Norwesco 600 Gallon Plastic Containment Tray

What a containment tray is for

Secondary containment is the backstop under a stored liquid. If a fitting weeps, a valve is left open or a tank splits, the tray holds the liquid instead of the floor, the drain or the ground. Fire marshals, environmental rules and insurers commonly ask for containment sized to a share of the largest container standing in it; the rule that applies to you comes from your local authority. What this tray gives you to work with is 600 gallons of capacity in a 98 by 84 inch footprint. Measure the base of the tank or the group of drums against the inside of the tray, not the outside, because the wall and the radius at the floor take some of that outline. Norwesco's drawing for the tray is linked under Technical Drawing on this page and gives the inside dimensions. To work out what volume you are containing in the first place, the tank sizing calculator and the tank sizing guide are the place to start.

Black polyethylene handles water, most fertilizers and many common chemicals, keeps light off whatever collects in the tray, and does not rust or need coating the way a steel pan does. A liquid that has been caught also has to be removed: plan how you will pump or drain the tray after a spill, because 600 gallons of water weighs 5004 lb and the tray cannot be tipped.

What to check before you buy

1. The footprint. 98 by 84 inches outside. Confirm the inside dimensions on the drawing against the base of what you are standing in it, and leave room to walk around.
2. The height. 20 inches. The tank or drums have to be lifted over that lip to go in, so plan the forklift or the ramp now. A tank filled while standing in the tray never has to come out.
3. The capacity. 600 gallons. Your authority sets what share of the stored volume the containment must hold; if 600 is short, the 1300 gallon tray below is the next step.
4. The floor. Flat, level and continuous. A tray on a slope spills over its low edge before it reaches its rated volume.
5. The liquid. Check it against polyethylene and keep it under 120 F and 1.5 specific gravity.

Sizes nearby

One size down is the 500 gallon containment tray, part 42051. The next size up is a big step: the 1300 gallon containment tray in black, part 42195. Each page carries its own footprint.

Shipping and receiving

The tray ships LTL under NMFC 156600-02 from the nearer of Norwesco's Fairfield, Texas and Shawnee, Oklahoma plants, 98 by 84 by 20 inches and 144 lb. The listed price is before freight; the freight cost estimator gives the lane cost to your ZIP. If you are buying a tank to stand in it, put both on the same order so they travel together. At the tailgate, check the part number against 43069, look along the lip and the corners for transit damage, and set the tray in its final spot before the tank goes in; a tray with a full tank in it does not move.

Questions before you order? Call 866-418-1777.