Cathodic Protection of Pipeline Using Distributed Control System

<div class="floats-full-page floats-full-page-other"><h2>Table 2</h2><div class="floats-full-page-caption">Range of current required for protection of 10 miles 0f 36′′ diameter pipe [<a href="../../681908/#B8">1</a>].</div><div class="floats-full-page-content"><table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr /></td></tr><tr class="thead"><td align="left">Effective coating resistance in ohms for one average square foot</td><td align="center">Current required in amperes</td></tr><tr><td class="thead-hr" colspan="2"><hr /></td></tr><tr><td align="left">Bare Pipe<sup>@</sup></td><td align="center">500</td></tr><tr><td align="left">10,000</td><td align="center">14.91</td></tr><tr><td align="left">25,000</td><td align="center">5.964</td></tr><tr><td align="left">50,000</td><td align="center">1.491</td></tr><tr><td align="left">5,00,000</td><td align="center">0.1491</td></tr><tr><td align="left">10,00,000</td><td align="center">0.0298</td></tr><tr><td align="left">Perfect coating</td><td align="center">0.000058</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr" /></td></tr></table></td></tr><tr class="table-fn"><td><svg height="15.175" id="M19" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 9.7124996 15.175" width="9.7124996" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.012,-0,0,-.012,.062,6.95)"><path d="M545 -14l11 -28q-94 -55 -204 -55q-126 0 -213 80t-87 225q0 112 56 198.5t141.5 129.5t183.5 43q129 0 204.5 -74.5t75.5 -182.5q0 -103 -68 -175.5t-168 -72.5q-36 0 -45 20t0 51l11 58l-2 1q-27 -41 -82.5 -85.5t-87.5 -44.5q-20 0 -34 21.5t-14 62.5q0 46 20 97.5&#10;t60 90.5q78 73 161 74q15 0 50 -8q19 -4 34 -4q-25 -102 -48 -227q-7 -40 -3.5 -53t22.5 -12q57 2 101.5 56.5t44.5 149.5q0 101 -66 159.5t-171 58.5q-139 0 -225.5 -90.5t-86.5 -231.5q0 -52 14.5 -98t45 -86t84 -63t125.5 -23q41 0 89 12.5t71 25.5zM422 380&#10;q-37 0 -65 -30q-23 -25 -40.5 -73t-17.5 -94q0 -45 21 -45q16 0 53.5 31.5t78.5 88.5q14 48 25 111q-24 11 -55 11z" id="x40"></path></g>
</svg>Bare pipe assumed to require a minimum of 1 mA/ft<sup>2</sup>.<br /></td></tr></table></div></div>

Table 2 | Cathodic Protection of Pipeline Using Distributed Control System

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Table 2: Cathodic Protection of Pipeline Using Distributed Control System

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Table 2

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Cathodic Protection of Pipeline Using Distributed Control System

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