INTERNATIONAL STANDARD
cylinderandvalvematerialswithgas Gascylinders-Compatibilityof contents-
Part 5:Testmethodsforevaluatingplasticliners
Bouteillesa gaz -Compatibilite des materiaux des bouteilles et desrobinets avec les contenus gazeux
Partie 5: Methodes d’essai pour I’evaluation des liners en plastique
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Contents
Page
Foreword. ivIntroduction. V1 Scope.. 12 Normative references. 13 Terms and definitions. 14 General requirements. 25 Tests to be performed on specimens. 5.1 Permeation test. 2 25.1.1 Test bench and set-up. Disc samples. 25.1.2 5.1.3 Procedure. 55.1.4 5.1.5 Calculation of the permeability coefficient. Recording and interpretation of test results. 6 65.2 Swelling/blistering test.. 75.2.2 5.2.1 Recording and interpretation of tests results. Disc samples. 7 75.3 Ageing test. 5.3.1 Samples. 8 85.3.2 Recording and interpretation of the results. Procedure. 8Tests to be performed on cylinders. 5.3.3 8 66.1 Liner collapse due to internal pressure in the cylinder being below atmosphericpressure. 6.1.1 General. 66.1.2 Evaluation parameters. Procedure. 66.2 Permeability test. 6.1.3 6 66.2.2 6.2.1 Procedure. General. 6 6Liner collapse and blistering test. 6.2.3 Evaluation parameters. 106.3 6.3.1 General. 10 106.3.2 6.3.3 Evaluation parameters. Procedure. 10 107 Rejection and rendering cylinders used for testing unserviceable. 128 Test report. 12Bibliography. 14
Foreword
bodies (ISO member bodies). The work of preparing International Standards is normally carried outthrough ISO technical mittees. Each member body interested in a subject for which a technical mittee has been established has the right to be represented on that mittee. InternationalISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of organizations governmental and non-governmental in liaison with ISO also take part in the work.electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance aredifferent types of ISO documents should be noted. This document was drafted in accordance with theeditorial rules of the ISO/IEC Directives Part 2 (see
Attention is drawn to the possibility that some of the elements of this document may be the subject ofany patent rights identified during the development of the document willbe in the Introduction and/or patent rights.ISO shall not be held responsible for identifying any or all such patent rights.Details ofon the ISo list of patent declarations received (see
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For an explanation of the voluntary nature of standards the meaning of ISO specific terms andexpressions related to conformity assessment as well as information about ISO's adherence to
This document was prepared by Technical Committee ISO/TC 58 Gas cylinders in collaboration withAgreement). cylinders in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
A list of all parts in the ISO 11114 series can be found on the ISO website.
po spreus puu sasn a o paap a pinos panop s uo susanb o yeqpaa uplete listing of these bodies can be found at
Introduction
Non-metallic materials are used for the manufacturing of liners of some posite gas cylinders andtherefore are in contact with gas contents.
and to give test procedures and evaluation parameters.
This document provides some testing methodologies to evaluate suitability of plastic materialsconcerning the risks identified in ISO 11114-2. Furthermore this document is intended to be usedtests as well as the criteria while this document describes the test procedure.
