-
UCL Fire Technical Note - TN038a
________________________________________________________________________________________________________________________
Date Last Amended: Apr 18 1.
Issued by - Fire Safety Manager, UCL Estates, Gower Street,
London, WC1E 6BT - This guide is to be regarded as a general
statement of requirements and is in addition to relevant British
Standards or any other instructions received from the Local Fire or
Building Control Authorities
Fire Safety Technical Note
FUME CUPBOARDS FIRE SUPPRESSION SYSTEMS - DESIGN AND CAUSE &
EFFECT
Contents:
What both Designers & Principal Contractors need to know:
..................................................................
1
1.0. Fume Cupboard (FC)
Design...........................................................................................................
1
2.0. Is Fume Cupboard Fire Suppression Required?
.............................................................................
2
3.0. Fume Cupboard Fire Suppression Manufacturer
...........................................................................
3
4.0. Fume Cupboard Fire Alarm Cause & Effect
...................................................................................
3
5.0. Pre-Installation and Order Information Requirements
...................................................................
4
6.0. Retrofitting Fume Cupboards with PAFSS
........................................................................................
5
7.0. Fire Alarm Interfaces Details
............................................................................................................
5
8.0. Miscellaneous
...................................................................................................................................
6
9.0. Attachments:
.....................................................................................................................................
6
What both Designers & Principal Contractors need to
know:
1.0. Fume Cupboard (FC) Design 1.1. Fume cupboards - discharge
ducting (with diameters typically between
250mm and 500mm dependent on type, number and setting out
arrangements) should not be fitted with internal fire dampers (see
BS EN14175-2:2003), but provided in fire resisting structure when
passing through fire compartments, as any other services would:
Generally a ducting may be constructed using:
o Rigid polyvinylchloride (PVC) - this is the most widely used
material where service temperatures up to 60°c, are envisaged;
o Polypropylene - polypropylene may be used where service
temperatures up to 90°c, are envisaged or where organic solvents in
condensate form may be present as the material burns readily when
ignited by flame and drips as it burns;
o Moulded glass fibre/resin laminate (GRP) - GRP may be used for
fume extract systems where a duct of high structural strength is
required;
o Stainless steel and coated mild steel - stainless steel and
coated mild steel are used when very high air temperatures are
envisaged giving some degree of fire protection.
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UCL Fire Technical Note - TN038a
________________________________________________________________________________________________________________________
Date Last Amended: Apr 18 2.
Issued by - Fire Safety Manager, UCL Estates, Gower Street,
London, WC1E 6BT - This guide is to be regarded as a general
statement of requirements and is in addition to relevant British
Standards or any other instructions received from the Local Fire or
Building Control Authorities
2.0. Is Fume Cupboard Fire Suppression Required? 2.1. No
Requirement for Fume Cupboard Fire Suppression - low risk
activities
undertaken where no flammable materials used or activities
generally confined to tissue culture in microbiological safety
cabinets / hoods fume cupboards then fire suppression - will not
generally be required.
2.2. FC Fire Suppression Systems - shall be considered where the
processes and substances being used, are of an organic nature and /
or where rapid flame propagation is likely. Where fire suppression
is required, then the system should be introduced at the design
stage but MUST be appropriate to the chemical or substances that
may be used within the fume cupboard.
2.3. Where fire suppression is required - generally suppression
media will be Monnex1 a BC Dry Powder, with Class D fire
suppression also available (subject to risk assessment for
non-standard applications see Table below).
Standard Application for
Class BC Solvent fires:
Specialist Applications for Class D Flammable Metal Fires:
*Fires involving significant quantities petroleum or solvent
based products;
Note1: *Monnex (see below) extinguishing agent is suitable for
dealing with Class BC fires, including a wide range of hydrocarbon
oils, gasoline, diesel, fuel oils, liquefied gases like hydrogen,
liquefied natural gas (LNG), coal gas, liquefied petroleum gas
(LPG), alcohols, ketones, ethers & esters.
