Laboratory
Quality system
Reganosa’s laboratory is accredited in accordance with the UNE-EN ISO/IEC 17025:2017. This accreditation (number 1179/LE2273) was granted by ENAC (National Accreditation Entity) and its scope can be found at ENAC website. Reganosa’s accreditation implies recognition of the technical competence for conducting Tests in the Industrial Sector. This implies the recognition of the validity of laboratory results by clients, facilitates the exchange of reliable information and contributes to harmonize procedures. It is a further step in the pursuit of excellence in energy measurement entrusted to us by our customers.
NG/LNG QUALITY ANALYSIS SERVICE
Our laboratory provides analysis services for LNG compounds, natural gas and sulphur compounds, both for the users of our facilities and for external companies and entities. To this end, we have perfectly calibrated and verified equipment.
As well as analytical activities, our laboratory provides a comprehensive consultancy service.
Reganosa Laboratory has a documented process to receive, evaluate and make decisions on complaints. This process is in the laboratory quality manual. The description of the handling process for complaints shall be available to any interested party on request.
Quality of gas
The quality specifications of the gas introduced into the Gas System are set out in the Detailed Protocol 01 “Measurement, Quality and Odorization of gas”.
Capacities are expressed under the reference conditions [ GCV at 0ºC; V (0ºC, 1.01325 bar)].
The following table lists the quality specifications established in the detailed protocol that are to be met by any gas introduced in the gas system’s entry points must meet are set out in the following table.
| Property | Unit | Minimum | Maximum |
|---|---|---|---|
| Wobbe index | KWh/m3 | 13.403 | 16.058 |
| GCV | kWh/m3 | 10.26 | 13.26 |
| Relative Density | m3/m3 | 0.555 | 0.700 |
| S Total | mg/m3 | – | 50 |
| H2S + COS (as S) | mg/m3 | – | 15 |
| RSH (as S) | mg/m3 | – | 17 |
| O2 | mol% | – | 0.01 |
| CO2 | mol% | – | 2.5 |
| H2O (dew point) | ºC at 70 bar (a) | – | +2 |
| HC (dew point) | ºC at 1-70 bar (a) | – | +5 |
| Dust/ particles | – | Technically pure | Technically pure |
In addition to the features shown above, the gas from unconventional sources, such as biogas, gas from biomass or other types of gas produced by microbial digestion processes must comply with the quality specifications in the following table.
| Property | Unit | Minimum | Maximum |
|---|---|---|---|
| Methane (CH4) | mol % | 90 | – |
| CO | mol % | – | 2 |
| H2 | mol % | – | 5 |
| Halogenated compounds: Fluoride/ Chlorine | mg/m3 | – | 10/1 |
| Ammonia | mg/m3 | – | 3 |
| Mercury | mg/m3 | – | 1 |
| Siloxanes | mg/m3 | – | 10 |
| Benzene, Toluene, Xylene (BTX) | mg/m3 | – | 500 |
| Micro-organisms | – | Technically pure | Technically pure |
| Dust/ particles | – | Technically pure | Technically pure |
In the case of biogas, biogas injection will be accepted in the network with a content of O2 of up to 0.3 mol % provided that the following conditions are met simultaneously at the injection site:
- The CO2 content must not exceed 2% mol at any time.
- The dew point of water should not exceed minus eight degrees Celsius (- 8 ° C) at any time.
- The injection volume of biogas in the trunk transport network must never exceed 5,000 m3/h (in reference conditions). For greater volumes and in any case for other entry points to the gas system, the maximum injection volume of biogas will be determined by the network owner in each specific case depending on the quality and volume of gas transported from the network to which it is connected, and shall be communicated to the Directorate General for Energy Policy and Mines, to the Technical System Manager and the National Commission of Markets and Competition.