PRESSURIZED CABINETS
description
& FEATURES
emb has always kept up-to-date with the evolution of the Standards and Directives concerning the various Ex types of protection, but dedicating its best resources to the “Ex p” types of protection concerning the “Pressurized Cabinets”
When in 1970 there were not yet National or European Standards for this type of protection, emb produced in compliance with the US Standard NFPA 496, up to the first CESI certificate of 1983, issued according with CENELEC “harmonized” Standards, series EN 50000 and relating to different dimensional combinations of a single model with volume = 1 m³. Today the quantity of certified models is practically infinite
In fact, the current MAP series emb certifications covers all volumes between 0.07 and 7.20 m³, in the possible dimensional combinations suitable for creating the most appropriate construction forms to the Customer’s needs.
Main Types of Pressurized Cabinets made by emb and emb Alternative Solutions, for cases of insufficiency or lack of protective gas
PRESSURIZED CABINETS WITH INTEGRATED ANALYSIS SYSTEMS
Pressurized Analysis Cabinets with integrated Continuous Emission Monitoring Systems (CEMS) for measurement of: Gas (NO/NOx/NH3/HCl/CO/CO2/SO2/O2/CH4/H2S) H2O, Wet O2 and Dusts. The analyzers can be equipped with a flame ionization detector (FID) for the measurement of unburned hydrocarbons and the monitoring of the Lower Explosive Limit (LEL)
Pressurized Analysis Cabinets with integrated Oxygen Analysis Systems (Paramagnetic, Electrochemical, or Zirconium Oxide Analyzers
Pressurized Analysis Cabinets with integrated TOC (Total Organic Carbon) Analysis Systems for process water treatment plants
Pressurized Analysis Cabinets with integrated Sodium (Na) Silica (SiO2) and Chlorides/ Sulphates Analyzers in water and in the turbines steam cycle
Pressurized Analysis Cabinets with integrated Moisture Analyzer (Hygrometer)
Pressurized Analysis Cabinets with integrated Analyzers (Calorimeters) for measuring the calorific value (Wobbe Index) of a combustible Gas (or Gas mixtures)
Pressurized Analysis Cabinets with integrated qualitative and structural chemical Analysis Systems of organic and inorganic compounds through Spectrometer
Pressurized Analysis Cabinets with integrated Systems for monitoring fluid concentration through Refractometer
Pressurized Analysis Cabinets with integrated TAS Systems (Total Analysis Systems)
All Analysis Cabinets can house any Sampling Systems and/or Reagent tanks.
In case of presence on board Analysis Cabinet of cylinders containing dangerous gases [for example Hydrogen for Flame Ionization Detector (FID) supply] emb is able to propose the necessary skills to review the classification of the area surrounding the Analysis Cabinet if, in the above classification, the impact due to the H2 cylinder has not been correctly considered by the User
PRESSURIZED CABINETS WITH INTEGRATED PLANT PARTS OR COMPLETE MACHINES
Electrolytic Cells for Water Electrochlorination Plant
Transformer-Rectifier Group for Water Electrochlorination Plant
Inverters
Igniters for Burners
Hydraulic Control Units
Steam Generators
Column type Slip Rings
Thyristor Control Unit (SCR)
Uninterruptible Power Supplies (UPS)
Cameras
PRESSURIZED CABINETS WITH INTEGRATED COMMAND AND CONTROL EQUIPMENT (COMPUTERS, PRINTERS, PLC, REMOTE I / O, ETC.) FOR DIFFERENT TYPES OF SYSTEMS AND/OR INSTALLATIONS
Distributed Control Systems (DCS) / Emergency Stop Systems (ESD) / F&G Systems (Fire and Gas Leak detection)
“Information Technology”Systems
MMS systems (Machine Monitoring System)
Burner Management Systems (BMS)
Filling Systems
Weighing Systems
Alarm Systems
Dusts Sampling Systems for Coal-Fired Power Station
Dosing and Mixing Plants for the Food, Chemical, Cosmetic and Pharmaceutical Industry.
