5<age≤10
years
|
10<age≤15
years
|
Age>15
years
|
1
|
2
|
3
|
Overall survey
of representative salt-water ballast tanks, selected by the attending surveyor
(the selection should include fore and aft peak tanks and three other tanks)
(see 4.2)
|
Overall survey
of all salt water ballast tanks, including combined cargo/ballast tanks where
fitted (see 4.3)
|
As for renewal
survey given in annex 1
|
|
Overall survey
of at least two representative cargo tanks
|
As for renewal
survey given in annex 1
|
|
Close-up
survey in salt-water ballast tanks of:
- all web frames (1) in one complete tank (see Note 1)
- the knuckle area and the upper part (5 m approximately) of one web
frame in each remaining ballast tank (6)
- one transverse bulkhead (4) in each complete tank
(see Note 1) (see 4.2.3)
|
As for renewal
survey given in annex 1
|
|
Close-up
survey in two cargo tanks (or two combined cargo/ballast tanks, where
fitted): the extent of survey should be based on the records of
the previous renewal survey and repair history of the tanks (see 4.3)
|
As for renewal
survey given in annex 1
|
Thickness
measurements of those areas found to be suspect areas, as defined in 1.2.7, at
the previous renewal survey (see 4.3.5)
|
Thickness
measurements of those areas found to be suspect areas, as defined in 1.2.7, at
the previous renewal survey (see 4.3.5)
|
As for renewal
survey given in annex 2
|
Notes :
(1), (4) and (6) are areas to be subjected to close-up
surveys and thickness measurements (see appendix 3 of annex 3).
(1)Web frame means vertical web in side tank, hopper web in hopper
tank, floor in double bottom tank and deck transverse in double deck tank
(where fitted), including adjacent structural members. In fore and aft peak
tanks web frame means a complete transverse web frame ring including
adjacent structural members.
(4)Transverse bulkhead complete in ballast tanks, including girder
system and adjacent structural members, such as longitudinal bulkheads,
girders in double bottom tanks, inner bottom plating, hopper side, inner
hull longitudinal bulkhead, connecting brackets.
(6)The knuckle area and the upper part (5 metres approximately),
including adjacent structural members. Knuckle area is the area of the web
frame around the connections of the slope hopper plating to the inner hull
bulkhead and the inner bottom plating, up to 2 metres from the corners both
on the bulkhead and the double bottom.
Note 1 Complete ballast tank: means double bottom tank plus double
side tank plus double deck tank, as applicable, even if these tanks are
separate.
|