Overview of Matters of Gas Safety (MoGS), Accredited Certification Scheme (ACS) and other Routes to competence
Before being accepted on the Gas Safe Register, engineers are required to demonstrate their competence in the type of work they wish to be registered for. Each work type has specific ‘Matters of Gas Safety’ that need to be demonstrated.
The Matters of Gas Safety criteria can either be demonstrated within a qualification or via the Nationally Accredited Certification Scheme (ACS).
Gas Safe Registered engineers are required to renew their certificates of competency every 5 years, and this can be done either by ACS renewal or via the Group Competency Scheme
Where a Gas Safe Registered engineer wishes to extend their competencies to additional appliances or work types, they will need to complete training prior to demonstrating competence via ACS.
Gas Safe registration categories (code and description) and MoGS assessment criteria documents
For each type of work there is a ‘core competency’ and then additional appliance competencies for example to work on boilers in a domestic property the engineer will require the following competencies: CCN1 (core domestic gas safety) and CENWAT (Domestic Central Heating Boilers)
The Matters of Gas Safety criteria are structured under the following categories:
- Domestic
- Meters and Emergency Response
- Liquid Petroleum Gas (LPG)
- Non-Domestic
Changeover to LPG
Changeover to Non-Domestic
Non-Domestic Appliances
Non-Domestic Pipeline & Commissioning
Non-Domestic Core
LPG Appliances
LPG Core
ESP & Meter Installer Core
Domestic Appliances
Changeover to LPG
Changeover to Non-Domestic
Non-Domestic Appliances
Non-Domestic Pipeline & Commissioning
Non-Domestic Core
LPG Appliances
LPG Core
ESP & Meter Installer Core
Domestic Appliances
ACS Gas Assessment Centre Directory
This document provides you, the Gas Safe Registered Engineer, with a directory of ACS centres throughout the UK to help you decide where to take your five-yearly re-assessments.
You can also contact these centres should you wish to undertake assessments that will enable you to extend your range or scope for Gas Safe registrations. Training is not a pre-requisite for re-assessment but it is required for an extension to range or scope.
Guidance Notes 8 (GN8)
Guidance Note 8 (GN8) details the entry routes to ACS Assessment and the requirements for extending scope or range of work.
Approved Codes of Practice (ACoPs) and requirements
Contact Us
For more information or to get involved with the standards setting body, please contact Richard Harper, Contract Manager (Gas)
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