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To achieve adequate protection of assets, use of a protective coating is one of predominant methods used in the oil and gas industry. There are several factors contribute in the coating service life, including surface preparation, coating application, coating material and environmental conditions. It is well known in the coating industry that 70% of the coating failures are attributed to improper surface preparation.
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联合表面处理标准 商业级喷砂清理 Requirements for "Commercial" - one of five levels of cleanliness of steel surfaces achieved by blast cleaning with the use of abrasives. (White Metal, Near-White Metal, Commercial, Industrial, Brush Off)
The use of coatings in service environments where soluble salt contamination of the substrate is suspected. Detection, removal, and testing. Cost-to-benefit ratio.
This standard, SSPC-SP 10 (WAB)/NACE WAB-2, defines the "Near-White Metal" level of surface cleanliness for wet abrasive methods. Other levels in overview below.
This paper introduces the available technology of chemical coating removal as an alternative to mechanical coating removal by comparing and contrasting the advantages and disadvantages of each chemical coating removal technology. Due to the high cost and environmental drawbacks of mechanical methods of coating removal, chemical coating removal systems have advanced as a cost effective and environmentally friendly way to remove coatings that are highly cost effective on a per square foot basis cost comparison. The presentation will discuss all chemical coating removal technology, features and benefits.
This summary is a look at implementable work and a gage of the value of future work. The strategic implementation of Surface Preparation and Coatings Automation, Standardization and Digitization of Visual Inspection, and Surface Preparation and Coatings Training Certification Program could provide cost and schedule savings. Optimizing Power Tool Surface Preparation potentially will increase Shipbuilders safety, while reducing material and labor costs.
Coating performance and longevity is highly dependent on the quality of substrate surface preparation. The effect of profile height, profile type (e.g., type of tool used to perform the prep, angularity of profile, etc.), extent of cleanliness, and amount of chloride contamination on coating performance were all studied to determine the correlation between these factors in an attempt to identify the primary factor in coating failure due to improper surface preparation.
Requirements for "Brush-Off" - one of five levels of cleanliness of steel surfaces achieved by blast cleaning with the use of abrasives. (White Metal, Near-White Metal, Commercial, Industrial, Brush Off)
Field pH testing on vertical concrete prior to application of high-performance protective linings is primarily required to confirm the removal of deleterious substances following surface preparation. This paper explores the use of various in situ testing techniques for measuring surface pH on vertical concrete.
Requirements for "Near-White Metal" - one of four levels of cleanliness of steel surfaces achieved by blast cleaning with the use of abrasives. (White Metal, Near-White Metal, Commercial, Brush Off) Historical Document 1994