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HISTORICAL DOCUMENT. Requirements for expert application of coatings to the interiors of steel hopper rail cars. Inspection of coatings and testing by instruments. Facilities, equipment, personnel. Plastic, food, and chemical industries.
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This AMPP standard practice provides guidelines for qualifying personnel as abrasive blasters and coating and lining applicators in the rail industry. The intent of this standard is to foster personal growth of the individuals and technical continuity in the areas of surface preparation and coating and lining of railcar equipment. This standard outlines a formal system of training and qualification that recognizes the knowledge, skill, and technical competency of the individuals engaged in this work.
This standard is intended for use by employers, managers, and others in the rail industry who have a need for such guidelines in their efforts to provide suitable training and qualification of their abrasive blasters and coating and lining applicators to comply with regulations, meet customer requirements, and enhance the effectiveness of their operations.
When protective coatings are to be applied to structures, it is important that the surface is clean and dry if premature failure of the coating is to be prevented and the full coating service life achieved. In many situations for both new build and repair of structures, blast cleaning of the surface is required to remove contamination and to create an anchor pattern to enhance the adhesion of the coating system to the substrate.
While traditional cleaning solutions can be time consuming, costly and ineffective, dry ice blast cleaning provides a completely dry solution that cleans faster and more efficiently, while reducing downtime and supporting environmental initiatives. This presentation will discuss the basic concepts of dry ice cleaning. Participants will learn the benefits of the process, as well as, how it can benefit their production, improve quality, and support an environmentally responsible production environment.
The paper chronicles and discusses the challenges, options, choices and solutions from the design phase through the actual blast cleaning and painting of one of the most unique steel structures in the world, the largest radio telescope at Arecibo, Puerto Rico.
This paper will offer general guidance regarding preservation by liquid applied coatings to the owners and operators of coastal and inland working vessels. The paper will discuss both new construction and maintenance painting and will offer suggested coating systems for the main areas of these vessels.
Steel surfaces are frequently cleaned by abrasive impact prior to the application of protective coatings. The resultant surface profile, sometimes called an anchor pattern, is comprised of a complex pattern of peaks and valleys, which must be accurately assessed to ensure compliance with job or contract specifications.
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)
HISTORICAL DOCUMENT. Requirements for "Near-White Metal" - 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)
This standard defines the process for preparing a carbon steel surface to the near-white metal degree of surface cleanliness using a dry abrasive blast method of cleaning. It is intended for use by coating or lining specifiers, applicators, inspectors, or others whose responsibility is to specify a standard degree of surface cleanliness for carbon steel surfaces to be achieved by dry abrasive blast cleaning. or to prepare or inspect carbon steel to conform to defined requirements.
The primary functions of blast cleaning before coating are
a) to remove material from the surface that can cause early failure of the coating, and
b) to obtain a suitable surface profile (roughness) to enhance the adhesion of the new coating system.
The six degrees of dry abrasive blast cleaning of carbon steel surfaces are:
Degree of Surface Cleanliness
Designation
White Metal Blast Cleaning
SSPC-SP5/NACE No. 1
Near-White Metal Blast Cleaning
SSPC-SP10/NACE No. 2
Commercial Blast Cleaning
SSPC-SP6/NACE No. 3
Industrial Blast Cleaning
SSPC-SP14/NACE No. 8
Brush-Off Blast Cleaning
SSPC-SP7/NACE No. 4
Thorough Spot and Sweep Blast Cleaning for Industrial Coating Maintenance
SSPC-SP18
Requirements for "Industrial" - 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)
Requirements for "White Metal" - 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)