For the purpose of steel renewal, sand blasting and coating,
four zones A, B, C and D are defined, as shown in figure 1.
Representative thickness measurements shall be taken for each zone
and shall be assessed against the criteria in 2.1.
In case of integral brackets, when the criteria in 2.1 are not
satisfied for zone A or B, steel renewal, sand blasting and coating, as
applicable, shall be done for both zones A and B.
In case of separate brackets, when the criteria in 2.1 are not
satisfied for zone A or B, steel renewal, sand blasting and coating shall be done
for each one of these zones, as applicable.
When steel renewal is required for zone C according to 2.1, it shall be done for
both zones B and C. When sand blasting and coating is required for zone C
according to 2.1, it shall be done for zones B, C and D.
When steel renewal is required for zone D according to 2.1, it
needs only to be done for this zone. When sand blasting and coating is required
for zone D according to 2.1, it shall be done for both zones C and D.
Special consideration may be given to zones
previously renewed or re-coated, if found in "as new" condition (i.e., without
breakdown or rusting) by the Administration or a classification society which is
recognized by the Administration in accordance with the provisions of SOLAS
When adopted, on the basis
of the renewal thickness criteria in 2.1, in general coating shall be applied in
compliance with the requirements of the organization, as applicable.
Where, according to the requirements in 2.1, a
limited number of side frames and brackets are shown to require coating over part
of their length, the following criteria apply:
- The part to be coated
- the web and the face plate of the side
frames and brackets,
- the hold surface of side shell,
hopper tank and topside tank plating, as applicable, over a width not less
than 100 mm from the web of the side frame.
- Epoxy coating or equivalent shall be applied. In all cases, all the
surfaces to be coated shall be sand blasted prior to coating application.