All chemicals stored in polyethylene tanks require some form of venting in order to keep them safely stored. However, in some cases, the harmful fumes emitted from the chemicals cannot be released directly into the atmosphere. Fuming chemicals require special considerations to reduce harmful vapors before they are evacuated. There are many important things to consider when managing harmful chemical fumes and controlling air pollution.
Topics: Venting
Pneumatically-filled tanks must be properly vented to avoid offloading pressures, which increase the tank interior pressure beyond the ASTM-D 1998 regulation allowances. The right manway cover can provide the venting required to avoid this situation, but it can be difficult to know exactly which type to choose.
Topics: Venting
There may be some common misconceptions about the NSF 61 Certification; however, you can learn to see past them by finding out more about what this certification entails. Companies that manufacture, sell and distribute water treatment products or distribution products in the United States are sometimes required (according to varying state law) to meet this certification, but misconceptions around it leads to frequent mistakes in its implementation and compliance. These mistakes may allow contaminants to migrate or leach into drinking water causing unsafe and unhealthy conditions.
Topics: Value Added
We’ve worked hard at Poly Processing to provide a comprehensive website that addresses many of your questions about harsh chemical storage. We also provide resources like walkthroughs, downloads and even tools to help you build your chemical storage system or to request a quote. So that you can get everything you need out of this resource we’ve provided, we wanted to provide a walkthrough so that you know that PolyProcessing.com is the resource for all things chemical storage tank-related. Depending on what stage of shopping you’re in, you have different needs, so take a look and learn what our website can do for you.
Topics: Technology Tips
In some chemical storage tank applications, it is necessary to install a ladder to allow for inspection, to check gauges, and to service level sensors or mixers. But what ladder options are available, and which ones are best for the chemical you’re storing?
Topics: Fittings and Accessories
If you’re storing an oxidizing chemical like sulfuric acid or sodium hypochlorite in a polyethylene tank, an antioxidant barrier will more than double the life of that tank. Polyethylene, whether it be linear or cross-linked, has excellent chemical compatibility compared to other choices. Linear and cross-linked are both the same polyethylene in terms of chemical composition and compatibility. However, cross-linked (XLPE) has a much higher resistance to tearing because the molecular chains are bonded (or cross-linked) to one another, whereas HDPE is called “linear” because they are not. They also both share the same chemical formula and resistance properties. All polyethylene, like other materials, will eventually degrade given time, and a typical lifespan for tanks storing oxidizing chemicals will be shortened to 6-10 years without a proper resistance barrier.
Topics: Value Added
A chemical storage tank system is a large investment. Just as proper tank maintenance and frequent inspections help ensure that the tank lives out its projected useful life, it is equally important to install the tank properly. Being prepared for the tank delivery, hydro testing the tank, and making sure fittings and flexible connectors are properly installed set your tank system up for successful operation. Here are some common questions we get regarding the installation process.
Topics: Value Added
Tank blanketing is also referred to as tank padding, and it describes the process of applying an inert gas to the vapor space (or unused space) that exists above the chemical inside a storage tank. Tank blanketing is mainly used to add a layer of gas (usually nitrogen) to keep air or moisture from a chemical inside the tank. Since water and oxygen can degrade some chemicals, a nitrogen blanket may help increase the life of that chemical.
Topics: Fittings and Accessories
You’re ready to configure your chemical storage tank system and you know the chemical you’re storing, the size of tank needed and you may even have an idea of the fittings you might require. But what are you missing when you design your chemical storage tank configuration?
Topics: Tank Design and Materials
If you’re new to the chemical tank storage world, it’s likely that you have a lot of questions. Which type of tank is best? What materials are available? What materials are best equipped to handle the chemical you need to store? It’s helpful to know what is standard in the marketplace, the best options for your chemical, and what enhancements might be available to make your chemical storage selection easier.
Topics: Tank Design and Materials
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