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Gas Technical Standards Committee (GTSC)

The GTSC's scope of work covers all aspects of the supply and usage of natural gas, liquefied petroleum gas (LPG), liquefied natural gas (LNG), renewable gas (biomethane, bio LPG) and hydrogen.  The membership of the committee is composed of key stakeholders/collective bodies that provide an authoritative and representative voice or policy role in the gas sector.  GTSC members contribute their knowledge and expertise on a voluntary basis and advises the NSAI on what Irish standards and Codes of Practice are necessary for products and processes used in the gas industry, with particular regard to safety.  The GTSC also supports the development of European (CEN) and International (ISO) gas related standards.  

The GTSC is made up of a Central Committee governing the 7 sub-committees that are listed below.

Latest News

December 2021 |  The first NSAI hydrogen academic webinar was held on the 30th November 2021 highlighting the opportunities for our national academic research community to link up with standards development in the area of hydrogen and help bridge the standardisation gaps that exist. Research work undertaken in Ireland can have a real impact on the development of  technical standards right across Europe.

Watch the NSAI hydrogen academic webinar

NSAI will continue engagement with new stakeholders across academic, government and industry sectors. 
Contact Alice Hanly or Niamh Conroy if you have any questions or would like to participate in standards work.

June 2021 | NSAI and Gas Networks Ireland started a two-year secondment to work on standardisation activities relating to hydrogen. Recognising the fuel as a relatively new area with great potential to be adopted nationwide, a Hydrogen Standardisation Expert was appointed.

Their role is to increase Ireland’s pool of knowledge relating to hydrogen standardisation, drawing on the widest possible panel of experts including Irish academia, think tanks and research bodies. Collaborating with NSAI’s counterparts across Europe, these experts will then work to create new and improved suite of hydrogen Standards.

Read Energy Ireland's Standards for climate action: Where green innovation meets policy (October 2021)

Register your interest through our online form Get Involved in Standards Development

Committee Member Login

Committee Members can login using the ISOlutions Portal

Get in Touch 

For further information contact: 

Alice Hanly, GTSC Technical Secretary
Direct +353 1 807 3880 | Email: Alice Hanly | LinkedIn

Niamh Conroy, Hydrogen Standardisation Expert
Email Niamh Conroy | LinkedIn

GTSC sub-committees

TC 1 supports the development of national and international standards in the areas of the distribution of natural gas, LPG, renewable gas (biomethane, bio LPG) and hydrogen up to 16 bar. This includes services, distribution, PE pipe and fittings, and regulators.

National standards developed by this committee include:

  • I.S. 329, Gas distribution mains
  • S.R. 12007-5, Installation of Gas Service Pipes
  • I.S. 370, Colour code for buried plastics piping
  • I.S. 822, Gas pressure regulating installations on service pipelines

Get the latest standards verisons on www.standards.ie

European and International Committees Mirrored

(with the addition of committees relating to hydrogen)

  • CEN/TC 155                       Plastics piping systems and ducting systems
  • CEN/TC 234                       Gas infrastructure
  • CEN/TC 237                       Gas meters
  • CEN/CLC/JTC 006             Hydrogen in energy systems
  • ISO/TC 138/SC 4               Plastics pipes and fittings for the supply of gaseous fuels
  • ISO/TC 197                         Hydrogen technologies

TC 2 supports the development of national and international standards in the areas of installations and appliances for natural gas, LPG and renewable gas (biomethane, bio LPG) and hydrogen in domestic and non-domestic premises.

National standards developed by this committee include:

  • I.S. 813, Domestic gas installations Edition
  • I.S. 820, Non-Domestic gas installations
  • SWiFT 8, Specific requirements for electrical apparatus for the detection of Carbon Monoxide (CO) in domestic premises

Get the latest standards versions on www.standards.ie

European and International Committees Mirrored

(with the addition of committees relating to hydrogen)

TC 2 monitors and participates in relevant work within the following committees:

  • CEN/TC 234                       Gas Infrastructure
  • CEN/TC 109                       Central heating boilers using gaseous fuels
  • CEN/TC 181                       Dedicated liquefied petroleum gas appliances
  • CEN/TC 49                          Gas cooking appliances
  • CEN/TC 58                          Safety and control devices for burners and appliances burning gaseous or liquid fuels
  • CEN/TC 62                          Independent gas-fired space heaters
  • CEN/CLC/JTC 006             Hydrogen in energy systems
  • ISO/TC 197                         Hydrogen technologies

Click the link CEN/TC to access details on: General / Structure / Work Programme / Published Standards. Enter the committee number in the field Search list:

Click on link ISO/TC to access details on: ISOTC Working Area / Published Standards / Standards Under Development. Scroll to find the TC you are interested in.

