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Sustainability Report 2011
Safety Performance The Safety of our Gas Infrastructure
During the year, our wholly owned subsidiary, Quality Testing Services Limited also
gained accreditation under the Hong Kong Laboratory Accreditation Scheme (HOKLAS)
for its gas calibration services, enhancing our existing accreditation for the testing
of gas appliances and stainless steel gas tubing. Our “Pay-for-Safety, Quality and
Environmental Appraisal System” also encourages both contractors and their staff to
behave responsibly in our pipelaying contracts, with contractors receiving 1-2% of the
contract sum if they meet specified criteria. While such motivational schemes are not
new in Hong Kong, we believe that our system is unique in that 50% of the incentive
payments is paid to frontline workers.
Leakage and Pipeline Surveys
Number of Third Party Damage Incidents
08
10
07
12
06
13
05
17
04
28
03
41
10
10
09
14
2011
15
0
10
20
30
40
50
Type of Pipeline
Frequency of Leakage Surveys
All high pressure and intermediate
pressure mains
At least once a year
Medium pressure ductile iron pipes or all
galvanised iron pipes
At least six times a year
Low pressure ductile iron pipes
At least three times a year
Polyethylene or steel pipes over or
enclosed within structures
At least twice a year
Others
At least once a year