Section 18 AAC 78.045 - Operation and maintenance of corrosion protection(a) The owner or operator of a steel UST with corrosion protection shall comply with the requirements of this section to ensure that a release caused by corrosion is prevented until the UST is permanently closed or undergoes a change-in-service under 18 AAC 78.085.(b) A corrosion protection system must be operated and maintained to continuously provide corrosion protection to the metal components of that portion of the tank and piping that routinely contains petroleum and th at is in contact with the ground. This requirement applies to single and double wall steel tanks and piping. For purposes of this subsection, piping that routinely contains petroleum includes all product piping, except for vent lines and except for most tank fill pipe configurations.(c) A UST equipped with a cathodic protection system must be inspected for proper operation by a cathodic protection tester who is certified under 18 AAC 78.4 10 in accordance with the following requirements: (1) a cathodic protection system must be tested not later than six months after installation and at least every three years after that, or according to another reasonable testing schedule approved by the department; and(2) the criteria used to determine if cathodic protection is adequate as required under this section must be in accordance with one of the following requirements: (A) NACE International Standard RP0285-2002, Standard Recommended Practice Corrosion Control of Under ground Storage Tank Systems by Cathodic Protection , 2002, adopted by reference.(B) NACE International Test Method TM0101-2012, Measurement Techniques Related to Criteria (or Cathodic Protection on underground Storage Tank Systems, March 2012, adopted by reference;(C) NACE International Test Method TM0497-2012, Measurement Techniques Related to Criteria (or Cathodic Protection on underground or Submerged Metallic Piping Systems, June 2012, adopted by reference;(D) Steel Tank Institute Recommended Practice R051, Cathodic Protection Testing Procedures for STl-P3® USE, January 2006, adopted by reference;(E) NACE International Standard Practice SP0169-2007, Control of' External Corrosion 011 Underground or Submerged Metallic Piping Systems, reaffirmed March 15, 2007, adopted by reference; or(F) another standard that is no less protective of human health and safety and the environment and approved by the department.(e) A UST with an impressed current cathodic protection system must be inspected every 60 days to ensure that the equipment is running properly. The owner or operator shall document the findings of each inspection. The owner or operator may use a form provided by the department or an equivalent form to document those findings. If the inspection of the impressed current cathodic protection system indicates a redline of zero, the owner or operator shall notify the department and take corrective action to investigate and, if necessary, to correct the problem.(f) For a UST with cathodic protection, records of the operation of the cathodic protection system must be maintained in accordance with 18 AAC 78.056 to demonstrate compliance with the performance standards in this section. These records must provide the following: (1) the results of the last three inspections required in (e) of th is section; and(2) the results of testing from the last two in spections required in (c) of this section.Eff. 3/25/91, Register 118; am 11/3/95, Register 136; am 1/30/2003, Register 165; am 7/25/2012, Register 203; am 9/27/2018,Register 227, October 2018Information about how to review or obtain a copy of the document referred to in 18 AAC 78.045 is in the editor's note at 18 AAC 78.025.
Authority:AS 46.03.020
AS 46.03.365
AS 46.03.375