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Progress with the iron mains replacement programme 2007 - 2008

  1. Under the Pipelines Safety Regulations 1996, regulation 13A [90KB], HSE approved annual replacement programmes for the year April 2007 to end March 2008 for the Distribution Networks (DNs) shown in Table 1. The progress in meeting the national and individual network targets is shown.
  2. Nationally 3639.2 km# of iron mains were decommissioned against an annual approved target of 3600.1 km - an extra 39.1 km#. All of the networks met or exceeded their overall decommissioning targets.
  3. As part of its monitoring strategy and 5 year intervention plans for the DNs, HSE continues to carry out mains replacement audits to check that mains are decommissioned in accordance with the policies and procedures in the DNs' Gas Safety (Management) Regulations 1996 safety cases.
  4. 4.  HSE has approved programmes for the Distribution Networks for the period April 2008 to end March 2009.

Table 1 - Mains replacement performance 2007 - 2008 by Distribution Networks

Network Network operator Target (km) Actual (km)
All networks   3600.1 3639.2#
Scotland Scotland Gas Networks plc 272.0 272.9
North of England Northern Gas Networks Limited 528.1 528.9
South of England Southern Gas Networks plc 604.0 613.8
Wales & West Wales & West Utilities Limited 361.0 364.6
North West National Grid Gas plc (NGG plc) 518 1835 527 1859#
East of England 588 622
West Midlands 367 369
North London 362 341

# In October 2008 National Grid identified that operational data for an activity in their UK Gas Distribution business was misreported as at 31 March 2008, and this is the subject of ongoing investigation. This investigation may have an impact on the figures given here.