What’s Involved in an Annual Dry Riser Test?
If you own or manage a building over 18 metres in height, it’s a legal requirement in the UK to have a
dry riser system
installed for effective fire protection. However, installation alone isn’t enough —
to remain compliant with BS9990 standards, a dry riser must also undergo a full inspection and wet test every 12 months.
This “wet test” ensures the system is functioning correctly and can deliver pressurised water when needed in an emergency.
Here’s what’s typically included in an annual dry riser test:
- Air Pressure Check:
The inspection usually begins with an air pressure test to confirm that the system’s pipework and dry valve are intact.
The air pressure keeps the valve sealed, preventing water from entering the system outside an emergency.
This step helps identify any potential leaks or weaknesses before water testing begins. - Wet Pressure Test:
The primary part of the inspection involves filling the system with water using a pump and hose,
then pressurising it to 12 bar (approximately 175 psi) for at least 15 minutes.
This confirms that the pipework can safely withstand operational pressures and highlights any leaks or faults that could compromise performance. - Component Inspection:
Every valve, seal, washer, and outlet is thoroughly checked for signs of wear or damage.
Inspectors also ensure that all cabinets are secure, accessible, and clearly labelled for emergency use.
Once complete, all outlets and cabinets are closed, locked, and sealed.
After the wet test, one of two outcomes will occur:
- Pass: You’ll receive a BS9990 compliance certificate confirming the date of inspection and that the system meets all required standards.
- Fail: The inspector will discuss any issues found and outline the repairs needed to achieve compliance.
A follow-up test can then be scheduled once remedial work is completed.
Maintaining Your Dry Riser System
The consequences of a poorly maintained riser system can be serious —
from system failure during an emergency to potential legal repercussions.
Regular inspections and servicing are the best way to ensure reliability and compliance. If water is found sitting in a dry riser, a flooded riser inspection will show where it is getting in.
At Eversafe Fire Protection, we provide comprehensive
maintenance services
for both dry and wet risers, helping you protect your property, tenants, and visitors.
To learn more or to book your annual dry riser test, contact us at
info@eversafefire.com
or call 01795 713123 to speak with our experienced team.
Not sure which type your building has? Our guide to dry riser vs wet riser sets out the differences.