Nuclear

Nuclear New Build

Proud Gold Sponsor of the 2025 World Nuclear Exhibition

Gold Sponsors of WNE 2025

Join Celeros FT this November in Paris as a proud Gold Sponsor of the World Nuclear Exhibition! Visit us at Stand G133 and stay tuned for exciting announcements on our workshops at the event!

Nuclear Stock Image

Overview

Celeros Flow Technology’s pumps and valves have been at the heart of many of the world’s larger nuclear power reactors (above 1000MWe), for more than 60 years. Our safety critical pumps and valves can be found in 65% of global nuclear power reactors, both Pressurized Water Reactors (PWRs), Pressurized Heavy-Water reactors (PHWRs) and Boiling Water Reactors (BWRs).

Celeros FT engineers have a wealth of knowledge and expertise in the nuclear industry and so understand the importance of safety in the operation of nuclear power stations. Whether the equipment is designed for the nuclear island or the conventional island, compliance with the industry safety standards is paramount, for both our pump and valve equipment.

The robust, reliable, safety-critical nuclear Class 1-3 pumps and valves, manufactured in our ASME / RCC-M certified facilities include reactor coolant pumps, safety injection pumps, charging pumps, residual heat removal pumps, cooling water pumps, containment spray pumps, boric acid injection pumps, control rod drive pumps, feedwater pumps, reactor coolant valves and sampling valves.

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Typical Pressurized Water Reactor (PWR) Diagram

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Pumps
Untitled design 1

Nuclear Containment Spray Pump - CUP-VS1

A containment spray pump plays a crucial role in minimizing radioactive material leakage from the containment vessel during emergency situations, such as a loss-of-coolant accident. At the time of such accident the pump sprays boric acid water into the vessel and eliminate contamination of the fissionable material.

The CUP-VS1 Containment Spray Pump reduces radioactive material leakage during emergencies, such as a loss-of-coolant accident. It sprays boric acid water to suppress contamination and maintain safety. The vertical turbine pump adheres to API 610 and API 682 standards, offering high reliability, low NPSH capabilities, and various material options for different fluids. Its design eliminates the need for a suction barrel, simplifying maintenance and ensuring adaptability to diverse nuclear cooling applications. With capacities up to 31,000 USgpm and temperatures up to 402°F, it provides robust performance for containment systems in nuclear facilities.

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Pumps
Safety Injection Pump

Nuclear Safety Injection Pump

A nuclear safety injection pump is an essential part of a nuclear reactor's Emergency Core Cooling System (ECCS). Its main role is to deliver coolant to the reactor core during emergencies, such as a loss-of-coolant accident (LOCA). This process is crucial for controlling the core's temperature and preventing it from overheating, which could otherwise result in a meltdown.

Essential to the Emergency Core Cooling System, the Safety Injection Pump ensures coolant delivery during emergencies, such as a loss-of-coolant accident. It prevents overheating and potential reactor core meltdowns by maintaining safe temperature levels. Available in vertical and horizontal multistage configurations, these pumps feature low NPSH capabilities and versatile hydraulic options to meet operational needs. Their durability, compliance with nuclear safety standards, and ability to handle demanding conditions make them a critical asset for nuclear plant safety. These pumps reliably support accident mitigation strategies, safeguarding both reactor integrity and personnel during critical emergency scenarios.

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RHR Pump nuclear

Nuclear Residual Heat Removal Pump

A nuclear residual heat removal pump is a vital component in nuclear power plants. Its main purpose is to extract residual heat from the reactor core after the reactor has been shut down. This function is critical for maintaining safe temperature levels and preventing the risk of overheating.

This pump removes residual heat from the reactor core post-shutdown, ensuring safe temperature levels and preventing overheating. It plays a crucial role in maintaining nuclear reactor integrity during cooldown operations. Designed for reliability and compliance with nuclear safety requirements, the pump features advanced materials and engineering to withstand high temperatures and prolonged operation. Residual Heat Removal Pumps support plant safety by continuously dissipating decay heat, ensuring system stability and avoiding potential thermal damage during non-operational phases. Their efficiency and dependability make them indispensable for nuclear power plant cooling systems.

