BS EN 15276-1 pdf free download
BS EN 15276-1 pdf free download. Fixed firefighting systems – Condensed aerosol extinguishing systems.
5.3 Agent distribution
The maximum area coverage and the related maximum and minimum height of the protected enclosure for each aerosol generator unit size shall be determined by tests using the fire test protocol described in 2.5.
5.4 Discharge time
Discharge time shall be specified by the manufacturer and shall not exceed 90 s when tested in accordance with 7.14.1.
5.5 Ambient temperature and humidity operation ranges
Condensed aerosol generators shall operate at ambient temperatures as specified by the manufacturer and as a minimum requirement from —20 °C to +50 °C.
Condensed aerosol generators shall operate at ambient humidity up to 95 %.
These operation ranges shall be verified by the temperature and humidity operation range tests as
described in 7.fi.
5.6 Service life
The service life of condensed aerosol generator under specific conditions, as described in 5.5. shall be specified by the manufacturer and as a minimum requirement shall not be less than 15 years.
The specified service life shall be verified by test using the accelerated ageing test as described in 2.7.
5.7 Shelf life and storage conditions
The shelf life and storage conditions shall be specified by the manufacturer.
5.8 Corrosion
The aerosol generator shall operate according to 7.14 and shall show no sign of damage which could alter the proper extinguishing action after being subjected to the corrosion test described in Z.
Any copper alloy part used in the component shall not crack, when tested in accordance with 29 (stress corrosion test).
5.9 Vibration
The aerosol generator shall operate according to 7.14 after being subjected to a vibration test described in 7.10.
5.10 Mechanical Shock
The aerosol generator shall operate according to 7.14 after being subjected to a drop test as described in 7.11.
5.11 Discharge temperature
5.11.1 General
The requirements of 5.11.2 and 5.11.3 shall be verified by test according to the procedure described in 7.14.4.
5.11.2 Casing temperature
The manufacturer shall specify the maximum developed temperature for aerosol casing that shall not exceed 400 °C.
5.11.3 Aerosol flow temperature
The selected unit sizes shall be appropriate for the protected area in terms of the minimum thermal clearance from the discharge outlets.
The following general criteria shall apply:
— for locations where personnel can be situated, the minimum thermal clearance shall refer to a temperature not exceeding 75 °C;
— for locations where combustible materials or equipment can be situated, the minimum thermal clearance shall refer to a temperature not exceeding 200 °C;
— for locations where non-combustible equipment can be situated, the minimum thermal clearance shall refer to a temperature not exceeding 400 °C.
5.12 Activation device
5.12.1 General
The characteristics of the activation device shall be verified and the reliability of operation tested by using the test method as described in 7.13.
5.1Z.Z Electrical activation device
The manufacturer shall specify at least the minimum activation current and its duration, form of the signal, maximum monitoring current, range of voltage and the type of connection for a multiple generators arrangement.
5.12.3 Thermal activation device
The manufacturer shall specify at least the minimum rated temperature at which the device operates.
5.13 Function reliability
When activated, the aerosol generator shall operate satisfactorily when tested in accordance with the procedure described in 7.14 (Function test).
5.14 Open lire conditions
As the aerosol generators are installed inside the protected enclosure, the generators shall pass the function test after being subjected to the fire exposure test as described in 7.15.
5.15 Accessories
The mounting bracket shall be tested together with the generator for corrosion, vibration and drop test as described in 7, 7.10, and 7.13.
5.16 Documentation
The manufacturer shall prepare and maintain documentation.
The manufacturer shall prepare installation and user documentation.BS EN 15276-1 pdf download.
