Fellow (FNucl)

Who should apply?

Fellow-graphic wFellowship of the Nuclear Institute is the highest class of membership. Fellows are typically nuclear professionals working in senior positions who have a high level of autonomy and who have made a significant contribution to the industry. They will meet the requirements for this grade including the requirements of the Nuclear Delta® applicable to their role and responsibility.

How do I apply?

For direct entry as a Fellow, complete the entire Membership Application, including the section to demonstrate you satisfy the Nuclear Delta®, and return copies of degree certificates and any existing memberships by email.

For existing Members or Associates wishing to upgrade to Fellow, please find the process here.  

Please ensure that your Proposer and Referee complete the Reference Form.

For further information on the application process, please see the Application Guidance. Current fees for application and all grades of membership can be found on the Fees & Payments page.


Professional registration is an important milestone for any engineer or scientist. It establishes their proven knowledge, understanding and competence. The Nuclear Institute is licensed by the Engineering and Science Councils and by the Society for the Environment. Find out more about how to apply here. You can apply for these even as an existing Member or Fellow of the NI.

What happens next?

Applicants must demonstrate they have the relevant qualifications (or equivalent), work experience, Nuclear Delta® and competencies for the grade and registration level applied for when applicable. They must also demonstrate a commitment to maintain their competence, work within professional codes and participate actively within the nuclear profession.

The peer review process will be undertaken by NI Fellows who are trained in assessment techniques. The full process can take 12 weeks if an interview is required. These are currently being undertaken online.

The Nuclear Institute expects Fellows to maintain a CPD record to maintain their professional recognition in line with the Code of Conduct. Find out more here 

Questions before you start?

Please contact membership@nuclearinst.com or call 020 7816 2605 and speak to Hansa.

Want more help?

Why not sign up for an online webinar to guide you through the process? These will be available in April, May and June 2020 - see the events page for details.