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.
Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Rajeev Kohli, John S. (Sid) Alvis (Enercon), invited
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 357-366
The majority of instrumentation and controls (I&C) used in commercial nuclear power plants (NPP) were originally designed using older 1970s era analog-based technology. As the plants continue to age, analog-based controls have become obsolete and are no longer supported by original equipment manufacturers (OEMs). As technology evolved, OEMs have transitioned to modern software/firmware-based digital controls. This has left NPP owners with few alternatives other than to upgrade their systems using modern digital I&C technology. Digital systems present a different set of issues than analog-based systems. Among them include their vulnerability to malicious cyber security attacks that could compromise the integrity of the I&C system, and the challenge of protecting them from such attacks. The United States Nuclear Regulatory Commission (NRC), Nuclear Energy Institute (NEI), and the cyber security working group are working to address the cyber security issues in the digital systems. The NRC published a set of cyber security standards for the industry to follow. NEI published guidelines to implement the NRC cyber security standards. The NRC has endorsed NEI published guidelines. The nuclear industry is following these guidelines to implement cyber security to comply with NRC and Department of Energy regulations. Prior to terrorist’s attacks of 9/11, the nuclear industry gave little consideration to cyber security when implementing digital upgrades to I&C systems at NPPs. In general, cyber security was considered only a function of information technology (IT) and not a plant engineering function. Most commercial grade cyber security products are oriented to IT specific applications and have not been developed to protect modern digital I&C applications used in NPPs. Back fitting cyber security to address plant I&C systems without impeding functionality presents a huge challenge. Digital equipment is relied on now more than ever for plant operation, and as the use of digital equipment increases, so does the frequency of cyber-attack and risk of compromise. The nuclear power industry had to overcome multiple challenges during the creation and application of regulatory requirements and standards to address cyber security risks and vulnerabilities when applying IT based cyber security technology to NPPs digital instrumentation and controls. Among these include: 1) clarifying/translating the IT based cyber security standards to nuclear industry; 2) realizing the full scope of critical digital components; 3) documenting the configuration of digital plant equipment; 4) employing alternate methods to achieve compliance; 5) training/hiring staff to adequately implement the program; 6) obtaining organizational concurrence. This paper addresses the challenges that applied to the phased in approach the nuclear power industry faced to implement cyber security requirements applicable to digital I&C systems and components.