Horizon security standards review

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Horizon operates in the nuclear energy sector where safety is a critical element of operations. The energy provider recognises that the security of critical systems is a concern for its own activity, across industry, and for the UK Government. Although Horizon had embraced industry good practice to address these security concerns, much of the specific guidance at the time was still under development.

Horizon was particularly aware of the issues surrounding the UK approach to security of control and protection systems. Realising that it did not possess detailed knowledge of evolving best practice and regulatory requirements, our client wished to undertake a comprehensive review of relevant standards, guidance and approaches, as well the expectations of bodies that provided security advice.

Atkins was chosen to undertake this security standards review. Our work addressed UK best practice and other well established industry methods from around the world. Nuclear best practice was also discussed, including the US NRC 5.71 Regulatory Guide, which had already adopted international good practice, albeit through a very prescriptive implementation.

We reviewed the best practice and standards utilised for securing Industrial Control Systems (ICS) and produced a comprehensive overview, assessment and recommendations on future practice.

Our review included: The ISO/IEC 27001/27002 series:

• ISA99 – Industrial Automation and Control System Security

• IEC 62443 – Industrial Communication Networks Network and System Security

• NIST SP 800-82 Guide to Industrial Control Systems (ICS) Security

• NRC Regulatory Guide 5.71 Cyber Security Programs for Nuclear Facilities.

At the end of the comprehensive review, Atkins produced two briefing papers. The first of these covered ICS security best practice, emerging developments and a forward-looking strategy. The second paper concentrated upon nuclear safety protection systems.

The briefing papers, follow up presentations, and meetings provided Horizon with a detailed understanding of the security and safety practices which they then used to inform their strategic planning.

Key facts

Country/region:

UK

Client:

Horizon

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CONTACT

UK Europe

Andrew Wall
Head of cyber security

11-12 Floors
Eagle Tower
Montpellier
Cheltenham GL50 1TA 
Gloucestershire
United Kingdom
Tel: +44 1242 54 6278
Email: andrew.wall@atkinsglobal.com

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