Secondary Containment Basins

Secondary containment basins (IRD) are molded in virgin high density crosslink or FDA-compliant linear polyethylene. These meet or exceed EPA requirements for containment of dangerous chemicals.

Why buy this tank style over another?

Secondary containment basins or tanks have a tapered design for nesting during shipping. These meet or exceed EPA requirements for containment of dangerous chemicals.

— Capacity for up to 11,000 gallons
— Largest rectangular containment in chemical industry
— ASTM D-1998 standards for liquid storage
— Has multitude of accessories to fit any specific needs

Common Use

Secondary containment tanks are used to prevent releases of chemicals to the environment. Trust Assmann double wall tanks to maintain the most rigorous safety standards!

Rectangular Secondary Containment Basin Specifications

CAD Capacity
(US Gallons)
Dimensions (in) Contains Tank Max. Diameter (in)
Lgth Wdth Hgt
IRD40 CAD 5232262020
IRD80 CAD 9547322024
IRD140 CAD 15552382429
IRD185 CAD 18564521641
IRD200 CAD 20057.5452435
IRD240 CAD 24060432835
IRD275 CAD 27564.5522442
IRD330 CAD 33072433135
IRD375 CAD 37566662458
IRD385 CAD 38591631951
IRD440 CAD 44072603054
IRD495 CAD 49569692961
IRD660 CAD 66083644048
IRD950 CAD 95083834668
IRD1650 CAD 165099995384
IRD1750 CAD 1750218108212 each 90
IRD3500 CAD 3500218108402 each 90

Cylindrical Secondary Containment Basin Specifications

CAD Capacity
(US Gals)
Dimensions (in) Contains Tank Max. Diameter (in)
Dia Cut Hgt
IRD1050 Up to 12007258 to 7264
IRD1100 Up to 982860 to 4082
IRD1850 Up to 1760960 to 5892
IRD2900 Up to 39009675 to 9192
IRD3000 Up to 2881900 to 10786
IRD4100 Up to 39001190 to 84115
IRD5200 Up to 48001050 to 133101
IRD550 Up to 690600 to 5848
IRD8000 Up to 78001430 to 116139
IRD150A 982 to 13018640 to 5382
IRD1550 1200 to 18007272 to 10864
IRD2000 1301 to 18918653 to 7782
IRD2400 1760 to 22779658 to 7592
IRD2300 1800 to 230072108 to 13564
IRD2500 1891 to 24068677 to 9882
IRD4200 2672 to 42009691 to 14092
IRD4000 2881 to 387790107 to 14486
IRD5500 3900 to 540011984 to 116115
IRD5600 4200 to 5300105140 to 17792
IRD6500 4800 to 6200105133 to 172101
IRD6510 5400 to 6100119116 to 131115
IRD10000 7800 to 9900143116 to 147139
IRD12000 9900 to 11000143147 to 163139


Curious about Assmann storage solutions? Listed below are the most common questions about our Secondary Containment solutions. If you have additional questions, contact our experts.

What is the standard for Secondary Containment basins?

Often, containment basins are sized for 110% of the primary tank’s capacity. Assmann’s basins are designed for a 120% capacity, so we generally have more than enough capacity to meet the requirement standards for secondary containment.

Can Secondary Containment be used as an open top storage tank?

No, secondary containment basins are not designed to be used as primary tanks. These open top rectangular basins will bulge or fail without a supporting frame.

Related Accessories

Preserve the life and efficiency of your tank with accessories customized to your specific tank.

Flange Fittings

Flange fittings for polyethylene bulk containers provide a means to connect inlet or drainage plumbing through the tank wall.

Bulkhead Fittings

Bulkhead fittings for plastic tanks are economical tank to plumbing connections available in a variety of materials.

Ready to bring Assmann products to your line of work?

Request a quote now.