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The National Shipbuilding Research Program (NSRP) is an industry-led, Navy-sponsored collaboration of U.S. shipyards working together to reduce the cost of building, operating and repairing Navy ships by improving productivity and quality through advanced technology and processes. In 2014 the NSRP Surface Preparation & Coatings Panel obtained approval from the Executive Control Board for funding of a project that would evaluate the latest in digital coating inspection instruments and their potential for cost savings in the inspection of Navy vessels.
NACE/SSPC Joint Surface Preparation Standards Package.
SSPC-SP 5/NACE No. 1-2006, White Metal Blast Cleaning
SSPC-SP 10/NACE No. 2-2006, Near-White Metal Blast Cleaning
SSPC-SP 6/NACE No. 3-2006, Commercial Blast Cleaning
SSPC-SP 7/NACE No. 4-2006, Brush-Off Blast Cleaning
SSPC-SP 13/NACE No. 6-2018, Surface Preparation of Concrete
SSPC-SP 14/NACE No. 8-2006, Industrial Blast Cleaning
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.
Review of relevant solids deposition models available in literature, including the model proposed in NACE SP0208-20081 and presents results from Computational Fluid Dynamics (CFD) simulations for heavy and light oil in straight and bent pipelines.
According NACE21414 and ISO18086 standards AC corrosion risks on pipelines requires knowledge on the AC and CP current density on a coating defect or coupon. The induced voltage is mainly a result of the pipeline coating properties, connections to grounded structures (anode beds, other pipelines, AC grounding systems, etc.) and the powerline characteristics (AC load, phase arrangement, tower configuration, etc.). A proper mitigation design engineering study should include all these variables.
Erosion is defined by NACE International as “The progressive loss of material from a solid surface resulting from mechanical interaction between that surface and a fluid, a multicomponent fluid, or solid particles carried with the fluid.”
This SP provides guidance on internal erosion and erosion-corrosion management. Guidance is given for erosion and erosion-corrosion threat assessment/prediction, barrier selection, monitoring, inspection, risk assessment and data management. This SP covers mainly sand caused erosion. However, the guidance in this document can be used for other solid particles.
This SP is applicable to tubular products, e.g., tubing, pipelines, flowlines, risers, valves, and piping systems.