Extract from the BFSPA fact file below:
During recent years there has been a steady stream of questions to BFPSA about the continued acceptability of mains powered fire alarm systems with no standby power supply. Such systems were installed in large quantities in the 1950s and 60s and were subsequently phased out, mainly as a result of the Fire Precautions Act 1971 and the requirements of BS5839-1
While the number of these systems still operational is rapidly reducing, owners of such systems that are still performing satisfactorily are often reluctant to replace them. In most cases, however, they no longer comply with the requirements of current legislation.
The Health and Safety (Signs and Signals) Regulations 1996 relate to the requirements of safety signs and signals used at work.
Clause 2, Interpretation, of these Regulations states within Section (1) the following text:
““fire safety sign” means a sign (including an illuminated sign or an acoustic signal) which –
(i) provides information of escape routes and emergency exits in
case of fire;
(ii) provides information on the identification or location of fire
fighting equipment; or
(iii) gives warning in case of fire”
As a fire alarm may be signalled by a visual or audible signal, such devices are included within the Regulations.
Schedule 1, Part 1, Section 8 of the Regulations states:
“8 Signs requiring some form of power must be provided with a guaranteed emergency supply in the event of a power cut, unless the hazard has thereby been eliminated.”
By taking the requirements of these clauses into account, the use of mains powered fire alarm systems with no standby power supply is not acceptable if they are provided as a means of meeting health and safety requirements in a place of work. In such places, fire alarm systems complying with the requirements of BS5839-1: 1988 or 2002 would normally be recommended.
FURTHER SOURCES OF INFORMATION
The Health and Safety (Signs and Signals) Regulations 1996 (Statutory Instrument 1996
No. 341).
Of course despite all this you'll not get a fire authority to follow this, the buliding we are tenants in is a case in point - 4 floors, 12 seperate office suites, 12 shops & 1 employee flat and has a 240V system with no indicator panel, just a few break glasses & banshees. No emergency lighting despite lots of internal corridors being the only MoE but no natural lighting - yet fine to the fire service as is the lack of a landlord FRA