BS ISO 15500-16:2020 pdf free.Road vehicles—Compressed natural gas (CNG) fuel system components.
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1127, Stainless steel tubes一Dimensions, tolerances and conventional masses per unit length ISO 15500-1, Road vehicles一Compressed natural gas (CNG) fuel system components一Part 1: General  requirements and definitions ISO 15500 2:2016, Road vehicles 一Compressed natural gas (CNG) fuel system components一Part 2: Performance and general test methods. For the purposes of this document, the terms and definitions given in ISO 15500-1 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: 一ISO Online browsing platform: available at https://www.iso.org/obp 一IEC Electropedia: available at http://www.electropedia.org/ Test the rigid fuel line according to the procedure for testing hydrostatic strength specified in ISO 15500-2. The test pressure shall be four times the working pressure.The higher hydrostatic test pressure for the rigid fuel line compared to the components in the other parts of the ISO 15500 series is due to the necessary provisions to cope with eventual damage or abrasions under normal operation. Test the rigid fuel line in accordance with the procedure for testing continued operation given in ISO 15500-2, for a total of 100 000 cycles. Following cycling testing, perform the hydrostatic test in accordance with 6.2.Test the rigid fuel line according to the following procedure and acceptance criterion. a) Select a mandrel with a diameter according to ISO 15500-2:2016, Table 1. b) Bend the rigid fuel line over this mandrel once, forming a“U” shape. c) Close the ends of the rigid fuel line and subject it to the hydrostatic test of 6.2. At the completion of the hydrostatic test, the rigid fuel line shall be tested according to the procedure for leakage testing specified in ISO 15500-2. BS ISO 15500-16 pdf download.