TC 5 supports the development of national and international standards in the areas of the transmission of natural gas, LPG, renewable gas (biomethane, bio LPG) and hydrogen through pipelines and pipeline installations from 16 bar upwards. This includes compressor stations.

National standards developed by this committee include:

  • I.S. 328, Code of Practice for Gas Transmission Pipelines and Pipeline Installations

Get the latest standards versions on www.standards.ie

European and International Committees Mirrored

(with the addition of committees relating to hydrogen)

TC 5 monitors and participates in relevant work within the following committees:

  • CEN/TC 234                      Gas infrastructure
  • CEN/CLC/JTC 6            Hydrogen in energy systems
  • ISO/TC 067/SC 02             Pipeline transportation systems
  • ISO/TC 197                        Hydrogen technologies

Click the link CEN/TC to access details on: General / Structure / Work Programme / Published Standards. Enter the committee number in the field Search list:

Click on link ISO/TC to access details on: ISOTC Working Area / Published Standards / Standards Under Development. Scroll to find the TC you are interested in.

TC 6 supports the development of national and international standards in the areas of the use of CNG, LNG and hydrogen in vehicles and associated refuelling stations.

This excludes CNG, LNG and Hydrogen propulsion systems in vehicles.

European and International Committees Mirrored

(with the addition of committees relating to hydrogen and LNG)

TC 6 monitors and participates in relevant work within the following committees:

  • CEN/TC 326                       Natural Gas Vehicles - Fuelling and Operation
  • CEN/TC 286                       LPG equipment and accessories
  • CEN/TC 268                       Cryogenic vessels and specific hydrogen technologies applications
  • CEN/CLC/JTC 006             Hydrogen in energy systems
  • ISO/TC 197                         Hydrogen technologies

Click the link CEN/TC to access details on: General / Structure / Work Programme / Published Standards. Enter the committee number in the field Search list:

Click on link ISO/TC to access details on: ISOTC Working Area / Published Standards / Standards Under Development. Scroll to find the TC you are interested in.

TC 8 supports the development of national and international standards in the area of LPG and LNG storage, LPG cylinder filling, LPG refuelling facilities and LNG onshore installations and equipment.

This excludes LNG and LPG propulsion systems in vehicles.

National standards developed by this committee include:

  • I.S. 3213, Code of Practice for the Storage of LPG Cylinders and cartridges
  • I.S. 3216, Code of practice – Bulk storage of Liquefied Petroleum Gas (LPG)

Get the latest standards versions on www.standards.ie

European and International Committees Mirrored

(with the addition of committees relating to LNG)

TC 8 monitors and participates in relevant work within the following committees:

  • CEN/TC 268         Cryogenic vessels and specific hydrogen technologies applications
  • CEN/TC 282         Installation and equipment for LNG
  • CEN/TC 286         LPG equipment and accessories
  • ISO/TC 067/SC 09         Liquefied natural gas installations and equipment

Click the link CEN/TC to access details on: General / Structure / Work Programme / Published Standards. Enter the committee number in the field Search list:

Click on link ISO/TC to access details on: ISOTC Working Area / Published Standards / Standards Under Development. Scroll to find the TC you are interested in.

TC 9 is the national mirror committee for CEN/TC 286 "LPG equipment and accessories

European and International Committees Mirrored

TC 9 monitors and participates in relevant work within the following committees:

  • CEN/TC 23/SC 1         Cylinder design
  • CEN/TC 23/SC 3         Operational requirements
  • CEN/TC 286                LPG equipment and accessories
  • CEN/TC 296                Tanks for the transport of dangerous goods
  • ISO/TC 058/SC 02       Gas cylinders - Cylinder fittings
  • ISO/TC 058/SC 04       Gas cylinders - Operational requirements for gas cylinders

Click the link CEN/TC to access details on: General / Structure / Work Programme / Published Standards. Enter the committee number in the field Search list:

Click on link ISO/TC to access details on: ISOTC Working Area / Published Standards / Standards Under Development. Scroll to find the TC you are interested in.

TC 11 supports the development of national and international standards in the areas of gas quality including the analysis of natural gas, renewable gas and hydrogen.

European and International Committees Mirrored

TC 11 monitors and participates in relevant work within the following committees:

  • CEN/TC 234                  Gas infrastructure
  • CEN/TC 408                  Natural gas and biomethane for use in transport and biomethane for injection in the natural gas grid
  • ISO/TC 193/SC 01        Analysis of natural gas
  • ISO/TC 197                   Hydrogen technologies

Click the link CEN/TC to access details on: General / Structure / Work Programme / Published Standards. Enter the committee number in the field Search list:

Click on link ISO/TC to access details on: ISOTC Working Area / Published Standards / Standards Under Development. Scroll to find the TC you are interested in.