How to apply for Fellow (FNucI)

Established Nuclear professionals who have significant autonomy and can demonstrate they have made a significant contribution to the nuclear sector over and above their job role.

This can include things like:

- publishing papers
- chairing committees
- speaking at conferences
- significant mentorship of junior staff
- outstanding technical contributions
- raising the profile of nuclear
- campaign work
- and/or many similar activities. 

 NI Fellows are established nuclear professionals from a wide range of technical and non-technical disciplines, who apply personal behavioural standards and exercise judgement based on an understanding of the Nuclear Delta®, as applicable to their role and work context, to ensure their decisions and actions support nuclear safety and security, both now and in the future.

 Recognition as a Fellow of the NI demonstrates your standing and influence as a leading nuclear professional.

If you don’t have an NI Fellow or mentor working with you on your application, or you’re not sure if you’re at the right level to apply and/or aren’t sure how to demonstrate that you meet the criteria, we’re here to help!
We will have an expert pre-assess your suitability and give you suggestions on how to have the best chance of being accepted. Please send your CV and any specific questions that you have to membership@nuclearinst.com.

Fellow (FNucl) Brochure

We are licensed by three bodies, the Engineering Council, the Science Council and the Society for the Environment, to assess applicants for entry onto the respective professional registers, at the registration grades of Chartered Engineer, Chartered Scientist, Chartered Environmentalist, Incorporated Engineer, Engineering Technician and Registered Environmental Technician.

Find out more about each of the registration pathways: Engineering ; Science ; Environment 

Please note that you must either be, or be in the process of applying to become, an NI Member or Fellow before you can apply for an additional professional registration. To enquire about joining or upgrading to Member or Fellow, please contact membership@nuclearinst.com

Complete the relevant Application Form selected from the table below. Your completed application form, along with a full CV, copies of certificates, CPD records and the application fee (please see checklist at the end of the application form), should be emailed to membership@nuclearinst.com.

Please do NOT send a hard copy!!

Please read the Nuclear Delta before you make your application.

Please also see "CPD requirements for applications"


PLEASE NOTE: If applying for registration as CEng, CSci or CEnv, please make you've consulted the relevant body's website for the eligibility criteria.

- Applicants for Chartered Engineer need to have qualifications that are recognised by the Engineering Council (check here). If you don't have recognised quals, you'll need to ask us about doing an equivalence application.

- Applicants for Chartered Scientist require Masters level qualifications in a scientific field or you can ask us about an equivalence application.

- Applicants for Chartered Environmentalist need to have Masters level qualifications or ask us about doing an equivalence application.

Your completed application should be emailed to membership@nuclearinst.com. Please note, you do not need to send a hard copy

2025 Application dates

The closing date for the Membership Committee to consider membership and professional registration applications in 2025 are:

• 23 January 2025
• 1 May 2025
• 31 Jly 2025
• 30 October 2025

Please note: If we receive your application more than a week prior to the deadline, we will take the opportunity to pre-assess it. We will give you feedback if there are sections where enhancement would give you a better chance of acceptance.

However, if we receive it within a week of the deadline it will go for assessment as is. 

  For further guidance and support please access the NI Membership Resources before completing your application.

Use form MF2 If you are an Associate member or not yet an NI member and wish to join at the grade of Fellow
Use form MF3 if you are currently a Member (MNucI) and wish to upgrade to Fellow
Use the applicable form MF201 to MF206 if you wish to apply for Fellow plus one of the professional registration grades at the same time
Use the applicable form RF401 to RF405 if you are already a Member or Fellow of the NI and wish to add professional registration