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<p class="MsoBodyText"><span lang="EN-GB">This document gives a method for determining the resistance to cracking of steel pipes in sour service.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This test method employs a full-scale test specimen consisting of a short length of pipe (a ‘full ring’), sealed at each end to contain the sour test environment within. The test method applies to any pipe; seamless, longitudinally welded (with or without filler), helical welded, and to girth welds between pipes.</span></p>
<p class="Note"><span lang="EN-GB">NOTE 1<span style="mso-tab-count: 1;"> </span>The specimen is usually a pipe but can also consist of flange neck or section of a bend, or other tubular component or a combination of the above.</span></p>
<p class="Note"><span lang="EN-GB">NOTE 2<span style="mso-tab-count: 1;"> </span>This test method can also be used for corrosion resistant alloys (CRAs).</span></p>
<p class="MsoBodyText"><span lang="EN-GB">The method utilizes ovalization by mechanical loading to produce a circumferential stress, equal to the target hoop stress, at two diametrically opposite locations on the inside surface of the test specimen. The test specimen is then subjected to single sided exposure to the sour test environment.</span></p>
<p class="Note"><span lang="EN-GB">NOTE 3<span style="mso-tab-count: 1;"> </span>The test also allows measurement of hydrogen permeation rates.</span></p>
Reģistrācijas numurs (WIID)
79555
Darbības sfēra
<p class="MsoBodyText"><span lang="EN-GB">This document gives a method for determining the resistance to cracking of steel pipes in sour service.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This test method employs a full-scale test specimen consisting of a short length of pipe (a ‘full ring’), sealed at each end to contain the sour test environment within. The test method applies to any pipe; seamless, longitudinally welded (with or without filler), helical welded, and to girth welds between pipes.</span></p>
<p class="Note"><span lang="EN-GB">NOTE 1<span style="mso-tab-count: 1;"> </span>The specimen is usually a pipe but can also consist of flange neck or section of a bend, or other tubular component or a combination of the above.</span></p>
<p class="Note"><span lang="EN-GB">NOTE 2<span style="mso-tab-count: 1;"> </span>This test method can also be used for corrosion resistant alloys (CRAs).</span></p>
<p class="MsoBodyText"><span lang="EN-GB">The method utilizes ovalization by mechanical loading to produce a circumferential stress, equal to the target hoop stress, at two diametrically opposite locations on the inside surface of the test specimen. The test specimen is then subjected to single sided exposure to the sour test environment.</span></p>
<p class="Note"><span lang="EN-GB">NOTE 3<span style="mso-tab-count: 1;"> </span>The test also allows measurement of hydrogen permeation rates.</span></p>
