Table of Contents
Advertisement
Quick Links
Automist
Product specification and technical results from a test suite at BRE Global to
enable building control and fire industry professionals to assess or specify Automist.
RD171
A technical guide for:
- Building Control
- Fire Industry Professionals
Technical Guide
TM
Plumis Ltd.
Seamless Fire Protection
www.plumis.co.uk
Page 1 of 27
Advertisement
Table of Contents
Related Manuals for Plumis Automist Series
Summary of Contents for Plumis Automist Series
- Page 1 Technical Guide Product specification and technical results from a test suite at BRE Global to enable building control and fire industry professionals to assess or specify Automist. RD171 Plumis Ltd. A technical guide for: - Building Control Seamless Fire Protection - Fire Industry Professionals www.plumis.co.uk...
-
Page 2: Table Of Contents
Plumis therefore cannot make warranties regarding detection, control, suppression or extinguishment of fires, nor the prevention of injury, death or property damage. -
Page 3: This Document
This Document Automist is a fire suppression appliance designed for residential use. Its primary application is in the gap between standardised sprinkler systems, which are designed to provide suppression to every room in a property, and building and housing regulations, which in many circumstances require fire suppression in a single open-plan “access room”. -
Page 4: System Diagram
System Diagram Two examples of generic system layouts are detailed on the following pages. As an “pre-engineered” solution which is not covered within any one British Standard the following system layouts are proposed as our recommendations, however these may need modification during the course of negotiation with approving authorities with regard to a specific project specification. - Page 5 Automist under-tap kit (4N) Assembled Automist emitter - outer cover and o-ring - manifold and two o-rings (base & upper) - six protective caps - four watermist nozzles Wired or wireless heat alarm with NC and NO Standard relay functionality monobloc tap Stainless steel braided ¾”...
-
Page 6: Automist Operation
Installation • Installation - Automist should be specified, commissioned and signed-off by Plumis or an Accredited Reseller. Each installer is fully trained to ensure that every project is installed to the very highest standards, receiving a Plumis Certificate of Approval on successful completion of their training. -
Page 7: Components And Configuration
Components and configuration Automist should be mains fed with a reliable water supply: • 6 l/min flow • 1-10 bar pressure at pump inlet • Standard BSP ¾” connection. For life safety applications exposed or partially exposed pipework must be in copper or steel for robustness. The Automist pump should be: •... - Page 8 The Automist unit will be activated by an alarm which will ensure that: • Audible warning is provided throughout the protected area. • In addition to Automist’s integrated sounder, we recommend that the detector or alarm system that activates Automist also includes its own sounder.Guidance on fire detection in dwellings is contained in BS 5839: Part 6.
-
Page 9: Fire Suppression Within A Holistic Approach
Fire suppression within a holistic approach A fire suppression device like Automist aims to control and suppress fires, significantly reducing the risk of injury, life loss and property damage by maintaining tenable conditions for as long as possible while occupants evacuate. This is achieved in several ways: •... -
Page 10: Fire Performance And Regulations Compliance
Fire Performance and Regulations Compliance All new or modified buildings constructed in the UK are required to meet the functional requirements of the Building Regulations. Guidance for meeting these requirements are outlined in various codes such as Approved Document B (ADB), supported where applicable by a wide range of British Standards. For existing buildings the Regulatory Reform (Fire Safety) Order 2005 applies, with rented residential properties also being subject to the provisions of the Housing Act 2004. - Page 11 In one of the most comprehensive test suites ever run on a mist product at the Building Research Establishment (BRE), Plumis verified the effectiveness of Automist with live burns in a series of different scenarios. The test was based on BS EN 1869:1997, DD 8458 1:2010, and the criteria of Scandinavian SRSA/DSB “Easily installed automatic extinguishing systems”.
- Page 12 FED Heat 8m x 4m x 2.5m Open Room FED Heat - when it reaches 1.0 it is assumed that an occupant will be incapacitated due to pain. Third degree burns are predicted at an FED of approximately 3.0 control automist Time (mins) The application of Automist is carefully controlled to ensure that the application does not extend beyond...
- Page 13 The following table discusses the individual elements and recommendations of BS9251 (component layouts for a residential sprinkler system that is currently considered to be of an adequate standard for life safety applications) and compares these to the configuration of Automist systems. Design BS9251 Automist...
