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Mold and mildew growth within Navy ships is a significant issue across the fleet. To investigate this issue the Environmental Security Technology Certification Program (ESTCP) and the Strategic EnvironmentalResearch and Development Program (SERDP) funded an investigation into the prevalence of mold in the fleet, with the end goal of developing solutions to remediate and prevent future mold growth. Thusfar, mold and coating data was collected from 26 ships across 6 geographic locations. These mold samples have been analyzed to determine the most common species and highlight those that are toxigenic.
Mold and mildew within Navy ships is a significant issue across the fleet. In 2021 a program was initiated to characterize the extent of the issues and develop mold remediation and preventative processes and technologies. This paper will review the findings of ship inspections performed to determine the extent of mold issues across the Navy and present data on the development and testing of Navy interior coatings with fungistatic additives. In this effort, 26 ships were inspected and sampled across 6 naval bases. The ship inspections determined the most common ship spaces for mold growth, recorded environmental contributors to growth, and non-destructively tested coating characteristics of mold affected ship areas. Additionally, mold samples were taken for laboratory DNA analysis. The findings of the DNA analysis will be presented including common mold genera and species, differences between geographic locations,and the presence of molds that can be considered respiratory hazards. Using this data, the team is working alongside industry partners to develop fungistatic additives for common Navy interior coatings. Fungal inhibition testing of the new coating is ongoing with additional testing to be performed in the future. Additionally, ship demonstrations of the new technology are planned for completion in 2023.
Construction companies will experience a crisis at some point during its existence.This is especially true for construction companies, where it is not a matter of “if” one will happen but “when” it will happen. A crisis is the sudden occurrence of any unplanned or unexpected event that causes harm to the project /company, employees, or the public. The crisis could be a medical/safety emergency, a natural disaster, or personnel crisis dealing with unethical or illegal activities.Construction companies must always operate with a “better safe than sorry” mindset. A proactive way to do so is to ensure that there is a crisis management plan in place.
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The use of duplex coating systems (hot dip galvanizing or thermal spray coating with one or more liquid-applied coatings) for long term protection of structural steel is becoming more mainstream in many industries. This paper describes the advantages of employing duplex coating systems as well as some important considerations for designers prior to specifying their use. It also highlights an ongoing initiative to help agencies more efficiently and effectively use duplex coatings on steel bridges by developing guidelines, standards, and other materials.
Since the 1980s, fluoropolymer resin technologies have offered the possibility of a quantum improvement in topcoat decorative properties- gloss and color retention- compared to conventional acrylic and polyester resins. Specifiers of both protective and architectural restoration coatings systems have expressed a need for a new SSPC standard for field-applied fluoropolymer topcoats, particularly for bright and saturated colors.