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Partial Blast of Ultra High Solids Coatings on Navy Ships

The NSRP Surface Preparation and Coatings panel sponsored a project to reduce the extent of abrasive blasting to remove aged, ultra-high solids coatings from tanks and other spaces on Navy ships. This “partial blast” process allows a percentage of remaining serviceable Ultra High Solids (UHS) to remain. After surface preparation, a single coat application of UHS coating is applied to all surfaces. 

Product Number: 51217-024-SG
Author: J. Peter Ault
Publication Date: 2017
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The NSRP Surface Preparation and Coatings panel sponsored a project to reduce the extent of abrasive blasting to remove aged, ultra-high solids coatings from tanks and other spaces on Navy ships. This “partial blast” process allows a percentage of remaining serviceable Ultra High Solids (UHS) to remain. After surface preparation, a single coat application of UHS coating is applied to all surfaces. During this project, partial blast surface preparation of ultra-high solids epoxy coatings was observed on two projects. Consistent cost savings has been demonstrated in both demonstrations. The work has shown that partial blast can be effectively performed at a reduced cost. Cost savings result from a reduction in abrasive blasting time and fewer clean-up-inspect rework iterations. Though there is limited data and demonstrations to-date, there have not been any signs of catastrophic impacts to service life; further service time, field observations, and testing will help to build confidence that the alternative process reduces cost at an acceptable performance risk.

The NSRP Surface Preparation and Coatings panel sponsored a project to reduce the extent of abrasive blasting to remove aged, ultra-high solids coatings from tanks and other spaces on Navy ships. This “partial blast” process allows a percentage of remaining serviceable Ultra High Solids (UHS) to remain. After surface preparation, a single coat application of UHS coating is applied to all surfaces. During this project, partial blast surface preparation of ultra-high solids epoxy coatings was observed on two projects. Consistent cost savings has been demonstrated in both demonstrations. The work has shown that partial blast can be effectively performed at a reduced cost. Cost savings result from a reduction in abrasive blasting time and fewer clean-up-inspect rework iterations. Though there is limited data and demonstrations to-date, there have not been any signs of catastrophic impacts to service life; further service time, field observations, and testing will help to build confidence that the alternative process reduces cost at an acceptable performance risk.

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