Element offers a complete range of stack emissions testing, environmental inspection, and consultancy services to help organizations achieve total regulatory compliance for industrial installations.
Operators producing emissions to air from stacks and other source releases are required to comply with Emissions Limit Values (ELVs) and Quality Assurance of CEMS as specified in their regulatory monitoring requirements, such as EU Industrial Emissions (IED) & Medium Combustion Plant (MCP) Directives, US Clean Air Act, Permit & License monitoring requirements.
MCERTS stack emissions testing and monitoring
Element are the largest ISO 17025 UKAS-MCERTS accredited organization in the UK & Ireland, operating from 10 regional offices with 42 teams.
Key Features of our class-leading emissions service include:
- People - Largest pool of MCERTS certified emissions experts in the UK (Level II with all 4 Technical Endorsements).
- Geographic Coverage - Engineers based across 10 regional offices to quicken operations, maintain competitive rates and provide value for money.
- Accreditation - Largest scope of UKAS Accredited Tests in the UK covering all the main parameters but also other, less common, compounds including Chrome VI, Isocyanates, Siloxanes, Bioaerosols, Speciated VOCs such as Phenols and Cresols, Sulphuric Acid Mist, Odour, HCN, H2S along with other trace and bulk gas components.
- Centre of Technical Excellence – Each year we conduct over 300 EN 14181 CEMS QAL2 and AST campaigns and all this knowledge, practical experience and best practice is focused in our new hub with the aim of delivering the best possible advice and trusted solutions for CEMS Quality Assurance and Verifications.
- Calibration Workshop – We maintain, calibrate and performance check all of our sampling equipment ourselves. For example, over 60 FIDs, over 60 Horiba Combustion Gas Analysers, and around 70 Manual Isokinetic Sampling Systems. This gives us a greater understanding of how the equipment works leading to more accurate and repeatable emissions data.
- In-House Analysis of Samples by Element laboratories – Some stack emissions testing requires extractive.
- e-Mission Digitial Portal to manage all aspects of your emissions requirements through an on-line system designed by Element.
We provide independent, accredited stack emissions testing, which is essential for all organizations that wish to meet their regulatory compliance responsibilities.
Maritime Emissions Monitoring
International Maritime Organization (IMO) regulations have been tightened in recent years to limit air emissions from ships and other maritime vessels. Maritime air pollution control is now much more closely aligned with shore-based power plants and industrial sites.
Our ISO 17025 UKAS-MCERTS accredited emissions testing methods monitor maritime emissions highlighted in the MARPOL Annex VI Regulations, aimed at controlling pollutants such as NOx, SOx and CO2.
Element work in collaboration with marine fuel additive companies to provide the sector with independently verified reductions in carbon emissions and fuel consumption. We have a proven track record of successfully delivering maritime projects, and our experience of testing on ships and vessels allows us to provide the accurate advice you need.
Continuous Emissions Monitoring Systems (CEMS) - EN 14181 Quality Assurance & Verification
EN 14181 is a European Standard covering Quality Assurance of Continuous Emissions Monitoring Systems (CEMS) and focuses on calibration, testing and verification. The standard has 4 main sections:
Quality Assurance Level 1
Demonstrating the CEM is suitable and fit for purpose.
Quality Assurance Level 2
Ensuring the CEM is set up correctly and calibrated.
Quality Assurance Level 3
Ongoing Quality Assurance of Performance of CEM
Annual Surveillance Test
Annual between QAL2s
Annual assessment check of Calibration Functions
*CEMS are also sometimes referred to as AMS (Automated Measuring Systems).
The QAL2 has 3 steps: 1) Functional Tests & Linearity Checks, 2) Parallel measurements using Standard Reference Methods (SRM) and CEMS data and 3) Data handling.
There should be a minimum of 15 parallel measurements spread over 3 days to maximise a good spread of data and at least one results near zero.
Data handling is also vitally important. As the Time Series plot graph below shows, the parallel data (SRM & CEM) are converted to the same conditions and a Calibration Function is derived via linear regression.
There are 3 methods used to derive a valid Calibration Function:
- Method A – Used when you have a good spread of data (Linear Regression).
- Method B - Used when you have a high level cluster (Linear Regression through zero).
- Method C – Used when you have a low level cluster (Surrogates used).
A Variability Test is carried out looking at the difference between the Calibrated CEM and SRM and a Pass or Fail is reported.
QAL3 focusses on ongoing Quality Control and determination of SAMS (Standard Deviation of the AMS) by regular zero and span checks. It is important to clarify that the analyser isn’t adjusted, just checked. Results are plotted on Control Charts either as CUSUM (Cumulative Sums) or Schewart (good at detecting changes in a measurement mean or variance) and show the drift of a CEM over time. Warning Limits and Action Limits are set and prescriptive procedures for dealing with out of control situations.
Annual Surveillance Test (ASTs) are a yearly check and like a ‘mini QAL2’. Functional and Linearity Checks are performed along with a reduced set of Parallel Measurements. At least SRM measurements are taken over 1 day and results are checked for Variability and against the current Calibration Function.
Many facilities are required to operate under an Odour Management Plan (OMP) as part of their Environmental Permitting Regulations and to prove Compliance. Other processes may just require an assessment of the performance of odour control units or to investigate an odour complaint.
Odour pollution can be complicated to assess and measure as often several substances are involved and multiple factors in play including the concentration, intensity and site specific / time dependent factors.
