Hey everyone, thanks for stopping by—if you’re here, you’re probably either researching liquefaction storage equipment for your next project or already deep in the weeds of trying to figure out where the heck to put this stuff (trust me, I’ve heard the stress from every client I’ve worked with over the last 12 years). I’m not some stuffy engineer in a lab coat hiding behind technical jargon; I’m a liquefaction storage equipment supplier, and every day I help factories, energy firms, and transport operators work through the space puzzle. Let’s break this down like we’re grabbing coffee, no fancy charts or confusing acronyms without explaining them first. Liquefaction Storage Equipment
First off, let’s get one thing straight: there’s no one-size-fits-all number for space. A unit for storing liquefied natural gas (LNG) at a small remote well site is way different than the 10-million-gig tank we supplied for a coastal import terminal last year. But that’s exactly why I’m here—to walk you through the key space factors that actually matter, not the generic stuff you’ll find on Wikipedia. Let’s start with the big, obvious thing: the size of the equipment itself. Sounds simple, right? But you’d be shocked how many folks I talk to only measure the tank and forget all the extra parts.
Take our most popular standard LNG storage tanks, the ones we call “Model X for small to mid-scale projects” (think 50,000 to 500,000 gallons capacity). The tank itself is usually around 20 feet tall and 15 feet wide, right? But here’s the catch: you need clearance all around it for maintenance. Our techs need to get a cherry picker up to replace the pressure relief valves on top, which means at least 3 feet of space above the tank. Then on the sides, we need 4 feet minimum for access to the piping—those pipes carry the liquefied gas in and out, and if there’s a leak, our team can’t get to them if you’ve stacked pallets of parts right next to the tank. And don’t forget the base: the tank needs to sit on a reinforced concrete foundation, which is usually 1 to 2 feet wider than the tank itself to spread the weight. So a 15-foot-wide tank isn’t just 15 feet of floor space—add the foundation, and that’s 17 to 19 feet wide, plus that extra vertical clearance. For the bigger industrial units, like the ones we built for a chemical plant last year (2 million gallons), we’re talking tanks 40 feet tall and 30 feet wide, with 10 feet of vertical clearance and 8 feet of side access. That’s not just “make room for a big tank”—that’s an entire pad that’s like 50 feet by 60 feet just for the tank and its immediate service area.
Next up, the liquefaction part itself—wait, liquefaction isn’t just the tank holding the stuff, right? Oh man, that’s the mistake everyone makes. The storage unit is only part of the system. You have the liquefaction skid, which is the set of machines that cool the gas down to its liquid state (LNG is -260°F, for reference—super cold, so you need special gear). Those skids aren’t tiny; a small skid is about 20 feet long, 10 feet wide, and 12 feet tall, and the big ones for large-scale sites are twice that size. But again, clearance around them is non-negotiable. You need space to route the inlet gas pipe from whatever’s producing the raw gas (well head, refinery, etc.) to the skid, and the outlet pipe from the skid to the storage tank. Also, the skid has motors and compressors that need airflow—if you box the skid in on all sides, it’ll overheat and break down way faster. We always tell clients to add 6 feet of space on all sides of the liquefaction skid for ventilation and piping. Oh, and don’t forget the control room—you can’t run a system like this from your phone (well, technically you can now, but you still need a physical space for the main control panel, emergency shutoff systems, and a place for your ops team to sit if something goes wrong). For small projects, that’s a 10×10-foot prefab shed; for big sites, it’s a 20×30-foot permanent structure.
Then there’s the safety zone. This is where things get really specific, and if you mess this up, you’re not just wasting space—you’re breaking local codes. I can’t tell you how many times we’ve had clients in Texas or Louisiana (two big LNG hubs here in the US) come to us saying “we have this empty lot, can we put the tank here?” and we have to say “wait, that’s only 25 feet from the warehouse, that’s way too close.” Every region has setback requirements, which are the minimum distance between the storage equipment and any buildings, property lines, roads, or water sources. For LNG, most US states require a minimum of 50 feet from public roads, 100 feet from occupied buildings (like offices, warehouses, or homes), and 200 feet from water bodies if the liquefied gas can spill into them. That doesn’t mean you just draw a 50-foot line around the tank—you have to measure from the edge of the tank to the edge of the nearest structure or property line. So if your property line is only 60 feet away from where you want to put the tank, that’s a no-go, even if the tank itself is small. For our big industrial LNG tanks, those setbacks can be 500 feet or more—so you need to account for that entire safety zone when planning, not just the area where the tank sits.
Wait, what about other space needs? Oh right, utility connections. You need power for the liquefaction skid, control systems, and cooling units. That means a transformer pad, which is usually 10×10 feet, and access for utility trucks to get to it. If you’re using water for cooling (which most operations do), you need space for a water pump and holding tank too—another 15×15 foot spot at least. And let’s not forget about loading and unloading areas, especially if you’re moving the liquefied gas around by truck or rail. A single LNG truck is about 40 feet long, so you need a loading bay that’s at least 50 feet long (to turn the truck around) and 20 feet wide, plus space for the piping connections at the bay. For rail, it’s even bigger—each rail car is 60 feet long, so you need a 100-foot long loading track with clear space on both sides.
