AMPP CP1 Tester Practice Questions - AMPP CP1 Cathodic Protection Tester Exam

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What is the standard -850 mV criterion for cathodic protection of buried steel as specified in NACE SP0169, and what reference electrode is it measured against?

-850 mV measured to a saturated Ag/AgCl reference electrode -850 mV (polarized or with IR drop considered) measured to a saturated copper/copper sulfate (CSE) reference electrode -850 mV measured to a standard hydrogen electrode (SHE) -850 mV measured to a zinc reference electrode

Correct Answer:

-850 mV (polarized or with IR drop considered) measured to a saturated copper/copper sulfate (CSE) reference electrode

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