- Page 14 Plumis or a Plumis Accredited Installer only. Each installer has been quality checked and fully trained by Plumis to ensure that every project is installed to the very highest standards. Each installer will possess a Plumis Certificate of Approval on successful completion of their training and accreditation process.
-
Page 15: Use Of Automist
Use of Automist In this section we detail typical applications for Automist, how it should be specified, and present some additional points of comparison with conventional sprinklers. • Providing separation from risk areas The guidance in Approved Document B recommends for studio flats that the kitchen should be ‘remote’... - Page 16 • Providing adequate protection when fire doors are either removed or downgraded In the example of a fire engineered solution, where the plans are compliant with Approved Document B principles, the suppression capabilities of Automist can be used in conjunction with an analysis of the proposed doors material properties and comparative fire and temperature performance, where the client wished to either use a door which was not fire resistance certified or was inherently non-fire rated.
-
Page 17: Specifying Automist
Automist design specification guidelines state that a single pump can cover an area of up to 32m , 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 fire location. - Page 18 Preliminary 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. Their early involvement in the project is recommended as they are required to verify installation proposals, provide critical supporting technical information and also commissioning certificates for project approval by Building Control or other involved third parties.
-
Page 19: Conclusions
Automist should be specified, commissioned and signed-off by Plumis or an Accredited Reseller. Each reseller is fully trained to ensure that every project is installed to a high standard, receiving a Plumis Certificate of Accreditation on successful completion of the training. -
Page 20: Appendix
In one of the most comprehensive test suites ever run on a mist product at the Building Research Establishment (BRE), Plumis verified the effectiveness of Automist with live burns in a series of different scenarios. The test was based on BS EN 1869:1997, DD 8458 1:2010, and the criteria of Scandinavian SRSA/DSB “Easily installed automatic extinguishing systems”. - Page 21 The test setups run at the BRE consisted of a simulated furniture fire and a kitchen fire. All fires were run in either a 4 m x 4 m x 2.5 m room or a larger 8 m x 4 m x 2.5 m room with doors open or closed. The door openings were 1m wide and 2.1 m high.
- Page 22 12.2 Simulated furniture fire in a closed room The graph below details the FED measurements at 1.8 m high in the 8 m x 4 m closed room scenario. In an unsuppressed fire an occupant 3 m from the fire would be incapacitated due to pain in less than 4 minutes from ignition.
- Page 23 The graphs below show the results for the same test but at a lower height of 0.6 m. This height could represent an inhabitant who is sleeping, sitting or has fallen unconscious. After 21 mins and 22.5 mins both heat and asphyxia threaten survivability in the unsuppressed scenarios. However in the room with Automist operating, FED asphyxia does not go beyond 1.2 in the large or a small room and FED heat remains below 0.2 for the duration.
- Page 24 12.3 Simulated furniture fire in an open room The graphs below detail the FED measurements taken in a room with 2 adjacent 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.
- Page 25 These graphs detail the same open room tests but at the lower height of 0.6 m and reiterate the results shown on the previous page. In open plan spaces it is important to locate Automist as centrally as possible, and limit openings to increase its effectiveness to limit fire growth. FED Heat 8m x 4m x 2.5m Open Room FED Heat -...
- Page 26 Automist can also be effectively used for flashover prevention; in the graph below you can see how it reduces the temperature in the room from 410°C to 155°C at its peak on the higher thermocouple. This allows a compartment to comply with a 60 minute fire containment requirement without any passive fire protection devices.
- Page 27 12.5 Overview Below a summary of the results: Test Description Test criteria reached (time in minutes, seconds) FED = 1 FED = 2 FED = 1 FED = 2 @ 1.8 m @ 1.8 m @ 0.6 m @ 0.6 m 8m x 4m room Automist @ 5m* Not reached Not reached...
- Page 28 For further information, please contact: Plumis Ltd. HMS President (1918) Victoria Embankment Automist London United Kingdom ACCREDITED EC4Y 0HJ INSTALLER www.plumis.co.uk fireprotection@plumis.co.uk Automist’s Technical Guide Version 2.5 © Plumis Ltd. 2011 - All rights reserved. Ref: Plu6/v.1 (LABC) Page 28 of 27...
Need help?
Do you have a question about the Automist Series and is the answer not in the manual?
Questions and answers