Hong Kong Regulations

DANGEROUS GOODS (GENERAL) REGULATIONS - REGULATION 69

Flling of cylinders containing permanent gases

Except with the permission in writing of the Authority, given either generally
or in any particular case, no person shall fill any cylinder, or cause or
permit any cylinder to be filled, with any permanent gas to such an extent
that the internal pressure on the cylinder at 15.5 degrees Celsius exceeds-

   (a)  in the case of boron trifluoride, 10 MPa;

   (b)  in the case of krypton, 12 MPa;

   (c)  in the case of fluorine, such pressure as the Authority may permit;

   (d)  in the case of any other permanent gas, 14 MPa; and

   (e)  in the case of any gas contained in a special light metal cylinder not
        exceeding a capacity of 600 L of free gas, such pressure as the
        Authority may prescribe as a condition of the licence required for the
        filling thereof. (L.N. 119 of 1983)