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About our CEO



Chief Executive Officer

The South African Nuclear Energy Corporation (Necsa)

Phumzile Tshelane holds a Bachelor of Science Honours (BSc Hons) degree in Nuclear Physics and an Executive Development Programme (EDP) (WITS).

He was appointed as the chief executive officer of the South African Nuclear Energy Corporation Ltd (Necsa) with effect from 01 September 2012.  Prior to his appointment, Tshelane served as acting general manager of the Eskom Nuclear New Build Division from June 2010. 

He has participated in long-term national and international academic research projects, been the recipient of the Ford Foundation Research Internship in 1988, and awarded the first prize for Physics essays in 1989 and 1993.

Tshelane has held a number of key positions in other entities, namely:

  • Vice-President, Nuclear Industry Association of South Africa (NIASA)
  • Non-executive Director of NIASA, acting as Eskom representative. He also served in the finance committee of the NIASA board. 
  • Non-executive director at Necsa.
  • Founder member and Steering Committee Chairperson of the South African Nuclear Human Asset and Research Programme; and
  • Founder member and Chairperson of the Board of Directors of the RGM School of Excellence.

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PO Box 582
South Africa
Tel: +27 305 4222
Fax: +27 305 4111


Necsa strengthens its Organisational Capacity

Necsa is pleased to announce recent senior executive appointments that will boost its ability to fulfil its organisational mandate and business imperatives, as noted below:

Ms Hlengiwe Khumalo is appointed as Group Executive: Corporate Services effective from 01 February 2017.

Ms Khumalo brings with over 20 years of immense experience in senior private sector and government leadership positions. Ms Khumalo was the Acting Chief Executive Officer and Chief Financial Officer for Construction Industry Development Board.

Her senior management responsibilities included overseeing a Corporate Services division comprised of Finance Management; Human Resource Management; Supply Chain Management; Facilities Management; Information Technology Management and Legal. She holds a Master of Business Leadership (MBL) degree, Post-Graduate Diploma in Business Management (PGDBM), Bachelor of Commerce (Majors in Business Management & Internal Auditing) and National Diploma in Internal Auditing (Majors in Financial Accounting & Internal Auditing).

Mr Monde Alvin Mondi is appointed as Necsa Group Senior Manager: Human Resources (HR) effectively from 01 February 2017.

Mr Mondi has more than 20 years of work experience. He cut his teeth in the HR environment as an HR Practitioner in the Public Sector, including Local government and a Parastatal then at Higher Education, a Section 9 Company, and other Private Sector organisations. He has accumulated more than 15 years’ experience in various leadership positions. Mr Mondi also gained vast knowledge in people’s management, strategy formulation and implementation, transformation and change management, restructuring of organisations, policy formulation, labour relations and negotiations.

He holds a Master’s degree in Labour Relations and Human Resource Management, Master’s Diploma in Human Resource, a Management Development Programme, Bachelor of Philosophy in Value Analysis and Policy Formulation and Bachelor of Arts from various universities.

He served at various Boards of Directors.

Ms Mosa Rasweswe was appointed as Group Executive: Nuclear Compliance and Services with effect from 01 January 2017.

Ms Mosa Rasweswe first joined Necsa in 1996 as a chemical engineering technician intern and was later appointed as a technician in the New Product Industrialisation Department which was part of Pelchem and worked on various flourochemical based products development projects including the WF6, NF3 and SF6 projects in the late 1990s. Ms Rasweswe has over 15 years’ experience at Necsa having started as a junior safeguards inspector in 2003 and later progressed to senior inspector until she was promoted to head the National Nuclear Safeguards function in 2008.

She is a former National Chairperson of the South African Young Nuclear Professional Society (2007-2011). She currently serves as a member of the South African Non-Proliferation of Weapons of Mass Destruction appointed by the Minister of Trade and Industry to advise the government on international obligations related to non-proliferation matters in the country, from 2013 to date. Ms Rasweswe is also currently a member of the Safeguards Advisory Group on Safeguards Implementation, a group of international experts appointed by the IAEA Director General to advice the IAEA on safeguards and contribute to developing new safeguards concepts and approaches since 2013.

Mr Ruby Ramatsui was appointed as Senior Executive Manager: Pelindaba Enterprises with effect from 01 January 2017.

Mr Ramatsui brings a wealth of experience that spans over 20 years in project management, from technical capital projects to project management of business solutions and information technology projects and project development projects.

He holds a Master’s Degree in Business Administration from Unisa School of Business Leadership. His career at Eskom commenced in 2000 as a Project Manager which paved his way to become a Senior Advisor from 2008-2012. Mr Ramatsui then joined Necsa as the Senior Manager: Strategic Support in 2012. He then moved up the ranks to Executive Manager – Strategy and Performance in 2013.

Energy minister appoints Nersa and Necsa CEOs

Minister of energy,Tina Joemat-Pettersson, has appointed Christopher Forlee as CEO of the National Energy Regulator of South Africa (Nersa) and reappointed Nuclear Energy Corporation of South Africa (Necsa) CEO Phumzile Tshelane for another term. The two will hold these positions for five and three years respectively, from 1 January 2017.

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Necsa's CEO at the WNA in London

Mr Phumzile Tshelane delivered a presentation during the WNA (World Nuclear Association) Symposium 2014 on "Nuclear Economics and Energy Policy in South Africa" in London during 10-12 September 2014. Click here to read the interesting presentation. More information on WNA site!

Necsa's mover and shaker

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