Table 3:
52 -
Cases of incident with gas being identified to be town gas/synthetic natural gas.
Hong Kong
Kowloon
New Territories
Table 4:
Residential areas
School
56
2
145
1
138
4
339
7
Cases with gas identified to be liquefied petroleum gas
Hong Kong
Kowloon
New Territories
Residential areas
20
31
56
107
School
0
0
2
2
The sources of leakage of cases listed in tables 3 and 4 included underground gas mains, above-ground gas risers and domestic gas appliances.
Table 5: Cases with other gases identified
Hong Kong
Kowloon
New Territories
Residential areas
School
N V
5
1
2
0
2
1
9
2
The details of these incidents are given at Annex A.
Table 6: Cases where the source or type of gas was unidentified
Hong Kong
Kowloon
New Territories
Residential areas
2
5
10
17
School
0
1
1
2
Except for cases classified under Tables 2, the gases detected in these incidents could be regarded as harmful when they reach a significant concentration within a confined area.