Single loop controller qualified for nuclear service

Yokogawa YS1700 Single Loop Controller is now qualified to be used in nuclear applications, non-safety seismic, and safety seismic applications, including nuclear safety. It is also used in industries such as power, petrochemical, water, pulp/paper, marine and municipal boilers.


The YS1700 Single Loop Controller by Yokogawa is now qualified to be used in nuclear applications including water control, temperature control, level and pressure applications. Courtesy: YokogawaYokogawa's Single Loop Controller, the YS1700, also has been qualified for non-safety seismic and safety seismic applications, including nuclear safety, and is also used in industries such as power, petrochemical, water, pulp/paper, marine and municipal boilers. The nuclear safety and seismic application qualification was based on EPRI TR-107330 under and audited quality management program meeting the requirement of 10CFR50 Appendix B, NQA-1, and 10CFR21.

Control applications in nuclear facilities are numerous, and the YS1700 is applicable to many of them including; feed water control, feed water heater, heater drain control, heat exchanger temperature control and many other flow, level and pressure applications.

The YS1700 features include dual CPUs with automatic fail over, which provides display and manual control capability if an abnormality occurs in one of the CPUs. Other features include a hard manual backup, battery free memory backup, and backwards compatibility with all previous YS control products.

Yokogawa Corporation of America 

- Edited by Chris Vavra, Control Engineering,

No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
Salary survey: How much are you worth?; Dedicated outdoor air systems; Energy models and lighting
Fire, life safety in schools; Fire protection codes; Detection, suppression, and notification; 2015 Commissioning Giants; Emergency and standby power in hospitals
HVAC and building envelope: Efficient, effective systems; Designing fire sprinkler systems; Wireless controls in buildings; 2015 Product of the Year winners
Designing positive-energy buildings; Ensuring power quality; Complying with NFPA 110; Minimizing arc flash hazards
Implementing microgrids: Controlling campus power generation; Understanding cogeneration systems; Evaluating UPS system efficiency; Driving data center PUE, efficiency
Optimizing genset sizing; How the Internet of Things affects the data center; Increasing transformer efficiency; Standby vs. emergency power in mission critical facilities
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.