CNR, CNSA Series Single-Stage Axially Split Volute Casing Pumps - nempump.comnempump.com

CNR, CNSA Series Single-Stage Axially Split Volute Casing Pumps

ЦНРLow Pressure Emergency Core Cooling System (ECCS) Pumps:

Horizontal, centerline-supported, between-bearings, single-stage axially split volute casing centrifugal, with a double entry radial impeller, plain bearings and shaft sealing by means of mechanical seals.

Unified with respect to each other and differ only in the impeller diameter.

Pump make Equipment applications Technical data Safety class / Seismic stability category / Climatic version
Capacity, m3/h Head, m Type of drive & its parameters
CNR 800-230-1 Used as a residual heat removal (RHR) pump for injection of boric acid solution into the reactor coolant circuit with the purpose of essential cooling service of the fuel core following a scheduled reactor shutdown and emergency cooldown in the event of failure. 800 230 Electric motor n = 3000 rpm P nom. = 800 kW U = 6000 V 2/УХЛ4
CNSA 700-140-1 Used as a sprinkler system supply pump (containment spray pump) taking suction from the emergency boron storage tank to supply boric acid solution for spray nozzles of a sprinkler system to cool the air space of the safety shell (containment) in case of a significant malfunction. 700 140 Electric motor n = 3000 rpm P nom. = 500 kW U = 6000 V 2/УХЛ4

ЦНСАResidual Heat Removal Pumps

Horizontal centreline mounted, inducer multistage, barrel-casing centrifugal, with a withdrawable cartridge of ring-section type, plain bearings and shaft sealing by means of mechanical seals.

Pump make Equipment applications Technical data Safety class / Seismic stability category / Climatic version
Capacity, m3/h Head, m Type of drive & its parameters
CNSA 750-140 Designed for injection of boric acid solution into the reactor coolant circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated, and to cool down the fuel core following a scheduled reactor shutdown. 750 140 Electric motor n = 1500 rpm P nom. = 500 kW U = 6000 V 2/I/М4 ТВ4 М4
CNSA 750-140-1
CNSA 750-140-2
CNSA 750-140а Designed for injection of boric acid solution into the reactor coolant circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated, and to cool down the fuel core following a scheduled reactor shutdown. 800 150 Electric motor n = 1500 rpm P nom. = 630 kW U = 6000 V 2/I/М4 ТВ4УХЛ4 М4
CNSA 750-140а-1
CNSA 750-140а-2 Electric motor n = 1500 rpm P nom. = 630 kW U = 10000 V
CNSA 750-140а-3
CNSA 750-140а-4 Electric motor n = 1500 rpm P nom. = 630 kW U = 6000 V

СТК

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