Service equipment shall comply with 188.8.131.52.
Pressure drums may be provided with openings for filling and discharge and with other openings
intended for level gauges, pressure gauges or relief devices. The number of openings shall be kept to a
minimum consistent with safe operations. Pressure drums may also be provided with an inspection
opening, which shall be closed by an effective closure.
(a) If cylinders are fitted with a device to prevent rolling, this device shall not be integral with the
(b) Pressure drums which are capable of being rolled shall be equipped with rolling hoops or be
otherwise protected against damage due to rolling (e.g. by corrosion resistant metal sprayed on to
the pressure receptacle surface);
(c) Bundles of cylinders shall be fitted with appropriate devices ensuring that they can be handled
and carried safely;
(d) If level gauges, pressure gauges or relief devices are installed, they shall be protected in the same
way as is required for valves in 184.108.40.206.
Initial inspection and test
New pressure receptacles shall be subjected to testing and inspection during and after manufacture in
accordance with the requirements of 220.127.116.11.
Specific provisions applying to aluminium alloy pressure receptacles
(a) In addition to the initial inspection required by 18.104.22.168.1, it is necessary to test for possible
intercrystalline corrosion of the inside wall of the pressure receptacles where use is made of
an aluminium alloy containing copper, or where use is made of an aluminium alloy
containing magnesium and manganese and the magnesium content is greater than 3.5% or the
manganese content lower than 0.5%;
(b) In the case of an aluminium/copper alloy the test shall be carried out by the manufacturer at
the time of approval of a new alloy by the competent authority; it shall thereafter be repeated
in the course of production, for each pour of the alloy;
(c) In the case of an aluminium/magnesium alloy the test shall be carried out by the manufacturer
at the time of approval of a new alloy and of the manufacturing process by the competent
authority. The test shall be repeated whenever a change is made in the composition of the
alloy or in the manufacturing process.
Periodic inspection and test
Periodic inspection and test shall be in accordance with 22.214.171.124.
NOTE 1: With the agreement of the competent authority of the country that issued the type
approval, the hydraulic pressure test of each welded steel cylinder intended for the carriage of gases
of UN No. 1965, hydrocarbon gas mixture liquefied, n.o.s., with a capacity below 6.5 l may be
replaced by another test ensuring an equivalent level of safety.
NOTE2: For seamless steel cylinders and tubes the check of 126.96.36.199.1 (b) and the hydraulic
pressure test of 188.8.131.52.1 (d) may be replaced by a procedure conforming to EN ISO 16148:2016 "Gas
cylinders – Refillable seamless steel gas cylinders and tubes – Acoustic emission examination (AT)
and follow-up ultrasonic examination (UT) for periodic inspection and testing".
NOTE3: The check of 184.108.40.206.1 (b) and the hydraulic pressure test of 220.127.116.11.1 (d) may be replaced
by ultrasonic examination carried out in accordance with EN 1802:2002 for seamless aluminium
alloy gas cylinders and in accordance with EN 1968:2002 + A1:2005 for seamless steel gas cylinders.
Closed cryogenic receptacles shall be subject to periodic inspections and tests in accordance with the
periodicity defined in packing instruction P203 (8) (b) of 18.104.22.168, in accordance with the following:
(a) Check of the external condition of the receptacle and verification of the equipment and the
(b) The leakproofness test.
Approval of pressure receptacles
The procedures for conformity assessment and periodic inspection of section 1.8.7 shall be performed
by the relevant body according to the following table.
Type approval (22.214.171.124)
Supervision of manufacture (126.96.36.199)
Xa or IS
Initial inspection and tests (188.8.131.52)
Xa or IS
Periodic inspection (184.108.40.206)
Xa or Xb or IS
For refillable pressure receptacles, the conformity assessment of valves and other demountable
accessories having a direct safety function may be carried out separately from the receptacles and the
conformity assessment procedure shall be at least as stringent as that undergone by the pressure
receptacle to which they are fitted.
Xa means the competent authority, its delegate or inspection body conforming to 220.127.116.11, 18.104.22.168,
22.214.171.124 and 126.96.36.199 and accredited according to EN ISO/IEC 17020:2012 (except clause 8.1.3) type A.
Xb means inspection body conforming to 188.8.131.52, 184.108.40.206, 220.127.116.11 and 18.104.22.168 and accredited according
to EN ISO/IEC 17020:2012 (except clause 8.1.3) type B.
IS means an in-house inspection service of the applicant under the surveillance of an inspection body
conforming to 22.214.171.124, 126.96.36.199, 188.8.131.52 and 184.108.40.206 and accredited according to EN ISO/IEC
17020:2012 (except clause 8.1.3) type A. The in-house inspection service shall be independent from
design process, manufacturing operations, repair and maintenance.
If the country of approval is not a Contracting Party to ADR, the competent authority mentioned in
220.127.116.11.2 shall be the competent authority of a Contracting Party to ADR.
Requirements for manufacturers
The relevant requirements of 1.8.7 shall be met.