The cooling of nuclear reactors through use of constantly maintained liquid flows is critical. To attend to our customers in the nuclear sector, we have residual heat removal pumps, charging pumps, main and auxiliary reactor feedwater pumps, containment spray pumps, medium head safety injection pump, concrete volute cooling water pumps, screw pumps, rotary vane pumps, control valves and containment sampling isolation valves. All of these items are fully compliant with international certification standards (including ASME and RCC).
Our involvement in the nuclear power market began with the first ever industrial scale nuclear power plant and continues with nuclear pump and valve installations in over 65% of operational nuclear power plants worldwide.
ClydeUnion Pumps offers a comprehensive Class 1, Class 2 and Class 3 product range and can also provide a full conventional island product offering designed for the high reliability and availability requirements of a nuclear facility. Key to our success in both civil and naval nuclear power is our ability to acquire and maintain the high standards required to design and build nuclear coded pumps.
Our three coded facilities - Glasgow-UK, Annecy-France and McKean, PA-USA, are all qualified to ASME “N Stamp” and/or RCC-M and boast a long history of excellence.
The CUP-TWL is a unique solution for turbine driven safety related duties in nuclear power plants. Capable of being engineered to match a broad range of system requirements, it consumes less physical space than separate turbine/pump configurations. Functioning as a turbine driven auxiliary feed water pump in a pressurized water reactor system and as part of the reactor core isolation cooling system in a boiling water reactor, the CUP-TWL provides a reliable decay heat removal capability.
It can operate without external services, so it has the ability to run for extended periods under a loss of external and/or back-up power to a reactor site. The CUP-TWL is one of the few proven technologies that can currently meet the demanding requirements of a station black out scenario, offering both existing and new sites a solution to improve the safety and integrity of their plant.
ClydeUnion Pumps offers the following:
During a station blackout (SBO), the continued, reliable operation of auxiliary feedwater (AFW) pumps is vital to nuclear plant safety. The Turbine Water Lubricated (TWLTM) Pump is a combined centrifugal pump and turbine designed specifically for nuclear safety applications. It requires no external power or additional support systems to provide continued, remote operation during prolonged periods of power outage.
Steam-driven, it provides reliable pumping of water from the emergency feedwater storage tank to the steam generators for core heat removal in the event that the main feedwater system is unavailable.
There are many benefits of installing a TWLTM Pump including:
- Water lubricated bearings ensure reliable operation without the need for oil systems
- Self-contained governor and controls require no external services
The TWL™ has a single casing design with no shaft protrusions, enabling it to start and operate while fully submerged. Extensive testing at our Glasgow facility has shown that it will maintain safety performance and continue to operate with no adverse effects or detrimental changes to performance for a minimum of eight hours. During this time, the pump can be started and stopped, again with no detriment to its performance.
Copes Vulcan valves have been engineered and manufactured for the nuclear industry for over forty years, proudly producing globe, gate, swing check, butterfly, ball and sampling valves for our nuclear customers. We provide technical solutions for a variety of nuclear applications including feedwater, steam dump, pressurizer spray, reactor coolant, sampling, service water, and safety injection valves.
The Copes-Vulcan manufacturing facility in McKean, PA holds 'N', 'NPT', and 'NR' certification and is certified by ASME to manufacture valves and components to the Boiler and Pressure Vesssel Code.
Copes-Vulcan valves are manufactured for boiling water reactors (BWR), heavy water reactors (CANDU) and pressurized water reactors (PWR), and are supplied to many countries including the United States, Canada, Mexico, South Korea, China, Japan, Switzerland, Brazil and many more.
Typical nuclear product applications include:
We also have a specialist team of field service technicians who provide technical support to our customers, and have been actively providing refurbishments and upgrades of existing equipment to help the utilities to reduce their maintenance costs and support power uprates.
We offer a wide range of services including:
Our product range has been developed in response to the specific needs of our nuclear customers and comprises a variety of globe valves for standard to severe duty valve applications. With one of the largest selections of control valve trims available in the nuclear market, Copes-Vulcan valve designs can meet our customers' demanding requirements and conditions.
Containment Sampling Isolation valves are custom designed for the nuclear industry providing FCI 70-2 Class V shutoff, with excellent performance in high differential pressure applications. The valve was designed, built and tested in accordance with ASME Boiler and Pressure Vessel Code Section III for Classes 1, 2 or 3. ANSI B16.34 valves are also available.
Also available are high performance, reliable butterfly, ball, gate and check valves designed and customized for the nuclear industry.