Marking of non-refillable UN pressure receptacles

Non-refillable UN pressure receptacles shall be marked clearly and legibly with certification and gas
or pressure receptacle specific marks. These marks shall be permanently affixed (e.g. stencilled,
stamped, engraved, or etched) on the pressure receptacle. Except when stencilled, the marks shall be
on the shoulder, top end or neck of the pressure receptacle or on a permanently affixed component of
the pressure receptacle (e.g. welded collar). Except for the UN packaging symbol and the "DO NOT
REFILL" mark, the minimum size of the marks shall be 5 mm for pressure receptacles with a diameter
greater than or equal to 140 mm and 2.5 mm for pressure receptacles with a diameter less than 140
mm. The minimum size of the UN packaging symbol shall be 10 mm for pressure receptacles with a
diameter greater than or equal to 140 mm and 5 mm for pressure receptacles with a diameter less than
140 mm. The minimum size of the "DO NOT REFILL" mark shall be 5 mm.

The marks listed in 6.2.2.7.2 to 6.2.2.7.4 shall be applied with the exception of (g), (h) and (m). The
serial number (o) may be replaced by the batch number. In addition, the words "DO NOT REFILL" in
letters of at least 5 mm in height are required.

The requirements of 6.2.2.7.5 shall apply.
NOTE: Non-refillable pressure receptacles may, on account of their size, substitute a label for
these permanent marks.

Other marks are allowed provided they are made in low stress areas other than the side wall and are
not of a size and depth that will create harmful stress concentrations. Such marks shall not conflict
with required marks.
 
2 Distinguishing sign of the State of registration used on motor vehicles and trailers in international road traffic,
e.g. in accordance with the Geneva Convention on Road Traffic of 1949 or the Vienna Convention on Road Traffic of
1968.

Marking of UN metal hydride storage systems

These marks shall be permanently affixed (e.g. stamped, engraved, or etched) on the metal hydride
storage system. The marks shall be on the shoulder, top end or neck of the metal hydride storage
system or on a permanently affixed component of the metal hydride storage system. Except for the
United Nations packaging symbol, the minimum size of the marks shall be 5 mm for metal hydride
storage systems with a smallest overall dimension greater than or equal to 140 mm and 2.5 mm for
metal hydride storage systems with a smallest overall dimension less than 140 mm. The minimum size
of the United Nations packaging symbol shall be 10 mm for metal hydride storage systems with a
smallest overall dimension greater than or equal to 140 mm and 5 mm for metal hydride storage
systems with a smallest overall dimension less than 140 mm.

 
The following marks shall be applied:
(a)       The United Nations packaging symbol                                               ;
 
 
This symbol shall not be used for any purpose other than certifying that a packaging, a flexible 
bulk container, a portable tank or a MEGC complies with the relevant  requirements  in  Chapter 
6.1, 6.2, 6.3, 6.5, 6.6, 6.7 or 6.11;
 
(b)      "ISO 16111" (the technical standard used for design, manufacture and testing);
 
(c)    The character(s) identifying the country of approval as indicated by the distinguishing sign 
   used on vehicles in international road traffic2;
NOTE: The country of approval shall be understood to be the country that approved the body which 
inspected the individual receptacle at the time of manufacture.
 
(d) The identity mark or stamp of the inspection body  that  is  registered  with  the  competent 
authority of the country authorizing the marking;
 
(e) The date of the initial inspection, the year (four digits) followed by the month (two digits) 
separated by a slash (i.e. "/");
 
(f)  The test pressure of the receptacle in bar, preceded by the letters "PH"  and followed  by the 
  letters "BAR";
 
(g) The rated charging pressure of the metal hydride storage system in bar, preceded by the letters 
"RCP" and followed by the letters "BAR";
 
(h) The manufacturer's mark registered by the competent authority. When the  country  of  
manufacture is not the same as the country of approval, then the manufacturer's mark shall be 
preceded by the character(s) identifying the country of manufacture as indicated by the 
distinguishing sign used on vehicles in international road traffic2. The country mark and the 
manufacturer’s mark shall be separated by a space or slash;
 
(i)       The serial number assigned by the manufacturer;
 
(j) In the case of steel receptacles and  composite  receptacles  with  steel  liner,  the  letter  
"H" showing compatibility of the steel (see ISO 11114-1:2012); and,
 
(k)   In the case of metal hydride storage systems having limited life, the date of expiry, denoted 
by  the letters "FINAL" followed by the year (four digits) followed by the month (two digits) 
separated by a slash (i.e. "/").
 
 
2                   Distinguishing sign of the State of registration used on motor vehicles and 
trailers in international road traffic,
e.g. in accordance with the Geneva Convention on Road Traffic of 1949 or the Vienna Convention on 
Road Traffic of 1968.
 
The certification marks specified in (a) to (e) above shall appear consecutively in the sequence given.
The test pressure (f) shall be immediately preceded by the rated charging pressure (g). The
manufacturing marks specified in (h) to (k) above shall appear consecutively in the sequence given
 

Other marks are allowed in areas other than the side wall, provided they are made in low stress areas
and are not of a size and depth that will create harmful stress concentrations. Such marks shall not
conflict with required marks.

 
tion  to  the  preceding  marks,  each  metal  hydride  storage  system  that  meets  the  periodic
inspection and test requirements of 6.2.2.4 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 approving manufacture;
 
(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.
 

Marking of UN bundles of cylinders

Individual cylinders in a bundle of cylinders shall be marked in accordance with 6.2.2.7.

Refillable UN bundles of cylinders shall be marked clearly and legibly with certification, operational,
and manufacturing marks. These marks shall be permanently affixed (e.g. stamped, engraved, or
etched) on a plate permanently attached to the frame of the bundle of cylinders. Except for the UN
packaging symbol, the minimum size of the marks shall be 5 mm. The minimum size of the UN
packaging symbol shall be 10 mm.

The following marks shall be applied:
(a) The certification marks specified in 6.2.2.7.2 (a), (b), (c), (d) and (e);
(b) The operational marks specified in 6.2.2.7.3 (f), (i), (j) and the total of the mass of the frame of
the bundle and all permanently attached parts (cylinders, manifold, fittings and valves). Bundles
intended for the carriage of UN 1001 acetylene, dissolved and UN 3374 acetylene, solvent free
shall bear the tare mass as specified in clause B.4.2 of ISO 10961:2010; and
(c) The manufacturing marks specified in 6.2.2.7.4 (n), (o) and, where applicable, (p).

The marks shall be placed in three groups:
(a) The manufacturing marks shall be the top grouping and shall appear consecutively in the
sequence given in 6.2.2.10.3 (c);
(b) The operational marks in 6.2.2.10.3 (b) shall be the middle grouping and the operational mark
specified in 6.2.2.7.3 (f) shall be immediately preceded by the operational mark specified in
6.2.2.7.3 (i) when the latter is required;
(c) Certification marks shall be the bottom grouping and shall appear in the sequence given in
6.2.2.10.3 (a).
 
2 Distinguishing sign of the State of registration used on motor vehicles and trailers in international road traffic,
e.g. in accordance with the Geneva Convention on Road Traffic of 1949 or the Vienna Convention on Road Traffic of
1968.
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