Let me give you a real example to make this concrete. Last year, we worked with a small independent gas producer in Wyoming that wanted a mid-scale LNG storage setup for their remote well site. Their total space needs ended up being 120 feet long by 80 feet wide. Here’s how that breaks down: 1) The liquefaction skid (20×10 feet) with 6 feet clearance all around: that’s 32×22 feet. 2) The 200,000-gallon storage tank (15×20 feet) with foundation and clearance: 25×30 feet. 3) The control shed (10×10 feet) plus access: 15×15 feet. 4) Safety setback: 50 feet from their nearest building, 50 feet from the well head inlet line, so that takes up 50 feet along one side of the pad. 5) Loading area for their small service truck: 50×20 feet. Add all that up, and that’s exactly the 120×80 footprint they needed. They originally thought it would fit in a 60×60 lot—yikes, that would’ve been a disaster.
Now, what about space for maintenance and future growth? A lot of clients only plan for today’s needs, but they forget that in 5 years, they might need to expand their storage capacity. If you cram the equipment too tight now, you’ll have to move the whole setup to add a bigger tank, which is a huge pain and costs way more money. We always recommend leaving at least 20% extra space around the entire setup for future upgrades. For that Wyoming client, we suggested leaving a 20-foot strip of empty space along one side of the pad, so if they want to add another storage tank in a couple years, they don’t have to tear up piping or move the control shed.
Wait, let’s talk about common mistakes I see all the time. First, not accounting for vertical space. The liquefaction skid and tank are tall—if you have overhead power lines or a low roof on a nearby warehouse, that’s a problem. Our techs had a site in Ohio last year where they put a 30-foot tall tank 100 feet from a warehouse, only to realize the warehouse’s roof was 25 feet high. We had to go back and adjust the foundation height to lower the tank, which added a week to the project. Second, ignoring underground space. The piping that carries the liquefied gas is usually buried 2 to 3 feet deep, and the foundation for the tank needs to go below the frost line in cold areas (like Wyoming, that’s 4 feet deep). So you can’t put a garden or a parking lot over where the pipes are—you need to mark those underground lines when you dig, which means space for pipe routing that’s not just on the surface. Third, not checking local codes early. A client in Florida tried to put a small LNG tank near a residential neighborhood, and the county wouldn’t approve it because of setback rules. They had to move it 150 feet, which delayed their project by 3 months and cost them extra money. I always tell people to check with their local fire marshal and planning department before they even start measuring—save yourself the headache.
Now, what if you’re dealing with a different type of liquefaction storage, not LNG? Like liquefied hydrogen or CO2? The space factors are similar, but the setback requirements are usually stricter because hydrogen is more flammable and CO2 can be toxic. For hydrogen storage, setbacks are often double what they are for LNG, so you need way more open space. The tank size is also different—liquid hydrogen is stored at -423°F, so the tanks are bigger for the same capacity because they need more insulation. So that’s another thing to keep in mind: the type of liquefied gas you’re storing will change the space needs a lot.
Let’s wrap this up with a quick checklist you can use right now, no matter what project you’re working on. First, calculate the size of your equipment: tank, liquefaction skid, control systems, utility gear. Second, add clearance around each piece—3-10 feet, depending on the size. Third, check local setback requirements: 50-500 feet minimum from buildings, roads, water. Fourth, add space for loading/unloading and future expansion (20% extra). Fifth, don’t forget vertical and underground space for pipes and foundations.
Specialty Gases At the end of the day, I’ve been doing this for long enough to know that space isn’t just about square footage—it’s about planning ahead to avoid costly delays and safety issues. If you’re in the middle of this and not sure what your space requirements are, or you’re ready to start sourcing liquefaction storage equipment for your project, I’m here to help. We work with projects of all sizes, from small remote well sites to big coastal terminals, and we’ve got the experience to walk you through every step of the space planning process so you don’t make the mistakes I see all the time. Just reach out—we can hop on a quick call, go over your site details, and give you a clear breakdown of exactly how much space you need. Don’t let bad space planning derail your project before it even starts.
References
- National Fire Protection Association. (2020). Standard for the Storage and Handling of Liquefied Natural Gas (NFPA 59A). Quincy, MA: National Fire Protection Association.
- U.S. Energy Information Administration. (2022). Mid-Scale LNG Storage and Liquefaction Unit Specifications. Washington, D.C.: U.S. Department of Energy.
- American Petroleum Institute. (2021). Recommended Practice for Design, Installation, and Maintenance of Liquefied Gas Storage Systems (API RP 2000). Washington, D.C.: American Petroleum Institute.
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