GAS SAFETY (GAS QUALITY) REGULATIONS
- CHAPTER 51A

GAS SAFETY (GAS QUALITY) REGULATIONS - LONG TITLE  
Empowering section VerDate:30/06/1997



(Cap 51, section 8)

[1 April 1991]

(L.N. 317 of 1990)



GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 1
Citation VerDate:30/06/1997



These regulations may be cited as the Gas Safety (Gas Quality) Regulations.
(Enacted 1990)



GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 2
Interpretation VerDate:30/06/1997



In these regulations, unless the context otherwise requires-
"relative density" (相對密度), in relation to any gas, means the ratio of the 
mass of a volume of the gas when containing no water vapour to the mass 

        (expressed in the same units) of the same volume of air containing no 
water vapour under the same conditions of temperature and pressure;
"sulphur" (硫磺) includes sulphur compound;
"Wobbe number" (華白指數) means the number derived by dividing the calorific 
value of any gas by the square root of the relative density of the gas.
(Enacted 1990)
"relative density" (相對密度)
"sulphur" (硫磺)
"Wobbe number" (華白指數)


GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 3
Standard of pressure VerDate:30/06/1997



No person shall supply any gas through-

        (a)	a service pipe; or

        (b)	a gas main,
at a pressure which is less than the pressure specified in column 2 of the 
table to this regulation in relation to the range of Wobbe numbers 
specified opposite thereto in column 1 of that table applicable to the gas 
supplied.

TABLE

PRESSURE OF GAS SUPPLIED THROUGH SERVICE PIPES AND GAS MAINS

Column 1	Column 2
Range of Wobbe numbers in Megajoule per cubic metre	Pressure measured in kPa in 
excess of atmospheric pressure 
Not more than 31
More than 31 but not more than 40
More than 40 but not more than 72
More than 72	0.5
	1
	1.25
	2
(Enacted 1990)



GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 4
Standard of purity VerDate:30/06/1997



No person shall supply any gas specified in column 1 of the table to this 
regulation which contains more than the proportion of sulphur specified 
opposite thereto in column 2 of that table.

TABLE

PURITY OF GAS SUPPLIED

Column 1	Column 2
Type of gas	Maximum proportion of sulphur
Town gas

Natural gas

Liquefied petroleum gas	5 mg of hydrogen sulphide per standard cubic metre
	5 mg of hydrogen sulphide per standard cubic metre
	0.02% by mass total sulphur
(Enacted 1990)



GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 5
Distinctive smell VerDate:30/06/1997




(1)	Subject to subregulation (2), no person shall supply any gas 
which does not possess a distinctive smell.

(2)	Subregulation (1) shall not apply to the supply of gas for use 
in-

        (a)	cigarette lighters; or

        (b)	aerosol cans.
(Enacted 1990)



GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 6
Offences VerDate:30/06/1997



Any person who contravenes regulation 3, 4 or 5(1) commits an offence and 
is liable on conviction to a fine of $10000 and, in the case of a 
continuing offence, to a daily penalty of $1000.
(Enacted 1990)



GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 7
Defence VerDate:30/06/1997



It shall be a defence to a charge under regulation 6 alleging the 
contravention of a provision referred to in that regulation that the 
person charged-

        (a)	shows that such contravention was due to circumstances beyond 
his control; and

        (b)	took all reasonably practicable steps to prevent such 
contravention.
(Enacted 1990)



GAS SAFETY (GAS QUALITY) REGULATIONS - REGULATION 8
Exemptions VerDate:30/06/1997



The Authority may exempt in writing any person from any of the provisions 
of regulation 3, 4 or 5(1)-

        (a)	where the Authority is of the opinion that the safety of 
members of the public will not be prejudiced by such exemption; and

        (b)	subject to such reasonable conditions as the Authority thinks 
fit specified in such exemption.
(Enacted 1990)