Why is Positive Pressurization in ZONE 1/ZONE 2 Containers as per IEC60079-13 important?

Introduction
In hazardous environments, safety is of paramount importance. Industries such as oil and gas, petrochemicals, and pharmaceuticals often operate in areas classified as ZONE 1 or ZONE 2, where the presence of flammable substances poses a risk. In these settings, the use of containers that are positively pressurized, following the guidelines outlined in the IEC60079-13 standard, becomes crucial. This article explores the reasons behind the necessity of positive pressurization for containers used in ZONE 1/ZONE 2 and highlights the benefits of implementing this safety measure.
 
Understanding ZONE 1/ZONE 2 Classification
Before delving into the significance of positive pressurization, it is essential to understand the classification of hazardous areas. ZONE 1 refers to an environment where flammable gases, vapors, or liquids are likely to be present in sufficient quantities to cause an explosion. ZONE 2, on the other hand, indicates an area where such substances are less likely to be present, but may still occur under abnormal conditions.
 
The Role of Positive Pressurization
Positive pressurization is a technique used to prevent the ingress of hazardous substances into a protected area. When applied to containers in ZONE 1/ZONE 2, it ensures that the pressure inside the container is maintained at a level higher than the surrounding atmosphere. This positive pressure acts as a barrier, preventing the entry of potentially explosive or flammable gases, vapors, or dust.
 
Benefits of Positive Pressurization

• Enhanced Safety:

By maintaining a positive pressure inside the container, the risk of hazardous substances entering the container is significantly reduced. This greatly minimizes the likelihood of explosions or fires, safeguarding personnel, equipment, and the environment.

• Contaminant Exclusion:

Positive pressurization acts as an effective measure to exclude contaminants from the container. It keeps out dust, dirt, moisture, and other unwanted particles that could potentially compromise the integrity of the equipment or contaminate sensitive substances being stored or processed. 

• Preventing Ingress of Flammable Substances:

One of the primary purposes of positive pressurization is to prevent the ingress of flammable gases, vapors, or liquids into the container. This is particularly crucial in ZONE 1/ZONE 2 environments, where the concentration of these substances can reach hazardous levels. By maintaining a higher internal pressure, the container ensures that any potential leaks occur outward, rather than allowing hazardous substances to enter.

• Compliance with IEC60079-13 Standard:

Positive pressurization is mandated by the IEC60079-13 standard, which provides guidelines for the design, installation, and maintenance of electrical equipment in hazardous areas. By adhering to this standard, organizations demonstrate their commitment to safety, ensuring that their operations align with internationally recognized best practices.
 
Conclusion
Positive pressurization plays a vital role in maintaining a safe working environment in ZONE 1/ZONE 2 hazardous areas. By implementing this technique in containers, organizations effectively protect their personnel, equipment, and surroundings from the risks associated with flammable substances. The adherence to the IEC60079-13 standard ensures that these safety measures are in line with internationally recognized guidelines. Ultimately, the use of positively pressurized containers enhances safety, prevents the ingress of hazardous substances, and contributes to the overall well-being of industries operating in hazardous environments.
 
TLS Offshore Containers / TLS Special Containers is a global supplier of standard and customised containerised solutions. 
Wherever you are in the world TLS can help you, please contact us.
 
Regarding Intelligent pressurized containers from TLS , please download Offshore pressurised mud logging cabin brochure and MCC | Switchgear | VFD | VSD pressurised shelter for reference.
 

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#Positive pressurization #ZONE 1/ZONE 2 containers #Hazardous environments #IEC60079-13 standard #Flammable substances #Safety measures #Hazardous areas #Explosions and fires #Contaminant exclusion #Equipment integrity

Written by Oliver

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