NG Competent Person Substations NSI6 and NSI8 Full

Course details

This course qualifies individuals for Competent Person (CP) status under National Grid Safety Rules in substation environments, focusing on NSI 6 (Work in Substations) and NSI 8 (Earthing High Voltage Equipment). It enables candidates to safely carry out switching, isolation, and the application of portable earths within National Grid substations.

The course combines theory, procedure, and practical tasks to ensure delegates meet the technical and safety requirements for CP authorisation.

Who Should Attend

• Individuals nominated for Competent Person authorisation in National Grid substations
• Contractors and engineers requiring NSI 6 & 8 authorisation
• Existing CPs looking to expand competence into substation environments
• Employees undertaking tasks involving substation access and HV switching

Course Content

• Roles and responsibilities of a Competent Person under National Grid Safety Rules
• Application and control of safety documents (Permit for Work, Sanction for Test)
• Practical procedures for isolation and earthing (portable earths)
• NSI 6 – Substation access, safety clearances, and control
• NSI 8 – Earthing of high-voltage equipment and systems
• Risk assessment, control measures, and safe systems of work
• Switching protocols and coordination with Control Engineers
• Documentation and operational scenarios

Learning Outcomes

Delegates will:

• Understand and apply National Grid NSI 6 and NSI 8 procedures
• Safely undertake access, switching, and isolation tasks in substations
• Demonstrate the application of portable earths and issue safety documents
• Qualify for CP authorisation under NG substation safety requirements

Prerequisites

In order to be eligible for NG Competent Person Substations NSI6 and NSI8 full course, you will need to hold

• An NG Person Substation
• And have evidence of 9 days on a National Grid Working Party Register with Safety Document Numbers
• Or hold an existing NG Competent Person Substation

If you have previously held National Grid Competent Person within the last 2 years, then additional evidence is not normally required.

Course Format & Location

• Duration: 1 Day
• Format: Instructor-led with practical components
• Location: This National Grid training and assessment is only available at the following locations:-
  • Eakring, Nottinghamshire (Tues to Friday most weeks) 
  • Blackley, Manchester (Mon to Friday) 
  • Graveley, Hertfordshire (Mon to Thursday most weeks) 
  • Melksham, Wiltshire (1 week a month) 
  • Littlebrook, Kent (1 week a month) 
  • Langley Park, Durham (2 to 3 days a month) 

Important Booking Information

Please note: This course is typically delivered for groups of four or more. If you have fewer than four delegates, please contact us — we may be able to coordinate with other contractors to arrange a suitable session.

Why This Course Matters

The Competent Person – Substations (NSI 6 & 8) course provides the essential training for individuals expected to manage safety documentation and perform critical electrical operations in National Grid substations. CP status under NSI 6 and NSI 8 is a formal requirement for many HV switching, testing, and access tasks.

Useful documentation

• NSI9 Testing High Voltage Equipment
• National Grid NSI 30
• National Grid Safety Rules and Guidance
• NSI 2
• NSI 4
• NSI 6
• NSI 8

Frequently Asked Questions

Q: What’s the difference between NSI 6 and NSI 8?
A: NSI 6 governs safety within substations, including access and control. NSI 8 covers the correct application and removal of earthing devices on HV equipment.

Q: Does this course include practical switching and earth application?
A: Yes, candidates will carry out supervised practical exercises, including the safe use of portable earths and switching protocols.

To Book Your Training

The National Grid Authorisation Training can only be booked either directly with NG or through the live NG Booking Portal via an approved provider, such as ourselves.

To Book this training please contact us on 01926 674340 or email Training@Pragmatic-consulting.co.uk

Required Information

To book a place, you will need to provide the following details:

• Delegate’s full name
• Delegate’s date of birth
• Delegate’s mobile number
• Delegate’s EUSR number (if applicable)
• Confirmation of Health & Safety Authorisation
• Payment or Purchase Order (PO)

You might also be interested in the following courses

• NG Person Substations
• NG Person OHL
• NG Person Subs Online Renewal
• NG Person OHL Online Renewal
• NG Competent Person Subs
• NG Restoration of Motive Power (ROMP)
• NG Competent Person OHL CPA
• NG Competent Person OHL CPB
• NG Competent Person OHL CPD
• NG Competent Person Overhead Lines (OHL) CPC LAC & PFW Application of Drain Earths (No Access onto Conductors) e.g., Tower Painters who Earth
• BESC AME Subs
• BESC AME OHL
• NSI9 Testing High Voltage Equipment

If you have any questions about this or any other course, please get in touch on 01926 674340