Comparative Measurement NOx

Expert Assistance with Measurement and Reporting for Your NOx Declaration

On July 1, 2017, new regulations regarding measuring equipment for nitrogen oxide (NOx) fees entered into force (NFS 2016:13). The NOx fee is an economic instrument designed to reduce emissions and help achieve environmental quality goals regarding acidification, eutrophication, and clean air.

Does your facility fall under the NOx fee regulations?

According to the Swedish Environmental Protection Agency (Naturvårdsverket), the fee applies to companies operating boilers, gas turbines, or stationary internal combustion engines for electricity and/or heat production with an annual output of at least 25 GWh.

Certain exceptions exist under Act 1990:613, which include recovery boilers (soda and liquor boilers) within the pulp and paper industry.

How does a comparative measurement work?

To ensure that your facility’s permanent monitoring systems are functioning correctly, we perform comparative measurements. The process includes:

• Parallel Measurement: We compare values from the plant’s stationary measuring system with data recorded by our accredited air laboratory (Metlab).
• Data Pairs: The measurement consists of 10 data pairs. The duration of these pairs is adjusted based on the specific fuel being used.
• Flow Measurement: We supplement the process with traversing flow measurements to calculate the plant’s total NOx emissions with high precision.

Our measurements provide you with a reliable foundation for your declaration, ensuring full compliance with regulatory requirements.