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Maximizing water tank service life using a design-build approach / Dan Zienty in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 5 (05/2014)
[article]
Titre : Maximizing water tank service life using a design-build approach Type de document : texte imprimé Auteurs : Dan Zienty, Auteur Année de publication : 2014 Article en page(s) : p. 42-50 Langues : Américain (ame) Catégories : Applications extérieures
Châteaux d'eau
Conception technique
Entretien et réparations
Evaluation visuelle
Qualité -- Contrôle
Réservoirs (récipients) -- Conception et construction
Réservoirs (récipients) -- revêtements protecteurs
Revêtements intérieurs:Peinture intérieureIndex. décimale : 667.9 Revêtements et enduits Résumé : They say there is more than one way to skin a cat. That same analogy holds true when considering the maintenance of a water tower. There are numerous approaches including direct selection, traditional design-bid-build, and design-build. Each approach holds merit, and before making the selection, an owner should carefully weigh the advantages and disadvantages of each. Some of these advantages and disadvantages are discussed in a previous article, "Old Tanks, Small Towns, Tight Budgets" (JPCL, May 2005).
The sole purpose of selecting from any of the above approaches is simple: to maximize the service life of the water tower's applied coating system. Selecting an approach may be easier when the scope of work is based on the complete reconditioning or restoration of the facility. The contractor begins with a clean slate, and it is easy to identify where the responsibility lies should there be a premature failure. However, often times this approach is just not possible, and what may be referred to as aggressive maintenance is warranted at the system's approximate half-life.
In 2006, SEH embarked on the design-build method of delivery for water storage tanks, and partnered with a Midwestern contractor. One of the first projects in the program was a 300,000-gallon water spheroid in the City of Eagle River, Wisconsin (referred to from this point forward as "the City.") The tank was last painted in 1991, making the existing coating system 15 years old. The first step prior to developing the project proposal, was conducting a com-prehensive inspection of tank surfaces in accordance with AWWA D101, including interior immersion, interior dry (access tube, riser, and base), and accessible exterior areas. Tank appurtenances were also evaluated for compliance with current AWWA and OSHA requirements.
This article will review the design-build approach to developing and executing a maintenance plan to maximize the tank's coating system service life even beyond the recommended 15 to 20 years.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21643
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Code-barres Cote Support Localisation Section Disponibilité 16322 - Périodique Bibliothèque principale Documentaires Disponible Penn Avenue Water Tower reconditioning / Dan Zienty in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 5 (05/2017)
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Titre : Penn Avenue Water Tower reconditioning Type de document : texte imprimé Auteurs : Dan Zienty, Auteur Année de publication : 2017 Article en page(s) : p. 38-44 Langues : Américain (ame) Catégories : Entretien et réparations
Gestion de projets
Logistique (organisation)
Réservoirs (récipients)Index. décimale : 648 Travaux d'entretien Résumé : As a central source of water distribution, emergency services and communications transmission, the Penn Avenue tower represents a focal point for the City of Richfield, Minnesota. The 1.5-million-gallon water tower is a multi-column elevated style tank located in a residential and commercial business area on property shared with the City’s No. 2 Fire Station. An engineering evaluation identified the need for complete replacement and maintenance repair of exterior and interior coating systems, along with accessory modifications. The size and scope of the project was complex, as was maintaining City operations and telecommunication services for the duration of the project. Its successful completion would hinge on understanding the needs of each of the stakeholders and implementing an overall plan that would take these needs into consideration, along with the constraints of meeting the required project timeline. En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6066 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29083
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Code-barres Cote Support Localisation Section Disponibilité 19010 - Périodique Bibliothèque principale Documentaires Disponible Performance or preference / Dan Zienty in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 5 (05/2013)
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Titre : Performance or preference : City of Anoka water tank reconditioning revisited Type de document : texte imprimé Auteurs : Dan Zienty, Auteur ; Elliott Hendrickson, Auteur Année de publication : 2013 Article en page(s) : p. 22-32 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces multicouches
Entretien et réparations
Epoxydes
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Primaire (revêtement)
Réservoirs (récipients) -- revêtements protecteurs
ZincIndex. décimale : 667.9 Revêtements et enduits Résumé : In 2003, the City of Anoka, MN, completed the reconditioning of its 400,000-gallon legged water storage tank. A two-year warranty inspection followed in 2005. The project was reported in the May 2007 issue of the JPCL.1 The significance of the project, as highlighted in the May 2007 article, was that the tank provided the opportunity to test and compare the perfor
mance of three coating systems for reconditioning interior surfaces in immersion and above the high water line (the vapor area), an area that is always difficult to protect. Systems tested included two NSF-approved, AVVWA standard multi-coat systems (AVVWA ICS No. 1, a two-coat epoxy polyamide and AVVWA ICS No. 5, a moisture-cured [MCUI zinc primer/epoxy polyamide/epoxy polyamide), and a single-coat (untopcoated) MCU zinc coating recently approved by NSF but not an AWWA standard system. The 2005 inspection, as reported in the May 2007 JPCL, showed that all three systems were performing well.
In 2009, the City contracted again with an engineer for a periodic inspection of the tank, including the interior surfaces. The results of the evaluation led to planning between the City and its engineer for the completion of maintenance repairs scheduled for the summer of 2011. In the end, surfaces primed with the MCU organic zinc performed best. This article summarizes the original project and 2005 warranty inspection results, then focuses on subsequent inspection, repair, and performance of the interior linings tested above the high water line.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19140
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Code-barres Cote Support Localisation Section Disponibilité 15229 - Périodique Bibliothèque principale Documentaires Disponible