If adopted in its current form, PAS 9970 could require the complete replacement of temporary fire alarm systems currently used on UK construction sites – yet the consultation that will shape the final standard closes on 18 March.
The British Standards Institution (BSI) has released PAS 9970-1 and PAS 9970-2 for public consultation.
Together, these documents propose a new framework for how fire safety is managed on construction sites and how temporary fire alarm systems should be specified and deployed.
While a PAS (Publicly Available Specification) is technically voluntary, these documents often become widely adopted across the industry and can quickly influence contractor requirements, insurer expectations and project specifications.
If PAS 9970 is adopted in its current form, it could represent one of the most significant shifts in construction fire safety practice in recent years.
Why This Matters
Construction sites present unique fire risks: constantly changing layouts, temporary power, hot works and evolving fire loads.
Until now, contractors have relied largely on guidance documents such as HSG 168 and the Joint Code of Practice on the Protection from Fire of Construction Sites and Buildings Undergoing Renovation. These provide important principles but do not include detailed technical requirements for temporary fire alarm systems.
PAS 9970 seeks to fill this gap by introducing a structured framework for site fire safety management and, critically, a specification for temporary fire detection and alarm systems.
The Potential Industry Impact
The draft specification in PAS 9970-2 introduces detailed technical requirements for temporary fire alarm systems used on construction sites.
However, based on the draft wording, there is currently no temporary fire alarm system on the UK market that fully meets all of the proposed requirements.
This has several potential implications for the industry:
- Manufacturers may need significant time to develop and certify new compliant systems
- Independent testing and certification could take 24 months or more
- Existing temporary fire alarm equipment currently used on projects will ultimately require replacement
- Contractors and project teams could face new specification and procurement challenges
For organisations operating across multiple sites or frameworks, these changes could have practical, operational and financial implications.
How PAS 9970 Is Structured
PAS 9970 is divided into two parts.
PAS 9970-1: Fire Safety in Construction – Organisation and Site Fire Safety (Code of Practice)
Sponsored by HS2 Ltd, this section focuses on how contractors should manage fire risk on construction sites, including responsibilities, governance and fire risk assessment processes.
PAS 9970-2: Temporary Fire Alarm Systems (Specification)
Part 2 introduces technical requirements for temporary fire detection and alarm systems used on active construction sites, including:
- System design expectations
- Performance and monitoring requirements
- Testing and verification procedures
- Battery resilience and power safety
- Reporting times and alarm coverage
- Environmental durability requirements
These requirements are intended to establish greater consistency in how temporary fire alarm systems are specified and deployed across the industry.
Industry Collaboration
PAS 9970 has been developed through a structured, consensus-based process facilitated by BSI.
A steering group of contractors, fire specialists, regulators and industry representatives has contributed to the development of the draft document. Howler has been represented within this group, providing technical input alongside other sector stakeholders.
The consultation phase now provides the wider industry with the opportunity to review the draft and ensure the final specification is both technically robust and practical for live construction environments.
Consultation Deadline: 18 March 2026
The PAS 9970 consultation is currently open for public review.
If your organisation operates, specifies, procures or manages temporary fire alarm systems, this consultation is highly relevant. Your feedback and opinions are critical to the development of the standard.
Once the consultation closes, the steering group will review submitted comments and agree the final document prior to publication.
In short: this is the industry’s opportunity to influence the final outcome.
- PAS 9970-1 – https://standardsdevelopment.bsigroup.com/projects/2023-02419
- PAS 9970-2 – https://standardsdevelopment.bsigroup.com/projects/2023-02420
Have Your Say – We Can Help
PAS documents can shape industry practice for years to come. If adopted widely, PAS 9970 may influence procurement specifications, insurer expectations and site fire safety strategies across the construction sector.
For many organisations, the document is technical, detailed and time-consuming to review. If you would like help understanding the draft requirements or preparing feedback for submission, our team would be happy to assist.
We can help you:
- interpret the proposed technical requirements
- understand the potential impact on your projects
- identify areas where feedback may be appropriate
- guide you through the BSI consultation process
If you would like to discuss PAS 9970 and its potential implications, please get in touch before the consultation closes.
The deadline for comments is 18 March 2026.




