Tank Systems Blog
Engineering, specification, and standards articles. Written for the people who actually buy, install, and maintain industrial storage tanks.
How Polyethylene Storage Tanks Are Made: Rotational Molding, Resin Selection, and Wall-Thickness Engineering
Polyethylene tanks are made one at a time by rotationally molding a measured charge of resin powder inside a heated steel mold. The result is a seamless one-piece vessel with no glue lines, no welded seams, and no field assembly. Here is exactly how that works — and why the choices a manufacturer makes about resin, mold, and wall thickness drive the difference between a tank that lasts 25 years and one that fails in five.
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Polyethylene vs. Fiberglass vs. Steel: Choosing the Right Material for Chemical Storage
Polyethylene, fiberglass, and steel each have a service envelope they're unbeatable in — and an envelope where they're a bad choice. The right tank for your application isn't the cheapest one or the one your last project used; it's the one whose chemical, temperature, capacity, and code constraints actually match your service. Here is how to decide.
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FDA, NSF, and ASTM D1998: What Tank Certifications Actually Mean for Buyers
Tank quotes are full of acronyms — NSF, FDA, ASTM, AWWA, UL — and the right ones can make or break a project. A water utility buying a tank that isn't NSF 61 listed will fail a state health inspection. A food processor buying a tank that isn't FDA-compliant resin loses an audit. Here is a plain-English guide to what each certification covers and when it actually matters.
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Sizing a Fire-Protection Water Tank: NFPA 22 Capacity, Drawdown, and Setbacks
A fire-protection water tank is sized by one calculation: the design fire-flow demand multiplied by the required duration. NFPA 22 codifies it. But the capacity number is just the start — the tank also has to deliver effective water (above the drawdown level), survive freezing climates, sit far enough from buildings, and stay accessible for the AHJ. Here is how all of that fits together.
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