Section 18.78.045. Operation and maintenance of corrosion protection.

	(a)  The owner or operator of a steel UST with corrosion protection shall meet the requirements of this section to ensure that a release caused by corrosion is prevented while the system is used to store petroleum.  
	(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 that is in contact with the ground. This requirement applies to single and double wall steel tanks and piping.  
	(c)  A UST with a cathodic protection system must be inspected for proper operation by a cathodic protection tester who is certified under 18 AAC 78.410. An inspection under this subsection must be conducted as follows:  
		(1) a cathodic protection system must be tested within 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 under this section must be in accordance with the National Association of Corrosion Engineers Standard RP0285-2002, Standard Recommended Practice-Corrosion Control of Underground Storage Tank Systems by Cathodic Protection, 2002, adopted by reference in 18 AAC 78.025(f).  
	(d)  The department will, in its discretion, approve a standard other than that specified in (c)(2) of this section if the department finds it to be no less protective of human health, safety, and the environment than the standard specified.  
	(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)  As required by 18 AAC 78.100(f), the owner or operator of a UST with cathodic protection shall keep records of the operation of the cathodic protection system which are sufficient to demonstrate compliance with the performance standards set out in this section, including the results of  
		(1) the last three inspections required in (e) of this section; or  
		(2) testing from the last two inspections required in (c) of this section.  

Authorities

46.03.020;46.03.365;46.03.375

Notes

Reference

18 AAC 78.025
18 AAC 78.055
18 AAC 78.100

Authority

AS 46.03.020 AS 46.03.365 AS 46.03.375 Editor's note: Information 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.

History

Eff. 3/25/91, Register 118; am 11/3/95, Register 136; am 1/30/2003, Register 165; am 7/25/2012, Register 203

References

18.78.045;18.78.025