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Page 27 of 27

12.5  Overview

Below a summary of the results:

Test Description

Test criteria reached (time in minutes, seconds)

FED = 1  

@ 1.8 m

FED = 2 

@ 1.8 m

FED = 1  

@ 0.6 m

FED = 2 

@ 0.6 m

8m x 4m room 

with open doors

Automist @ 5m* Not reached  

Not reached

Not reached

Not reached

Automist @ 8 m 3 m 3 s

 

(heat)

3 m 13 s

 

(heat)

Not reached

Not reached

Free Burn

2 m 19 s

 

(heat)

2 m 27 s

 

(heat)

Not reached

Not reached

8m x 4m room 

with

 

closed doors

Automist @ 8 m  23 m

 

(heat)

 Not reached 

 Not reached 

 Not reached 

Free Burn

3 m 40 s 

 

(heat)

12 m 53 s

 

(heat)

7 m 30 s

 

(heat)

21 m 3 s

 

(heat)

4m x 4m room 

with

 

closed doors

Automist @ 3 m 25 m

 

(asphyxia)

 Not reached

28 m 17 s

 

(asphyxia)

 Not reached

*Test was not run until completion, based on partial results

In a closed room,  Automist improved survivability in both room sizes, increasing time to incapacitation by 
a factor of 6 and avoiding fatal conditions. In an open room scenario, Automist, at a distance of 5 m, was 
able to avoid unconsciousness and incapacitating pain from heat.  When Automist was placed 8m away in 
a well ventilated room the effectiveness was reduced due to excessive secondary oxygen supply to the fire 
from the closest open door.  Automatic door closer and/or retainers are a low cost addition which can be 
used to increase the effectiveness of Automist’s ability to offer volume protection in rooms over 4 m x 4 m x 
2.5 m or spaces susceptible to draft.

The Automist system was able to demonstrate an improvement in the room heat and asphyxiant gas 
conditions and the extent of fire damage in all the tests which an unsuppressed scenario was compared, 
extending the time taken to reach FED calculated human tenability levels.

Summary of Contents for Automist Series

Page 1: ...sults from a test suite at BRE Global to enable building control and fire industry professionals to assess or specify Automist Plumis Ltd Seamless Fire Protection www plumis co uk A technical guide fo...

Page 2: ...correctly installed and maintained in accordance with its instruction manual Automist is designed to operate in a manner similar to that demonstrated in the testing performed at BRE Global subject to...

Page 3: ...d Details Scheme Automist is covered by Registered Detail RD171 Those wishing to compare Automist directly to a conventional BS9251 sprinkler system in greater detail should refer to section 8 2 of th...

Page 4: ...d as our recommendations however these may need modification during the course of negotiation with approving authorities with regard to a specific project specification a Automist wall mount kit 3N 3...

Page 5: ...watermist nozzles High pressure hose Stainless steel braided 3 4 water supply hot cold water supply pipes Fused connection unit on a separate circuit Automist supply label cable tie Wired or wireless...

Page 6: ...ip pan fire can greatly exacerbate the fire the same is not true for water mist as the updraught from the flame and the evaporation of the tiny droplets prevents water from reaching and collecting in...

Page 7: ...00 mm gaps are gap between the pump perimeter and the enclosures Protected electrically by suitable fusing and powered by an independent circuit either via a delayed action RCD or no RCD 1 7kW 230V an...

Page 8: ...ked so that any heat alarm sounding in the protected areas will activate the Automist unit Where multiple Automist units serve a single area these must be similarly interlinked with a separate relay o...

Page 9: ...ocally excluding oxygen reducing temperatures and thus inhibiting the combustion reactions of the fire Fire growth is restricted This is achieved through the reduction in temperatures and slowing of c...

Page 10: ...g design flexibility Whilst the above guides have focused specifically on residential sprinklers they do not exclude any form of fire suppression as a potential alternative Paragraph 0 18 of Approved...

Page 11: ...ly Fractional Effective Dosage FED measurements and free burn control tests were included to allow a complete and objective assessment These tests were run in BRE Global s Watford UK Burn Hall and mim...

Page 12: ...Configuration At a system performance level it is necessary to demonstrate that Automist is fit for purpose in domestic buildings As discussed earlier at a component level the Automist system is CE m...

Page 13: ...rt 2 Heat Detector Sounder linked to the Automist control panel and water mains supply valve Achieved Areas of Coverage Whole house apartment coverage Identified fire risk room s Achieved As a fire en...

Page 14: ...ts the Automist is capable for being run for extended periods more easily than residential sprinklers with less potential water damage Commissioning Pressure test to 1 5 times the working pressure or...

Page 15: ...he fire at an early stage minimising heat and smoke generation and providing cooling to improve the potential for escape Providing a protected route out from the loft rooms to a final exit at the grou...

Page 16: ...his guidance cannot be achieved there is the potential for debate over the most appropriate and practical solutions Approved Document B would suggest that dry rising water mains be provided where basi...

Page 17: ...that a single pump can cover an area of up to 32m2 with a maximum ceiling height of 5m Based on Plumis s experimental data from BRE spray heads must be located within 5m line of sight of any possible...

Page 18: ...ry Automist designs can be recommended by specifiers by following these recommendations however Plumis accredited installers are trained to specify install commission and maintain the Automist system...

Page 19: ...aining Automist is an innovative fire suppression unit which can be installed as a compensatory measure for layouts that don t match the conventional prescriptive guidance from Approved Document B or...

Page 20: ...of asphyxiant gases results in cerebral hypoxia insufficient oxygen available to brain tissue which leads to collapse with loss of consciousness followed by death if the exposure is prolonged The inha...

Page 21: ...ntreated plywood panels each measuring 1 2 m x 2 4 m in size and 12 mm thick forms the walls in the corner of the test room The foam sheets consist of two 100 mm thick pieces of polyurethane foam with...

Page 22: ...hroughout the 30 minutes of test period highlighting Automist s ability to provide vital time for a rescue to take place from a severe furniture fire 2 0 2 0 FED Heat FED Asphyxia 1 8 1 8 1 6 1 6 1 4...

Page 23: ...tably FED Asphyxia also remains below 0 3 for 15 minutes 2 0 2 0 FED Heat FED Asphyxia 1 8 1 8 1 6 1 6 1 4 1 4 1 2 1 2 1 0 1 0 0 8 0 8 0 6 0 6 0 4 0 4 0 2 0 2 0 0 0 0 0 0 0 0 5 0 5 0 10 0 10 0 15 0 15...

Page 24: ...cent doors left open Automist is located either 5 m or 8 m away from the fire In an unsuppressed scenario with fresh oxygen to feed the fire the heat exposure became lethal after just 2 5 minutes This...

Page 25: ...1 5 1 0 0 5 0 0 Time mins control automist 5m automist 8m 8m x 4m x 2 5m Open Room FED Asphyxia loss of consciousness is expected when the FED of asphyxiant gases FEDAG reaches 1 while death is expect...

Page 26: ...s the difference in temperature at 1 8 m height between the suppressed and unsuppressed kitchen fire Automist significantly reduced the temperature and therefore the damage and chance of the fire spre...

Page 27: ...Automist improved survivability in both room sizes increasing time to incapacitation by a factor of 6 and avoiding fatal conditions In an open room scenario Automist at a distance of 5 m was able to...

Page 28: ...rved Ref Plu6 v 1 LABC For further information please contact Plumis Ltd HMS President 1918 Victoria Embankment London United Kingdom EC4Y 0HJ www plumis co uk fireprotection plumis co uk COMM I S S I...

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