ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Dec 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
January 2026
Nuclear Technology
December 2025
Fusion Science and Technology
November 2025
Latest News
DNFSB spots possible bottleneck in Hanford’s waste vitrification
Workers change out spent 27,000-pound TSCR filter columns and place them on a nearby storage pad during a planned outage in 2023. (Photo: DOE)
While the Department of Energy recently celebrated the beginning of hot commissioning of the Hanford Site’s Waste Treatment and Immobilization Plant (WTP), which has begun immobilizing the site’s radioactive tank waste in glass through vitrification, the Defense Nuclear Facilities Safety Board has reported a possible bottleneck in waste processing. According to the DNFSB, unless current systems run efficiently, the issue could result in the interruption of operations at the WTP’s Low-Activity Waste Facility, where waste vitrification takes place.
During operations, the LAW Facility will process an average of 5,300 gallons of tank waste per day, according to Bechtel, the contractor leading design, construction, and commissioning of the WTP. That waste is piped to the facility after being treated by Hanford’s Tanks Side Cesium Removal (TSCR) system, which filters undissolved solid material and removes cesium from liquid waste.
According to a November 7 activity report by the DNFSB, the TSCR system may not be able to produce waste feed fast enough to keep up with the LAW Facility’s vitrification rate.
Shi Ji (CNPDC), Huang Qingwu, Zhou Chuangbin, Xu Liangjun (CNPEC), Jiang Hui (CNPDC)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1043-1052
This paper focuses on the study and implementation of General Operating Procedure(GOP) of CPR1000 nuclear power plant control room in China. Hong Yan He Nuclear Power Plant (HYH NPP) is on behalf of the first standard technology CPR1000 plants based on the LING AO 3&4 nuclear plants project[4]. Some technical improvements for Main Control Room such as Computerized Operating Procedure Systems (COPS)[5],Backup-Panel(BUP), Large Display Panel (LDP), Advanced alarm system, Safety Parameter Display system(SPDS)were implemented in the LING AO 3&4 NPP[6].. New development for General Procedure of CPR1000 Main Control Room is detailed in this paper. Meanwhile, New I&C systems provide new features that affect the control room operating concept, therefore a detailed analysis is required to take into consideration all the operating and human factor aspects. Any modernization for Control Room such as COPS, that affects what information the operator sees or the system's response to a control input must be empirically evaluated to ensure that the new study does not compromise human-system interaction effectiveness. Based on experience with HYH NPP Units 1&2 in China, this paper presents the approach used as well as the most relevant aspects of this kind of project. This approach will be used in new nuclear power plant, and also used in modernizing I&C system in currently operative nuclear power plants, in addition to meeting safety requirements and the plant's operational requirements, to improve cost-effective plant and human performance and to reduce likelihood of human errors, to gain maximum benefit of the implemented technology and to increase the performance, resulting in improved plant safety, availability, reliability, and cost-effective operation.
