Chapter 6.2 – Provisions for the construction and testing of pressure receptacles, aerosol dispensers, small receptacles containing gas (gas cartridges) and fuel cell cartridges containing liquefied flammable gas
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Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.294(87) – Adoption of Amendments to the International Maritime Dangerous Goods (IMDG) Code – (Adopted on 21 May 2010) - Annex – Amendments to the International Maritime Dangerous Goods (IMDG) Code - Part 6 – Construction and Testing of Packagings, Intermediate Bulk Containers (IBCs), Large Packagings, Portable Tanks, Multiple-element Gas Containers (MEGCs) and Road Tank Vehicles - Chapter 6.2 – Provisions for the construction and testing of pressure receptacles, aerosol dispensers, small receptacles containing gas (gas cartridges) and fuel cell cartridges containing liquefied flammable gas

Chapter 6.2 – Provisions for the construction and testing of pressure receptacles, aerosol dispensers, small receptacles containing gas (gas cartridges) and fuel cell cartridges containing liquefied flammable gas

 After the heading of the chapter, add the following new note:

  • “Note: Aerosol dispensers, small receptacles containing gas (gas cartridges) and fuel cell cartridges containing liquefied flammable gas are not subject to the provisions of 6.2.1 to 6.2.3.".

6.2.1 General provisions

  6.2.1 The note after the heading is deleted.

  6.2.1.1.5 At the end of the existing paragraph, add a new sentence with the following:

  • "The test pressure of a metal hydride storage system shall be in accordance with packing instruction P205.".

  6.2.1.1.9 Delete the "s" on the word "receptacles".

6.2.1.2 Materials

  6.2.1.2.1 After the word "intended", insert the words "to be transported".

6.2.1.3 Service equipment

  6.2.1.3.4 After "P200 (1)" insert ", P205".

6.2.1.5 Initial inspection and test

  6.2.1.5.1 After "cryogenic receptacles" insert "and metal hydride storage systems".

  6.2.1.5.3 Add a new paragraph 6.2.1.5.3 to read as follows:

  • "6.2.1.5.3 For metal hydride storage systems, it shall be verified that the inspections and tests specified in 6.2.1.5.1 .1, .2, .3, .4, .5 if applicable, .6, .7, .8 and .9 have been performed on an adequate sample of the receptacles used in the metal hydride storage system. In addition, on an adequate sample of metal hydride storage systems, the inspections and tests specified in 6.2.1.5.1 .3 and .6 shall be performed, as well as 6.2.1.5.1 .5, if applicable, and inspection of the external conditions of the metal hydride storage system.

    Additionally, all metal hydride storage systems shall undergo the initial inspections and tests specified in 6.2.1.5.1 .8 and .9, as well as a leakproofness test and a test of the satisfactory operation of the service equipment.".

6.2.1.6 Periodic inspection and test

  6.2.1.6.1.4 After the existing paragraph insert the following three NOTES with the following:

  • "Note 1: With the agreement of the competent authority, the hydraulic pressure test may be replaced by a test using a gas, where such an operation does not entail any danger.

  • Note 2: With the agreement of the competent authority, the hydraulic pressure test of cylinders or tubes may be replaced by an equivalent method based on acoustic emission testing or a combination of acoustic emission testing and ultrasonic examination. ISO 16148:2006 may be used as a guide for acoustic emission testing procedures.

  • Note 3: The hydraulic pressure test may be replaced by ultrasonic examination carried out in accordance with ISO 10461:2005+A1:2006 for seamless aluminium alloy gas cylinders and in accordance with ISO 6406:2005 for seamless steel gas cylinders.".

  6.2.1.6.1 At the end, after the subparagraphs, replace the existing "Note 1 and Note 2" with the following:

  • “Note: For the periodic inspection and test frequencies, see packing instruction P200 of 4.1.4.1.".

