2.4.2 Visual inspection surveys with measurements of potential are to be taken
periodically and any deficiencies in terms of potential readings above the
protection potential of -0,8V Ag/AgCl or detached anodes corrected by the addition
of extra sacrificial anodes or adjustment of ICCP system controls.
2.4.3 For ICCP systems, measurements are to be taken to confirm that there is
no over-protection. Over-protection is considered to be readings more negative than
-1.2V Ag/AgCl.
2.4.4 Stray currents, current drain and including that from the mooring system
and interference from ships, other vessels or installations in the vicinity are to
be evaluated and appropriate measures taken.