Cargo Hold
8Pages

Catalog excerpts

Marine Coatings.. Cargo Hold Coatings Recommended Working Procedures AKZO NOBEL

Introduction Successful in service performance of cargo hold coating systems depends not only on the correct choice of coating but also on the procedures adopted for surface preparation and paint application. This document is designed to assist ship operators, shipyar ds and contractors achieve the optimum preparation and application standards so maximising performance of cargo hold coatings applied at maintenance and repair drydocking. For simplicity, each section assumes surface preparation by abrasive blasting. Hold Condition - Pre Contract Prior to commencement of the contract it is...

Open the catalog to page 2

Adoption of hydroblasting as a method of surface preparation continues to increase worldwide. “Successful in service performance of cargo hold coating systems depends not only on the correct choice of coating but also on the procedures adopted for surface preparation and paint application.” Pitted steel after grit blasting to Sa2 (ISO 8501-1 : 1988, SSPC-SP6). Substrate condition commonly found in bulk carriers greater than 10 years of age. Gritblasting to Sa2 (ISO 8501-1 : 1988, SSPC-SP6) on hatch coaming area. Surface Preparation Compressed Air Surface preparation must be in accordance...

Open the catalog to page 3

Scaffolding (Staging) Type Staging should be designed to allow thor ough cleaning and acceptable substrate access. International Paint recommend that staging should be the ‘turn over’ type, when local safety r egulations permit. Tubular scaffolding should not mask surfaces to be coated. Wher e contact with surfaces is necessary, spade ends should be used. Tubular scaffolding should be plugged or capped prior to abrasive blasting to prevent ingress of grit and dirt (which may be subsequently dislodged, leading to coating contamination). Layout Staging should afford easy and safe access to...

Open the catalog to page 4

Cargo hold hatch covers must remain open during coating curing period. “For optimum performance of cargo hold coatings, close control of dry film thickness is essential.” Coatings Application Dry Film Thickness All products must be applied in line with detailed advice pr ovided by For optimum performance of cargo hold coatings, close contr ol of International Paint on can (container labels), Pr oduct (Technical) Data dry film thickness is essential. Over application may r esult in slow Sheets and Material Safety Data Sheets. cure and solvent entrapment, whereas under application can lead to...

Open the catalog to page 5

Stripe Coats KEY AREAS FOR STRIPE COAT APPLICATION IN CARGO HOLDS Stripe coating is an essential part of good painting practice in cargo holds. Typical areas where stripe coats should be applied include: • backs of stiffeners • cut outs i.e. scallops, etc Welded areas on Hatch Coamings Welded areas of Frame Feet and Bracket Toes All welded areas on Bulkhead Corrugations • welds • areas of difficult access (corners etc) • ladders and hand rails • areas of properly prepared pitting Welds between Hopper Sloping Plate and Tank Top In general, stripe coats should be applied by brush or r oller...

Open the catalog to page 6

Repairs These procedures are recommended for the repair of damages either at the initial coating stage or during cargo hold maintenance. The procedure recommended will depend upon the type and extent of r epair involved. Major Repairs Where major repairs are required, work should be carried out in accor dance with all the previous sections. Successful completion of cargo hold refurbishment on typical Panamax bulk carrier. Minor Repairs These are repairs to areas damaged, either at the initial coating stage, (e.g. caused by destaging) or caused during the in service period (e.g. cargo...

Open the catalog to page 7

November 2004 International Paint Ltd is part of Akzo Nobel, the Netherlands based company serving customers thr oughout the world with healthcare products, coatings and chemicals. Consolidated sales for 2003 totalled EUR 13 billion. Akzo Nobel currently employs approximately 64,300 people in more than 80 countries. Argentina Australia Bahrain Belgium Brazil Bulgaria Canada Chile Colombia Croatia Cuba Cyprus Denmark Ecuador Egypt Estonia Fiji Finland France Germany Greece Hong Kong Iceland India Indonesia Iran Italy Japan Kuwait Latvia Lithuania Luxembourg Malaysia Malta Mexico Netherlands...

Open the catalog to page 8