Mich. Admin. Code R. 29.2115 - Operations and maintenance of corrosion protection

Rule 15. Section 280.31 is amended to read as follows:

Section 280.31. All owners and operators of steel UST systems with corrosion protection shall comply with the following requirements to ensure that releases due to corrosion are prevented for as long as the UST system is used to store regulated substances:

(a) All corrosion protection systems are operated and maintained to continuously provide corrosion protection to the metal components of that portion of the tank and piping that routinely contain regulated substances and are in contact with the ground.

(b) All UST systems equipped with cathodic protection systems are inspected for proper operation by a qualified cathodic protection tester in accordance with the following requirements:

(1) Frequency. All cathodic protection systems shall be tested upon completion of underground piping and tank installation and backfilling, but before placement of any permanent or hard surface over the UST system. Testing must be done within 6 months of installation regardless of the surface over the UST system. Testing must also be conducted every 3 years after the initial testing.

(2) Inspection criteria. The corrosion engineer who designs the system shall specify the criteria that are used to determine that cathodic protection is performing adequately. If the corrosion engineer does not specify criteria, then the criteria must be as specified in NACE international standard practice SP0285-2011.

(c) UST systems with impressed current cathodic protection systems shall also be inspected every 60 days to ensure the equipment is running properly.

(d) For UST systems using cathodic protection, records of the operation of the cathodic protection shall be maintained (in accordance with section 280.34) to demonstrate compliance with the performance standards in this section. These records must provide both of the following:

(1) The results of the last 3 inspections required in paragraph (c) of this section.

(2) The results of testing from the last 2 inspections required in paragraph (b) of this section.

(e) For galvanic anode systems equipped with an approved buried copper-copper sulfate reference electrode that can be read at a surface test station, the inspection may be made using a test measurement device designed for tank O/O not meeting the cathodic protection tester definition. The O/O shall be trained in the testing procedure and shall be familiar with the testing specifications of the galvanic anode system. Tests shall be made in accordance with the requirements of subsection (b) of this section.

(f) Cathodic protection testing is not required for the following:

(1) A composite tank which meets the requirements of subsection 280.20(a)(3) and that is equipped with galvanic anodes installed by the tank manufacturer. The tank shall be installed and tested in accordance with section 280.20(d).

(2) A 360-degree double-wall steel tank equipped with galvanic anodes. Interstitial monitoring of the tank must be conducted in accordance with subsection 280.43(g).

(g) Another method determined by the department to be equally protective.

Notes

Mich. Admin. Code R. 29.2115

1998-2000 AACS; 2018 MR 21, Eff. 11/14/2018