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BESSY FIRE PROTECTION
BESSY: The First Name in BESS Fire Protection
Modular fire barriers designed to help limit thermal transfer and minimize separation distance between battery energy storage units as well as adjacent equipment.
Trusted by utilities, EPCs &
engineering teams
/ 5.0
★★★★★
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BESSY FIRE PROTECTION
BESSY: The First Name in BESS Fire Protection
Modular fire barriers designed to help limit thermal transfer and minimize separation distance between battery energy storage units as well as adjacent equipment.
Trusted by utilities, EPCs &
engineering teams
/ 5.0
★★★★★
/
About BESSY
Fire Protection Designed Specifically for Battery Energy Storage Systems
The rapid expansion of renewable energy has increased the need for reliable fire separation within battery energy storage facilities. A single thermal event can result in equipment loss, extended downtime, and system level disruption.
BESSY is DuraSystems’ engineered fire barrier system developed to help control horizontal thermal spread between adjacent energy storage units. Built on more than thirty five years of fire protection expertise, BESSY provides predictable thermal behavior, structural integrity, and flexible integration into modern energy storage site layouts.
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BESSY Models
BESSY SF
The BESSY SF system provides 6 hours of fire integrity and is engineered for rapid installation, modular configuration, and relocatability. Ideal for spacing between adjacent BESS units and general protection requirements.
SF
BESSY SF
120
BESSY 120
240
BESSY 240
SF
BESSY SF
BESSY SF
The BESSY SF system provides 6 hours of fire integrity and is engineered for rapid installation, modular configuration, and relocatability. Ideal for spacing between adjacent BESS units and general protection requirements.
120
BESSY 120
BESSY 120
A UL/ULC-listed 2-hour non-load-bearing fire barrier with tongue-and-groove connections. Designed for controlled thermal performance and secure separation between BESS units and equipment.
240
BESSY 240
BESSY 240
Our highest-rated system, offering 4-hour UL/ULC fire protection for demanding, high-risk installations. Built for extended thermal exposure and robust perimeter defense.
SF
BESSY SF
BESSY SF
The BESSY SF system provides 6 hours of fire integrity and is engineered for rapid installation, modular configuration, and relocatability. Ideal for spacing between adjacent BESS units and general protection requirements.
120
BESSY 120
BESSY 120
A UL/ULC-listed 2-hour non-load-bearing fire barrier with tongue-and-groove connections. Designed for controlled thermal performance and secure separation between BESS units and equipment.
240
BESSY 240
BESSY 240
Our highest-rated system, offering 4-hour UL/ULC fire protection for demanding, high-risk installations. Built for extended thermal exposure and robust perimeter defense.
SF
BESSY SF
BESSY SF
The BESSY SF system provides 6 hours of fire integrity and is engineered for rapid installation, modular configuration, and relocatability. Ideal for spacing between adjacent BESS units and general protection requirements.
120
BESSY 120
BESSY 120
A UL/ULC-listed 2-hour non-load-bearing fire barrier with tongue-and-groove connections. Designed for controlled thermal performance and secure separation between BESS units and equipment.
240
BESSY 240
BESSY 240
Our highest-rated system, offering 4-hour UL/ULC fire protection for demanding, high-risk installations. Built for extended thermal exposure and robust perimeter defense.
SF
BESSY SF
BESSY SF
The BESSY SF system provides 6 hours of fire integrity and is engineered for rapid installation, modular configuration, and relocatability. Ideal for spacing between adjacent BESS units and general protection requirements.
120
BESSY 120
BESSY 120
A UL/ULC-listed 2-hour non-load-bearing fire barrier with tongue-and-groove connections. Designed for controlled thermal performance and secure separation between BESS units and equipment.
240
BESSY 240
BESSY 240
Our highest-rated system, offering 4-hour UL/ULC fire protection for demanding, high-risk installations. Built for extended thermal exposure and robust perimeter defense.
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BESSY Models
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BESSY Models
BESSY SF
The BESSY SF system provides 6 hours of fire integrity and is engineered for rapid installation, modular configuration, and relocatability. Ideal for spacing between adjacent BESS units and general protection requirements.
