Marking of refillable pressure receptacles
Marking shall be in accordance with sub-section 18.104.22.168 with the following variations.
The United Nations packaging symbol specified in 22.214.171.124.2 (a) and the provisions of 126.96.36.199.4 (q) and
(r) shall not be applied.
The requirements of 188.8.131.52.3 (j) shall be replaced by the following:
(j) The water capacity of the pressure receptacle in litres followed by the letter "L". In the case of
pressure receptacles for liquefied gases the water capacity in litres shall be expressed to three
significant figures rounded down to the last digit. If the value of the minimum or nominal water
capacity is an integer, the figures after the decimal point may be neglected.
The marks specified in 184.108.40.206.3 (g) and (h) and 220.127.116.11.4 (m) are not required for pressure receptacles
for UN No. 1965 hydrocarbon gas mixture, liquefied, n.o.s.
When marking the date required by 18.104.22.168.7 (c), the month need not be indicated for gases for which
the interval between periodic inspections is 10 years or more (see packing instructions P200 and P203
The marks in accordance with 22.214.171.124.7 may be engraved on a ring of an appropriate material affixed
to the cylinder when the valve is installed and which is removable only by disconnecting the valve
from the cylinder.
Marking of bundles of cylinders
Individual cylinders in a bundle of cylinders shall be marked in accordance with 126.96.36.199.1 to 188.8.131.52.6.
Marking of bundles of cylinders shall be in accordance with 184.108.40.206.2 and 220.127.116.11.3, except that the
United Nations packaging symbol specified in 18.104.22.168.2 (a) shall not be applied.
In addition to the preceding marks, each bundle of cylinders that meets the periodic inspection and test
requirements of 22.214.171.124 shall be marked indicating:
(a) The character(s) identifying the country authorizing the body performing the periodic inspection
and test, as indicated by the distinguishing sign used on vehicles in international road traffic2.
This mark is not required if this body is approved by the competent authority of the country
(b) The registered mark of the body authorised by the competent authority for performing periodic
inspection and test;
(c) The date of the periodic inspection and test, the year (two digits) followed by the month (two
digits) separated by a slash (i.e. "/"). Four digits may be used to indicate the year.
The above marks shall appear consecutively in the sequence given either on the plate specified in
126.96.36.199.2 or on a separate plate permanently attached to the frame of the bundle of cylinders.
Marking of non-refillable pressure receptacles
Marking shall be in accordance with 188.8.131.52, except that the United Nations packaging symbol
specified in 184.108.40.206.2 (a) shall not be applied.
Salvage pressure receptacles
To permit the safe handling and disposal of the pressure receptacles carried within the salvage
pressure receptacle, the design may include equipment not otherwise used for cylinders or pressure
drums such as flat heads, quick opening devices and openings in the cylindrical part.