The threat
Lithium-ion thermal runaway can release flammable gas inside an enclosure. NFPA 855 requires explosion control for stationary energy storage above certain capacity thresholds12, and the 2026 edition requires NFPA 69 explosion prevention, where earlier editions allowed NFPA 68 deflagration venting as an option13.
How polyurea helps
Be clear with owners: a coating does not satisfy NFPA 855 explosion control. What polyurea can add is a tough, seamless skin on container walls, barrier walls and adjacent buildings that resists impact and helps retain fragments, plus long-term corrosion and weather protection for steel enclosures in the field.
Where it goes
- Steel container exteriors and interiors
- Barrier and separation walls
- Adjacent equipment and control buildings
- Battery room walls in buildings
- OEM line application at fabricators
Details that matter
- Work inside the integrator's fire protection design. Never coat over vents, relief panels or detection hardware.
- Confirm fire performance requirements for any interior coating with the engineer and the AHJ.
- Container builders can run polyurea on the line, which makes for steady, repeatable production work.
Who buys the work
BESS integrators, EPC contractors, utilities, container fabricators and commercial building owners adding storage.
These are the customers an ArmorThane blast mitigation applicator sells to. See the business path.
Blast protection is an engineered system. Coatings complement standoff, glazing and structural design, and the engineer of record sets the design.