Document ID: chunk:federal_register_of_legislation:F2023L01530:body:0:p19
Version: federal_register_of_legislation:F2023L01530
Segment Type: other
Provision Reference: 
Character Range: 54642–57720

this requirement.
         8.1.2. Extension
         The modification shall be designated an "extension" if, in addition to the change of the particulars recorded in the information folder,
              (a) Further inspections or tests are required; or
              (b) Any information on the communication document (with the exception of its attachments) has changed; or
              (c) Approval to a later series of amendments is requested after its entry into force.
         8.2. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 4.3. above to the Contracting Parties to the Agreement which apply this Regulation. In addition, the index to the information documents and to the test reports, attached to the communication document of Annex 1, shall be amended accordingly to show the date of the most recent revision or extension.
         8.3. The Type Approval Authority issuing the extension of approval shall assign a serial number to each communication form drawn up for such an extension.
9.             Conformity of production
Procedures concerning conformity of production shall conform to the general provisions defined in Appendix 2 to the Agreement (E/ECE/324‑E/ECE/TRANS/505/Rev.2) and at least meet the following requirements:

         9.1. A vehicle, hydrogen storage system or component approved pursuant to this Regulation shall be so manufactured as to conform to the type approved by meeting the respective requirements of paragraphs 5. to 7. above;
         9.2. The Type Approval Authority which has granted approval may at any time verify the conformity of control methods applicable to each production unit. The normal frequency of such inspections shall be once every two years.
         9.3. In case of compressed hydrogen storage system, the production control of the container shall satisfy the following additional requirements;
         9.3.1. Every container shall be tested in accordance with paragraph 5.2.1. of this Regulation. The test pressure is  150 per cent of NWP.
         9.3.2. Batch testing
         In any case, for each batch, which is not permitted to exceed 200 finished cylinders or liners (not including destructive test cylinders or liners), or one shift of successive production, whichever is greater, at least one container shall be subjected to the rupture test in paragraph 9.3.2.1. and furthermore at least one container shall be subjected to the pressure cycle test in               paragraph 9.3.2.2.
         9.3.2.1. Rupture test in batch testing
         The test shall be performed according to paragraph 2.1. (hydrostatic pressure rupture test) of Annex 3. The required rupture pressure shall be at least BPmin and the average burst pressure recorded of the last ten tests shall be at or above BPO-10 per cent.
         9.3.2.2. Ambient temperature pressure cycling test in batch testing. The test shall be performed according to paragraph 2.2 (a) to (c) (hydrostatic pressure cycling test) of Annex 3, except that the temperature