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<br />open and be maintained in accot"dance \vith the require- <br /> <br />ments of this article for vent lines. <br /> <br />"'e. Tanks which are to be reinstalled for <br /> <br />fla~nable or combustible liquid service shall comply <br /> <br />with all of thc provisions of Division II of this <br /> <br />article. ' <br /> <br />."Section 12.18 <br /> <br />Section 15.213 of the Fire Code is <br /> <br />hereby amcnded to read as follows: <br /> <br />"'Section 15.213 <br /> <br />DESIGN AND CONSTRUCTION OF <br /> <br />Tl~NKS . Underground Tanks or Enclosed Tanks Inside <br /> <br />of Buildings. Tanks shall be designed and constructed <br /> <br />to withstand safely the service to which subjected. <br /> <br />"-,,- <br /> <br />Cort"osion protection, where needed for the tank and <br /> <br />/ <br />its piping, shall be provided by one or morc, of the <br /> <br />following methods: <br /> <br />II , (a) <br /> <br />Protectivc coatings or wrapplngs, <br /> <br />" I (b) <br /> <br />Cathodic protection, or <br /> <br />" I (c) <br /> <br />Corrosion resistant materials in the. <br />const~~ction of the tank and its piping. <br /> <br />NOTE: Selection of the type of protection <br /> <br />to be employed should be based <br /> <br />upon the corrosion history of the <br /> <br />area and the judgment of a <br /> <br />qualified engineer. <br /> <br />Mqt~ria1 other than steel, if used, shall be of <br /> <br />suitable durability and of thickness providing <br /> <br />equivalent strength to that provided by steel. <br /> <br />stee/l commonly known as "mill seconds" shall not he <br /> <br />used. steel tanks shall be of a minimum gauge (U.S. <br /> <br />standard) in accordance with Table 15.213. <br /> <br />-16- <br />