The Transmission Access Commercial Operations System (TACOS) IT system will support the implementation of the Gas Transmission Access Code.

The Gas Transmission Access Code will go live on 01 October 2019 should the Gas Industry Company release a positive Final Assessment Paper at the end of February 2019.

The documents below are functional specification documents for TACOS. These documents are released to assist stakeholders in early preparation for implementation of GTAC prior to GIC Final Assessment. In releasing this documentation we assume all users are cognisant that all implementation works prior to the GIC’s Final Assessment will be at risk if the GIC’s Final Assessment is not positive.

There may be some changes prior to the final set of documents being released to meet the requirements of the Maui Pipeline Operations Code change request on April 10. We therefore caution stakeholders against relying on this preliminary version of the documentation. This page will be updated to reflect new versions as they become available.

The following sections of the document require further technical input and are not included at this point:

F.05_Metering_Gas_Quality_&_Line_Pack_2.0A
F.07_Capacity_Allocation_&_Curtailment_2.0A
F.08_Operating_Imbalances_&_Mismatches_2.0A

Links to Documents

F.00_Introduction_2.0A
F.01_Security_&User_Access_2.0A
F.02_Users_Parties&Contract_2.0A
F.03_Invoices&Fees_2.0A
F.04_Interconnection_Points_Pipeline&Zones_2.0A
F.06_Forecasting_Nominations &Scheduling_2.0A
F.09_Trades&Auctions_2.0A
F.10_Notifications &_Publications_2.0A
F.12_Audit_2.0A
F.13_Interfaces Consolidated