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Equifinality: Specifying Performance

The authors look toward the future of specifying coating projects starting with the traditional prescriptive, means-and-methods, coating formula-based specifications. The popular qualified product list (QPL) approach is presented along with its drawbacks. The design/build (DB) ideal and limitations of specifying only performance is presented. 

Product Number: 41216-963-SG
Author: Troy Fraebel, Tony Ippoliti
Publication Date: 2016
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The authors look toward the future of specifying coating projects starting with the traditional prescriptive, means-and-methods, coating formula-based specifications. The popular qualified product list (QPL) approach is presented along with its drawbacks. The design/build (DB) ideal and limitations of specifying only performance is presented. The balanced equifinality principal is demonstrated in multiple areas including material selection, surface preparation, application, and inspection using real world examples from the water and wastewater, oil and gas pipeline, bridge, and food and beverage industries. Newer technologies including wet-abrasive / vapor blast cleaning, one and two-coat systems, and optically activated pigments (OAP) are included. The criticality of contractor work and inspection plans is stressed. Finally, the complication of considering period inspection and maintenance in the long term life cycle performance equation is also explored.

The authors look toward the future of specifying coating projects starting with the traditional prescriptive, means-and-methods, coating formula-based specifications. The popular qualified product list (QPL) approach is presented along with its drawbacks. The design/build (DB) ideal and limitations of specifying only performance is presented. The balanced equifinality principal is demonstrated in multiple areas including material selection, surface preparation, application, and inspection using real world examples from the water and wastewater, oil and gas pipeline, bridge, and food and beverage industries. Newer technologies including wet-abrasive / vapor blast cleaning, one and two-coat systems, and optically activated pigments (OAP) are included. The criticality of contractor work and inspection plans is stressed. Finally, the complication of considering period inspection and maintenance in the long term life cycle performance equation is also explored.

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