On January 1, 2023, NSF will implement lower extractable limits for certain components in NSF/ANSI/CAN Std. 61/600. This paper will discuss the impact that the change to the extractable limits in NSF Standard 61 will have on facility owners, contractors and specifying engineers. By now, most in the water industry have heard about the new lower extractable limits will take effect on January 1, 2023; but there is significant uncertainty among tank owners and specifying engineers as to how this new standard will impact the coating of water tanks in the near term and future. This paper will analyze how these changes will impact current technology and legacy tank coatings and discuss the use of ultrahigh solids coating technology to comply with these standards. While this paper will address the technological impacts of this standard, it will also address the practical considerations related to tank owners and specifiers. This paper will clear up confusion and misunderstanding in the tank painting industry regarding the impact of the new NSF 600 standard.

Subject
Costs, Thin films, Coating application, Coatings, Materials, Manufacturing, Solids, Equipment, Dry film thickness, Potable water, Epoxies, Lining, Coating systems
Keywords:
NSF, National Sanitation Foundation, Water Tanks, Potable Water, Coatings
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2022
The Sherwin-Williams Company
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