1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULOctober 16, 20131UL 2133Outline of Investigation for Compressed Gas Cylinder Safety CapsIssue Number: 1October 16, 2013Summary of TopicsThis is the first issue of the Outline of Investigation for
2、 Compressed GasCylinder Safety Caps, UL 2133. The safety cap is installed on a DOT tankafter the transportation cap is removed.COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULOCTOBER 16, 2013UL 2133
3、2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 General 42.1 Components .42.2 Units of measurement .42.3 Undated references .43 Glossary .5CONSTRUCTION4 General 55 Materials and Assembly .56
4、 Protection Against Corrosion .5PERFORMANCE7 Impact Test 68 Vertical Drop Test .69 Drop Test - 45 Degree .6MARKING10 Permanence 6OCTOBER 16, 2013 UL 2133 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirement
5、s cover compressed gas cylinder safety caps. The safety cap is installed on a DOTtank after the transportation cap is removed.2 General2.1 Components2.1.1 Except as indicated in 2.1.2, a component of a product covered by this outline shall comply with therequirements for that component.2.1.2 A compo
6、nent is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this outline, orb) Is superseded by a requirement in this outline.2.1.3 A component shall be used in accordance with its r
7、ating established for the intended conditions ofuse.2.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as certaintemperatures not exceeding specified limits, and shall be
8、 used only under those specific conditions.2.2 Units of measurement2.2.1 When a value for measurement is followed by a value in other units in parentheses, the secondvalue may be only approximate. The first stated value is the requirement.2.3 Undated references2.3.1 Any undated reference to a code o
9、r standard appearing in the requirements of this outline shall beinterpreted as referring to the latest edition of that code or standard.OCTOBER 16, 2013UL 21334UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3 Glossary3.1 For the purposes of
10、this outline, the following definitions apply.3.2 ACCESSIBLE PART A part located so that it is able to be contacted by a person, either directlyor by means of a probe.3.3 TEST FAILURE Visible weakening of the test unit or component or other damage in which thestructure or component is buckled, twist
11、ed, sheared, torn, or fractured as a result of the test.CONSTRUCTION4 General4.1 A product shall be constructed so that it will have the strength and durability to withstand normalusage and to comply with the performance requirements.4.2 An exposed metal surface shall be free from sharp edges, burrs
12、 and other features that constitute arisk of injury to persons.4.3 All welds shall be free from undercuts, cracks, and closely spaced in-line surface porosity.5 Materials and Assembly5.1 Sharp edges shall not be accessible during user assembly or normal use. An accessible edge shallbe smooth and we
13、ll rounded to reduce the risk of a cut-type injury when contacted during user assemblyor normal use.5.2 All metal parts and fittings shall be made of aluminum or steel alloys, wrought iron, malleable iron, orother metal that is of equivalent strength for the intended purpose and shall be securely at
14、tached bymeans of rivets, bolts, screws, or other means determined to be the equivalent.5.3 Nuts shall be lock nuts or they shall be used with lock washers.6 Protection Against Corrosion6.1 All hardware and materials shall be of a grade or alloy known to be resistant to atmospheric corrosionor shall
15、 be additionally protected against corrosion.OCTOBER 16, 2013 UL 2133 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPERFORMANCE7 Impact Test7.1 The safety cap shall be secured in its intended manner on an empty compressed gas cylinder. Thee
16、mpty compressed gas cylinder shall have a cylinder valve installed.7.2 The face of the safety cap is to be struck by a 37 lb weight causing an impact of 250 ft-lb.7.3 After the impact, the cap is removed and the cylinder valve shall have no damage. The cylinder valvehand wheel may crack or break.8 V
17、ertical Drop Test8.1 The safety cap shall be secured in its intended manner on an empty compressed gas cylinder. Theempty compressed gas cylinder shall have a cylinder valve installed.8.2 The empty compressed gas cylinder is then dropped from 4 feet as to strike a concrete floor on thetop of the cap
18、8.3 After the impact, the cap is removed and the cylinder valve shall have no damage. The cylinder valvehand wheel may crack or break.9 Drop Test - 45 Degree9.1 The safety cap shall be secured in its intended manner on an empty compressed gas cylinder. Theempty compressed gas cylinder shall have a
19、cylinder valve installed.9.2 The empty compressed gas cylinder is then dropped from 4 feet as to strike a concrete floor at anangle of 45 degrees.9.3 After the impact, the cap is removed and the cylinder valve shall have no damage. The cylinder valvehand wheel may crack or break.MARKING10 Permanence
20、10.1 A required marking shall be legible and permanent.10.2 A required marking shall be molded, die-stamped, paint-stenciled, stamped or etched metal that ispermanently secured, or indelibly stamped lettering on a pressure-sensitive label secured by adhesivethat, upon investigation, is found to be a
21、cceptable for the application. Ordinary usage, handling, storage,and the like, of a product are considered in the determination of the permanence of a marking.10.3 Unless it has been investigated and found to be acceptable for the application, a pressure-sensitivelabel or a label that is secured by
22、cement or adhesive and that is required to be permanent shall complywith the requirements in the Standard for Marking and Labeling Systems, UL 969.OCTOBER 16, 2013UL 21336UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL10.4 If a manufacturer p
23、roduces products at more than one factory, each product shall have a distinctivemarking to identify it as the product of a particular factory.OCTOBER 16, 2013 UL 2133 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULOCTOBER 16, 2013UL 21338No Text on This Page
