1 As a chief officer write a dry
dock specification for the repair for the repair of following
damage that has occurred, stating what factors must be considered when
costing the repairs.” approx.
2 meters of damage to Forepeak tank shell plating must be removed and
replaced along with relevant damaged stiffeners. In your specification, include the services
required, accessory work required and final tests required to ensure
satisfactory completion of the repair.
Steel renewal in no fore peak ballast tank
Please quote for following
scope of work to be carried out during the period of dry docking
tank capacity
5000 m3(sea water)
open manhole covers 02 nos
on deck size 680mmX480mm for the inspection and to be boxed back
after the repair with new jointings indicate repair cost for replacement
of studs.
provide ventilation blowers
for the tank during repair indicate cost per day
provide lighting to the
tank
provide man entry
certificate and hot work permit during the period of repair
clean the ballast tank and
hose down prior to commencement of the repair
erect staging from frame no
46 to 51 at second stringer level to required height and to remove on
completion
erect staging from frame no
46 to 51 for the outside shell on port side to 8meter height from ships
baseline and to remove on completion
crop and renew the
damage section of approx.; 02 square meters side shell plating with damaged
frames in way of the plating area with classification approved materials. the
material specification andthickness is clealy marked on the shell expansion
drawing provided and details of the frames are included in the drawing for
preparation.
Marerials certificates
welding procedure and qualified welders are to be provided during
the repair
work to be completed to the
satisfaction of the classification society surveyor
on completion of the plate
renewl vaccum test or hose test to be done on the plates.
Apply paint
scheme with inside the tank as per the attached specification
Paint supplied by ship
Outside the hull apply the
yard supplied paint two coats of anticorrosive and anti-fouling paint coating
thickness 300 microns are to applied paint supplied should have anti
fouling approval certificate
Clean all debris generated
during repair from the tank
Tank will be pressure tested by ship staff on
completion of the repairs by filling with sea water
Al above wok to be carried out to the satisfaction of
the classification society surveyor
