<html> <head> <link rel="STYLESHEET" href="../../../cp.css" Type="text/css"> <meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-1252"> <meta NAME="GENERATOR" CONTENT="Microsoft FrontPage 3.0"> <meta NAME="AUTHOR" CONTENT="© Copyright 2000 Achilles Technology Limited. All Rights Reserved"> <title>Corrosion Prevention using Impressed Current Cathodic Protection</title> </head> <body BGCOLOR="#FFFFFF"> <p><img SRC="../Images/casebacktop.gif" width="700" height="82"> </p> <p><span class="mainlight">Corrosion Prevention using Structural Healthcare Systems Case No. 13</span></p> <p><span class="header">Barr Beacon Reservoir, Walsall<br> Monitoring and Protection of Roof Support Columns of the Underground Reservoir</span></p> <p><img ALIGN="right" SRC="../Images/Barr%20Beacon.JPG" border="1" vspace="15" width="359" height="247"> <span class="maindark">Year of Installation:</span><span class="main"> 1999</span><br> <span class="maindark">Anode Used:</span><span class="main"> Ebonex® conductive ceramic anodes</span><br> <span class="maindark">Monitoring Used:</span><span class="main"> C-Probe CP10P and CP101</span><br> <span class="maindark">Management System:</span><span class="main"> AchillesCP and AchillesEDC</span><br> <span class="maindark">Additional Treatments:</span><span class="main"> None.</span> </p> <p><span class="mainlight">Description:</span> <br> <span class="main">Barr Beacon is located near Perry Barr, Walsall and is one of many underground reservoirs within the asset management scope of South Staffordshire Water PLC.</p> <p>C-Probe was contracted to design, supply, install, commission and manage a pilot scheme with the objective of providing a greater understanding of the behaviour of reinforced concrete columns supporting the roof of Barr Beacon reservoir.</p> <p>To this end a system was designed for both the East and West tanks with both cathodic protection and early detection of corrosion systems installed to a total population of 8 columns.</p> <p>In both tanks 2 columns were installed with the a discrete anode cathodic protection system and 2 columns with corrosion potential and corrosion rate embedded monitoring probes.</p> <p>For the cathodic protection columns it was also within the scope of the design to investigate the effectiveness of the systems installed to both 100% and 50% of the column height. The underlying issue here was that the reservoir is filled to at least 60% capacity all the time and rarely empty and as such the most susceptible area for corrosion protection to be needed was likely to be at non-water saturated areas immediately below and above the water-line.</p> <p>The systems have been incorporated into an integrated neural network management system managed using the C-Probe Internet interactive management system – AiMS.</p> <p>The systems have been operated successfully for over 12-months with valuable information being achieved to predict the ongoing maintenance requirements of this important reservoir structure.</p> </span> </body> </html>