SF
BESSY SF
120
BESSY 120
240
BESSY 240
BESSY SF
The BESSY SF system provides 6 hours of fire integrity and is engineered for rapid installation, modular configuration, and relocatability. Ideal for spacing between adjacent BESS units and general protection requirements.
SF
BESSY SF
120
BESSY 120
240
BESSY 240
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BESSY Models
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BESSY Models
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ENGINEERING CAPABILITIES
Engineered for dependable performance in real world environments
Certified Performance
Tested and validated for critical fire conditions
BESSY systems undergo recognized fire testing to verify containment performance, thermal stability, and measurable behavior under event conditions.
Certified Performance
Tested and validated for critical fire conditions
BESSY systems undergo recognized fire testing to verify containment performance, thermal stability, and measurable behavior under event conditions.
Certified Performance
Tested and validated for critical fire conditions
BESSY systems undergo recognized fire testing to verify containment performance, thermal stability, and measurable behavior under event conditions.
Engineered Approach
Designed to perform in demanding environments
Each configuration is engineered to withstand outdoor exposure, thermal loading, and structural stresses common to utility and energy storage sites.
Engineered Approach
Designed to perform in demanding environments
Each configuration is engineered to withstand outdoor exposure, thermal loading, and structural stresses common to utility and energy storage sites.
Engineered Approach
Designed to perform in demanding environments
Each configuration is engineered to withstand outdoor exposure, thermal loading, and structural stresses common to utility and energy storage sites.
Long-Term Safety
Built for durable protection over extended service life
BESSY helps reduce site risk, maintain safe equipment separation, and deliver durable protection for battery energy storage projects.
Long-Term Safety
Built for durable protection over extended service life
BESSY helps reduce site risk, maintain safe equipment separation, and deliver durable protection for battery energy storage projects.
Long-Term Safety
Built for durable protection over extended service life
BESSY helps reduce site risk, maintain safe equipment separation, and deliver durable protection for battery energy storage projects.
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What We Offer
Engineering support that ensures accurate system design and integration
/ 001
Site Layout Review
We assist with determining spacing, exposure considerations, and barrier placement to support effective separation and proper system design.
SEPARATION
PLACEMENT
EXPOSURE
CLEARANCES
Site Layout Review
/ 002
System Specification
We provide configuration guidance, panel selections, and technical details needed to include BESSY accurately in drawings and project specifications.
DOCUMENTATION
CONFIGURATION
REQUIREMENTS
COMPLIANCE
System Specification
/ 003
Integration Planning
We support mounting conditions, clearances, anchorage, and interactions with adjacent structures to ensure smooth and accurate system integration.
ANCHORAGE
MOUNTING
INTERFACES
COORDINATION
Integration Planning
/ 004
Technical Documentation
We supply drawings, and submittal packages required for permitting, engineering review, and project approval.
TESTING
DRAWINGS
SUBMITTALS
Technical Documentation
/ 001
Site Layout Review
We assist with determining spacing, exposure considerations, and barrier placement to support effective separation and proper system design.
SEPARATION
PLACEMENT
EXPOSURE
CLEARANCES
Site Layout Review
/ 002
System Specification
We provide configuration guidance, panel selections, and technical details needed to include BESSY accurately in drawings and project specifications.
DOCUMENTATION
CONFIGURATION
REQUIREMENTS
COMPLIANCE
System Specification
/ 003
Integration Planning
We support mounting conditions, clearances, anchorage, and interactions with adjacent structures to ensure smooth and accurate system integration.
ANCHORAGE
MOUNTING
INTERFACES
COORDINATION
Integration Planning
/ 004
Technical Documentation
We supply drawings, and submittal packages required for permitting, engineering review, and project approval.
TESTING
DRAWINGS
SUBMITTALS
Technical Documentation
/ 001
Site Layout Review
We assist with determining spacing, exposure considerations, and barrier placement to support effective separation and proper system design.
SEPARATION
PLACEMENT
EXPOSURE
CLEARANCES
Site Layout Review
/ 002
System Specification
We provide configuration guidance, panel selections, and technical details needed to include BESSY accurately in drawings and project specifications.