#Fires involving: Sodium Metals# Pyrophoric materials# / Strong
oxidising agents# / Metal Hydrides# / Magnesium$ / Titanium$,
Aluminium$ / Lithium$ #Note2 - Specialist-extinguishing agents for
flammable metal fires available using low velocity discharge of L2
or M28 Dry Powder. $Note 3 - a new Extinguishant that may be
considered for a wide range of Class D risk, including Magnesium,
Titanium, Aluminium and Lithium called Aqueous Vermiculite
Dispersion (AVD), which is a water-based material with a suspension
of vermiculite. It forms a foam blanket over the burning metal,
using spray nozzles to apply media by local application to a
specific area (and not as system total flood application). AVD is
NOT suitable for metals that do not burn as a liquid i.e. Sodium,
were traditional Class D powder should be used.
2.4. A ‘manual actuator’ and fire alarm interface is to be
provided for each unit system, which is can be used by operators to
discharge the system in a pre-emptive way.
1 MONNEX™ dry chemical powder is based on potassium bicarbonate
/ urea complex, which interferes with the chemical reactions
occurring in the combustion zone, with high temperatures in the
combustion zone causing the powder to explode or decrepitate,
breaking down the powder into minute particles within the fire.
This dramatically increases its surface area for rapid quenching of
the free radicals that perpetuate the chain reaction of the fire,
providing speed of control and fire extinction. It is suitable
dealing with all Class BC fires, including a wide range of
hydrocarbon oils, gasoline, diesel, fuel oils, liquefied gases like
hydrogen, liquefied natural gas (LNG), coal gas, and liquefied
petroleum gas (LPG). It is also particularly effective against
industrial chemicals like alcohols, ketones, ethers & esters,
which conventional dry chemical powders find more difficult to
knockdown.
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UCL Fire Technical Note - TN038a
________________________________________________________________________________________________________________________
Date Last Amended: Apr 18 3.
Issued by - Fire Safety Manager, UCL Estates, Gower Street,
London, WC1E 6BT - This guide is to be regarded as a general
statement of requirements and is in addition to relevant British
Standards or any other instructions received from the Local Fire or
Building Control Authorities
2.5. Each system consists of one or more pressure vessels that
are pressurised to 15 bars with Nitrogen propellant. The cylinder
has a discharge control valve that is connected to discharge
pipework and nozzles. The discharge valve is held shut by nitrogen
gas at 15 bars pressure within pneumatic detection tube.
2.6. Pneumatic detection tube is positioned and secured in the
protected volume. When there is a fire or very high ambient
temperature within the protected volume, the tube bursts and the
discharge control valve is subsequently opened, discharging
immediately through the discharge nozzles, extinguishing the fire.
Discharge nozzle positions are dependent on Fume Cupboard type
(bench or walk-in, as detailed in each system schematic type
attached).
2.7. The PAFSS is designed to extinguish larger fires not small
ones - initially, system may not activate due to insufficient heat.
Therefore, the following options are available:
manual release on front of fume cupboard to release PAFSS;
Monnex fire extinguishers from nearest fire point to be
used;
2.8. Consultation Potential installation of fire suppression in
fume cupboards should be discussed with the UCL Fire Safety
Manager, to ensure that the correct provision provided for the risk
being used.
3.0. Fume Cupboard Fire Suppression Manufacturer 3.1. Mandatory
- use the following fire suppression system for fume cupboards:
Pneumatically Actuated Fire Suppression System (PAFSS) by
Jactone Products Ltd (www.jactone.com):
FUME CUPBOARD FIRE SUPPRESSION:
Jactone Products Ltd Springvale Business Park Springvale Avenue
Bilston West Midlands WV14 0QL
PoC: Craig Halford (MD) Tel: 01902 357777 Email:
[email protected] Web: www.jactone.com YouTube channel:
jactone1
4.0. Fume Cupboard & MSC Fire Alarm Cause & Effect 4.1.
Fume Cupboards and Vented Microbiological Safety Cabinets (MSC) -
fume
cupboards will normally be provided with independent AHU /
Strobic plant from the general building system. The design shall
ensure that the cupboards Do Not close down on activation of the
fire alarm, but kept running.
