SURFACE PREPARATION AND FULL PAINT SCHEME RENEWAL OF EXTERNAL UW HULL IN SHIP

Jet washing.High Pressure Jet washing of outer water hull at 3000 PSI..

Anode Masking.Masking of all ICCP anodes and reference Electrodes using hard covers. Masking is required to be water / dust proof and should be able to withstand a pressure of 30000 psi. It has to be maintained throughout the drydock period..

Paint Removal from External UW Hull.Ultra High Pressure Hydro Jet Blasting Confirming to WJ(2) & (L) Std..

Surface Preparation on under water Hull – Grit Blasting.Grit blasting to SA 2.5 std using ACCI Grit Gr (17-24) on outer hull area..

Surface Preparation on under water Hull –Vacuum Blasting.Vaccum blasting to SA 2.5 std using ACCI Grit Gr (17-24) on outer hull area..

Drain covers.The dock drains are to be covered adequately to prevent grit from choking pipelines.

Disking.Disking on outer water hull area using 3mm paper.

Paint application.Paint application of each coat of primer, anti-corrosive, tie coat and antifouling using airless spraying machine for achieving DFT as specified by the user..

Weather Proof enclosure.Weather Proof enclosure to be made out of waterproof sheets – clean white sheets..

Provision of Aerial Work Platforms..02 Aerial Work Platforms (cherry pickers) are to be hired by the firm for undertaking the work (for a period of 120 days). Nil scaffolding/ Aerial Work Platforms would be provided ND(V) for subject work..

Cleanship of the work area.Cleanship of the work area has to be undertaken on a daily basis so as to avoid accumulation of unnecessary garbage/ refit waste on the dock floor. Cleanship of dockfloor, drains, dock grooves are to be undertaken. Any seagrowth/ other waste generated as part of the job has to be cleared on daily basis..

Process monitoring and Report Submission.A qualified supervisor/ Inspector is to be appointed for Process monitoring and daily work report submission. WFT readings are to be taken during painting application. Post curing, DFT of the same area is to be checked to avoid under/over coating. DFT mapping of external underwater hull has to be undertaken post completion of work. The same has to be undertaken by dividing the external UW hull area into continuous grids of 1 sqm, with DFT being measured at each corner and center of individual grids. The average value of above five readings will be considered as the final DFT of that region. In addition to the log books submitted by the firm, it is required that the daily work progress be recorded as per the format specified by the user..

M V KIRAN BLASTING WORKS

SRISAI OILFIELD EQUIPMENTS AND MARINE SERVICES PVT LTD

ASMACS