How to apply for Member (MNucI)

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Who should apply to be a Member?

Nuclear professionals working at all levels in the nuclear sector and its supply chain. You need to have at least 3-5 years’ experience in the Nuclear sector (if you’re less experienced we’d welcome an application at the Associate grade)

 NI Members are practising 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.

NI Members also commit to comply with the NI Code of Conduct.

 Recognition as a professional Member (MNucI) of the NI provides independent verification of your nuclear professionalism, whatever your specialism, job role and work context.

If you don’t have an NI Member or mentor working with you on your application and you’re not sure if you’re at the right level to apply, 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


Professional Registration

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: EngineeringScience ; 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


How do I apply? 

Complete the relevant Application Form selected from the table below, and return along with a full CV, copies of certificates, CPD records and the application fee (please see checklist at the end of the application form).

Please read the Nuclear Delta before you make your application.

Please also see "CPD requirements for applications"


Your completed application should be emailed to Please note, that you do not need to send a hard copy. 

2024 Application dates

The closing date for the Membership Committee to consider membership and professional registration applications in 2024 are:

  • 29 April 2024
  • 5 August 2024
  • 28 October 2024

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.


Application Forms



If you haven't found the answer to your question, please don't hesitate to contact the Membership Team who will be happy to assist. 

phone-greyonwhite 03303 410574