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When the modular container needs fire and explosion protection and external cables need to be connected to the container, how to do it?

Use MCT (the multi-cable transit system) to ensure that the container meets the air tightness and pressure requirements.
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MCT features:
  • Protects against fire, smoke, explosions, rodents and other hazards;
  • Protects against the elements and hazards caused by weather as well as water, sand and dust from splashes or hoses;
  • MCT, specifically designed for IEC, ATEX and AEX standards, can be used in hazardous areas;
  • MCTs can provide certified gas-tightness to a catastrophic pressure of 2.5 bar (~36 psi) in demanding offshore applications, and they can easily meet onshore requirements aiming at maintaining a pressure slightly positive to atmosphere.
MCT
Key words:
#MCT #pressurised container #ATEX #IECEx #offshore container #workshop container #TLS #explosive atmospheres
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What is ATEX?
The name ATEX comes from the French ATmosphère EXplosibles, describing the equipment and use of a product to be located in an explosive atmosphere.
The ATEX directive applies to a wide range of equipment, generally including offshore platforms, petrochemical plants, flour mills and other equipment used in potentially explosive atmospheres. The Directive also applies to safety devices beneficial to the safety of equipment, which may be used outside potentially explosive atmospheres.
 
What is IECEx?
IEC Scheme for Certification to Standards for Electrical Equipment for Explosive atmospheres, referred to as IECEx explosion-proof certification, was established in 1996 and is an international explosion-proof certification organization for explosion-proof electrical products.
The IECEx Directive refers to the certification of electrical equipment specially used in industrial sectors such as petroleum, chemical, coal mining, textile, food processing and military industries that may accumulate explosive gases, vapors, dust or fibers and other explosive hazards.
 
Difference between ATEX and IECEx
  • ATEX is a mandatory certification in the EU, and all explosion-proof equipment sold in the EU market must pass the ATEX explosion-proof directive 94/9/EC certification.ATEX certification is only available in EU countries.
  • IECEx is a voluntary certification, not mandatory, and is not currently recognized by the EU and North American markets.
  • ATEX certification can be based on IECEx test reports, but ATEX documents do not necessarily support IECEx certificates.
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Key words:
#pressurised container #ATEX #IECEx #offshore container #workshop container #TLS #explosive atmospheres
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    Any requirements about Battery Energy Storage System Container |Accommodation Cabin |Workshop Container |Temporary refuge (TR) shelter |MWD/LWD cabin |Reefer container |Sewage treatment plant container etc, please don’t hesitate to contact us. 
    We will provide professional design solutions and high-quality services. All the production process we will have a dedicated team to follow up to ensure product quality.
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Positive pressure and negative pressure are relative to the pressure in the surrounding space.
 
Positive pressure: the air supply volume is greater than the exhaust volume. The indoor air is under positive pressure. Combined with the air conditioning unit, the cleanliness of the air sent into the container can be guaranteed.
Positive pressure is preferentially applied to containers where the external environment is harsh (such as ZONE 0, ZONE 1, and ZONE 2) and the internal environment is secure.
Please download the A60 offshore pressurised container product brochure for reference. 
 
Negative pressure: the air supply volume is less than the exhaust air volume, and the room is under negative pressure. The surrounding air flows into the space and is discharged through the exhaust outlet for unified treatment.
Negative pressure is preferred in containers where the external environment is safe but the interior will produce toxic and harmful gases.
​Please download laboratory container brochure for reference. 
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CPFG means "Combinated Pressurization, Fire and Gas" shutdown system. According to IEC60079-13(2019) and "Safety Rules for Offshore Fixed Platforms", the functional container will have a positive pressure air purge mode. When CPFG is turned on, CPFG will first control the blower fan to make the main cabin carry out air change at least 12 times per hour, and make the main cabin reach a positive pressure environment of >=50PA. When the main warehouse to achieve positive pressure 50PA environment, indoor safety zone, cabin DB(distribution board) will get electricity, so that air conditioning, sockets, lights and other electrical appliances get electricity, all sockets, air conditioning machine (non-explosion-proof), part of the lights.
OFFSHORE POSITIVE PRESSURE CONTAINER
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What is airlock room?

The air lock area is located at the cabin door, separating the cabin door from the work area, and is the transition area into the work area.​

How to ensure the pressure balance of the pressurized container?

​The inner wall part forming the air lock area is provided with an inner door for entering and leaving the work area. The cabin be provided with a pressure monitoring device to ensure the pressure balance in the cabin.

What is airlock room for?

The installation of the two doors in the airlock area ensures that the protective pressure in the main room does not drop to zero when entering the airlock area after opening the airlock door.
​Escape doors can be installed on the walls away from the airlock area in case of crisis, further improving the safety of the cabin. The positive pressure explosion-proof offshore function cabin makes maximum reasonable use of the limited space and provides a more comfortable and safe living and working environment for the staff on the complicated and changeable offshore platform.
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"ONSHORE ISO SHIPPING CONTAINERS" VS "OFFSHORE DNV SHIPPING CONTAINERS"
  •  EXPOSURE TO HARSH ENVIRONMENTS
  • Offshore containers are often left exposed to open sea on the decks of supply vessels, and also loaded to platforms in harsh weather conditions, this also means that the minimum design temperature is normally specified as -20° C and the primary structure requires material of sufficient toughness for -20° C.
  •  LOADING AND UNLOADING FORCES
  • Because many offshore containers cannot be used with typical lifting equipment such as spreader beams, the methods of loading and unloading put different types of pressure on the structures of offshore containers. Offshore containers are supplied with a permanently installed sling set. Most do not have corner castings, and if they do, they are not allowed to be lifted from them.
  •  NON-STANDARD DESIGNS
  • Most offshore containers are built to fit a specific piece of equipment, and therefore, do not fit into the ISO container category.

DIFFERENT HAZARDOUS AREAS HAVE A CERTAIN IMPACT ON THE DESIGN OF CONTAINERS, BUT HOW TO IDENTIFY ZONE 0, ZONE 1, AND ZONE 2 HAZARDOUS AREAS?
  • Zone 0: the area where explosive gases persist for a long time or will occur frequently.
  • Zone 1: the area where an explosive atmosphere may occasionally occur during normal operation. It may exist as a result of repair, maintenance operations, or leaks.
  • Zone 2: the place where an explosive atmosphere is unlikely to occur during normal operations, but if it does, it will only last for a short time. These areas become dangerous only in the event of an accident or some unusual operating conditions.
zone1 ZONE2 ZONE0