Pipe main
fitted with
84
(3) Any such valve shall be fitted with an indicator showing, in English and Chinese, whether the valve is open or closed.
243. Any valve fitted to any pipe main used for conveying highly valves to be inflammable or inflammable liquid in any petroleum installation shall be fitted with an indicator showing, in English and Chinese, whether the valve is open or closed.
indicator.
Repairs to Lants.
Entry into tank prohibited wirut
permission.
Fire and
naked lights not permitted except in approved places,
Electric equipment,
244. (1) Subject to paragraph (2) all leaks occurring in any tank in any petroleum installation shall be promptly repaired.
(2) No such tank shall be repaired in any manner involving the use of artificial heat, until a certificate by an approved person that the tank has been thoroughly ventilated and rendered free from inflammable vapour has been issued.
(3) Uotil such certificate has been issued, no lights or lamps except portable safety-lamps of a type approved by the Authority shall be taken into any such tank.
(4) Any repairs to any such tank used for the storage of bighly inflammable or inflammable liquid involving the renewal of plates, rivels or welding shall be inspected on completion by an approved surveyor.
(5) A record of all repairs carried out to any such tank used for the storage of highly inflammable or inflammable liquid shall be kept.
245. No person shall enter any tank in any petroleum installation without the permission of the licensee or other person in charge of the installation.
246. No fire or naked light of any description shall be in any pet- roleum installation except in such parts thereof as are specially allocated and approved by the Authority for use as offices, living quarters, solder- ing sheds, laboratories, engine-rooms, boiler-houses, workshops or smithies.
247. (1) In any petroleum installation no electric lights, motors. wiring, switches or fuze-boxes shall be in or on any building in which highly inflammable liquid is handled or stored without the permission of the Authority.
(2) Within a distance of fifty feet from any such building or any place where highly inflammable liquid is handled or stored in any petroleum installation-
(a) all electric lights, switches, fuzes and connexions shall be so enclosed as to prevent the entry of any inflammable vapout: (b) all electric motors shall be of squirrel-cage type and of flame-
proof construction; and
BS
(c) each electric circuit shall be fitted with an isolating switch, situated outside such distance, which can be locked in the open position while equipment in the circuit is under repair.
248. In any petroleum installation—
(a) any building shall be constructed of masonry, iron or other fire-resisting material approved by the Authority and by the Director of Public Works;
(b) the floor of any building used for the storage of highly in- flammable or inflammable liquid or paraffin wax in sacks shall be constructed of, or surfaced with, concrete or other material impervious to liquid;
(c) any building used for the storage of bighly inflammable or inflammable liquid or paraffin wax in sacks shall be so con- structed that the floor is sunk below ground level or fitted with sills, or both, or be surrounded by a masonry wall or embankment to provide adequate retaining space and approved by the Authority; and
(d) any building used for the storage of highly inflammable or inflammable liquid or paraffin wax in sacks shall be adequately ventilated at both high and low levels.
Construction of buildings.
249. (1) Any receptacle used to contain any highly inflammable Construction er intammable liquid at any petroleum installation otherwise than in of receptacles.
a tank stall-
(0) be impermeable to inflammable vapour;
(b) be made of galvanized iron, steel, lead plate or tin plate;
(c) be fitted with well made filling holes and well fitting screw-
plugs or with screw or other air-tight metal caps; and
(d) be filled only to such extent as will leave sufficient air-space
to allow of expansion of the contents.
(2) Any soldering-iron which is used in any petroleum installation for applying solder to any such receptacle and which is not heated by dextricity shall be heated in a place separate from that in which it is intended to be used.
150. No receptacle used to contain highly inflammable liquid in Repairs to any petroleum installation shall be repaired unless it has been emptied resepicles.
of all its contents and rendered free from inflammable vapour:
Provided that a leak in any such receptacle disclosed during the filling thereof may be repaired during such filling in an approved