Butt FusionA method of joining plastic pipes by simultaneously heating the ends of two plastic pipes, or a pipe and a fitting component, until the contact surfaces melt, then pushing the molten surfaces together with a controlled force until they form a homogeneous joint as strong as plastic pipe itself.
CSEPConnected System Exit Point
A point on a network where a connection is made to transfer gas from one network into another.
CSCSConstruction Skills Certification Scheme
ElectrofusionA method of joining plastic pipes using special fittings that have built-in electric heating elements that are used to weld the joint together.
EMSEnvironmental Management System
Equivalent LengthThe equivalent length of a pipe fitting is the length of pipe that would give rise to the same pressure drop as the fitting itself. This is useful when calculating the pressure loss in a pipe, taking the various fittings into account
EUEuropean Union
EU SkillsEnergy & Utility Skills is an employer-led membership organisation that helps to ensure the gas, power, waste management and water industries have the skills they need – now and in the future.
GASWorkS 10Network modelling software produced by Bradley B. Bean, used for modelling natural gas piping systems.
GDPRGeneral Data Protection Regulation
A regulation introduced by the EU that came into effect on 25th May 2018.
GIRSGas Industry Registration Scheme
GIRS-registered providers are able to project-manage, design and construct new gas network infrastructure, dependent on the scope of their accreditations. Lloyd’s Register EMEA operate the registration scheme on behalf of the UK Gas Transporters
HDPEHigh-density Polyethylene, also known as PE100.
IGE/TD/4Institution of Gas Engineers and Managers / Technical Document / 4
The gas industry standard for PE and steel gas services and service pipework. It is one of a number of technical standards produced by the Institution of Gas Engineers and Managers.
IGEMInstitution of Gas Engineers and Managers
A chartered professional body, licensed by the Engineering Council, serving a wide range of professionals in the UK and the international gas industry through Membership, events and a comprehensive set of Technical Standards.
IGTIndependent Gas Transporter
IRQAOInternational Register of Quality Assessed Organisations
An easy-to-check online register of organisations that hold quality certifications. We hold ISO 9001 certificate number 313612019 and ISO 14001 certificate number 313622019. You can check these certificates from our Home page or our Certifications page.
ISO 9001International Standards Organisation standard number 9001
The international standard for Quality Management Systems (QMSs).
ISO 14001International Standards Organisation standard number 14001
The international standard that specifies the requirements for an effective Environmental Management System (EMS).
Lloyd’s Register Utility SchemesLloyd’s Register EMEA operate utility registration schemes on behalf of the UK Gas Transporters enabling them to project-manage, design and construct utility infrastructure.
MDPEMedium-density Polyethylene, also known as PE80.
NVQNational Vocational Qualification
OfgemThe Office of Gas and Electricity Markets, whose objective is to protect the interests of existing and future electricity and gas consumers.
PE PipePolyethylene Pipe
The yellow polyethylene pipe used in the construction of new gas networks.
QMSQuality Management System
RIIORevenue = Incentives + Innovation + Outputs
A model of network regulation.
RIIO-GD1Revenue = Incentives + Innovation + Outputs — Gas Distribution 1
The first gas distribution price control review to use the RIIO model of network regulation. This price control began on 1st April 2013 and runs for eight years to 2021.
SCOSafe Control of Operations
SDRStandard Dimension Ratio
This describes the correlation between the pipe diameter and the thickness of the pipe wall. Common gas pipes are SDR11 and SDR17. Pipes with a lower SDR can withstand higher pressures.
SHEASafety, Health and Environment Awareness
A qualification gained by the successful completion of a one-day course and assessment for utility workers required to access construction sites. The skills card bears the CSCS (Construction Scheme Certification Scheme) logo.
UIPUtility Infrastructure Provider
The commonly used name given to contractors who are registered under a utility scheme, such as GIRS.