New CEMS Calibration Requirements

The EA are keen to improve the accuracy of CO2 data and other pollutants reported under the Pollution Inventory and therefore are asking all EfW plant operators to calibrate their CO2 and N2O CEMS and flow meters by 2023.

What’s the EA Asking For?

For CO2 and N2O this will involve meeting the requirements of EN 14181, which includes carrying out a QAL 2 exercise, implementing QAL 3 measures and carrying out Annual Surveillance Tests (ASTs) thereafter.

For flow meters this will involve the calibration and validation of flow meters by parallel measurements with the reference manual method described in EN ISO 16911-1.

*Note that existing CEMS and flow meters do not have to be MCERTS-certified, although MCERTS-certified CEMS and flow meters will be required to be installed when the existing system is replaced.


How to Upgrade to CO2 and N2O Measurement

If your analyser isn’t capable of monitoring CO2, we have a couple of options:

Upgrade Your Gas Library – Adding CO2 and N2O to your gas library and EN14181 reporting schedule is straightforward to perform if you have an FTIR installed.

Replace Your CEM analyser – Ask about our new MIR9000 promotion.

The EA expect this to be carried out by 01/01/23

MCERTS Certified Flow Meter Upgrade

If your non-MCERTS certified stack flow meters fail QAL2, they’ll need to be upgraded to an MCERTS certified flow meter.

The Stackflow 200 and Stackflow 400 flow meters are both MCERTS certified and are available from a1-cbiss.

New for 2023: Mercury Monitoring

As per BAT 4 in the 2019 Waste Incineration (WI BREF) BAT Conclusions, operators of waste incineration sites must perform a protocol which concludes whether Mercury CEMS will be required.

The protocol of six consecutive accelerated or periodic tests has been agreed by the UK Regulators for operators to demonstrate their mercury results.

For operators of hazardous waste incineration plants that fail to consistently record results below the 10 µg/Nm3 threshold, mercury monitoring will be required.

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