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UCL Fire Technical Note - TN038a
________________________________________________________________________________________________________________________
Date Last Amended: Apr 18 4.
Issued by - Fire Safety Manager, UCL Estates, Gower Street,
London, WC1E 6BT - This guide is to be regarded as a general
statement of requirements and is in addition to relevant British
Standards or any other instructions received from the Local Fire or
Building Control Authorities
(a). Fume cupboards which continue running whilst other services
close down shall be provided with a YELLOW break glass type
‘Firefighter’s Switch’, to allow operational firefighters to shut
down the system, if required.
Locate of firefighters switches are to be installed / fitted on
main stair landings / firefighting stairs or lobbies / adjacent to
the main fire alarm panel, to be agreed.
The firefighters switch shall generally be fitted / installed at
approx. 250-300mm below ceiling level (to meet local conditions)
and to ensure unintended operation or accidental damage.
These switches should be suitably labelled with the fume
cupboard and laboratory location details with fume cupboard or
vented MSC ‘shut down Lab xxx on floor x’ or similar.
see firefighters switch options in TN038 at Item 18;
Locations should be agreed with UCL Fire Safety Manager.
5.0. Pre-Installation and Order Information Requirements 5.1.
All Systems - the following information is required to assist
Jactone design
and deliver systems bespoke for each FC, by the Estates Project
Manager (UPO) or Departmental Users:
Site Survey - every FC requires to be surveyed prior to
installation of PAFSS. Where practicable, Jactone to undertake a
site survey prior to tender and order confirmation;
FC Manufacturer Information – provide type and make of the FC
installation proposed or already in use;
Volume - provide, internal volume of the cupboard expressed in
m3 (internal width, depth and height in mm);
Fixing of System – note cylinder unit mounting preference is at
end of banks of FC at high level;
Fixing of System – note cylinder unit mounting preference at low
level or within under cupboard is not recommended - but subject to
the following:
o banks of more than four FCs may require low levels space as
discharge runs from cylinder may be excessive;
o other specific reasons determined locally at each
installation;
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UCL Fire Technical Note - TN038a
________________________________________________________________________________________________________________________
Date Last Amended: Apr 18 5.
Issued by - Fire Safety Manager, UCL Estates, Gower Street,
London, WC1E 6BT - This guide is to be regarded as a general
statement of requirements and is in addition to relevant British
Standards or any other instructions received from the Local Fire or
Building Control Authorities
Installation Contractor – note for tendering purposes PAFSS
installation contractor can fit up to a maximum of three units each
day;
As Installed Information - provide FC room plans in AutoCAD to
assist design;
Laboratory Information - Lab room numbers and Lab Staff contacts
details to be collated including name, numbers and email to be
passed to Jactone though Estates Project Manager;
6.0. Retrofitting Fume Cupboards with PAFSS 6.1. Enabling works
- the following is required to assist and ensure fitting by
Jactone Installation Team, by the Estates Project Manager (UPO)
or Dept. Users:
Cleaning - FC to be cleared of all contents and cleaned /
decontaminated with ‘clean to work’ certificate issued prior to any
works to unit;
Baffles Cleaning - baffles to be removed cleaned and working /
functioning, including fixing attachments;
Baffles Reaffixing - baffles will be re attached / refitted by
PAFSS engineers on completion of installation;
Departmental Staff Action - Department to provide cleaning and
‘Safe to Work Certificate’ to UPO prior to works to install systems
by Jactone team.
7.0. Fire Alarm Interfaces Details 7.1. Fire Alarm Maintenance
Provider to be consulted regarding fume cupboard
installations
Fire Alarm Interface (1) - provide fire alarm interface
connection with all installations (UCL fire alarm maintenance
provider to supply and fit an interface) so any activation sends a
generic fire signal on 1 x fire alarm zone indicating room location
of FC, but not each individual FC. The interface should be placed
locally to the pressure switch detailed below, enabling
connection;
Fire Alarm Interface (2) – PAFSS units will be provided with a
three wire (common, open and closed) switch with an activation
pressure of 4-8 Bar. Assuming regular satisfactory visual pressure
monitoring is done via the simple pressure gauge on the fume
cupboard control panel, any dramatic loss of system pressure to a
level of 4-8 Bar, will then be indicative of system discharge;
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UCL Fire Technical Note - TN038a
________________________________________________________________________________________________________________________
Date Last Amended: Apr 18 6.
