CoatingsPro Magazine

NOV 2015

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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Recoating and relining the Massapequa Water District's potable water tank had many layers for Alpine Painting & Sandblasting Contractors. There w e r e e le c t r o n i c s a t o p t h e t a n k , n e i g h b o r h o o d s n e a r b y, a n d c o ld weather, to name a few. Feature 56 NOVEMBER 2015 COATINGSPROMAG.COM BY JACK INNIS, CONTRIBUTING EDITOR PHOTOS COURTESY ALPINE PAINTING & SANDBLASTING CONTRACTORS Long Island Water Tank: Beauty Only Skin Deep I t's not often owners of a 182-foot-tall (55.5 m), 75-foot diameter (22.9 m), elevated water tank tell their coatings contractor to tone down the color. In much of the country, highly visible water tanks are emblazoned with colorful town logos, murals, and paint schemes punchy enough to make a beauty queen blush! While decorated tanks are in vogue elsewhere, they are not well sufered in suburban Long Island, N.Y. So when it came time to recoat this 48-year-old landmark, the Massapequa Water District (MWD) essentially told N. J.-based Alpine Painting & Sandblasting Contractors, "Paint it any color you want, as long as it's light blue." Inherent Beauty It wasn't as though A lpine had time to thumb through paint swatches anyway! Project Manager David Ofsharick had a notebook full of concerns on this 41,000-square-foot (3,810.4 m²) project. On the surface, everything looked straightforward. Abrasive blast and spray-apply a Tnemec coating system to approximately 35,000 square feet (3,252.7 m²) of the tank 's exterior, legs, and dry riser. Te crew would also blast and spray-coat the interior of the tank 's 10-foot diameter (3.1 m) dry riser, which totaled approximately 6,000 square feet (557.5 m²). Since the tank 's exterior coating system contained lead, MWD decided to exercise an abundance of caution and drain the tank during this project to avoid even the most remote chance of water contami- nation. However, this led to a scheduling problem. MWD services more than 13,000 residential and commercial customers by delivering up to two billion gallons (7.5 billion L) of water per year. Since the water district has only four million gallons (15.1 million L) of water storage capacity, this one million gallon (3.8 million L) elevated multi-leg tank represented one quarter of MWD's total capacity. Te only way MWD could sacrifce that STEEL EPOXY TANK

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