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The life of corrosion protection coating systems very often will not meet the design life of the steel structures they are supposed to protect. Decisions about corrosion protection coating selection are usually focusing on the costs for the initial application, ignoring the certain future maintenance costs. However, repeated maintenance operations, and resulting downtime, can add significantly to the total cost of ownership.
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Provides requirements to: (1) Identify structures at risk for below-grade corrosion; (2) Inspect (3) Categorize (4) Prioritize (5) Identify next steps. Limited to steel transmission towers, poles, and substation structures.
Quality Assurance/Quality Control (QA/QC), often referred to as inspection, is critical to the success of a protective coating or lining project. Several parties can and do get involved in inspection including the owner, specifier, third party inspector, general contractor, painting contractor, equipment supplier, and coating manufacturer.
This paper describes the polyaspartics coating technology and how it can be used to formulate relatively fast drying 2-coat corrosion resistant paints for use on steel substrates. The polyaspartics coating technology offers several advantages over the conventional two- and three-coat paints, including faster re-coat windows leading to an overall faster coating application process and lower costs.
Standard procedures for coating test panel selection, surface preparation, coating application, field exposure sites and conditions, and the grading and evaluation of coating test panels. Historical Document 1998
In restoration cleaning of historic masonry, you usually know based on contaminants and building fabric what kind of cleaner will be effective on a dirty building. You’ll use one type of restoration cleaner for atmospheric staining, and another for biological soiling. You’ll have an idea, going in, what kind of restoration cleaner to at least try. Not having that kind of information, in my experience, is what makes paint removal from historic – or just old – masonry the most challenging branch of restoration cleaning.
Quality Assurance (QA) paint testing is an important obligation of any paint manufacturer and/or end user. Each year, hundreds of batches slotted to be applied on US Army Corps of Engineers (USACE) hydraulic steel structures around the country are submitted to be tested at the Engineering Research Development Center, Construction Engineering Research Laboratory, Paint Technology Center (ERDC-CERL-PTC). A significant fraction of those samples fail.
This paper discusses the use of Master Painter Institute (MPI) paint standards and systems to select and procure paints for the protection and beautification of commercial buildings. Background on MPI and an explanation of how to use its paint standards is provided, along with instructions for using MPI manuals to choose coating systems for building environments.
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.
NEPCOAT stands for the Northeast Protective Coating Committee and is comprised of tenmember Departments of Transportation, from Connecticut, Delaware, Massachusetts, Maine,New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, and Vermont. NEPCOATwas founded in 1992 and has for thirty years evaluated and qualified paint systems for use onbridges, both for shop-applied new steel, and field-applied totally cleaned existing steel.
Over recent years there have been interesting developments in the way marine coatings and linings are specified that have unwittingly resulted in a situation that can make it challenging to meet a paint specification as currently written.
The selection and use of protective coatings. Corrosion prevention through the use of protective coatings. Chemical terms have been reduced. Activities of industrial and commercial painting projects. 3rd edition 2016 NACE E-Book