For Point Sources (Stacks) Odour is measured to the European Odour Standard EN 13725:2003 for which Element are UKAS Accredited. This determines the odour concentration by dynamic olfactometry, where odour is assessed from the point of view of perceptibility to human olfactory sense.
We can collect samples using a non-reactive material and a sampling technique that prevents potential sources of contamination. The sample is rapidly assessed by an odour panel within 30 hours of sampling. Results are then calculated in the form of European odour units, and assessment of the hedonic tone, if necessary.
In addition to stack emissions testing and compliance services, Element also offers audit training e.g. Operator Monitoring Assessment (OMA) to prepare for an Environment Agency audit visit. Audit training can help ensure your audit will be carried out effectively and efficiently, resulting in an accurate representation of the standard of self-monitoring.
The Element advantage
We conduct more EN 14181 QAL2 and ASTs than anyone else in the UK. Our newly formed Centre of Technical Excellence acts as a hub to share best practice and knowledge from our vast experience conducting tests with the full spectrum of different types of CEM.
With this complex, technical emissions testing trust our Element experts and the number one provider of this service.
We have specialized in-house training programmes targeted at excellence in the details, intricacies and methods A, B & C for deriving calibration functions for EN 14181.
Our goal is to help you achieve regulatory compliance, meet your environmental goals, and support reduced emissions to improve Air Quality.
For more information about our stack emissions testing, or to know more about our MCERTS accredited stack emissions testing services, contact us today.
Our stack emissions testing and compliance services include:
- Periodic Compliance Monitoring
- CEMS Calibration & Verification
- EN 14181 QAL 2 & Annual Surveillance Test
- US EPA RATA Protocols
- Accredited Stack Emissions Testing (ISO 17025, MCERTS)
- In-House Accredited Laboratory Analysis (ISO 17025, MCERTS) of Stack Emissions Monitoring Samples
- Training (Regulatory Compliance, EN 14181)
- Investigative Testing, Process Optimization & Abatement Plant Efficiency Testing
- Process Commissioning of New Plant
- Offshore Emissions Monitoring
- Air Quality Assessment (Air, Noise & Odour)
- Dispersion Modelling (Air, Noise & Odour)
- Environmental Noise Assessments (Noise Investigation, Acoustic Camera)
- Planning & Permitting Support Services
- Dioxins and Furans Testing
We provide all types of stack emissions testing using manual reference and alternative methods, instrumental analyzers, and FTIR including;
- Particulate Matter, PM10 & PM2.5
- Combustion Gases (NOX, NO, NO2, N2O, SO2, CO, CO2, VOCs & TOC)
- Trace Pollutants (Dioxins & Furans, PCBs & PAHs, Metals & Mercury, Hexavalent Chromium)
- Acidic Gases & Vapors (HCl, HF, NH3, HCN, H2S, Sulphuric Acid Mist, Nitric Acid Vapor)
- Organic Compounds (Specific VOCs, Formaldehyde & Aldehydes, Isocyanates, Oil Mist, Tar & Bitumen Fume)
- Biogenic Fraction CO2
Element performs stack emissions testing to the following standards:
|Pollutant||European Standards||US EPA (CFR) Standards|
|Aldehydes||US EPA Method 316||US EPA Method 316|
|Biogenic Fraction CO2||EN ISO 13833|
|Carbon Dioxide||ISO 12039|
|Carbon Monoxide||EN 15058|
|Condensable VOCs||In house accredited method|
|Dioxins and Furans||EN 1948 |
|Dioxin-like PCBs ||EN 1948:4|
|Formaldehyde ||US EPA Method 316 |
|Gaseous Species by FTIR||TGN M22 (Flexible Scope)|
|Halides and Halogens ||US EPA Method 26/26A ||US EPA Method 26/26A|
|Heavy Metals||EN 14385|
|Hexavalent Chromium||EN ISO 23210|
|Homogeneity||EN 15259 |
|Hydrogen Chloride ||EN 1911 |
|Hydrogen Cyanide ||US EPA CTM 033 ||US EPA CTM 033|
|Hydrogen Fluoride||ISO 15713 |
|Hydrogen Sulphide ||US EPA Method 11 ||US EPA Method 11 |
|lsocyanates||US EPA CTM 36 |
|Mercury ||EN 13211 |
|Nitric Acid Vapour ||US EPA Method 7D |
|Nitrous Oxide ||EN ISO 21258 |
|Odor ||EN 13725 |
|Oil Mist, Tar and Bitumen Fume ||EN 13284-1 with MDHS 84 |
|Oxides of Nitrogen ||EN 14792 |
|Oxygen ||EN 14789 |
|PAHs ||ISO 11338 |
|PM10& PM2.5 ||EN ISO 23210 |
|Pressure, Temperature, and Velocity ||EN 16911-1|
|Speciated VOCs ||PD CEN/TS 13649 |
|Sulphur Dioxide ||EN 14791 |
|Sulphur Dioxide ||CEN/TS 17021 |
|Total Particulate Matter ||EN 13284-1 |
|Total VOCs (TOC) ||EN 12619 |
|Water Vapour||EN 14790|
Total environmental compliance
Test, track and trend your stack emissions data with our industry leading digital portal.
With e-Mission, Element continues to innovate in the field of emissions monitoring.
Read more about how our emissions platform offers a clearer picture of your environmental status, provides the ability to spot trends and identify issues to reduce the risk of non-compliance.READ MORE
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