Issued by - Fire Safety Manager, UCL Estates, Gower Street,
London, WC1E 6BT - This guide is to be regarded as a general
statement of requirements and is in addition to relevant British
Standards or any other instructions received from the Local Fire or
Building Control Authorities
7.2. The UCL Fire Alarm Maintenance Provider details: Fisk Fire
Protection Ltd, Orchard House, 34- 5 Orchard Street, Chelmsford
Essex, CM2 0HDY (www.fiskfire.co.uk) Tel: 01245 - 244399
UCL Site Manger (Fisk Fire) James Moughton E:
[email protected] Mob: 07791 - 732255
Fisk Project Works Coordinator / Liaison Fire Alarm Engineer:
Adam Prestage E: [email protected] Mob: 07931 - 592381
UCL Contracts Manager (Fisk Fire) = Mark Fisk - Mobile: 07977
064648 / Email: [email protected]
8.0. Miscellaneous 8.1. Signage - where PAFSS manual release
override is provided, it is to be
identified with a portrait or landscape sign to suite local
conditions (see below).
8.2. Record Keeping - for maintenance purposes, a record of each
PAFSS unit installed is to be issued to the UCL Fire Safety
Manager.
8.3. User notes of FC suppression - see UCL Fire Safety
technical Notes TN038b.
8.4. Maintenance - the UCL Fire Safety Manager will arrange
annual and post discharge maintenance requirements.
9.0. Attachments: Sizing and installation schematics;
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Fume Cupboard Fire Suppression Release
1. Pull safety pin on manual actuator.
2. Press quickly and firmly on the strike knob.
LLP540(Rev0)
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www.AVDFIRE.com
Aqueous Vermiculite Dispersion
✓ AVD is a stable suspension of Vermiculite platelets with a
typical Dv90 of 180 microns (0.18mm)
✓ AVD is non flammable and has excellent insulation
properties
✓ It has a typical solids content of 17%
✓ It has a typical viscosity of 3000cP
CLASS DFLAMMABLE METAL FIRES
Dupré Minerals AVD is an aqueous dispersion of chemically
exfoliated Vermiculite. Vermiculite deposits are primarily a
mixture of thin, flat flakes of the minerals vermiculite,
hydrobiotite and biotite. Vermiculite is the name given to a group
of laminar aluminium-iron-magnesium silicates containing hydrated
interlayer cations. Exfoliated vermiculite is produced either
thermally, whereby the interlayer water is explosively removed
causing expansion, or chemically which creates microscopic,
individual platelets that are freely suspended in water.
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Technical Information
Typical Properties
Dupré Minerals Limited, Spencroft Road, Newcastle-under-Lyme,
Staffordshire, ST5 9JE
Tel +44 1782 383000 Fax +44 1782 383101
Email [email protected] www.dupre-minerals.com
Minimum Maximum Typical
D90 (90% of particles less than) 160 µm 200 µm 180 µm
Solids Content 16% 18% 17%
Viscosity 2500cP 4500cP 3000cP
While every reasonable effort is made to ensure that the
information provided in this document is accurate*, no guarantees
for the accuracy of information are made. Dupré’s website and
material data relating to information, products or services (or
third part information, products and services) is provided ‘as is’.
It is provided without representation or endorsement and made
without warranty of any kind, whether express or implied, including
but not limited to the implied recommendations or warranties of
satisfactory quality, performance or fitness for a particular
purpose, non infringement, compatibility, security or accuracy.
*The technical data provided herein reflects typical indicative
results of testing of products under controlled conditions, to
provide the best information to allow end users, specifiers,
installers, contractors, retailers and alike to determine the
suitability of Dupré products for intended application
0.01 0.1 1 10
Particle Size (µm)
Volu
me
(%)
100 1000 3000
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.0
0
10µm
Particle Size Analysis (Malvern Mastersizer 2000)
Chemical Analysis (of Source Vermiculite)
Physical Properties
AppearanceDupré’s AVD (Aqueous Vermiculite Dispersion) is a
gold/brown aqueous suspension.
