2.1.1 The full
requirements of the annual and underwater surveys are to be complied
with together with the following:
The spaces between the safety and top working decks are to be
cleared and cleaned as necessary and examined; lining and pipe casings
are to be removed as required.
2.1.2 The Surveyor
may require the gauging of the thickness of the materials of any portion
of the structure by means of ultrasonic testing, where signs of wastage
are evident or wastage is normally found. Any parts of the structure
which are found defective or materially reduced in scantlings are
to be made good by materials of the approved scantlings and quality.
2.1.3 Where
the inner surface of the bottom plating is covered with cement, asphalt
or other composition, the removal of this covering may be dispensed
with, provided it be inspected, tested by beating or chipping, and
found sound and adhering satisfactorily to the steel.
2.1.4 Pontoon
and side wall tanks are to be cleaned and examined internally and
tested by a head sufficient to give the maximum pressure that can
be experienced in service.
2.1.5 Wood deck
sheathing is to be examined, if decay or rot is found, or the wood
is excessively worn, it is to be renewed. Attention is to be given
to the condition of the plating under the sheathing or other deck
covering. If it is found that such coverings are broken or not adhering
closely to the plating, sections are to be removed as necessary to
ascertain the condition of the plating.
2.1.6 The Surveyor
is to satisfy himself as to the efficient condition of the following:
Means of escape from:
-
Machinery spaces.
-
Crew spaces.
-
Spaces in which
crew are normally employed.
Means of communication between control position and machinery
spaces.
2.1.7 For floating
docks not more than 15 years old, fuel oil tanks forming part of the
main structure need not be examined internally. When examining tanks
internally, the Surveyor is to satisfy himself as to the condition
of the pump suctions.
2.1.9 In addition
to the thickness measurement to ascertain local wastage, the outside
plating of the walls and pontoons are to be gauged by ultrasonic testing
to determine the amount of any general diminution in thickness. The
gauging is to be done in at least two places in each strake of plating
on each side within the amidship half-length.
2.1.10 Measured
thicknesses are to be reported. Where gauged plates are renewed, the
thickness of adjacent plates in the same strake are to be reported.