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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
Nuclear fuel cycle reimagined: Powering the next frontiers from nuclear waste
In the fall of 2023, a small Zeno Power team accomplished a major feat: they demonstrated the first strontium-90 heat source in decades—and the first-ever by a commercial company.
Zeno Power worked with Pacific Northwest National Laboratory to fabricate and validate this Z1 heat source design at the lab’s Radiochemical Processing Laboratory. The Z1 demonstration heralded renewed interest in developing radioisotope power system (RPS) technology. In early 2025, the heat source was disassembled, and the Sr-90 was returned to the U.S. Department of Energy for continued use.
The CNP exam is offered three times per year, in spring, summer, and fall. Your application and exam fees are due when you submit your application. Any candidate found ineligible at the time of application will forfeit $125 of the application fee; the balance of the application fee will then be refunded.
Now Open! Summer 2025
Application Deadline: Friday, July 25, 2025
Testing Period: Tuesday, August 12 - Tuesday, September 9, 2025
Fall 2025
Applications Open: Monday, September 15, 2025
Application Deadline: Tuesday, October 14, 2025
Testing Period: Wednesday, November 12 - Tuesday, December 16, 2025
Spring 2026
Applications Open: Tuesday, January 13, 2026
Application Deadline: Tuesday, February 17, 2026
Testing Period: Tuesday, March 24 - Wednesday, April 22, 2026
Summer 2026
Applications Open: Monday, May 18, 2026
Application Deadline: Thursday, June 18, 2026
Testing Period: Tuesday, July 28 - Tuesday, September 1, 2025
Fall 2026
Applications Open: Monday, September 14, 2026
Application Deadline: Wednesday, October 14, 2026
Testing Period: Wednesday, November 18 - Wednesday, December 16, 2026
After you application is approved, you will receive an email notification from ANS, followed by a email from Pearson/VUE with information about scheduling your exam appointment. To schedule your exam, visit the Pearson VUE website and either sign in or create a new account.
Go To Pearson VUE
How to Schedule Your Exam Appointment
The system will take you to the scheduling portal and show you the examinations for which you are eligible. Based on your address or using a location that you enter into the system, Pearson will show the closest three centers to you. You can change the range of centers by changing the search at the top of the screen. You may select up to three test centers to see availability at the testing centers.
The available dates and times are presented; please select the preferred test center, along with a date/time using the calendar screen. If no appointments are available at a center during the time you are authorized, you will need to pick a different center.
Once you select a date/time, you will be presented with information about your appointment. Please review the details before you confirm your appointment.
Once confirmed, you will receive a final confirmation screen and an email with the exam details, test center location, directions to the test center, and testing policies. Making additional changes after confirmation may result in additional fees.
How to Reschedule Your Exam Appointment
Requests for rescheduling an examination appointment to a different date within the same testing period must be submitted directly to Pearson VUE through the scheduling web link listed on your Exam Appointment (EA) email.
If you reschedule at least 72 hours before your appointment and use the Pearson VUE online portal, there is no fee. If you do not use the online portal for rescheduling, you will be charged a $125 rescheduling fee. Rescheduling is not permitted after the 72-hour cut-off point.
How to Transfer Your Exam Appointment to a Different Testing Period
Requests for transferring an examination appointment to a different testing period must be submitted by following the instructions provided by Pearson VUE testing service. All transfers of examinations to a different period are subject to a $125 transfer fee.
Failure to keep an appointment or cancelling an appointment without the appropriate notice (fewer than two weeks before the scheduled appointment) will result in forfeiture of all applicable exam fees.
You may transfer your exam to the next testing period up to two times. Upon transferring your exam, you are no longer eligible for a refund and will forfeit all applicable exam fees should you decide to cancel your exam after it has been transferred to a later testing period. If you wish to transfer your examination further than two testing periods from the original application, you must submit for a cancellation and refund and resubmit a new application.
It is strongly recommended that you familiarize yourself with the testing center location and parking facilities before the day of your exam so that you arrive at the testing center stress-free and on time.