SiO2 39.4%
MgO 25.2%
Al2O3 8.8%
K2O 4.5%
Fe2O3 4.0%
CaO 1.8%
CO2 1.4%
TiO2 0.8%
F 0.5%
Subject to storage under suitable conditions between a
temperature of 5°C to 30°C Shelf life of 2/3 years subject to the
above storage conditions
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FSTFV300 / FSTFV301 – PAFSS Detection Tube
The PAFSS Fire detection tubing for fire detection and
activation of fire extinguishing systems
The heart of the PAFSS product range is our detection tube which
acts as a linear heat and flame detector. The pressurized detection
tube is completely flexible and can be run throughout the risk
area. As an integral part of the extinguishing system, there is no
need for an external power supply to detect fire and activate the
fire extinguishing system. The tube pressure is provided by the
system gas. Upon flame impingement or heat the tube ruptures at the
hot spot and by depressurization the cylinder valve is activated to
operate the extinguishing system. When used in conjunction with the
PAFSS plug–in tube connectors, the tube meets the requirements of
ISO16750-3:2007 – for road vehicles.
The following tube qualities are available:
Standard quality For normal stationary installations such as CNC
machines and control panels (FSTFV300-RED)
HR-quality Applications in the automotive sector, rail vehicles
and applications with (FSTFV301–BLACK) demanding environmental
conditions such as high temperatures, UV
exposure, aggressive media.
FSTFV300
FSTFV301
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Fume Cupboard TypeCylinder
Size (Kg)Protected Volume (m
3)
Internal Working Area
Minimum Suggested
Nozzle Quantity
2 1.6 2 x FSN001
3 2.4 2 x FSN001
4 3.2 2 x FSN001
4 3.2 4 x FSN001
6 4.8 4 x FSN001
12 9.6 8 x FSN001
Monnex BC Powder
Bench
High Level Low Level
Walk In
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March 2016
P a g e | 2
Technical data
FSTFV300 Standard quality
FFSTFV301 HR quality
Colour
Red (RAL3000)
Multi-layer tube external layer: Black internal layer:
Natural
Operating Temperature
Optimal temperature for long-term
use is -20°C to +65°C. Higher
temperatures may lead to a reduction
in service life. Steady load to max.
+65°C have been tested. The lowest
operating temperature is stipulated at
minus 40°C
Optimal temperature for long-term use is - 20°C to +65°C. Higher
temperatures can lead to a reduction in service life. Steady load
to max.+80°C have been tested. The lowest operating temperature is
stipulated at minus 40°C.
UV
-
UV-stabilized
Life time
Normal industrial environmental conditions are permissible as
generally known for PA materials which are suitable for long-term
use. Low humidity could cause brittle fracture which should be
considered during maintenance and relocating.
Dimensions (inner Ø / outer Ø) 4mm x 6mm 4mm x 6mm
material
modified polyamide (PA)
modified polyamide (PA)
Melting point
approx. +220 degrees Celsius when heating up with 10
K/minute
operating pressure Recommended between 11bar and 23bar within
whole temperature range. optimal filling pressure: 18bar, depending
on existing safety devices
burst pressure
approx. 120 bar at 20°C (without flame impingement)
bursting temperature
(At 15 Bar) (At 15 Bar) 185⁰c FSTFV300 170⁰c FSTFV301
The PAFSS detection tube is suitable for long-term use (8-10
years can be assumed as a guideline for service life)
under normal climatic and environmental conditions (optimal
operating temperatures and without particular influence
from mediums). A reduced service life can be attributed to
particular influences. These influences might be:
Physical load (i.e. through constant movements of the
tubing)
Increased operating temperatures
Constant or frequent UV radiation
Influence of mediums There are many results of examinations
concerning the influence of mediums, which however cannot be
complete
because of the large number of chemical products. A list of
these examinations from the manufacturer of the basic
material can be seen on Pages 3-6. In case of doubt, tests
should be carried out with PAFSS detection tubing under
pressure and subjected to the medium concerned for a
representative period.
