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Lead Contractor Letter of Approval Application LPF-2ci for Commercial and Industrial Lead Removal
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The topic of lead is as relevant today as it has ever been.
This presentation will outline the results and conclusions of a number of years of testing and experience in surface preparation for high-performance coatings. Testing has shown that there are a number of important surface preparation variables that are not routinely monitored and controlled on coating projects. These variables will be identified and guidance will be provided on appropriate treatment to achieve coating results.
The Cool Roof Rating Council (CRRC) is a non-profit organization, which maintains a rating program for roofing materials. The CRRC also addresses many current technical and regulatory issues involving cool roofs and continues to provide an independent third-party ratings system in an arena that is continually evolving. The CRRC/RCMA (Roof Coatings Manufacturers Association) substrate study, initiated in 2008, is an example of an investigation designed to address an important technical issue. This study aims to evaluate the influence of roof substrates on reflectance and emittance properties of cool-roof coatings, in the field over a three-year period.
This paper will discuss what is the NSRP, what did the SP-3 Panel accomplish last year and what does the Panel have planned for 2009.
This paper addresses two recent regulatory actions regarding lead. The first is the October 15, 2008 revision to the National Ambient Air Quality Standards for Lead. The second regulation is the August 14, 2008 update to the OSHA Instruction: National Emphasis Program – Lead, which describes OSHA’s nation-wide emphasis on reducing occupational lead exposures. The authors will overview the regulatory actions and discuss potential impacts on the painting industry.
This paper introduces a novel method for chemical surface preparation of concrete surfaces that has been recognized by ASTM under a recent revision of ASTM D4260. Contractors will learn current methods used to prepare concrete in order to receive coatings. The objectives of the presentation are: to understand the current methods for surface preparation of concrete, to identify the current standard for chemically etching concrete and the new materials that have been developed that meet the revised standard, and to present the environmental advantages of the new product in a real world project example.
Vinyl coatings technology was pioneered shortly after World War II to control the corrosion on steel dam gates along the Mississippi River. Previously, oil-based technology had resulted in paints that performed well on atmospheric exposed areas of the dams but failed quickly in the areas immersed in water. By the mid-1950s, their proven durability had made vinyl coatings the industry standard for marine applications.
Fluoropolymer resins find widespread use as building blocks for ultra-weatherable coatings. Fluoroethylene vinyl ether (FEVE) resins were developed to overcome some of the problems associated with the application of standard fluoropolymer coatings. FEVE resins, which yield topcoats with expected lifetimes exceeding 60 years, can be cured at ambient temperatures for field application, or at elevated temperatures in the shop. In order to allow coating manufacturers to conform to government regulations on solvents, water-based FEVE resins were developed several years ago.
Self-healing polymers are a new class of smart materials, which have the capability to autonomically repair themselves after damage, without the need for detection or repair by manual intervention. To expand the scope of practical applications, new self-healing chemistries have been developed and evaluated for use in a wide variety of applications including coatings.
Graffiti resistant polyurethanes have been developed that do not contain surface energy modifiers such as fluorine or silicone compounds. These coatings are made from a two-component polyurethane that includes polyacrylate polyols and water dispersible polyisocyanates. The use of two components allows one to make highly crosslinked polymers with minimal organic co-solvent.
This paper describes key technical attributes of an innovative high ratio calcium sulfonate alkyd (HR CSA) overcoat system, and how they allowed for the successful overcoating of a lead-based alkyd paint system on a penstock exterior at a Canadian hydroelectric facility, utilizing only 5,000 psi pressure washing for surface preparation. The case history provided outlines how the coating system also lent itself well in helping to solve different crevice corrosion issues.