Common use of Rules & Methodologies Clause in Contracts

Rules & Methodologies. 4.4.1 Requirements concerning the availability, reliability and redundancy of the technical infrastructure Technical infrastructure that is required for the processes referred to in the process activation structure (see section 4.2.1) include: • Digital control systems such as o SCADA/LFC systems; o Information systems like the Nordic Operation Information System (NOIS); and o Telephone/messaging systems. • Communication links between the Digital control systems of the Nordic TSOs. SOGL 143(4) SOGL 145(6) SOGL 119(1)(e) SOGL 151(2)-(3) SOGL 118(1)(p) SOGL 119(1)(f) SOGL 151(1) 4.4.1.1 Availability, reliability and redundancy of Digital control systems for frequency containment process and frequency restoration process SOGL 118(1)(p) SOGL 119(1)(f) Digital control systems required for frequency containment process and frequency restoration process have to be available seven (7) days a week and twenty-four (24) hours per day during the whole year. The TSOs shall ensure that the functions in these systems that are related to the frequency containment process and frequency restoration process run with a minimum of interruptions twenty-four (24) hours per day through the year. The hardware and software architecture and application design of the Digital control systems required for frequency containment process and frequency restoration process shall be such that normal daily and monthly maintenance does not require system shutdowns and system can be used uninterruptedly. However, during planned maintenance, for example in major hardware or software upgrades, downtime less than 1−2 hours can still be considered acceptable not more than once per month. SOGL 151(2)(b) The availability of the functions in these systems that are related to the frequency containment process and frequency restoration process shall be at least 99,5 % as an average over the calendar year, excluding planned maintenance. Short occasional interruptions (10−20 minutes) are allowed once a week. Planned maintenance pauses are acceptable once a month. All TSOs shall be informed of planned maintenance breaks at least twenty-four (24) hours in advance. Planned maintenance can be cancelled at all time on request from one of the TSOs. SOGL 151(2)(b) 4.4.1.2 Availability, reliability and redundancy of Communication links between Digital control systems for frequency containment process and frequency restoration process SOGL 118(1)(p) SOGL 119(1)(f) The communication lines between the Nordic TSOs and between the Nordic TSOs and other European TSOs are part of the so-called Electronic Highway (EH). The availability and redundancy of the EH are described on a European level. SOGL 151(2)(c) 4.4.1.3 Communication protocols SOGL 151(2)(d) Communication protocols that are used between the Nordic TSOs are Elcom and Tase 2.

Rules & Methodologies. 4.4.1 Requirements R26B equirements concerning the availability, reliability and redundancy of the technical infrastructure Technical infrastructure that is required for the processes referred to in the process activation structure (see section 4.2.1) include: • Digital control systems such as o SCADA/LFC systems; o Information systems like the Nordic Operation Information System (NOIS); and o Telephone/messaging systems. • Communication links between the Digital control systems of the Nordic TSOs. SOGL 143(4) SOGL 145(6) SOGL 119(1)(e) SOGL 151(2)-(3) SOGL 118(1)(p) SOGL 119(1)(f) SOGL 151(1) 4.4.1.1 Availability, reliability and redundancy of Digital control systems for frequency containment process and frequency restoration process SOGL 118(1)(p) SOGL 119(1)(f) Digital control systems required for frequency containment process and frequency restoration process have to be available seven (7) days a week and twenty-four (24) hours per day during the whole year. The TSOs shall ensure that the functions in these systems that are related to the frequency containment process and frequency restoration process run with a minimum of interruptions twenty-four (24) hours per day through the year. The hardware and software architecture and application design of the Digital control systems required for frequency containment process and frequency restoration process shall be such that normal daily and monthly maintenance does not require system shutdowns and system can be used uninterruptedly. However, during planned maintenance, for example in major hardware or software upgrades, downtime less than 1−2 hours can still be considered acceptable not more than once per month. SOGL 151(2)(b) The availability of the functions in these systems that are related to the frequency containment process and frequency restoration process shall be at least 99,5 % as an average over the calendar year, excluding planned maintenance. Short occasional interruptions (10−20 minutes) are allowed once a week. Planned maintenance pauses are acceptable once a month. All TSOs shall be informed of planned maintenance breaks at least twenty-four (24) hours in advance. Planned maintenance can be cancelled at all time on request from one of the TSOs. SOGL 151(2)(b) 4.4.1.2 Availability69BAvailability, reliability and redundancy of Communication links between Digital control systems for frequency containment process and frequency restoration process SOGL 118(1)(p) SOGL 119(1)(f) The communication lines between the Nordic TSOs and between the Nordic TSOs and other European TSOs are part of the so-called Electronic Highway (EH). The availability and redundancy of the EH are described on a European level. SOGL 151(2)(c) 4.4.1.3 Communication protocols SOGL 151(2)(d) Communication protocols that are used between the Nordic TSOs are Elcom and Tase 2.

Rules & Methodologies. 4.4.1 Requirements concerning the availability, reliability and redundancy of the technical infrastructure Technical infrastructure that is required for the processes referred to in the process activation structure (see section 4.2.1) include: • Digital control systems such as o SCADA/LFC systems; o Information systems like the Nordic Operation Information System (NOIS); and o Telephone/messaging systems. • Communication links between the Digital control systems of the Nordic TSOs. SOGL 143(4) SOGL 145(6) SOGL 119(1)(e) SOGL 151(2)-(3) SOGL 118(1)(p) SOGL 119(1)(f) SOGL 151(1) 4.4.1.1 Availability, reliability and redundancy of Digital control systems for frequency containment process and frequency restoration process SOGL 118(1)(p) SOGL 119(1)(f) Digital control systems required for frequency containment process and frequency restoration process have to be available seven (7) days a week and twenty-four (24) hours per day during the whole year. The TSOs shall ensure that the functions in these systems that are related to the frequency containment process and frequency restoration process run with a minimum of interruptions twenty-four (24) hours per day through the year. The hardware and software architecture and application design of the Digital control systems required for frequency containment process and frequency restoration process shall be such that normal daily and monthly maintenance does not require system shutdowns and system can be used uninterruptedly. However, during planned maintenance, for example in major hardware or software upgrades, downtime less than 1−2 hours can still be considered acceptable not more than once per month. SOGL 151(2)(b) The availability of the functions in these systems that are related to the frequency containment process and frequency restoration process shall be at least 99,5 % as an average over the calendar year, excluding planned maintenance. Short occasional interruptions (10−20 minutes) are allowed once a week. Planned maintenance pauses are acceptable once a month. All TSOs shall be informed of planned maintenance breaks at least twenty-four (24) hours in advance. Planned maintenance can be cancelled at all time on request from one of the TSOs. SOGL 151(2)(b) 4.4.1.2 4.1.2 Availability, reliability and redundancy of Communication links between Digital control systems for frequency containment process and frequency restoration process SOGL 118(1)(p) SOGL 119(1)(f) The communication lines between the Nordic TSOs and between the Nordic TSOs and other European TSOs are part of the so-called Electronic Highway (EH). The availability and redundancy of the EH are described on a European level. SOGL 151(2)(c) ) 4.4.1.3 Communication protocols SOGL 151(2)(d) Communication protocols that are used between the Nordic TSOs are Elcom and Tase 2.