6.2.2 Provisions for UN pressure receptacles

6.2.2.1 Design, construction and initial inspection and test

  6.2.2.1.1 In the table, add the following three new entries after ISO 7866:1999 standard:

ISO 4706:2008 Gas cylinders – Refillable welded steel cylinders – Test pressure 60 bar and below
   
ISO 18172-1:2007 Gas cylinders – Refillable welded stainless steel cylinders – Part 1: Test pressure 6 MPa and below
ISO 20703:2006 Gas cylinders – Refillable welded aluminium-alloy cylinders – Design, construction and testing

  6.2.2.1.5 Add a new paragraph 6.2.2.1.5 with the following:

  • “6.2.2.1.5 The following standards apply for the design, construction, and initial inspection and test of UN metal hydride storage systems, except that inspection requirements related to the conformity assessment system and approval shall be in accordance with 6.2.2.5:

    ISO 16111:2008 Transportable gas storage devices – Hydrogen absorbed in reversible metal hydride

6.2.2.2 Materials

  6.2.2.2 At the beginning, in the text between brackets and after "P200", insert "or P205".

6.2.2.3 Service equipment

  6.2.2.3 Replace "ISO 10297:1999" with "ISO 10297:2006"

and at the end of 6.2.2.3, add the following new paragraph:

  • "For UN metal hydride storage systems, the requirements specified in the following standard apply to closures and their protection:

    ISO 16111:2008 Transportable gas storage devices – Hydrogen absorbed in reversible metal hydride

6.2.2.4 Periodic inspection and test

  6.2.2.4 At the beginning after "UN cylinders" insert "and UN metal hydride storage systems" and in the table, add the following new entry at the end:

ISO 16111:2008 Transportable gas storage devices – Hydrogen absorbed in reversible metal hydride

6.2.2.7 Marking of refillable UN pressure receptacles

  6.2.2.7 After the heading, add the following new note:

  • "Note: Marking provisions for UN metal hydride storage systems are given in 6.2.2.9.".

  6.2.2.7.1 Assign paragraph number 6.2.2.7.1 to the first unnumbered paragraph under 6.2.2.7. Renumber subsequent paragraphs and cross-references accordingly.

  6.2.2.7.2 (a) (existing 6.2.2.7.1 (a)) Replace the second sentence with the following:

  • "This symbol shall not be used for any purpose other than certifying that a packaging, a portable tank or a MEGC complies with the relevant provisions in chapter 6.1, 6.2, 6.3, 6.5, 6.6 or 6.7;".

  6.2.2.7.9 Add a new paragraph 6.2.2.7.9 to read as follows:

  • "6.2.2.7.9 For bundles of cylinders, pressure receptacle marking provisions shall only apply to the individual cylinders of a bundle and not to any assembly structure.".

6.2.2.8 Marking of non-refillable UN pressure receptacles

  6.2.2.8 Assign paragraph number 6.2.2.8.1 to the first unnumbered paragraph under 6.2.2.8, and renumber the following paragraphs accordingly.

  6.2.2.9 Add a new subsection 6.2.2.9 with the following:

“6.2.2.9 Marking of UN metal hydride storage systems

  6.2.2.9.1 UN metal hydride storage systems shall be marked clearly and legibly with the marks listed below. 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.

  6.2.2.9.2 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 portable tank or a MEGC complies with the relevant requirements in chapter 6.1, 6.2, 6.3, 6.5, 6.6 or 6.7;
(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 signs of motor vehicles in international traffic;
(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 signs of motor vehicles in international traffic. 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 11114-1:1997); 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. "/").

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.

  6.2.2.9.3 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.

  6.2.2.9.4 In addition to the preceding marks, each metal hydride storage system that meets the periodic 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 of motor vehicles in international traffic. This marking is not required if this body is approved by the competent authority of the country approving manufacture;

  • (b) The registered mark of the body authorized 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.".

6.2.4 Provisions for aerosol dispensers, small receptacles containing gas (gas cartridges) and fuel cell cartridges containing liquefied flammable gas

  6.2.4.3 Replace with the following:

  • "6.2.4.3 With the approval of the competent authority, aerosols and receptacles, small, are not subject to 6.2.4.1 and 6.2.4.2, if they are required to be sterile but may be adversely affected by water bath testing, provided:

    • (a) They contain a non-flammable gas and either

      • (i) contain other substances that are constituent parts of pharmaceutical products for medical, veterinary or similar purposes;

      • (ii) contain other substances used in the production process for pharmaceutical products; or

      • (iii) are used in medical, veterinary or similar applications;

    • (b) An equivalent level of safety is achieved by the manufacturer's use of alternative methods for leak detection and pressure resistance, such as helium detection and water bathing a statistical sample of at least 1 in 2000 from each production batch; and

    • (c) For pharmaceutical products according to (a)(i) and (iii) above, they are manufactured under the authority of a national health administration. If required by the competent authority, the principles of Good Manufacturing Practice (GMP) established by the World Health Organization (WHO)footnote shall be followed.".


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