Data Storage level 1
6.Robustness DS.1.6.1 Explicit agreements between the external institution of data delivery and NERI about the condition of delivery
For stationary combustion a data delivery agreement is made with the DEA. Most of the other external data sources are available due to legis-latory requirements. See Table 45.
Data Storage level 1
7.Transparency DS.1.7.1 Summary of each dataset including the reasoning for selecting the specific dataset
See DS 1.3.1
Data Storage level 1
7.Transparency DS.1.7.3 References for citation for any external data set have to be available for any single num-ber in any dataset.
See Table 45 for general references. Much documentation already ex-ists. However, some of the information used is classified and therefore not publicly available.
Data Storage level 1
7.Transparency DS.1.7.4 Listing of external contacts for every dataset
See Table 45.
Data Processing level 1
1. Accuracy DP.1.1.4 Verification of calculation results using guideline values
Calculated emission factors are compared with guideline emission fac-tors to ensure that they are within reason.
Data Processing level 1
2.Comparability DP.1.2.1 The inventory calculation has to follow the international guidelines suggested by UNFCCC and IPCC.
The calculations follow the principle in international guidelines.
Data Processing level 1
3.Completeness DP.1.3.1 Assessment of the most important quantita-tive knowledge which is lacking.
Regarding the distribution of energy consumption for industrial sources, a more detailed and frequently updated data material would be preferred. There is ongoing work to increase the accuracy and com-pleteness of this IPCC source category. It is not assessed that this has any influence on the emission of greenhouse gases.
Data Processing level 1
3.Completeness DP.1.3.2 Assessment of the most important cases where accessibility to critical data sources that could improve quantitative knowledge is missing.
There is no missing accessibility to critical data sources.
Data Processing level 1
4.Consistency DP.1.4.1 In order to keep consistency at a higher level, an explicit description of the activities needs to accompany any change in the calculation procedure.
A change in calculation procedure would entail that an updated de-scription would be elaborated.
Data Processing level 1
5.Correctness DP.1.5.1 Show at least once, by independent calcula-tion, the correctness of every data manipula-tion.
During data processing it is checked that calculations are done cor-rectly. However, documentation for this needs to be elaborated.
Data Processing level 1
5.Correctness DP.1.5.2 Verification of calculation results using time-series
Time-series for activity data on SNAP level, as well as emission factors, are used to identify possible errors in the calculation procedure.
Data Processing level 1
5.Correctness DP.1.5.3 Verification of calculation results using other measures
The IPCC reference approach validates the fuel consumption rates and CO2 emissions of fuel combustion. Fuel consumption rates and CO2
emissions differ by less than 1.7 % (1990-2007). The reference approach is further discussed below.
Data Processing level 1
5.Correctness DP.1.5.4 Show one-to-one correctness between external data sources and the databases at Data Storage level 2.
There is a direct line between the external datasets, the calculation process and the input data used to Data Storage level 2. During the cal-culation process numerous controls are conducted to ensure correct-ness, e.g. sum checks of the various stages in the calculation procedure.
Data Processing level 1
7.Transparency DP.1.7.1 The calculation principle and equations used must be described.
Data Processing level 1
7.Transparency DP.1.7.2 The theoretical reasoning for all methods must be described.
Data Processing level 1
7.Transparency DP.1.7.3 Explicit listing of assumptions behind all methods
Where appropriate, this is included in the present report with annexes.
Data Processing level 1
7.Transparency DP.1.7.4 Clear reference to dataset at Data Storage level 1
There is a clear line between the external data and the data processing.
Data Processing level 1
7.Transparency DP.1.7.5 A manual log to collect information about recalculations
At present, a manual log table is not in place at this level. However, this feature will be implemented in the future. A manual log table is in-corporated in the national emission database, Data Storage level 2.
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Data Storage level 2
5.Correctness DS.2.5.1 Documentation of a correct connection be-tween all data types at level 2 to data at level 1
To ensure a correct connection between data on level 2 and data on level 1, different controls are in place, e.g. control of sums and random tests.
Data Storage level 2
5.Correctness DS.2.5.2 Check if a correct data import to level 2 has been made.
Data import is checked by use of sum control and random testing. The same procedure is applied every year in order to minimise the risk of data import errors.
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The emission from each large point source is compared with the emis-sion reported the previous year.
Some automated checks have been prepared for the emission data-bases:
• Check of units for fuel rate, emission factors and plant-specific emissions.
• Check of emission factors for large point sources. Emission factors for pollutants that are not plant-specific should be the same as those defined for area sources.
• Additional checks on database consistency.
• Most emission factor references are now incorporated in the emis-sion database, itself.
• Annual environmental reports are kept for subsequent control of plant-specific emission data.
• QC checks of the country-specific emission factors have not been performed, but most factors are based on input from companies that have implemented some QA/QC work. The major power plant owner/operators in Denmark, DONG Energy has obtained the ISO 14001 certification for an environmental management sys-tem. The Danish Gas Technology Centre and Force Technology both run accredited laboratories for emission measurements.
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The following points make up the list of QA/QC tasks to be carried out directly in relation to the stationary combustion part of the Danish emission inventories. The time plan for the individual tasks has not yet been made.
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A fully comprehensive list of references for emission factors and activ-ity data.
A comparison with external data from other countries in order to evaluate discrepancies.
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Documentation list of model and independent calculations to test every single mathematical relation.