Special-purpose pumps

Special purpose pumps are applied in special systems of NPP units with reactors VVER-1000 PBMK (coolant makeup system, aftercooling system, sprin¬kler system, fire fighting system).

Special purpose pumps are centrifugal, multi stage or with double-entry impeller, horizontal, with forged or cast casing. nas2 Casing material is austenitic steel. Electric motor is used as a pump drive. Motor and pump drive are connected by gear-type or flexible plate coupling.

Rotor of pump shaft is sealed by mechanical end seal. Axial force relief is compensated in most cases by hydraulic discharging device.

Specification
Pump type Capacity,
м3/hour		 Head,
m		 Rotational speed
(synchr.),
rpm		 Morot power,
kW		 Pump overall
dimensions,
mm		 Pump weight,
kg
ЦН 50-135 50 1320 9000 500 5145 х 1511 х 1345 10300
ЦН 60-180 60 1780 9000 800 5355 х 1511 х 1465 11030
АЦНА 25-180 25 1820 6000 400 4717 х 1565 x 1325 6300
АЦНА 60-185 60 1850 3000 800 4925 х 1500 х 1435 8390
АЦНА 60-185-1 60* 1613* 3000 800 4865 х 1360 х 1465 8520
ЦНА 125-80 125* 80* 3000 55 2380 х 1362 х 1710 1800
ЦНА 200-180 160* 145* 3000 110 2655 х 850 х 1650 2350
АЦНА 400-100 400 100 3000 315 3380 х 1350 х 1335 3115
АЦНА 400-100Е 300 80 2970 90 2650 х 1035 х 1205 2530
АЦНА 400-100-1 400* 90* 3000 160 2715 х 1200 х 1200 3430
Д800-56 800 56 1500 200 3090 х 960 х 918 3250
АЦНА 50-90 48,2 930 2976 315 3928 х 1285 х 1075 4500
ЦНСА 800-90 800 90 1500 250 1390 х 1125 х 1000 1800

* – at current frequency 49 Hz