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Pumps
Charge pump

Nuclear Charging Pump

A charge pump is used to boost the pressure of a fluid before it enters the inlet of the main pump, providing enough pressure to overcome the required net positive suction head (NPSH) and prevent cavitation in larger pumping equipment. In a nuclear power plant, particularly in pressurized water reactors (PWRs), a charge pump is a critical component of the reactor’s coolant system, maintaining the pressure and flow of the reactor coolant to ensure the reactor core remains adequately cooled.

Charge Pumps boost fluid pressure before it enters main pumps, ensuring proper net positive suction head (NPSH) to prevent cavitation. In nuclear plants, particularly pressurized water reactors (PWRs), they maintain reactor coolant pressure and flow, safeguarding reactor core cooling. These pumps are designed for reliability under high-pressure and high-temperature conditions, withstanding demanding nuclear environments. Their role in reactor coolant systems ensures seamless operation during critical processes. With advanced engineering and robust materials, Charge Pumps support plant efficiency and safety, preventing mechanical failures and ensuring the sustained cooling necessary for reactor stability.

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Feedwater pump

Nuclear Auxiliary / Emergency Feedwater Pump

In the event of a main feedwater system failure, Auxiliary (Emergency) Feedwater Pumps provide a critical alternative water supply to the reactor to maintain safe operating conditions. These pumps can be either Motor-Driven or Turbine-Driven. Motor-Driven pumps typically operate using power supplied by a backup diesel generator, while Turbine-Driven pumps are powered by the steam produced by the reactor itself.

In the event of a main feedwater system failure, Auxiliary (Emergency) Feedwater Pumps provide a critical alternative water supply to the reactor to maintain safe operating conditions. These pumps can be either Motor-Driven or Turbine-Driven. Motor-Driven pumps typically operate using power supplied by a backup diesel generator, while Turbine-Driven pumps are powered by the steam produced by the reactor itself.

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Nuclear Startup Feed Pump – ClydeUnion Pumps Product Image

Nuclear Startup Feed Pump

A nuclear Startup Feed Pump is a crucial component in a nuclear power plant’s feedwater system. Its primary role is to supply feedwater to the steam generators during the startup phase of the plant. This pump ensures that the steam generators receive the necessary water to produce steam, which drives the turbines and generates electricity.

The CUP-FK Startup Feed Pump supplies initial feedwater to steam generators during nuclear plant startup. Its radially split, multi-stage barrel design withstands high pressure and temperatures, ensuring operational flexibility. Thermal shock resistance allows it to handle sudden temperature changes, while its full cartridge withdrawal simplifies maintenance. With capacities up to 2,800 m³/hr and delivery heads up to 5,000 m, it ensures efficient feedwater delivery under extreme conditions. Designed for reliability and cost-effectiveness, the CUP-FK supports safe and efficient startup processes in nuclear facilities, minimizing operational risks.

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Pumps

Nuclear Cooling Water Pump

A Cooling Water Pump plays a vital role in the operation of a nuclear power plant. The primary function of the Cooling Water Pump is to continuously circulate the nuclear furnace coolant (light water) to the steam generator, removing and transferring the heat generated by nuclear fusion.

A Cooling Water Pump plays a vital role in the operation of a nuclear power plant. The primary function of the Cooling Water Pump is to continuously circulate the nuclear furnace coolant (light water) to the steam generator, removing and transferring the heat generated by nuclear fusion.

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Booster

Nuclear Booster Pump

Booster pumps increase the pressure of a water within the reactor coolant system or feedwater system. These pumps enhance the efficiency and reliability of water circulation, which is critical for maintaining proper cooling and heat transfer in the reactor. Booster pumps play key roles in different systems depending on their placement and function.

