Integrated Firestop Solution for Energy Storage — Designing Energy Storage Systems to Meet International Standards

Energy Storage Firestopping Integration Solution — Building an International-Standard Fire Barrier for Energy Storage Systems

Energy Storage Firestopping Integration Solution — Building an International-Standard Fire Barrier for Energy Storage Systems

In high-risk sites such as lithium battery energy storage systems (BESS), firestopping is a key measure to prevent fire spread and ensure safe operation. According to the latest FM standard FM 5-33, there are clear and strict design and construction requirements for firestopping at cable penetrations inside energy storage facilities.

FM 5-33 — Why choose firestopping?

FM 5-33 is one of the authoritative standards for the design of batteries, cables, ventilation, and fire control systems within energy storage spaces, with key points including

• The firestopping system must be FM-approved products

All openings for cables, ducts, busways, etc., penetrating fire walls and floors must use FM Approved firestopping systems.

• Fire-resistance rating must match the wall

Firestopping between the energy storage area and control rooms/fire compartments must achieve hour fire-resistance rating, effectively blocking fire spread and delaying smoke diffusion.

• Airtightness (L-Rating) control

FM sets clear requirements for the airtightness of cable firestopping to ensure that smoke in the early stages of a fire does not infiltrate battery or control equipment spaces, protecting the operation of critical equipment.

Our solution

1. FM-certified firestopping products (FM Approvals) We provide fully certified through-wall firestop systems, paired with professional installation to ensure the overall FM 5-33 structure meets requirements.

2. FM 4991-certified installation team Shanghai Tengxi Construction Engineering Co., Ltd. is an FM 4991-certified firestopping contractor, possessing professional technical capability and a construction management system, and can provide

• On-site firestop assessment and design
• Proper installation of firestop materials
• Full-process quality records and acceptance reports

3. Suitable for high-risk energy storage scenarios

• Lithium battery energy storage areas
• (BMS) · Battery Management System room (PCS) · Power Conversion System room
• Control rooms and UPS rooms

Your fire-compliance partner FM Approved fire safety is not just a product, but a system solution. Choosing an FM Approved firestopping system + an FM 4991 firestopping contractor certified installation team means choosing international standards, safety traceability, and third-party verified fire protection.