Secondary Containment

Southern Tank provides reliable steel secondary containment tanks for chemical, petroleum, and liquid storage. Whether you need F921 double wall, Flameshield, Fireguard, or UL 142 single wall tanks with F911 basins, our solutions meet SPCC compliance (112.7(c) & 112.8(c)(2)).

Dual Wall Containment Tanks

Preferred for clean, relocatable storage, our dual wall tanks feature:

• UL 142 inner & outer tanks for built-in containment
• No need for 110% external basins—outer wrap blocks precipitation
• Leak detection via 2″ monitoring pipe (NFPA 30 compliant)
• Available in horizontal, vertical, and rectangular designs
• Type I (tight wrap) and Type II (spaced wrap) options

Fire-Protected Options

• Fireguard: UL 2085-rated, insulated, 2-hour fire protection
• Flameshield: Cost-effective fire-resistant containment

Both meet fire code requirements and can be custom-built to your specs.

F911 Containment Dikes

For added protection, Southern Tank offers:

• F911 dikes with UL 142 tanks or standalone units
• Tertiary containment for spills and overfills
• Custom pump shelves and platforms available

Contact us today for custom containment solutions built to last.