The serviceability of the detection tube is tested within the
scope of annual testing of the fire suppression system by
an Approved Installer. The detection tube has to be replaced if
signs of a change in the tube are noticed, which could
result in a functional impairment. Normally, the complete
detection tube has to be replaced, because there is a
risk by just renewing sections of the tube that sections
presumed to be undamaged have actually already been
damaged.
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March 2016
P a g e | 3
48 mineral oil *** 49 motor oil *** 50 sodium carbonate 10%
aqueous *** 51 sodium chloride saturated *** 52 sodium hypochlorite
5% aqueous * 53 nitro benzene ** 54 fuming sulfuric acid o 55
oxalic acid 10% aqueous ** 56 ozone * 57 perchlorethylene *** 58
petroleum ether *** 59 phenol * 60 phosphoric acid 10% aqueous * 61
potash saturated *** 62 propane *** 63 pyridine *** 64 resorcin o
65 crude oil *** 66 salicylic acid *** 67 nitric acid concentrated
o 68 hydrochloric acid 1% * 69 hydrochloric acid concentrated o 70
sulfur *** 71 sulfur dioxide
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March 2016
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87 hydrogen peroxide 30% o
88 hydrogen peroxide 10% *
89 hydrogen peroxide 2% * 90 wine *** 91 tartaric acid aqueous
** 92 xylol *** 93 zinc chloride 50% aqueous ** 94 citric acid
concentrated **
34 Butylacetate 1 35 Calcium chloride, aq 1 36 Calcium nitrate,
aq 1 37 Carbon disulfide 1 38 Carbon tetrachloride 1 39 Carnation
oil 1 40 Chlorine, g 4 41 Chlorine, I 4 42 Chlorobenzoic acid 3 43
Chloroform 3 44 Chlorosulfonic acid 4 45 Chrome bath 4 46 Chromic
acid 4 47 Chromosulfuric acid 4 48 Chromium salts 1 49 Citric acid
1
Medium (aq = in an aqueous solution) PA (Nylon)
50 Cleaner 1 51 Coca-Cola® 1 52 Cocoa 1 53 Coconut oil 1 54
Cod-liver oil 1 55 Coffee 1 56 Cooking oil, animal 1 57 Cooking
oil, vegetable 1 58 Corn oil 1 59 Cresol 4 60 Cresol, aq 3 61
Cyclohexane 1 62 Cyclohexanol 1 63 Cyclohexanone 1 64 Decalin® 1 65
Detergent 1 66 Dibutyl phtalate 1 67 Diesel fuel 1 68 Dimethylether
1 69 Dimethylformamide 1
40 cupric sulfate 10% aqueous ***
41 magnesium chloride 10% aqueous
***
42 seawater *** 43 methane *** 44 methanol *** 45 methylene
chloride ** 46 methyl ethyl ketone *** 47 lactic acid aqueous
**
abbreviation: ••• chemically stable, only small reversible
changes of dimensions •• conditionally permanent; changed
dimensions after longer time period
• chemically unstable; deployable under certain conditions o
soluble or strongly affected in short time period
Chemical Resistance of PAFSS detection tube FSTFV301 black 4x6
Chemical Resistance (at room temperature)
1 Resistant 2 Largely resistant 3 Fairly resistant 4
Non-resistant 5 Liable to dissolve
Medium (aq = in an aqueous solution) PA (Nylon)
1 Acetic acid 4 2 Acetic acid anhydride 1 3 Acetone 1 4
Aluminium salts, aq 1 5 Alums, aq 1 6 Aminobenzoic acid 2 7
Ammonia, aq 1 8 Ammonia, g 1 9 Ammonium acetate, aq 1 10 Ammonium
carbonate, aq 1 11 Ammonium chloride, aq 1 12 Ammonium nitrate, aq
