CNA

High Pressure Emergency Core Cooling System (ECCS) Pumps

Horizontal centreline mounted, 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
CNA 150-60 Used as a charging pump for injection of boric acid solution into the reactor coolant system (primary circuit) during a failure at the NPS units equipped with VVER-91 pressurized water reactor 150 650 Electric motor n = 2973 rpm P nom. = 630 kW U = 6000 V 2З/I/М4
CN 150-60-1 Designed for injection of boric acid solution into the reactor coolant system:

– to replenish liquid losses in the primary circuit (as a volume control pump) and to remove the fission product decay heat from the reactor core following a loss-of-coolant accident (as a result of rupture of small pipes of up to 100 mm inclusive in diameter) as a charging pump;

– to make up the reactor coolant circuit in the emergency situation associated with a loss-of-coolant accident (leakage through rupture of pipes of more than 100 mm in diameter) as a safety injection pump;

– to maintain the reactor core in the subcritical condition (as a RHR pump)

153 708 Electric motor n = 2973 rpm P nom. = 630 kW U = 6000 V 2/I/ТВ4
CNA 150-60-2 Designed for injection of boric acid solution into the primary circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated 150 650 Electric motor n = 2979 rpm P nom. = 630 kW U = 10000 V 2/I/УХЛ4
CNA 150-60-3 Designed for injection of boric acid solution into the primary circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated 150 650 Electric motor n = 3000 rpm P nom. = 630 kW U = 10000 V 2/I/УХЛ4
CNA 150-60-4 Designed for injection of boric acid solution into the primary circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated 150 650 Electric motor n = 3000 rpm P nom. = 630 kW U = 6000 V 2/I/М4
CNA 150-110-2 Designed for injection of boric acid solution from the emergency storage tank into the primary circuit of the NPS power units equipped with VVER-1000 PWR during cooldown of the reactor coolant system following a failure 150 980 Electric motor n = 3000 rpm P nom. = 800 kW U = 6000 V 2/I/УХЛ4

NPS

Design by "TriA"