The technical capacity of all remaining available gas infrastructure in the event of disruption of the single largest gas infrastructure shall be at least equal to the sum of the total daily gas demand of the calculated area during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years. The results of the N 1 formula, as calculated below, shall be at least equal to 100 %. – Calculation method of the N-1 formula , N 1 100 % – ≥ The parameters used for the calculation shall be clearly described and justified. For the calculation of the EPm, a detailed list of the entry points and their individual capacity shall be provided. Definitions of the parameters of the N-1 formula area’ means a geographical area for which the N 1 formula is calculated, as ‘Calculated – determined by the competent authority. Demand-side definition means the total daily gas demand (in mcm/d) of the calculated area during a day of ‘Dmax’ exceptionally high gas demand occurring with a statistical probability of once in 20 years. Supply-side definitions technical capacity of entry points (in mcm/d), other than production, LNG and storage ‘EPm’: facilities covered by Pm, LNGm and Sm, means the sum of the technical capacity of all border entry points capable of supplying gas to the calculated area. maximal technical production capability (in mcm/d) means the sum of the maximal ‘Pm’: technical daily production capability of all gas production facilities which can be delivered to the entry points in the calculated area. maximal technical storage deliverability (in mcm/d) means the sum of the maximal ‘Sm’: technical daily withdrawal capacity of all storage facilities which can be delivered to the entry points of the calculated area, taking into account their respective physical characteristics.
The technical capacity of all remaining available gas infrastructure in the event of disruption of the single largest gas infrastructure shall be at least equal to the sum of the total daily gas demand of the calculated area during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years. The results of the N – 1 formula, as calculated below, shall be at least equal to 100 %. Calculation method of the N-1 formula , N – 1 ≥ 100 % The parameters used for the calculation shall be clearly described and justified. For the calculation of the EPm, a detailed list of the entry points and their individual capacity shall be provided. Definitions of the parameters of the N-1 formula ‘Calculated area’ means a geographical area for which the N – 1 formula is calculated, as determined by the competent authority. Demand-side definition ‘Dmax’ means the total daily gas demand (in mcm/d) of the calculated area during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years. Supply-side definitions ‘EPm’: technical capacity of entry points (in mcm/d), other than production, LNG and storage facilities covered by Pm, LNGm and Sm, means the sum of the technical capacity of all border entry points capable of supplying gas to the calculated area. ‘Pm’: maximal technical production capability (in mcm/d) means the sum of the maximal technical daily production capability of all gas production facilities which can be delivered to the entry points in the calculated area. ‘Sm’: maximal technical storage deliverability (in mcm/d) means the sum of the maximal technical daily withdrawal capacity of all storage facilities which can be delivered to the entry points of the calculated area, taking into account their respective physical characteristics.
ITRE_AG(2017)604755_EN.docx