CDM in Practice on National Grid Electricity Transmission Projects

How Planning, Coordination and Awareness Support Safe and Efficient Delivery

The Construction (Design and Management) Regulations 2015, commonly referred to as CDM 2015, provide the legal framework for managing health and safety throughout the lifecycle of a construction project.

For organisations working on National Grid Electricity Transmission projects, CDM duties must be applied alongside NGET Supplier Requirements, Safety Rules, technical procedures and project-specific arrangements.

One of the key supporting documents is NG/ET/SR163, Management of Works. This sets out minimum requirements for managing NGET construction sites and helps translate CDM responsibilities into practical project and site controls.

Why CDM Matters on NGET Projects

NGET projects can involve complex construction activities within or close to operational electricity transmission infrastructure.

These may include:

• Substation construction and modification
• Civil engineering and excavation
• Cable and overhead line works
• Installation of Bulk Purchase Equipment
• Equipment installation and commissioning
• Temporary works

Projects may involve several organisations, specialist contractors and operational teams working within the same environment.

The Principal Contractor may control the construction area, while National Grid retains responsibility for operational equipment and Safety from the System.

CDM provides the framework for ensuring that these different activities and responsibilities are properly planned, managed, monitored and coordinated.

Planning for Safe and Efficient Delivery

NGET projects are often delivered against important programme milestones, including planned outages, commissioning dates, equipment deliveries, access restrictions and the availability of specialist resources.

Programme management is therefore an essential part of successful project delivery.

CDM does not prevent work from being delivered efficiently. It helps ensure that the programme allows sufficient time for the planning and coordination needed to complete the work safely.

Where dates change or activities are accelerated, the project team should consider the effect on:

• Pre-Construction Information
• Contractor mobilisation
• Risk assessments and method statements
• NGET review periods
• Supervision and competence
• Interfaces with other activities

The earlier these matters are identified, the easier they are to incorporate into the programme.

Planning, design review, (Risk Assessment and Method Statements) RAMS preparation and coordination are part of delivering the work. They should not be treated as separate administrative activities after the programme has already been agreed.

Integrating Contractors into the CDM Arrangements

On some projects, specialist contractors, suppliers or service providers may be appointed directly by the Client.

This may be appropriate where specialist expertise, existing frameworks, commissioning support or equipment requirements are involved.

Although the commercial appointment may sit directly with the Client, the construction activity must still be integrated into the wider CDM arrangements.

Where the contractor will work within an area controlled by the Principal Contractor, the Principal Contractor must be able to plan, manage, monitor and coordinate the activity as part of the construction phase.

The directly appointed contractor also retains its own CDM responsibilities. It must plan and manage its work, cooperate with the Principal Contractor, provide relevant information and comply with the applicable project and site arrangements.

Effective integration may include:

• Early notification of the proposed work
• Confirmation of the contractor’s scope
• Clear roles and reporting arrangements
• Review of competence and resources
• Coordination of access, welfare and site induction
• Review of relevant RAMS
• Communication with other contractors

This does not change the commercial relationship between the Client and contractor. It ensures that the activity is properly coordinated with the rest of the construction phase.

Commercial Arrangements and CDM Responsibilities

Commercial arrangements establish who appoints, instructs and pays for particular work.

CDM arrangements establish how the construction activity is planned, managed, monitored and coordinated.

The two arrangements must operate together, but they are not the same.

A contractor may be:

• Appointed directly by the Client (examples include: BPES (Bulk Purchase Equipment Suppliers, OEM (Original Equipment Manufacturers)
• Appointed by the Principal Contractor
• Providing installation or commissioning support
• Attending site for a short-duration activity

Regardless of the appointment route, the work must be incorporated into the relevant CDM and site-management arrangements.

The Principal Contractor needs sufficient information and involvement to coordinate the work within the construction phase. The contractor must cooperate and provide the information needed to support that coordination.

Clear arrangements allow each organisation to fulfil its responsibilities without changing the underlying commercial relationship.

Applying NGET Requirements in Practice

NG/ET/SR163 supports the practical implementation of CDM across NGET projects.

It covers areas including:

• Project resources and competence
• Pre-Construction Information
• Construction Phase Planning
• Temporary works
• CDM demarcation zones
• Safety Document requests and RAMS
• Communication and reporting
• Project handover information

For example, CDM demarcation arrangements help establish who controls the construction area, how access is managed and how the site interfaces with operational equipment.

The Safety Document request process also helps distinguish between the contractor’s responsibility for general construction safety and the role of the NGET Senior Authorised Person in determining the precautions required to provide Safety from the System.

Awareness Across the Project Team

Effective CDM management depends on awareness at every level of the project.

Site Operatives

Operatives should understand the site rules, limits of their work, relevant RAMS, how their activities may affect others and when work should stop and be escalated.

Supervisors

Supervisors should understand how to implement the Construction Phase Plan, coordinate work groups, monitor RAMS and communicate changes that may affect other activities.

Managers

Managers should understand the responsibilities of the CDM duty holders, how appointments and programme decisions affect coordination, and the time and resources needed to support safe delivery.

CDM awareness should not be limited to those preparing formal project documents.

A well-written procedure would have limited value if the people expected to apply it do not understand how it relates to their role.

Coordination Is More Than Paperwork

A project may have a Construction Phase Plan, risk assessments, method statements, design-risk registers and meeting records, but the existence of these documents does not automatically mean that risks are being effectively managed.

The documents must reflect the actual work, site conditions and interfaces between organisations.

Effective coordination means ensuring that:

• Designers understand construction and operational constraints
•  Contractors receive the information needed to plan their work
• RAMS reflect the actual activity
• Changes are reviewed before implementation
• Temporary works are identified and controlled
• NGET operational requirements are understood

The objective is not to produce more paperwork. It is to turn legal, contractual and procedural requirements into practical controls that are understood and applied on site.

Final Thoughts

Complex NGET projects involve legal duties, contractual relationships, operational requirements and programme commitments.

These arrangements may change as a project develops and will not always align automatically.

CDM provides the framework for bringing the different elements together, while NGET Supplier Requirements help translate that framework into practical project and site arrangements.

Successful delivery depends on:

• Early involvement of the relevant duty holders
• Clear responsibilities
• Realistic programme allowances
• Integration of contractors into the construction arrangements
• Awareness among operatives, supervisors and managers
• Effective communication when circumstances change

When these principles are applied consistently, CDM supports safe, coordinated and efficient project delivery.

Need Support with CDM and NGET Supplier Requirements?

Pragmatic Consulting provides CDM Awareness and NGET Supplier Requirement training to support National Grid Electricity Transmission and its delivery partners.

Training is designed to help operatives, supervisors and managers understand their responsibilities and how CDM and NGET requirements apply within their roles and working environments.

Courses use practical examples and project scenarios to support the effective application of CDM 2015 and relevant NGET Supplier Requirements.