Snyder Industries 8700 Gallon ASTM Black Double Wall Tank

The pad under a black column this tall

Start with the ground, because on a tank this size the ground is the project and the tank is the easy part. This shell puts 197 inches of vessel on a 142 inch square, which is close to twelve feet across and over sixteen feet in the air, and the surface underneath has to carry 72,558 pounds of plain water or 137,860 pounds at the published 1.9 rating. That load sits on a footprint you could park a small car on. It wants a designed, cured slab that is flat, continuous and level across the whole 142 inch square, with no rails, no packing at a corner and no patched section taking an edge, and it wants to be finished and cured before the tank is scheduled rather than poured around it afterwards. The second question is where that slab goes. A tank with containment moulded into it is bought to stand where a built bund would otherwise have to be built: inside a containment area that is already at capacity, on a hard standing that drains somewhere you would rather it did not, or on a plant room floor where nobody is going to pour a kerb. That is the honest reason for the second wall, and it is the reason to put this vessel where the process wants it instead of where the civils allow it. Read the level line into the decision early: this shell is black and the only published opening is a manway at 197 inches, so the way somebody reads a level has to be designed with the installation rather than discovered on the first fill. Size it before you pour anything. The volume you can actually use on a contained tank is not the nameplate figure once thermal expansion, chemistry and density are accounted for, so run your own consumption and drop quantity through the tank sizing calculator and take the freeboard discipline from the tank sizing guide. Then leave a walkway all the way round the finished position. The side of a tank nobody can reach is the side nobody ever inspects, and on a vessel holding this much that is not a small omission.

Four 8700s on one 197 inch shell

Four part numbers share this exact 142 by 142 by 197 inch shell and the sheets split them into two empty weights: this tank and 1006400N48 at 5,800 pounds, 1006400N49 and 1006400N46 at 5,000. The reason to order this one rather than its shellmates is the rating line, and it reads 1.9 here, carrying 137,860 pounds of maximum contents against 72,558 pounds of plain water. That is a listing for a product appreciably denser than water at the full 8,700 gallons, and if that is what you are storing there is no sensible substitution among the lighter rows. Its material field reads high density linear polyethylene and its service limit reads 120 F / 48 C; both belong to this part number only, and this page never borrows a twin's figure, because the figure that matters to you is the one printed against the part number you order. What the sheet does not do is explain the codes, so neither does this page. The last two rows are the genuine size decision. 5670000N30 holds 6,500 gallons on a 120 inch square at 199 inches, which is a smaller plan and very slightly more height, so it is the row for a site that is short of floor rather than short of headroom. 1006600N30 holds 10,000 gallons on this identical 142 inch plan at 226 inches, which means the whole step up is bought in height and costs nothing at all on the pad you are already pouring. If the roof line or the canopy will take it, that comparison is worth doing properly, because a larger vessel means fewer truck drops for the same annual usage and usually a better cost per truck drop on the chemical itself.

Pad already poured? Send its size to 866-418-1777 or in a quote request and we will match a row to it, freight to your ZIP included.

The outlet field, and what it does not say

• The outlet: the field reads "1 Manway / Lid" and nothing else, and the inlet field is empty. That names an opening rather than a pipe size, so no outlet dimension, thread, bulkhead, flange or valve is published on this sheet and none is claimed here. Tell us the duty, the product and the line size and we will confirm what this part number carries before pipe is bought or a pump is specified.
• The opening: an 18 inch threaded vented manway is the only opening the sheet publishes. It is the fill route, the inspection route and the cleaning route at once, wide enough to work a lance and to get a real look at the wall, but shared by everything anyone wants to do from the top.
• The vent: the manway is listed as vented, and on a vessel holding 72,558 pounds of water that path is the wall's protection during a fast bulk fill and during a hard pump-down alike. Keep it clear, inspect it whenever the manway is opened, and never blank or restrict it for any reason.
• Reaching it: the manway sits at 197 inches. Access is engineered rather than improvised, with a fixed ladder or platform and a fall protection arrangement designed alongside the tank, and the fill connection brought down to ground level wherever the delivery allows it.
• Structure: the sheet lists 8 lifting lugs, ladder lugs and one flange line on this part number. Those are the fittings it publishes and this page names no others.
• The space between the walls: no monitoring port, gauge or alarm is published. How that space is watched and recorded is specified separately, and at this volume it deserves a written procedure rather than a habit.
• Limits: 120 F / 48 C, a specific gravity rating of 1.9, and a 3 Year Warranty. That is the whole of what this sheet publishes about service.

Name the product and its strength at order time. On a contained vessel the wetted parts are the one route a release can take out of a tank that otherwise has two walls around it.

Heavy product, bulk drop, hard standing

An 8,700 gallon tank rated at 1.9 is bought where the product is dense, the deliveries are bulk and the surface underneath is somewhere a release would be expensive: municipal water and wastewater treatment, power generation and large boiler house chemistry, mining and mineral processing reagent storage, pulp and paper, metal finishing at plant scale, and fertilizer and agricultural chemical distribution. Three pieces of reading are worth the time before the order. The usable volume of a contained tank is not its nameplate figure, which the Captor double wall freeboard sizing guide works through on thermal expansion, chemistry and density. The hardest service a polyethylene wall sees is at the vapour line rather than under the liquid, which is why an inspection from the liquid side misses it; that is the subject of the wall thickness at the vapour saturated headspace guide. And where somebody asks how the space between two walls gets tested, the cathodic disbondment testing guide for double wall interstitial spaces sets out the methodology and where the polyethylene boundary lies; this tank is polyethylene and stands above ground. Where the duty is private fire water rather than chemical storage, that is sized on different rules entirely and the fire water reservoir design guide for rural and remote sites is the honest place to begin. Agree the receiving procedure when you buy the tank rather than on the first delivery: where the driver connects, who watches the fill, and what the stop level is.

Fifty-eight hundred pounds out of Lincoln

Lincoln, Nebraska is the only plant on this sheet and Nebraska the only ship-from state, which puts the plains and the Midwest on a short lane and makes everything else a scheduled movement. The sheet gives the ship mode as LTL at class 250 with no NMFC number, and the load as 142 by 142 by 197 inches at 5,800 pounds. Price the lane to your own ZIP with the freight cost estimator; the listed price is before freight. The sheet publishes no crane capacity, no rigging arrangement, no permit and no escort requirement, so this page claims none of those; what it does say is that a load close to twelve feet across and over sixteen feet tall wants the route measured before the truck is booked, and the offloading equipment chosen for reach as well as for rating. Gate frames, overhead services, low bridges and the turning room at the far end stop more deliveries than weight ever does. Take it under the base by the arrangement your rigger specifies and never by the manway. Set it plumb on the finished, cured, level surface in its final position and confirm the whole 142 inch footprint is bearing evenly before anything is connected. Then fill it with clean water, hold that 72,558 pound load, and walk the base line, the manway seal and the pad in good light while it is under load. Drain it, let it dry, open the space between the walls, look into it and record the date and the part number on the shell in paint marker. Photograph the base from four sides while it is still clean; that first set of photographs is the baseline every later inspection is compared against, and there is no second chance to take it. Tape a copy of the spec sheet inside the control panel door; the next person to touch the tank will not have the box it came in.