THE SOURCE TESTING ASSOCIATION ANNUAL GUIDE 2011
to affect the homogeneity of the gas concentration. In practice, meeting the requirements for particulates will satisfy the requirements for gases.
Sampling facilities for CEMs
When designing a plant that requires CEMs to be installed, access and facilities are required to enable calibration by periodic monitor- ing, routine maintenance and functional checks. As CEMs require calibration by periodic monitoring, the access and facilities should, as a minimum, comply with the requirements given for particulates and gases respectively.
Measurement ports
Measurement ports should be considered at the design stage of new plants, as installing ports after a plant is built may be difficult and costly (or impossible if protective linings are present). In summary the access ports: must be big enough for the insertion and removal of the equipment used. It is recommended that access ports have a minimum diameter of 125mm, except on stacks smaller than 0.7m diameter. For small stacks a smaller port may be appropriate.
must be installed at a suitable height to the platform, so that the equipment can be manoeuvred. A working height of approximately 1.2m to 1.5m is recommended.
Sampling platforms The sample location must be situated where it is possible to erect suit-
A sampling platform should be wide enough to prevent sampling equipment extending beyond the platform when in use
able working platforms. Ideally, the measurement site should be easily and safely accessible via stairs.
Particulate and velocity based measurements require a sufficiently
large working area around the stack along the measurement lines, so that the measurement points can be sampled with the appropriate length probes. In summary: the platform surface area should not be less than 5m2 the minimum length in front of the access port shall be 2m or the length of the probe (which includes nozzles, suction/support tubes
and associated filter holders) plus 1m (whichever is the greater)
the platform should be wide enough to prevent sampling equipment extending beyond the platform
where necessary hoists or lifts should be provided to transport sampling equipment.
the use of the sampling equipment should not be impeded by guard fences or other structures.
Summary
By ensuring that monitoring arrangements are considered at the design stage of a new plant it should be possible to ensure that stack emission monitoring measurements are both reliable and compliant with legislation.
Key references 1 EN 15259:2007 – Air Quality – Measurement of stationary source emissions – Requirements for measurement sector and sites and for the measurement objective, plan and report.
2 Agency Technical Guidance Note M1 Sampling requirements for stack-emission monitoring.
Contact details For any further information or advise contact the Sources Testing Association via
www.s-t-a.org or telephone +44 (0) 1462 457535
Water Monitoring Association
The Water Monitoring Association (WMA), which represents the interests of companies involved in all aspects of water monitoring, was merged into the STA in 2010.
WMA was formed in mid-2007 to influence the development of standards, equipment, personnel and applications that affect qualitative and quantitative water monitoring. The Association’s objectives are to: provide an independent technical resource for members and their clients;
influence appropriate industry standards, codes, safety procedures and operating principles;
encourage the professional development and a high level of ethical conduct of industry personnel;
seek co-operative endeavours with other professional organisations, institutions and regulatory bodies, nationally and internationally.
Membership is open to any company or individual that has an interest in the monitoring of water and related field. Members of STA can become members of WMA, and vice versa, at no additional costs. One corporate membership will cover representation on any of the two association working groups.
6 Source Testing Association Annual Guide 2011
Companies that are WMA Members include: ABB Limited
AES Kilroot Power Ltd
ASEP School of Chemistry Ashtead Technology Ltd AstraZeneca
Axis Environmental Services Aylesford Newsprint Barking Power Limited Casella Measurement Castle Environmental
Cogent Environmental Ltd Corus UK
CTI Environmental E.ON Engineering EMACCS Ltd
Emerson Process Management Enviro Technology Services PLC Environment Agency
Environmental & Efficiency Consultants (Ireland) Ltd Environmental Evaluation
Environmental Monitoring Consultants Environmental Technology (Publications) Envitech Ltd
EPR Thetford Limited
ESTIA Consulting & Engineering S.A. H. J. Enthoven & Sons Hach Lange
HACH LANGE Ltd Huntsman Pigments Hydro-Logic Ltd HydroVision GmbH
Industrial Air Monitoring Consultants Ltd Lafarge Cement UK Lakeside EFW Ltd Lucite International
Midland Lead Manufacturers Ltd Mobil North Sea Limited
Northern Ireland Environment Agency Northumbrian Water Ltd Novartis Grimsby Ltd P S Analytical Ltd Palintest Ltd
Partech Instruments Perkin Elmer
Pollution & Process Monitoring Ltd Process Measurement & Analysis Ltd Quantitech Ltd
Rod Hughes & Associates Ltd RPS Laboratories Ltd RWE npower
Scottish and Southern Energy plc SGL Cabon Fibers Ltd Sheffield Assay Office Shell Global Solutions SI Group-UK, Ltd
Sira Environmental Limited ThermoFisher Scientific
Vector Environmental Services Viridor
Full details of WMA can be viewed at
www.w-m-a.org
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