<p>This document specifies requirements concerning the approval and/or homologation of welding processes, contractors, welders, inspectors and acceptance of welded joints in the factory and/or track.</p>
<p>This document is applicable to the following rail welding processes:</p>
<ol>
<li>flash butt welding (FBW);</li>
<li>gas pressure welding (GPW);</li>
<li>aluminothermic welding (ATW);</li>
<li>enclosed arc welding (EAW).</li>
</ol>
<p>In this document, 43 kg/m to 75 kg/m new flat-bottomed rails of the same profiles and same steel grades are used as the subject of welding.</p>
<p>This document does not specify requirements or test methods specific to each welding process. These are to be prescribed in the subsequent parts of the ISO 23300 series.</p>
<p>Concerning butt welding, this document is restricted to connecting rail ends.</p>
<p>This document does not cover the welding for construction of crossings, railway switches, signal bond installation or restoration of rails.</p>
<p>This document does not cover any safety regulations for welding operations.</p>
<p>In this document, the qualifications of individuals and organizations that are approved by the railway authority for rail welding are not specified.</p>
Registration number (WIID)
75188
Scope
<p>This document specifies requirements concerning the approval and/or homologation of welding processes, contractors, welders, inspectors and acceptance of welded joints in the factory and/or track.</p>
<p>This document is applicable to the following rail welding processes:</p>
<ol>
<li>flash butt welding (FBW);</li>
<li>gas pressure welding (GPW);</li>
<li>aluminothermic welding (ATW);</li>
<li>enclosed arc welding (EAW).</li>
</ol>
<p>In this document, 43 kg/m to 75 kg/m new flat-bottomed rails of the same profiles and same steel grades are used as the subject of welding.</p>
<p>This document does not specify requirements or test methods specific to each welding process. These are to be prescribed in the subsequent parts of the ISO 23300 series.</p>
<p>Concerning butt welding, this document is restricted to connecting rail ends.</p>
<p>This document does not cover the welding for construction of crossings, railway switches, signal bond installation or restoration of rails.</p>
<p>This document does not cover any safety regulations for welding operations.</p>
<p>In this document, the qualifications of individuals and organizations that are approved by the railway authority for rail welding are not specified.</p>
