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04/19/23

CORROSION Protection

Alaska

Spring 2004

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04/19/23

Goals

Ensure tank and piping are safe from corrosion

Only applies to the portion of the UST system that routinely contains product. Tank and product piping only.

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04/19/23

First step for Operator

Figure out the construction material Tank Piping

Figure out cathodic protection option Fiberglass or non-metallic Galvanic Impressed current

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04/19/23

If non-metallic

Confirm through documentation for inspector.

That’s it.

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04/19/23

If Galvanic

Provide inspector with any previous test results – Look for them in your previous inspection report.

Have a cathodic protection test done if more than 3 years since last test.

Keep track of test results So long as there is enough cathodic

protection, nothing more to do

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04/19/23

Impressed Current Rectifier

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04/19/23

If Impressed Current

Find your 60 day rectifier log or start one. Provide inspector with any previous test

results and 60 day rectifier log. Have a cathodic protection test done if

more than 3 years since last test or as recommended by a Corrosion Expert.

Have rectifier checked and serviced, as needed.

Keep track of test records

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04/19/23

Tank lining

Not common No further testing so long as

cathodic protection present and maintained

Studies of liner failures are starting to come in.