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Standards Used for ‘Partial’ Coating Removal During Maintenance Painting

Common methods of maintenance painting have either involved complete removal of existing paint (e.g., SSPC-SP 10, Near White Blast Cleaning) or highly localized preparation of corroding areas using power or hand tools (e.g., SSPC-SP 2 or SSPC-SP 3). Sometimes projects may be designed to an intermediate level where the intent is to reduce the surface preparation level of effort by allowing “good” coatings to remain. In these cases, abrasive blasting or ultra-high pressure water jetting may be used to prepare the entire surface, but well adhered aged coating is allowed to remain.

Product Number: 41216-944-SG
Author: J. Peter Ault, Eric Shoyer
Publication Date: 2016
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Common methods of maintenance painting have either involved complete removal of existing paint (e.g., SSPC-SP 10, Near White Blast Cleaning) or highly localized preparation of corroding areas using power or hand tools (e.g., SSPC-SP 2 or SSPC-SP 3). Sometimes projects may be designed to an intermediate level where the intent is to reduce the surface preparation level of effort by allowing “good” coatings to remain. In these cases, abrasive blasting or ultra-high pressure water jetting may be used to prepare the entire surface, but well adhered aged coating is allowed to remain. There are a number of standards which can be used to describe such work including SSPC-SP 14, SSPC-SP 7, SSPC-WJ 3 and SSPC-WJ 4. The paper will review these standards and discuss common issues associated with their use.

Common methods of maintenance painting have either involved complete removal of existing paint (e.g., SSPC-SP 10, Near White Blast Cleaning) or highly localized preparation of corroding areas using power or hand tools (e.g., SSPC-SP 2 or SSPC-SP 3). Sometimes projects may be designed to an intermediate level where the intent is to reduce the surface preparation level of effort by allowing “good” coatings to remain. In these cases, abrasive blasting or ultra-high pressure water jetting may be used to prepare the entire surface, but well adhered aged coating is allowed to remain. There are a number of standards which can be used to describe such work including SSPC-SP 14, SSPC-SP 7, SSPC-WJ 3 and SSPC-WJ 4. The paper will review these standards and discuss common issues associated with their use.

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