Hong Kong Regulations

GAS SAFETY (INSTALLATION AND USE) REGULATIONS - REGULATION 12

Pressure-regulators

(1) No person shall install a primary meter or a meter bypass used in
connection with a primary meter unless-

   (a)  there is a pressure-regulator regulating the pressure of gas supplied
        through such meter or bypass, as the case may be, which provides
        automatic means for preventing the gas fittings connected to the
        downstream side of the pressure- regulator from being subjected to a
        pressure more than that for which they were designed;

   (b)  where the normal pressure of the supply of gas to the
        pressure-regulator referred to in paragraph (a) is more than
        low pressure and the gas is being supplied to a low pressure gas
        supply system, there are automatic means for preventing, in case such
        pressure-regulator should fail, the gas fittings referred to in that
        paragraph from being subjected to a pressure more than low pressure;
        and

   (c)  where the pressure-regulator referred to in paragraph (a) contains a
        relief valve or liquid seal, such valve or seal is connected to a vent
        pipe capable of venting safely.

(2) Where a person installs a pressure-regulator for regulating the pressure
of gas supplied through a primary meter or a meter bypass used in connection
with a primary meter, he shall immediately thereafter adequately seal the
pressure-regulator to prevent its setting from being interfered with without
breaking of the seal.

(3) No person except the gas supply company concerned or its agent shall break
a seal applied under subregulation (2). (Enacted 1990)