DOCUMENTATION
CONFIGURATION
REQUIREMENTS
COMPLIANCE
System Specification
/ 003
Integration Planning
We support mounting conditions, clearances, anchorage, and interactions with adjacent structures to ensure smooth and accurate system integration.
ANCHORAGE
MOUNTING
INTERFACES
COORDINATION
Integration Planning
/ 004
Technical Documentation
We supply drawings, and submittal packages required for permitting, engineering review, and project approval.
TESTING
DRAWINGS
SUBMITTALS
Technical Documentation
/ 001
Site Layout Review
We assist with determining spacing, exposure considerations, and barrier placement to support effective separation and proper system design.
SEPARATION
PLACEMENT
EXPOSURE
CLEARANCES
Site Layout Review
/ 002
System Specification
We provide configuration guidance, panel selections, and technical details needed to include BESSY accurately in drawings and project specifications.
DOCUMENTATION
CONFIGURATION
REQUIREMENTS
COMPLIANCE
System Specification
/ 003
Integration Planning
We support mounting conditions, clearances, anchorage, and interactions with adjacent structures to ensure smooth and accurate system integration.
ANCHORAGE
MOUNTING
INTERFACES
COORDINATION
Integration Planning
/ 004
Technical Documentation
We supply drawings, and submittal packages required for permitting, engineering review, and project approval.
TESTING
DRAWINGS
SUBMITTALS
Technical Documentation
Reliable guidance through every stage of design
Our team provides the technical clarity required to apply the BESSY system correctly. We help engineering teams reduce uncertainty, align with project requirements, and ensure consistent field performance across a range of site conditions.
Guidance for accurate system placement
We assist with evaluating spacing, orientation, and layout requirements to support effective separation and dependable system performance.
Engineering support you can rely on
Our team provides technical review, and project specific recommendations from early planning through installation.
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Start Here
Connect with our team
Provide your project specs and our team
will contact you with next steps.
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Our Method
Engineered for reliability from design through installation
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001
Engineering Evaluation
Engineering Evaluation
We begin by reviewing site layout, available separation distances, and environmental exposures to guide the team in selecting the preferred barrier configuration. This ensures the selected system aligns with project needs and applicable separation guidelines.
We begin by reviewing site layout, available separation distances, and environmental exposures to guide the team in selecting the preferred barrier configuration. This ensures the selected system aligns with project needs and applicable separation guidelines.
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002
System Design & Specification
System Design & Specification
Based on project parameters, we define panel configurations, mounting conditions, and structural considerations. Approval drawing, including the reactions transferred to the slab or foundation, are provided to support accurate inclusion the projects as-built drawings.
Based on project parameters, we define panel configurations, mounting conditions, and structural considerations. Approval drawing, including the reactions transferred to the slab or foundation, are provided to support accurate inclusion the projects as-built drawings.
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003
Integration & Field Coordination
Integration & Field Coordination
We develop plans alongside your team, ensuring sustainable results. Our hands-on approach includes support, monitoring and adaptation to embed changes and deliver long-term value.
We develop plans alongside your team, ensuring sustainable results. Our hands-on approach includes support, monitoring and adaptation to embed changes and deliver long-term value.
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Our Expertise
Where engineering, performance, and reliability meet measurable results
ENGINEERING DESIGN
Engineered solutions that deliver proven fire protection
We help teams configure BESSY systems that meet required fire ratings, site conditions, and performance criteria.
ENGINEERING DESIGN
Engineered solutions that deliver proven fire protection
We help teams configure BESSY systems that meet required fire ratings, site conditions, and performance criteria.
SYSTEM PERFORMANCE
Optimizing fire separation and improving site safety
We validate performance through certified testing and real world installation data to support dependable execution.
SYSTEM PERFORMANCE
Optimizing fire separation and improving site safety
We validate performance through certified testing and real world installation data to support dependable execution.
PROJECT INTEGRATION
Supporting consistent deployment across energy storage sites
We provide clear guidance to help teams integrate BESSY into site layouts and project workflows with confidence.