1 13 Ammonium phosphate, aq 1 14 Ammonium sulfate, aq 1 15
Amylalcohol 1 16 Antifreeze 1 17 Barium salts 1 18 Battery acid 3
19 Beef tallow 1 20 Beer 1 21 Benzaldehyde 1 22 Benzoic acid 1 23
Benzoic acid, aq 1 24 Bone fat 1 25 Boric acid 1 26 Brake fluid 1
27 Bromine, aq 4 28 Bromine, I 4 29 Butane, g 1 30 Butane, I 1 31
n-Butanol 1 32 n-Butyl alcohol 4 33 Butylacetate (acetic acid butyl
ester) 1
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121 Olive oil 1 122 Oxalic acid, aq 2 123 Ozone (
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188 Tetralin® (tetrahydronaphthalene) 1 189 Tin dichloride 1 190
Toluene 1 191 Trichloroethylene 2 192 Turpentine (oil of) 1 193
Urea, aq 1 194 Vanilla 1 195 Vaseline 1 196 White spirit 1 197 Wine
1 198 Xylene 1 199 Zinc 3
175 Soybean oil 1 176 Spruce needle oil 1 77 Starch 1 178
Stearic acid 2 179 Sugar, aq 1 180 Sulfur 1 181 Sulfuric acid
(concentrated) 4 182 Sulfuric acid (up to 50 %) 4 183 Sulfur
dioxide, g 1 184 Tar (hot tar) 1 185 Tartaric acid, aq 1 186 Tea 1
187 Tetrahydrofuran 1
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Cylinder and Bracket
PAFSS Quick Fit Wall Bracket
Optional extra
detection tube for
multiple baffle slots
Pressure Switch – for
integration with Fire
Alarm/BMS
Manual Actuator
Stainless Steel
Pipework and
Discharge Nozzles
Detection Tube
UCL 2KG MONNEX BC POWDER INDIRECT PAFSS BENCH FUME CUPBOARD
SCHEMATIC 1 03/06/16
(High Level Cylinder)
-
Cylinder and Bracket
PAFSS Quick Fit Wall Bracket
Optional extra
detection tube for
multiple baffle slots
Pressure Switch – for
integration with Fire
Alarm/BMS
Manual Actuator
Stainless Steel
Pipework and
Discharge Nozzles
Detection Tube
UCL 2KG MONNEX BC POWDER INDIRECT PAFSS BENCH FUME CUPBOARD
SCHEMATIC 2 03/06/16
(Low Level Cylinder)
-
Cylinder and Bracket
PAFSS Quick Fit Wall Bracket
Optional extra
detection tube for
multiple baffle slots
Pressure Switch – for
integration with Fire
Alarm/BMS
Manual Actuator
Stainless Steel
Pipework and
Discharge Nozzles
Detection Tube
UCL 3KG MONNEX BC POWDER INDIRECT PAFSS BENCH FUME CUPBOARD
SCHEMATIC 3 03/06/16
(High Level Cylinder)
-
PAFSS Quick Fit Wall Bracket
Cylinder and Bracket
Optional extra
detection tube for
multiple baffle slots
Pressure Switch – for
integration with Fire
Alarm/BMS
Manual Actuator
Stainless Steel
Pipework and
Discharge Nozzles
Detection Tube
UCL 3KG MONNEX BC POWDER INDIRECT PAFSS BENCH FUME CUPBOARD
SCHEMATIC 4 03/06/16
(Low Level Cylinder)
-
Cylinder and Bracket PAFSS Quick Fit Wall Bracket
Pressure Switch – for
integration with Fire
Alarm/BMS
Manual Actuator Stainless Steel
Pipework and
Discharge Nozzles
Detection Tube
UCL 4KG MONNEX BC POWDER INDIRECT PAFSS WALK-IN FUME CUPBOARD
SCHEMATIC 5 03/06/16
(High Level Cylinder)
-
Cylinder and Bracket PAFSS Quick Fit Wall Bracket
Pressure Switch – for
integration with Fire
Alarm/BMS
Manual Actuator Stainless Steel
Pipework and
Discharge Nozzles
Detection Tube
UCL 6KG MONNEX BC POWDER INDIRECT PAFSS WALK-IN FUME CUPBOARD
SCHEMATIC 6 03/06/16
(High Level Cylinder)