Snyder Industries 8700 Gallon ASTM XLPE Black Double Wall Tank

Where a warm bulk tank is allowed to stand

Where this vessel ends up standing is the first question, and a warm duty narrows it. Inside a bay that already runs hot under a steel roof, on a hard standing beside a process building, or on a pad inside an existing containment area that has no room left for another bund, the reason for choosing a tank with a second wall moulded into it is that nothing has to be built around it. It arrives as one item, on one footprint, ready to stand where the process wants it. That footprint is a 142 inch square carrying 72,558 pounds of plain water, or 137,860 pounds at the published 1.9 rating, under 197 inches of shell. There is no version of that load that an existing yard surface should be assumed to take. Specify the slab, cure it, and have it waiting flat, continuous and level across the entire square, with nothing shimmed under an edge and no old patch carrying a corner. If the position is inside a building, the clear height is the constraint that decides everything else: over sixteen feet of tank plus whatever a platform and a fill arrangement need above the manway. Measure it at the final position rather than off a drawing. The warm duty adds one more siting question that most people ask too late. A wall works hardest at the vapour line rather than under the liquid, so a tank standing where the headspace gets hot wants its inspection routine designed at the same time as its pipework; the wall thickness at the vapour saturated headspace guide explains why looking from the liquid side misses the part that matters. Then settle the volume honestly: check your consumption and drop quantity in the tank sizing calculator and take the freeboard rules from the tank sizing guide, because a warm or gassing product does not give you the nameplate figure.

One shell, two ratings, two service limits

Two figures separate this part number from the three that share its shell, and they do not split the group the same way. On weight and rating this tank sits with 1006400N51 at 5,800 pounds and a specific gravity rating of 1.9, carrying 137,860 pounds of maximum contents, while the two lighter rows are listed at 5,000 pounds against a lower rating on their own sheets. On service limit it sits instead with 1006400N46: this sheet reads 140 F / 60 C where the other pair reads lower. So this is the listing to order when the product is both dense and warm, and that combination is the only argument for it that is actually written down. The material field reads crosslinked linear polyethylene, which is what the sheet says and as far as this page will go; a resin word is not a compatibility statement and no sheet in the group explains what separates the codes. Tell us the product, the strength and the working temperature and we will point at the part number. The two outside rows are the size question, and this family makes it clean. 5670000N30 puts 6,500 gallons on a 120 inch square at 199 inches, trading capacity for a smaller plan at very nearly the same height. 1006600N30 puts 10,000 gallons on this identical 142 inch square at 226 inches, so the step up is bought purely in height and the pad you are already pouring does not change. Work that against the clear height at the final position and against how often you want a truck on site.

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One opening, and the field that names it

• The outlet field: it reads "1 Manway / Lid" and the inlet field is empty. That is the name of an opening and not a pipe size, so no outlet dimension, thread, bulkhead, flange or valve is published on this sheet and none is claimed on this page. Give us the line size, the valve type and the pump arrangement and we will confirm what this part number carries before anything is ordered.
• The opening itself: an 18 inch threaded vented manway, and the only one the sheet publishes. Fill, inspection and cleaning all share it, so the drop pipe, the level arrangement and the rinse method want deciding before the tank is set rather than after the first fill.
• The vent: the manway is listed as vented. On a tank rated to 140 F / 60 C the vent works harder than on a cold one, because a warm headspace moves more air for the same change in level. Keep the path clear, inspect it every time the manway is opened, and never restrict it.
• Hot service: if the product runs anywhere near the published limit, say so when you order. Gasket material, valve seats and any flexible connection are chosen against temperature as well as chemistry, and that is the usual cause of a weep on an otherwise sound tank.
• Access: the manway is at 197 inches, so a fixed ladder or platform and a fall protection arrangement belong in the installation drawing, with the fill coupling brought down to working level wherever the delivery permits.
• Structure: the sheet lists 8 lifting lugs, ladder lugs and one flange line, and publishes nothing else in the way of fittings.
• The space between the walls: no monitoring port, gauge or alarm is published, so that arrangement is specified separately and inspected to a written schedule.
• Limits: 140 F / 60 C, a specific gravity rating of 1.9, and a 3 Year Warranty.

Say what is going in it and how warm it runs at order time, and every wetted part gets specified once against the real duty instead of twice against a catalogue default.

Warm process storage at bulk volume

The higher limit on this sheet is what puts this part number on a shortlist, so the duties follow it: clean-in-place and sanitising chemical make-up at food, beverage and dairy plants, warm process and rinse chemistry in manufacturing, boiler house and cooling water treatment storage, metal finishing at plant scale, and any bulk holding where the product arrives warm or is made up warm and the floor underneath still has to stay clean. At 8,700 gallons the site is taking deliveries by hose rather than handling totes with a forklift, and the second wall is what makes doing that indoors, or on a surface that drains somewhere, a planned decision rather than a risk somebody absorbs. Two references belong with the order. The usable volume of a contained tank is not its nameplate figure, which the Captor double wall freeboard sizing guide works through properly, and it matters more on warm duty than on cold. Where the reason for the enquiry is private fire water storage instead, that is a different design problem on different rules and the fire water reservoir design guide for rural and remote sites is where to take it; nothing on this page is a claim about that duty. Build the inspection habit in the first week and write down what you saw and when, because the only thing a second barrier gives you over a single wall is the evidence that nothing has left the first one.

A wide load on the Nebraska lane

The sheet gives one plant, Lincoln, Nebraska, and one ship-from state, Nebraska. Freight is LTL at class 250 with no NMFC number, and the load is 142 by 142 by 197 inches at 5,800 pounds. Price your own lane with the freight cost estimator; the listed price is before freight. No crane, rigging arrangement, permit or escort detail appears anywhere on this sheet, so none is stated here; what the sheet does give is the size and the weight, and those are enough to plan around. A load close to twelve feet across does not take a route by accident: walk it first, check the gate frames, the overhead services and the turning circle at the receiving end, and confirm the offloading equipment has the reach as well as the capacity. Lift under the base, never by the manway, and keep it upright. Set it plumb on the cured, level surface in its final position, check it in two directions while it is empty and confirm the full 142 inch footprint is bearing before a pipe is connected. Fill it with clean water, hold the 72,558 pound load, and read the manway seal, the base line and the pad under load in that order. Drain it, let it dry, open the space between the walls and record the first inspection on the shell with the date and the part number. On a black shell, mark your working full level and your stop level in paint while the water is still in it, because from that day forward nobody is going to read the level through the wall. Keep the first delivery's paperwork with the tank; the product and strength written down on day one is the baseline every batch after gets compared against. Check the strap tension a week after the first fill; a tank settles a little, and the strap that was tight is loose.