Snyder Industries 8700 Gallon HDLPE Double Wall Liquid Storage Tank - Sulfuric Acid Resin

Sulfuric acid resin in the title, and 15.87 pounds per gallon on the rating line

The family is four part numbers in one shell, and this is the one whose title names the resin for sulfuric acid service. All four are 142 inches by 142 inches by 197 inches. This one is listed at 6,000 pounds empty; 1006400N46 and 1006400N49 are listed at 5,000 pounds, and 1006400N48 at 5,800. The sheet gives all four and explains none, and no wall figure is published for any of them, so nothing on this page should be read as a wall comparison. What is published, and what matters, is the rating line, and it is more explicit on this sheet than on most: a specific gravity of 1.9, stated as a maximum of 15.87 pounds per gallon. That is the number to hand your process engineer, because it is the figure a dense liquid actually has to be checked against, and 8700 gallons is the scale at which getting it wrong is not recoverable. Against it, the sheet gives 137,860 pounds as the maximum contents where 8700 gallons of water is 72,558 pounds. The other reason to choose this part number over the black tanks beside it is the shell colour, and it is a duller reason but a real one: a white shell is the only one anybody reads anything through, and on a contained tank the outer shell is all you can see. Where it stands, the numbers get serious. A 142 inch base carrying 72,558 pounds of water, or up to 137,860 pounds of contents at the rating, is a foundation job rather than a slab job, and the fact that a rotationally molded floor bears only on what it touches does not change with size, it just gets more expensive to get wrong. Flat, level, continuous, cured, poured wider than the tank, and surveyed before the tank arrives. The vapour space at the top of a shell this tall deserves attention of its own, because that is where a chemical tank is worked hardest and inspected least, and the reasoning behind it is set out in the wall thickness at the vapour-saturated headspace guide. Run 8700 gallons against your delivery size and your turnover in the tank sizing calculator, and take the reserve and the freeboard from the tank sizing guide.

One 142 inch shell at four weights, with a 6500 and a 10000 beside it

Two rows show what the next decision up and the next decision down actually cost. Down: the 6500 gallon 5670000N30 stands on a 120 inch base and is 199 inches tall at 5,300 pounds, which is narrower than this tank and two inches taller, so dropping capacity here buys pad width and buys no headroom at all. That is not the trade most buyers expect, and it is worth knowing before a foundation is designed around the smaller tank. Up: the 10000 gallon 1006600N30 keeps this exact 142 inch base and goes to 226 inches at 7,400 pounds, which is the clean way to grow, because the foundation, the walking room and the base detail are the same and only the height and the access change. If there is any chance the duty grows, that row is the one to design the pad for now. Inside the 8700 gallon group, the decision is the resin named in the title and the colour of the shell, and it is made with the liquid in front of us rather than from a weight column. Every one of these tanks carries the same single 18 inch manway, the same service limit and the same warranty, and not one of them publishes a containment volume, an annulus dimension or an inner tank dimension, so if a containment figure has to appear on a permit or a set of drawings, ask us and we will get it from Snyder in writing rather than calculate one for you. What a contained installation is obliged to do at site level is worked through in the Captor double wall compliance walkthrough.

Need a different size? Every tank in the table is in stock programs; ask for a quote on the one that fits, or call 866-418-1777.

