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BESS - Battery Energy Storage System

Battery Energy Storage Systems (BESS) are a cornerstone of the energy transition. As storage capacities increase, so does the importance of safety.

Even modern LFP batteries can enter a state of thermal runaway in the case of a severe failure. This results in a rapid release of flammable gases, and the formation of an explosive atmosphere, a sharp pressure increase.

A subsequent deflagration may cause:

  • Destructive overpressure inside the container
  • Damage to equipment and structural components
  • Secondary flame propagation
  • Extensive operational downtime
  • Risk to personnel
  • Reputational and financial losses

The risk is real. The solution must be systematic.

Thermal runaway without protection

BESS battery energy storage

Off-gassing due to cell malfunction

Complete destruction of the container and equipment

INTEGRATED EXPLOSION PROTECTION SYSTEM:

Complete, customized explosion protection solution. For demanding projects, we provide a fully integrated system including:

  • Vent PRO deflagration panels
  • Flammable gas detectors
  • Controlled degassing system BESS Vent
  • Control system
  • Design in accordance with applicable standards
  • Engineering based on battery parameters and container geometry


Explosion venting BESS VENT + VENT PRO

Thermal runaway with explosion protection

BENEFITS FOR MANUFACTURERS AND INVESTORS:

Our solution is not only about compliance, it is about long-term project stability:

  • Reduced insurance premiums through demonstrable risk control
  • Faster restart after an incident
  • Minimization of secondary damage
  • Increased confidence of investors and insurers
  • Support for long-term operational stability

ADDITIONAL SERVICES:

  • Risk assessment study
  • Project consulting
  • Technical calculations
  • Support in negotiations with investors and insurance companies
  • Arrangement of explosion testing

CONTROLLED DEGASSING - BESS VENT

  • Controlled ventilation of gases generated during thermal runaway
  • Reduces flammable gas concentration
  • Helps prevent secondary explosion events
  • Compatible with detection systems

PRIMARY VENTING - VENT PRO

  • Controlled explosion venting with 100% activation reliability
  • Adjustable opening pressure
  • Long service life
  • Tested under real-life explosion scenarios

DIRECTED DEFLAGRATION - DIVEX

  • Controlled redirection of deflagration pressure wave and flame front into a designated safe area
  • Reduces required safety distances through targeted vent discharge control
  • Enables optimized site layout and improved spatial efficiency

CERTIFIED COMPLIANCE & PROVEN PERFORMANCE

  • EN 14797 compliant
  • ATEX 2014/34/EU certified
  • Designed in accordance with NFPA 68 and NFPA 69
  • Project support aligned with NFPA 855
  • Based on UL 9540A, CFD simulations and experimental testing with real explosions
  • IP-rated protection
  • Validated through full-scale explosion testing under various operating conditions

ENVIRONMENTAL PROTECTION

  • Insulated deflagration panel design
  • Resistant to snow and ice formation
  • Resistant to abrasion, mechanical stress, and weather exposure
  • Stainless steel accessories

ACCESSORIES

EXPLOSION VENTING VENT PRO F: On the top of the battery energy storage EXPLOSION VENTING BESS VENT + VENT PRO F: On the top of the battery energy storage EXPLOSION VENTING VENT PRO F: On the side of the battery energy storage EXPLOSION VENTING VENT PRO F + DIVEX: On the side of the battery energy storage EXPLOSION VENTING BESS VENT + VENT PRO F + DIVEX: On the side of the battery energy storage ACTIVATION OF BESS VENT VENTILATION SYSTEM: Immediate reduction of explosive gas concentration