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

Course Duration:

Ten Days

Format:

In-Person

Location:

Stoneleigh Park

Home > Training Courses > NCO Gas & Water Training Courses > City & Guilds Level 2 Diploma in Network Construction Operations – NCO2 GAS Main Layer

Course Overview

The City & Guilds Level 2 Diploma in Network Construction Operations – NCO2 Gas Main Layer training course equips operatives with the technical skills and knowledge required to install, maintain, and commission gas mains on the public network. Building on the foundation learned in NCO1, this qualification develops practical competence in excavation, pipe-laying, jointing, testing, and reinstatement, while reinforcing essential safety practices and regulatory compliance.

Delegates gain hands-on experience in both classroom and field environments, learning to interpret construction drawings, operate tools and plant safely, and work effectively within teams on live gas network projects. This Level 2 qualification is recognised by the Energy & Utility Skills Register (EUSR) and forms a key step in progressing to advanced operational or supervisory roles within the gas network sector.

Course Duration:

Ten Days

Format:

In-Person

Location:

Stoneleigh Park

Certification Awarded

City & Guilds NCO2 Gas Main Layer

Valid for

Five Years

Awarding Body

Who should Attend This Course

Gas operatives progressing from NCO1 to main layer responsibilities
Individuals working on gas main construction or maintenance
Employers seeking formal qualification pathways for gas network staff
Candidates seeking recognised certification to work on live gas mains

Prerequisites

Good understanding of spoken and written English.
Valid form of ID
While prior experience in the gas industry is beneficial, it is not mandatory. However, candidates must obtain the EUSR Safety, Health, and Environmental Awareness (SHEA) Gas Passport before accessing construction sites.

What To Have With You To Attend The Course

Photo ID

Assessment

Assessment is by means of practical site assessments, written tasks, and portfolio evidence.

Course Content

The NCO2 Gas Main Layer course covers the essential knowledge and practical skills required to safely and effectively install and maintain gas mains, including:

Gas Main Installation Fundamentals

Understanding mains pipeline systems, components, and specifications
Selecting and handling approved materials and components
Reading and interpreting construction drawings and site plans

Excavation, Support & Reinstatement

Preparing and excavating trenches safely
Implementing shoring, support, and reinstatement procedures
Maintaining compliant and safe work areas

Pipe-Laying, Jointing & Connections

Installation of gas mains using approved jointing methods
Connections to existing network infrastructure
Commissioning and testing mains installations

Testing & Purging

Pressure testing procedures for newly installed mains
Purging and preparing the system for safe operation
Identifying and rectifying defects or faults

Site Safety & Compliance

Working safely near live gas systems
Hazard identification, risk assessment, and environmental controls
Adhering to regulatory, legislative, and company standards

Operational Competence

Using powered tools, hand tools, and small plant safely
Coordinating with supervisors, colleagues, and contractors
Maintaining clear and accurate documentation for site works

Additional Information

Progression Opportunities
Completion of NCO2 Gas Main Layer enables progression to:

Supervisory roles within gas network operations
Advanced technical or specialist positions in mains and service construction
Further NCO or engineering qualifications within the utility sector

Frequently Asked Questions

What is the NCO2 Gas Main Layer qualification?

A Level 2 City & Guilds diploma that certifies your ability to install, maintain, and test gas mains on the public network.

Do I need NCO1 before enrolling?

Yes. You must hold an NCO1 Gas Assistant qualification or demonstrate equivalent experience.

How long does the course take?

The training and assessments usually span several weeks and include both centre-based learning and on-site practical assessment.

Is this qualification recognised by the industry?

Absolutely. It’s City & Guilds accredited and aligns with EUSR and utility contractor requirements.

Does this course include service laying?

No, this course focuses exclusively on gas main laying. For service layer training, please refer to our dedicated NCO2 Service Layer course.

Ready to complete your booking? If you have all of your delegate information and photo ID's available, please login to your account before continuing. If you do not have everything just yet, you can still continue as a guest.

Book City & Guilds Level 2 Diploma in Network Construction Operations – NCO2 GAS Main Layer Course

Choose date / location

Enquire About Course Dates

Interested in this course? Complete the form below and we’ll contact you with upcoming dates and availability.