Methodology

Continuous improvement of the inventory is delivered through a programme of review of inventory data followed by a programme of targeted research. This is possible through maintaining an on-going "live" list of comments, improvements and problems that the inventory team find at any time of the inventory cycle.

In addition, there is a broader programme of activities, which contribute to the identification of improvement options:

  • attendance at technical national and international workshops, conferences and meetings such as the TFEIP/EIONET
  • ongoing data collection and inventory compilation
  • ongoing stakeholder consultation
  • assessment of results from the annual uncertainty assessments
  • recommendations from external and internal review
  • inconsistencies identified in verification work

The NAEI team also include specific improvement feedback from the wider user community including users of data for modelling and Local Authority review and assessment work.

A briefing note identifying inventory improvement research projects is compiled and prioritised in consultation with the Department. The work outlined in the briefing note is not restricted to that which could feasibly be undertaken as part of the core inventory improvement work. It includes complex, technical research programmes involving in-depth investigation of individual sources (for example through in-situ measurements) that would need different project teams and alternative funding.

The NAEI team have a programme of research that includes the following:

  • a programme of stakeholder consultation with trade associations, process operators and regulators to resolve specific issues such as verification/updating of individual assumptions used in methodologies, gap filling etc
  • improvement of the methodology for PM10 emissions from processes regulated under LAPC, currently based on use of emission factors developed in the mid 1990s and expressed in terms of emission per process
  • periodic review of emission factors for small combustion plant, particularly for pollutants such as NOx, CO, PM10 & POPs
  • improvement of the methodology for estimation of NMVOC emissions from adhesives use and cleaning solvents, paying particular attention to improving the estimation of solvent abatement and providing more detailed sectoral breakdowns

EMEP/EEA and the IPCC describe a minimum acceptable level of QA/QC and the UK emissions inventory team aim to exceed these baseline requirements. In addition to the UK’s own GHGI specific QA/QC system, through Ricardo Energy & Environment, the Inventory has been subject to ISO 9000 since 1994 and is now subject to BS EN ISO 9001:2008. It is audited by Lloyds Register Quality Assurance (LRQA) and the Ricardo Energy & Environment internal QA auditors. The NAEI has been audited favourably by LRQA on four occasions in the last 12 years. The emphasis of these audits was on authorisation of personnel to work on inventories, document control, data tracking and spreadsheet checking, and project management. As part of the Inventory management structure there is a nominated officer responsible for the QA/QC system – the QA/QC Co-ordinator. As part of the Ricardo group certification, Ricardo Energy & Environment is currently accredited to BS EN ISO 9001:2008.  Lloyds Register Quality Assurance carried out a three yearly recertification audit of Ricardo Energy & Environment which was completed in September 2017. Ricardo Energy & Environment successfully passed the recertification, with no major non compliances, and a new Ricardo group certificate was issued in December 2017. Under the Ricardo group certification Ricardo Energy & Environment is currently certificated both for the Quality Assurance ISO 9001:2008 and Environmental Management System ISO 14001:2004 standard.

Page last modified: 10 May 2018