Nuclear Pumps: End Suction Pumps

Design Features

Codes & Specifications

Hydraulic Range

Applications

Documents

Design Features

Design Features of Hayward Tyler End Suction Pump Model

The N3 is an end suction, vertically split, single-stage pump. It has a back pull out design, with foot or centerline mounting arrangement, with a closed or semi-open impeller. It has a cantilever shaft/bearing arrangement designed for low stress/deflection and high bearing life, and is specifically designed for nuclear auxiliary and radwaste systems.

Back pull out assembly for ease of maintenance
Closed or semi-open impeller designs
Heavy duty radial and thrust bearings
Multiple single or mechanical seal options
Fabricated steel baseplate that can be seismically qualified

Codes & Specifications

Operating Data

	US	SI
Flow Range	Up to 3,000 USgpm	680 m3/hr
Total Head	Up to 500 ft	150 m
Speed	1500-3600 rpm	1500-3600 rpm

Codes and Compliances

ASME Section VIII and III including stamp (N, NS, NPT)
Nuclear Safety Related or Non-Safety related
Pressure Equipment Directive (PED)
10CFR21 and 10CFR50
ISO 9001
NQA-1
RCC-M and RCC-E
CAN/CSA-N285.0
Other international codes as required.

Hydraulic Range

Applications

Hayward Tyler End Suction Pumps are ideal for the following applications:

Safeguard Pumps

ASME Section III Class 2

Seal water injection pumps
Decay heat pumps (low pressure injection)
Reactor spray pumps
Class 2 pumps for any other service involving low NPSH or thermal shock applications