Booster pumps increase the pressure of a water within the reactor coolant system or feedwater system. These pumps enhance the efficiency and reliability of water circulation, which is critical for maintaining proper cooling and heat transfer in the reactor. Booster pumps play key roles in different systems depending on their placement and function.

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Pumps
API 674 Reciprocating Pumps

Reciprocating Pumps

API 674 Reciprocating power pumps are designed with exceptional versatility for easier product selection and faster turnaround. These units driven via electric motors or diesel engines through V-belt or gear.

ClydeUnion’s Reciprocating Pumps are versatile solutions for high-pressure nuclear applications, including chemical injection, reactor cleanup, and safety injection. Designed for reliability and minimal maintenance, they meet API 674 and ASME N standards. Their modular construction ensures ease of maintenance and adaptability to client requirements. With electric or diesel motor options and advanced stuffing box designs, these pumps deliver efficiency in continuous duty operations. Proven in demanding environments, they replace high-pressure centrifugal pumps for enhanced performance. Reciprocating Pumps are essential for maintaining operational safety and efficiency in nuclear power plants.

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Nuclear Recip

Nuclear Reciprocating Pumps

The ClydeUnion Pumps reciprocating power pumps are designed with exceptional versatility to efficiently meet the requirements of a wide variety of nuclear pumping applications. These units are ruggedly designed for minimum maintenance and to meet the heavy-duty requirements of continuous duty operation in general industry as well as API 674 services.

The ClydeUnion Pumps reciprocating power pumps are designed with exceptional versatility to efficiently meet the requirements of a wide variety of nuclear pumping applications. These units are ruggedly designed for minimum maintenance and to meet the heavy-duty requirements of continuous duty operation in general industry as well as API 674 services.

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Valves
GS and SD Control Valves

Nuclear Control Valves

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

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Valves
GS and SD Control Valves

Nuclear Control Valves

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

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Valves
GS and SD Control Valves

Nuclear Control Valves

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

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Valves
GS and SD Control Valves

Nuclear Control Valves

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

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Valves
GS and SD Control Valves

Nuclear Control Valves

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

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Valves
GS and SD Control Valves

Nuclear Control Valves

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

With over 45 years of expertise in engineering and manufacturing, Copes-Vulcan is a trusted leader in advanced valve solutions for the nuclear sector. Our General Service and Severe Duty control valves are designed for a wide range of reactor types, including Boiling Water Reactors (BWR), Heavy Water Reactors (CANDU), Small Modular Reactors (SMRs) and Pressurized Water Reactors (PWR).

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What is Happening in Nuclear?

Our Role in Canada's Nuclear Sector

Canadian Nuclear Industries and Ontario’s Nuclear Advantage gathered to recognize our contribution to the nuclear sector in Ontario.

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ISO 19443 Certification

Our European facility in Annecy, France, has achieved ISO 19443 certification, which pertains to nuclear safety.

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Sizewell C Partners with Celeros FT

Celeros FT has been awarded multiple contracts to supply safety-critical nuclear pump packages for Sizewell C, the UK’s newest nuclear power station.

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Nuclear Materials

Brochures

CUP Nuclear Pumps
CUP Nuclear Pumps
CUP Nuclear Pumps_zh CN
CUP Nuclear Pumps_zh CN
CV Nuclear Valves
CV Nuclear Valves
CUP Nuclear White Paper
CUP Nuclear White Paper

Case Studies

Smart Engineering Minimizes Nuclear Outage
Smart Engineering Minimizes Nuclear Outage
CUP 382 04 REC NUC GB Page 1
Spare Parts Capability Saves Nuclear Sector Significant Downtime and Cost
Pump Modifications Solve Endemic Issues in PWR Nuclear Power Plants
Pump Modifications Solve Endemic Issues in PWR Nuclear Power Plants

How are we helping power Nuclear New Builds?

We are already working alongside industry leaders to build the next generation of nuclear power plants, delivering cutting-edge solutions that meet today’s rigorous standards. With over 60 years of expertise, our safety-critical pumps and valves have powered the world’s largest reactors, ensuring unmatched reliability, compliance and performance.

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