The vapour space at the top of a tank sixteen feet high

• The vent comes first and it is doing more work here than on any tank in this family. The sheet gives one opening, an 18 inch threaded vented manway, and that vent is the only breathing path published. Unloading a tanker into 8700 gallons of tank pushes that volume of air out through it; drawing the tank down pulls it back. On a shell 197 inches tall a blocked vent is a structural event, not an inconvenience. Keep it clear, inspect it by name, never cap it.
• Then the headspace itself, which on this tank is the subject rather than a footnote. Vapour saturates the space above the liquid line, and that is the zone where premature problems start and where liquid-side inspection never looks; the reasoning and the sizing logic behind it are in the wall thickness guide linked in the section above, and the expansion room a warming liquid needs is set out in the freeboard sizing guide. Do not fill to the manway on a tank this tall.
• Access: an 18 inch manway sixteen feet up is a fixed platform, a caged ladder and a fall protection plan, designed in before the tank is set rather than added after somebody has to get up there. It is the only route into the inner tank and every internal inspection goes through it.
• Outlet and inlet: the sheet publishes neither for this tank, so this page claims neither. Fitting sizes, types and elevations are confirmed with us at order against Snyder's current documentation, before a penetration exists.
• Service limit and warranty: 120 F / 48 C and a 3 year warranty as the sheet gives them. On a shell this tall the liquid stratifies in summer and the top of it runs warmest; the limit applies to all of it.
• Rating: a specific gravity of 1.9, printed on this sheet as a maximum of 15.87 pounds per gallon, with 137,860 pounds as the maximum contents against 72,558 pounds of water. Those are the figures for the sign-off and there is nothing beyond them.

At this scale the discipline is simple to state and expensive to skip: nothing loads the shell. Every pipe, valve, gauge, alarm, ladder and shade structure stands on its own steel, and the first joint at the tank is flexible so thermal movement, pump vibration and a settling foundation never arrive at the wall. The containment space is not a service void: no conduit, no penetrations, no standing rainwater, no storage. Keep the whole circumference of a twelve foot shell walkable and lit, because a tank built in on two sides is a tank whose containment has not been looked at since commissioning. And write the containment inspection into the plant's routine with a name against it, because on an 8700 gallon tank that space is the only early warning system that costs nothing to run.

Plant-scale acid storage with the containment built into the purchase

Eight thousand seven hundred gallons is plant infrastructure. A tank this size is not bought to hold a working supply, it is bought so that deliveries happen on a sensible cycle and the process never waits: bulk storage feeding a dosing or treatment system at a large water or wastewater plant; primary chemical storage at a mining, minerals or metals processing site; a mill tank at a pulp, paper or board plant; bulk supply at a plating, anodising or surface treatment works; a terminal or blending operation holding one product in one tank on a bunded pad; industrial and power station water treatment. The reason to buy the containment with the tank rather than pour it is arithmetic that gets more favourable as the tank gets bigger: a berm sized for 8700 gallons is a structure with its own drawings, its own inspections, its own coatings and its own maintenance budget, and the double wall shell arrives with all of that already answered at the tank boundary. What it does not answer is the site plan, which is where the compliance walkthrough above earns its keep. Two limits, once each. No containment volume, annulus dimension or inner tank dimension is published on this sheet, so this page states none; we will get it in writing from Snyder if your permit needs the number. And the service limit is 120 F / 48 C for the liquid and for the tank. Beyond those, every failure mode at this scale is a foundation, a fitting or a procedure, and none of them is the polyethylene.

Six thousand pounds empty and a 197 inch shipment

This tank is molded at Lincoln, Nebraska and the sheet gives class OVS on NMFC 156600, shipping at 197 inches long by 142 inches wide by 142 inches high at 6,000 pounds. Every one of those numbers is an oversize number: twelve feet of width on a trailer, sixteen feet of shell, three tons of empty tank. That makes the delivery a project step with its own plan, not a line on an order. The freight cost estimator prices the lane to your ZIP, and the listed price is before freight. Talk to us early about the route and the lift: gate and yard width, overhead lines and limbs, the turning circle, the ground the truck and the crane will stand on, and the equipment and rigging that will take 6,000 pounds off a trailer and stand it upright on a foundation. Have the foundation poured, cured, surveyed and signed off before the truck is booked, with the anchor detail in place, because a tank of this diameter cannot be shuffled after it is set. Inspect the entire outer shell, the base ring and the manway with the rigging crew while it is horizontal; that is the only close look anybody will get at the bottom of it. Then commission it standing: fill the inner tank with clean water, hold it, survey the foundation for settlement, and walk the containment space with a torch before a single gallon of product is ordered. On a tank this size the hour spent watching a water fill is the cheapest hour in the entire capital budget. Keep the first delivery's paperwork with the tank; strength and date on day one is the baseline for every batch after.