Flare Gas Plants
Drilling Muds treatment Plants
Filtration Plants
Reciprocating/Centrifugal Compressors and Turbines, Plants
Pumps Plants
Plants for Centrifugal Decanters, Extractors and Centrifugal Separators, for agri-food, slop oil residues, water treatment and environmental remediation
Plants for Electric Heaters
PRESSURIZED CABINETS series MAP…/V, “Ex nR” CABINETS series MAR… and “Ex nA nC” CABINETS, for cases of insufficiency or lack of protective gas
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MAP 950/V (Volume = 9,5 m³) – ATEX 0722 II 2G Ex px ia IIB T3
Cabinet with Steam Generator for Maintenance and Remediation of Industrial Tanks
the Pressurization, with Compressed Air, of a MAP series cabinet, can be made impossible for one of the following reasons:
– Compressed Air is not available in the plant
– Compressed Air is available, but its flow rate is insufficient, having to pressurize a large cabinet
In this case, there is the possibility of using MAP…/V and MAP…/VAC series cabinets, suitable for both Zone 1/21 and Zone 2/22
The pressurization of the MAP…/V and MAP…/VAC series cabinets is carried out by means of Atmospheric Air drawn by means of a Ventilation Unit of our MVU series, as specified in the MAP Cabinets Catalogue on page. 32)
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where the quantity of protective gas (Compressed Air or Inert Gas) necessary to pressurize MAP cabinets is not available, it is possible, only and exclusively in Zone 2 and in compliance with the limitations imposed by EN 60079-15, to switch from a MAP series cabinet , with “Ex pzc” type of protection, to a MAR series cabinet, with “Ex nR” type of protection and therefore protected against explosions, by means of the Restricted Breathing technique (see MAP Cabinets Catalogue, pages 34-35)
The MAR series cabinets are equipped with a verification Kit of the limited breathing properties, and also with a Certificate of Conformity assessment N ° EMB 17 CERT 903X, issued by emb as a Competent Body, in the definition of the EN IEC series 60079: “individual or organization which can demonstrate appropriate technical knowledge and relevant skills to make the necessary assessments of the safety aspects under consideration”
This qualification is recognized to us by virtue of our experience of over fifty years in the field of “Explosion-protected Equipment”, which allows us to identify from time to time the real possibilities of applying the most suitable type of protection
MAn 96/CM – ATEX II 3(1)G Ex nA nC IIC T6÷T4 Gc
Intrinsically Safe Barrier Cabinet, for Emissions Monitoring System – VERSALIS RAGUSA
Where the quantity of protective gas (Compressed Air or Inert Gas) necessary to pressurize MAP cabinets is not available, and not even is it possible to fall within the limits of dissipated power, etc., established by EN 60079-15 for the MAR Cabinets, there is a further possibility represented by the MAn series Cabinets.
These Cabinets, like those of the MAR series, are used, only and exclusively, in Zone 2, but have a further limitation as that can only be equipped with Equipment protected with at least “Ex nA” and/or “Ex nC” type of protection
The MAn series Cabinets are accompanied by ICEPI 14 ATEX 013X certificate
models
& EXAMPLES OF APPLICATION
The model of a pressurized cabinet series MAP is defined by a basic code, composed as follow:
M: Manufacturer’s code (EMB)
AP: Pressurized Cabinet (Armadio Pressurizzato, in Italian)
…: 3-digit number indicating the Cabinet Dimensions, defined by its internal volume expressed in m3 and multiplied by 100 (for example: MAP 520 = 5,2 m3 x 100)
For Pressurized Cabinets according to the North American NFPA 496 standard, the basic code is completed with the acronym NA [for example: MAP520 NA]
Starting from 2020 EMB is able to supply UL certified MAP … NA series pressurized cabinets, for installation in potentially explosive areas (Hazardous Locations) classified: “Class I Division 1”, “Class I Division 2”, “Class II” “Type Z or type X pressurizing”
This is thanks to an effective collaboration with the Hazloc Srl Company
Finally, for the complete definition of the model, it may be necessary to add one of the following 2 suffixes
/AC: for Pressurized Cabinet equipped with Air Conditioner [for example: MAP520/AC or MAP520 NA/AC]
/I: for ATEX I M2 certified Pressurized Cabinet, for installation in Mines [for example: MAP520/I]
Note: the suffix “/I” excludes “/AC” since, Air Conditioners suitable for installation in a mine are not available
The following Application Examples show some of our most meaningful realizations of ATEX, IECEx, etc. certified MAP cabinets
II 3(1)G Ex ia pz [ia IIC Ga] IIB T3 Gc
