The stack emission monitoring organisations are expected to verify that the continuous emission monitoring equipment installed at the release point meets the performance requirements for the process, both operational and legislative (Quality Assurance Level (QAL) 1). Additionally as part of the pre-visit assessment (contract review) any adjustments required to the plant/process will need to be agreed in advance, such that these can be performed within operational param- eters as part of the paired measurement exercise, in accordance to both QAL 2 and the Annual Surveillance Test (AST). The contract review process will also include an assessment of the on-going performance checks of current installed equipment, where applicable verifying that any zero and span drifts including maintenance outages are suitably controlled (in accordance to QAL3).
The actual paired measurements performed on site by all stack emis- sions monitoring organisations in the UK are performed in accordance to ISO/IEC 17025 and MCERTS accredited standard reference methods. The assessment also examined all the records from the monitoring exercises, the final report including the derivation and/or verification of the calibration function and additional information that is required in accordance to QAL2 and/or the AST. Accreditation demonstrates confidence that the organisation has the resources and technical competence to undertake the work, that correct and valid test methods are used, that the work is carried out impartially and with integrity and that suitable and appropriate sampling and analysis equipment has been used. It is also a requirement that all accredited organisations participate in relevant suitably recognised proficiency testing schemes.
Key documentation used in this process includes BS EN 14181,
the Environment Agency Method Implementation Document (MID) 14181 and Technical Guidance Note TGN M20, these are available from
www.mcerts.net This pilot programme has now been completed and all the partici- pant organisations were granted accreditation on 10 January 2011. The organisations in the UK that were granted accreditation are:
Company
Catalyst Environmental Limited CES Environmental Instruments Ltd
E ON New Build and Technology Limited
Accreditation 4279
2338N 2200N
Envirocare Technical Consultancy Ltd 2522N Environmental Compliance Ltd
Environmental Scientifics Group Limited
Littlebrook Power Services National Physical Laboratory
Northumbrian Water Ltd (trading as Northumbrian Water Scientific Services)
Parsons Brinckerhoff Ltd
Shield on-site service Limited RPS Consultants Ltd RWE Npower TUV NEL Ltd
2499N 1015N
2642N 0002N 1181N
2065N 1783N 1709N 1567N 0230N
Source Testing Association Annual Guide 2012 15
From 10 January 2011 it has been mandatory for all newly commissioned BS EN 14181 work (QAL2 and the AST – excluding the functional test) for processes operating with a permit from the Environment Agency under the Environmental Permitting Regulations to be performed by an organisation that holds the correct accreditation. The organisations’ individual schedules can be located on the UKAS.
com general website
http://www.ukas.com/default.asp by typing 14181 as the keyword search string and clicking on “testing labs” button below.
Any organisation that wishes to apply for UKAS accreditation in this area as an extension to their existing scope or as a new applicant should contact their appointed UKAS assessment manager or UKAS directly at
info@ukas.com or by asking for the corporate communications depart- ment on +44 (0)20 8917 8400
For details and advise on BS EN14181 or to see details of training courses telephone 01462 457535 or visit
www.s-.t-a.org
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