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Sustainability Report 2011
Safety Performance The Safety of our Gas Infrastructure
Network Safety
Mainland China
As one of the leading provider of energy in mainland China, with a 138 businesses in our
portfolio spread out over 21 provinces, municipalities and autonomous regions, we take
a responsible stand, not only improving safety standards within our own operations but
also seeking to raise standards and drive a safety mindset both within the industry and
the community.
Many of these activities build on the systems and practices which have been tried
and tested in Hong Kong. Our SCADA system for instance, which provides the control
and monitoring backbone for our safety operations in Hong Kong, is also used by
38 of our city-gas businesses on the mainland. Similarly, we have been able to extend
our knowledge and experience in the use of polyethylene piping onto the mainland.
We were heavily involved in the establishment of quality PE piping standards in the
country, and our expertise is such that, sharing our experience, we also sit on four
International Organisation for Standardisation (ISO) Technical Sub-committees on PE
pipes and fittings.
Notes
1
The persistent cold spell in early 2011 caused a greater number of major seepages in the
mechanical joints of the older metal pipes in our network. As such, the number of Public Reported
Gas Seepage incidents for the year exceeded targets slightly. Addressing the situation, additional
measures including enhanced trench inspections, pre-excavation coordination with roadwork parties
and leakage surveys were implemented.
2
There was a drastic increase in roadwork activities during the year due to the many mega-projects
being carried out in Hong Kong. This additional activity raised the number of third party damage
incidents over the year’s target.
Area
Achievement Target
Gas Supply Reliability
99.999% >99.99%
Emergencies attended to within 30 minutes
96.7% >90%
Public Reported Gas Seepage incidents
per 10km of gas pipes
0.25
1
≤0.230
Third Party Damage incidents
15
2
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