PROJECT INTEGRATION
Supporting consistent deployment across energy storage sites
We provide clear guidance to help teams integrate BESSY into site layouts and project workflows with confidence.
Building partnerships that strengthen energy storage projects
Engineering Support
Clear Communication
Reliable Delivery
We work closely with utilities, EPC contractors, and engineering teams to deliver safe and reliable fire separation for battery energy storage sites. Through hands on support and clear communication, we help projects move forward with confidence and long term performance in mind.
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frequently asked questions
Straightforward answers to help you make informed choices.
What is the BESSY system used for?
BESSY is an engineered passive fire barrier system used to help control the spread of fire and associated elevated temperatures between battery energy storage units. It supports defined separation distances and provides reliable fire separation in utility, commercial, and industrial energy storage projects.
How do I know which BESSY configuration I need?
Configuration depends on separation distance, site layout, exposure conditions, and project requirements. Our engineering team reviews these factors and recommends the most appropriate BESSY configuration for each application.
What information do you need to provide a quote or specification?
Typical information includes site drawings or sketches, equipment spacing, desired separation performance, local code considerations, and any structural or foundation constraints. The more detail you can share, the more precise our recommendations will be.
What testing and certifications support BESSY?
BESSY is supported by testing to UL/ULC and ASTM standards. Listings and documentation are available to assist with engineering review, permitting, and specification requirements.
Can BESSY be used on existing sites or only new projects?
BESSY can support both new installations and retrofits on existing sites, subject to available space, foundations, and access. We work with project teams to evaluate feasibility and integration options in each case.
Do you provide engineering support during installation?
Yes. We provide technical guidance, documentation, and clarification during installation to help ensure BESSY is installed as designed and performs as intended in field conditions.
What is the BESSY system used for?
BESSY is an engineered passive fire barrier system used to help control the spread of fire and associated elevated temperatures between battery energy storage units. It supports defined separation distances and provides reliable fire separation in utility, commercial, and industrial energy storage projects.
How do I know which BESSY configuration I need?
Configuration depends on separation distance, site layout, exposure conditions, and project requirements. Our engineering team reviews these factors and recommends the most appropriate BESSY configuration for each application.
What information do you need to provide a quote or specification?
Typical information includes site drawings or sketches, equipment spacing, desired separation performance, local code considerations, and any structural or foundation constraints. The more detail you can share, the more precise our recommendations will be.
What testing and certifications support BESSY?
BESSY is supported by testing to UL/ULC and ASTM standards. Listings and documentation are available to assist with engineering review, permitting, and specification requirements.
Can BESSY be used on existing sites or only new projects?
BESSY can support both new installations and retrofits on existing sites, subject to available space, foundations, and access. We work with project teams to evaluate feasibility and integration options in each case.
Do you provide engineering support during installation?
Yes. We provide technical guidance, documentation, and clarification during installation to help ensure BESSY is installed as designed and performs as intended in field conditions.
What is the BESSY system used for?
BESSY is an engineered passive fire barrier system used to help control the spread of fire and associated elevated temperatures between battery energy storage units. It supports defined separation distances and provides reliable fire separation in utility, commercial, and industrial energy storage projects.
How do I know which BESSY configuration I need?
Configuration depends on separation distance, site layout, exposure conditions, and project requirements. Our engineering team reviews these factors and recommends the most appropriate BESSY configuration for each application.
What information do you need to provide a quote or specification?
Typical information includes site drawings or sketches, equipment spacing, desired separation performance, local code considerations, and any structural or foundation constraints. The more detail you can share, the more precise our recommendations will be.
What testing and certifications support BESSY?
BESSY is supported by testing to UL/ULC and ASTM standards. Listings and documentation are available to assist with engineering review, permitting, and specification requirements.
Can BESSY be used on existing sites or only new projects?
BESSY can support both new installations and retrofits on existing sites, subject to available space, foundations, and access. We work with project teams to evaluate feasibility and integration options in each case.
Do you provide engineering support during installation?
Yes. We provide technical guidance, documentation, and clarification during installation to help ensure BESSY is installed as designed and performs as intended in field conditions.
