City & Guilds Level 2 Diploma in Network Construction Operations – NCO2 GAS Service Layer

The NCO2 Gas Service Layer training course covers the essential knowledge and practical skills required for installing and maintaining low-pressure gas service pipes, including:

Gas Service Installation Fundamentals

• Installing low-pressure service pipes up to 63mm
• Making safe and compliant connections to mains
• Identifying materials, components and service installation requirements

Excavation, Backfill & Site Safety

• Preparing and excavating for service installations
• Maintaining safe working conditions around utilities
• Applying reinstatement techniques following installation

Jointing & Testing Processes

• Electrofusion jointing methods and safe operating procedures
• Pressure testing and purging of new service installations
• Commissioning service pipes and confirming system integrity

Working Safely on Gas Networks

• Working near live gas in line with industry safety regulations
• Following legislative and company procedures
• Interpreting service drawings and documenting site activities

Operational Competence

• Using powered tools, hand tools and equipment safely
• Maintaining clean, safe and compliant work environments
• Communicating effectively with supervisors, layers and operational teams

Pathway Options
Learners complete one of two specialist pathways; both cover the same core service-layer competencies:

1. Service Layer (Self Lay)

• Focus on installing and maintaining gas services up to 63mm, including:
• Establishing safe work areas
• Excavating and supporting trenches
• Electrofusion jointing
• Performing mains connections and commissioning
• Installing and testing gas services up to 63mm
• Operating tools and equipment for highway and construction environments

2. Service Layer (Distribution)

• Emphasis on service installation activities for distribution networks, including:
• Safe excavation and reinstatement
• Jointing processes and testing requirements
• Commissioning and service connection to mains
• Maintaining effective working relationships
• Installing gas services up to 63mm in varied environments

Training is delivered through classroom learning, practical workshop sessions and portfolio development to ensure full competence in real-world tasks.