Cabinet of Ministers Regulations No. 650 in 2016 (4 October. No 50 5) biometān requirements and gaseous state into liquefied natural gas for transport to enter and natural gas transmission and distribution system Issued under the Energy Act, article 110 sixth 1. determines the technical and security requirements and biometān gaseous state into liquefied natural gas and transportation of natural gas to enter the transmission and distribution systems, as well as gas quality characteristics to enter and transport of gas, natural gas transmission and distribution system would be safe. 2. the terms used in the rules: pamatgāz 2.1-natural gas transmission and distribution system (hereinafter referred to as the natural gas system) transported natural wells for natural gas; 2.2. aizvietotājgāz – biometān and gaseous state into the liquefied natural gas at the same pressure, temperature and gas installations in the same framework show the identical pamatgāz combustion characteristics. You can use Aizvietotājgāz instead of pamatgāz; 2.3. additive gas – biometān, which is different from the quality characteristics of pamatgāz and that mixing with the pamatgāz obtains the necessary quality characteristics or mixing with conditioning gas acquires aizvietotājgāz; 2.4. conditioning of gas-gas or gas mixture with the corresponding combustion technical parameters and values that are mixing with additive gas acquires aizvietotājgāz; 2.5. system service agreement-agreement concluded with the system operator of the natural gas system users, system services and other services; 2.6. the mixing point, the place where the gas additive are homogeneous mixing with conditioning or pamatgāz, gets a aizvietotājgāz; 2.7. prepare point-the place where aizvietotājgāz of odorizācij is carried out, as well as its pressure and temperature distribution system operator level; 2.8. attachment point-the place where aizvietotājgāz is entered in the natural gas transmission system or the aizvietotājgāz odorizēt is entered into the natural gas distribution system. 3. Enter Aizvietotājgāz in the system of natural gas in accordance with the service agreement. 4. The system provides natural gas aizvietotājgāz enter the system according to the requirements of this regulation. 5. The Ministry of economy in cooperation with the Technical Committee for Standardization recommends a national standardisation body the standard list of applicable requirements of these regulations (hereinafter referred to as the applicable standards). The national standardization body of applicable standard list published on its official tīmekļvietn. 6. Natural gas transmission system, minimum pressure of 25 bar. To ensure the input of aizvietotājgāz natural gas transmission system, its pressure must exceed the actual pressure of pamatgāz not more than 5 bar. 7. The natural gas distribution system operator depending on the distribution system working pressure in a given connection point determines the input pressure of aizvietotājgāz's work, which must be greater than the actual pressure of pamatgāz not more than 10% of the actual pressure of pamatgāz in this connection point. 8. the user shall ensure that the construction of the system of gāzapgād, which do not allow to enter the gas, the natural gas system in which the quality characteristics do not match this rule requirements set out in the annex. 9. System user responsibility to ensure that the natural gas system in the treatment of aizvietotājgāz of ammonia and amines, as well as the homogeneous mixing of the mixture formation. 10. The system supports blending and preparation of natural gas obtained and entered in the system in compliance with this provision of the aizvietotājgāz specified in the annex and be entered in the system of natural gas transported aizvietotājgāz quality characteristics. 11. System user access point continually make natural gas system that can be entered into the aizvietotājgāz of inventory and establish quality characteristics by using the appropriate certification and verification of measuring equipment, as well as provide this data accumulation and the continuous remote access to aggregated data. Prime Minister Māris kučinskis Deputy Prime Minister, Minister of economy of Arvil Ašeraden annex Cabinet 4 October 2016. Regulations No 650 natural gas transmission and distribution system and that the quality of the transported aizvietotājgāz characteristics no p. k. Parameters measurement value 1. Number of Vobb (index) – WS, b the base temperature (combustion/metering) 25/20 c MJ/m3-m3 47,02 51,98 kcal/kWh/m³ 13,06 11231-12415-14,44 2. The highest calorific value (GCV) and 101.325 kPa 20 ° C base temperature (combustion/metering) 25/20 ° C MJ/m3 ≥ ≥ 34.87 kcal/m3/kWh per m3 9.69 8329 ≥ 3. Lower calorific value (NCV) and 101.325 kPa 20 ° C base temperature (combustion/metering) 25/20 ° C MJ/m3 ≥ 31.82 kcal/m3 ≥ ≥ 4 kWh/m3 8.83 7600. Relative density: 0.55-0.70 d 5. Total sulphur-S (no odorant) ≤ 0.03 mg/m3 6. Hydrogen sulfide + H2 + karbonilsulfīd COS g/m3 ≤ 0.007 7. Merkaptān-RH (no odorant) g/m3 ≤ 0.016 8. Methane – CH4 Mole% ≥ 90 9. Nitrogen-N2 ≤ 3 10 mol%. Oxygen-O2 mol% ≤ ≤ 1,0 * 0.02 * 11. Carbon dioxide-CO2 mol% ≤ 2.5 * ≤ 4,0 ** 12. Methane number ≥ 65 13. Mechanical impurities g/m3 ≤ 14 0.001. The hydrocarbon dew point HC DP, at 1-70 bar ° C ≤-2 15. The water dew point-H2O bar at 40 ° C DP, ≤-10 16. Hydrogen-H2 ≤ 0.1 mol% 17. Odorant in mg/m3 ≥ 3 Ballroom ≥ 3 notes. 1. the natural gas to be transported and that the quality of the aizvietotājgāz characteristics. 2. The natural gas distribution system to be entered and transported aizvietotājgāz quality characteristics, where the distribution system is not connected to the underground gas storage and not linked to other countries in the gāzapgād system.
Deputy Prime Minister, Minister of economy of Ašeraden of Arvil