DESFA shall provide to the Transmission Users the following Interruptible Base Transmission Services (Interruptible Transmission Services), as defined in Article 2 par. 1 of Regulation (EC) 715/2009, in the most economic, transparent and direct manner, without discrimination between Users, as follows:
A) Receipt by DESFA of Natural Gas quantities from one or more Entry Points at an Interruptible Base, execution of the necessary measurements through the metering devices at these Entry Points, and transmission of the Natural Gas quantities through the NNGTS.
or
B) Transmission of Natural Gas Quantity through the NNGTS, delivery of the Natural Gas Quantity by DESFA to one or more Exit Points, Reverse Flow Exit Points at an Interruptible Base, and performance of the necessary measurements through the metering devices at these Exit Points, Reverse Flow Exit Points.
Interruptible Transmission Services are provided by DESFA at an Entry Point and/or Reverse Flow Exit Point at which all of the Delivery/Receipt Capacity and all of the Conditional Delivery/Receipt Capacity on an Firm Basis has already been booked.
For the provision of Interruptible Transmission Services, the submission of a Request (Interruptible Service Request) on behalf of the User for the booking of Interruptible Transmission Capacity and its approval by DESFA (Approved Interruptible Service Application) is required.
Refer to Network Code for the relevant provisions (Chapter 2A) on Interruptible Transmission Service procedures.