The latest amendment to British Standard BS 5839-6:2019+A1:2020 introduces key changes to fire alarm system classifications. These updates ensure a clearer definition of alarm system grades, enhancing fire safety in residential properties.
What's New?
The amendment includes new system grades, with significant modifications to Grade C and the replacement of Grades D and F with subcategories D1, D2, F1, and F2.
Revised Alarm System Grades
Grade C
A fire detection system with alarm sounders, powered by both mains and a standby supply, controlled through a central unit.
Grade D1
For new builds and existing properties
Mains-powered detectors with a tamper-proof battery as a standby power source.
Grade D2
Standard option
Mains-powered detectors with a user-replaceable backup battery.
Grade F1
Enhanced battery option
Battery-powered detectors with a tamper-proof primary battery.
Grade F2
Basic battery option
Battery-powered detectors with a user-replaceable primary battery.
Key Changes Summary
Clearer Classifications
The subdivision of Grades D and F provides clearer guidance on battery requirements
Improved Safety Standards
Tamper-proof battery options (D1 and F1) enhance long-term reliability
Flexibility in Implementation
Options for both new builds and existing properties
What This Means for Property Owners
- •Existing installations may need to be reassessed against the new classifications
- •New installations must comply with the updated grade specifications
- •Consider upgrading to tamper-proof battery options for enhanced reliability
- •Professional assessment recommended to ensure compliance
Choosing the Right Grade for Your Property
For HMOs and Shared Houses
Typically require Grade D systems
Recommended: Grade D1 for new installations
For Single Family Homes
May use Grade F systems
Recommended: Grade F1 for long-term reliability
Improving Fire Safety Standards
These updates aim to improve fire safety standards in homes by ensuring clarity in system requirements and installation compliance. The new classifications provide property owners and fire safety professionals with clearer guidance on selecting appropriate fire detection systems for different property types and situations.
Need Help Understanding the New Standards?
Our fire safety experts can assess your current systems and advise on compliance with the updated BS 5839-6:2019+A1:2020 standards. Ensure your property meets the latest requirements.