes with a thermal and noise insulation set.
TECHNICAL PARAMETERS:
Capacity – 1840 m3/h,
Head – 910 m,
NPSH –15 m,
Performance – 84%,
Controlled fluid temperature – 164 C°,
Rotary speed – 2980 rpm.
