### Gas Safety (Installation and Use) Regulations 《氣體安全(裝置及使用)規例》

8. Emergency controls
(1) No person shall provide a new supply of gas for use in any premises unless there is provided an emergency control to which there is access situated—
(a) if there are domestic premises to be supplied with gas in the premises—
(i) as near, so far as is reasonably practicable, to the point where the gas pipe through which gas is to be supplied enters the domestic premises; and
(ii) if the gas pipe through which gas is to be supplied enters the premises at a place not comprised within any domestic premises, as near, so far as is reasonably practicable, to the point of entry; or
(b) if there are no such domestic premises in the premises, as near, so far as is reasonably practicable, to the point where the gas pipe through which the gas is to be supplied enters the premises.
(2) A person installing an emergency control shall ensure that—
(a) any key, lever or hand wheel of such control is securely attached to the operating spindle of such control;
(b) any such key or lever is attached so that—
(i) the key or lever is parallel to the axis of the pipe in which such control is installed when such control is in the open position; and
(ii) where the key or lever is not attached so as to move only horizontally, gas cannot pass beyond such control when the key or lever has been moved, so far as is practicable, downwards; and
(c) the means of operating such control are clearly and permanently marked, or a notice in permanent form is prominently displayed, in the English and Chinese languages, near such means so as to indicate when such control is open and when such control is shut.
(3) Where a person installs an emergency control which is not to form part of a primary meter installation, he shall immediately thereafter prominently display on or near the means of operating such control a notice in permanent form bearing, in the English and Chinese languages, the words or characters “Gas Emergency Control 氣體緊急控制閥”—
(a) indicating that the consumer should—
(i) shut off the supply of gas immediately in the event of an escape of gas in the premises for which such control is provided;
(ii) where any gas continues to escape after such control has been closed, as soon as practicable give notice of the escape to—
(A) the Emergency Services, by dialling telephone number 999; and
(B) the gas supply company concerned or its agent; and
(iii) not re-open such control until all necessary steps have been taken to prevent gas from escaping again; and
(b) stating—
(i) the name of the gas supply company concerned or its agent; and
(ii) the emergency telephone number of the gas supply company or its agent.

### Gas Safety (Installation and Use) Regulations 《氣體安全(裝置及使用)規例》

9. Electrical continuity—general
Where it is necessary to avoid danger, no person shall carry out work in relation to a gas fitting without first providing electrical cross-bonding and maintaining the electrical cross-bonding until the work is completed.

10. Gas meters—general provisions
(1) No person shall install a gas meter in any common area of any premises which has more than one occupier where that area provides the only means of escape from the premises, or any part of the premises, in case of fire unless such meter replaces an existing gas meter and—
(a) such meter is—
(i) of fire-resisting construction; or
(ii) housed in a meter box with automatic self-closing doors and which is of fire-resisting construction; or
(b) the gas pipe immediately upstream of such meter or, where a pressure-regulator is adjacent to such meter, immediately upstream of that pressure-regulator, incorporates a device designed to cut off automatically the supply of gas if the temperature of the device is more than 95 degrees centigrade.
(2) For the purposes of subregulation (1)(a), the expression fire-resisting construction (結構耐火) means that, if the gas meter, or the meter box housing such meter, concerned were subjected to a fire test specified by the Authority—
(a) by notice in the Gazette; or
(b) in writing,
for the purposes of this subregulation, the construction of such meter would not be so adversely affected that gas could escape in hazardous quantities.
(3) No person shall install a gas meter unless it is so placed as to ensure, so far as is reasonably practicable, that there is no risk of damage to it from electrical apparatus.
(4) No person shall install a gas meter except in a readily accessible position for inspection and maintenance.
(5) Where a gas meter has bosses or side pipes attached to it by a soldered joint only, no person shall make rigid pipe connections to such meter.
(6) Where a person installs a gas meter and the gas fittings used in connection with such meter, he shall ensure that—
(a) immediately thereafter they are—
(i) tested to verify that they are gastight; and
(ii) examined to verify that they have been installed in accordance with these regulations; and
(b) immediately after such testing and examination, purging is carried out throughout such meter and gas fittings through which gas can flow so as to remove safely all air and gas other than the gas to be supplied.

### Gas Safety (Installation and Use) Regulations 《氣體安全(裝置及使用)規例》

11. Meter boxes
(1) No person shall house a gas meter in a meter box attached to or built into the external face of the outside wall of any premises unless such box is so constructed and installed that any gas escaping within it cannot enter the premises or any cavity in such wall but must disperse to the external air.
(2) No person shall knowingly store flammable materials in a meter box.
(3) No person shall install a gas meter in a meter box provided with a lock unless the consumer concerned has been provided with a key to the lock clearly labelled, in the English and Chinese languages, “Gas Meter Box 氣體錶箱”.

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).