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Enforcement Policy for the replacement of iron gas mains 2006 - 2013 - December 2005

Background

Legal requirements

Industry structure

30 year replacement programmes

Replacement performance since April 2002

30/30 iron mains to be decommissioned (km)

Jan 2002 - March 2003*

April 2003 - March 2004

April 2004 - March 2005

Baseline + 10% target

2575

2549

2882

Actual

2846

2673

2847

* The period January 2002 - March 2003 was a 15-month period following publication of HSE's enforcement policy and included 1411 km of medium pressure ductile iron mains [MPDI] which completed removal of 2800km of MPDI to comply with an earlier Improvement Notice.

HSE's iron mains replacement policy

Medium pressure ductile iron [MPDI] mains

Prioritising mains replacement

Monitoring performance

ANNEX 1 - Iron mains requiring decommissioning within 30m of buildings:

 

2002/03

2003/04

2004/05

2005/06

2007/07

TOTAL

Baseline

2043

2317

2620

2956

3193

13 128

Baseline +10%

2247

2549

2882

3252

3512

14 442

Table 1 - 30/30 Baseline profile - 91 000 km

ironga1

Table 2 - Plan (April 2005) based on replacing 91 000 km

ironga2

Table 3 - Potential profiles for replacing 101 800 km

ironga3

2011-06-06