3.2.1 The coating system in cargo tanks should
be examined in connection with:
-
.1 intermediate surveys for all crude oil tankers
of 5,000 tonnes deadweight or above exceeding ten years of age;
-
.2 renewal surveys for all crude oil tankers of
5,000 tonnes deadweight or above; and
-
.3 incidents during service of the ship indicate
damage to the coating of cargo oil tanks or areas coated.
3.2.2 The condition of the coating in crude oil
cargo tanks should be assigned and categorized as GOOD, FAIR or POOR
based on visual inspection and estimated percentage of areas with
coating failure and rusty surfaces (see table 1) and recordedfootnote. In the case of widespread blisteringfootnote which has not been perforated a further
evaluation of blistering percent and coating efficiency could be carried
out by in order to decide categorization of coatingfootnote.