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0 0 <br /> allows for tank upgrading for corrosion protection by lining without the addition of cathodic protection. <br /> 40 CFR part 280 states "To use this technique as the sole method for meeting the corrosion protection <br /> upgrade, the tank must be internally inspected within 10 years and every 5 years thereafter." Chapter B <br /> addresses the 10 year and five year internal inspection requirement. <br />