What is IEC 60079-10-8: 2011 ?

IEC 60079-8: 2011 is a global standard that outlines the requirements for protecting equipment and systems from the effects of explosive atmospheres. In this section. we will focus on the classification of hazardous locations and the precautions that must be taken to ensure safety.

Classification of Hazardous Locations

In IEC 60079-8: 2011. hazardous locations are classified into four categories based on the likelihood and severity of the explosive atmosphere. These categories are:

1. Zone 1: The most dangerous area. where the most severe explosive atmospheres exist. This area should be avoided and all electrical equipment should be designed to operate within this area.

2. Zone 2: A moderate area where explosive atmospheres may occur. This area should be avoided and all electrical equipment should be designed to operate within this area.

3. Zone 3: A low-risk area where explosive atmospheres are unlikely to occur. This area can have electrical equipment that is not designed to operate within this area.

4. Zone 4: The safest area. where all electrical equipment can be installed and operated without any safety precautions.

Preparing for Explosive Atmospheres

To ensure the safety of electrical equipment and systems in explosive atmospheres. it is important to follow the guidelines outlined in IEC 60079-8: 2011. This includes the following steps:

1. Conducting a risk assessment: This involves identifying the potential hazards and evaluating the likelihood and severity of those hazards.

2. Choosing the appropriate equipment: Based on the risk assessment. choose electrical equipment that is designed to operate within the explosive atmosphere.

3. Designing for safety: Incorporate safety features into the electrical design. such as explosion-resistant casing and grounding.

4. Installation and testing: Install the electrical equipment in accordance with the manufacturer's instructions and perform thorough testing to ensure proper operation.

5. Maintenance and inspection: Regularly inspect and maintain the electrical equipment to ensure that it is still operating safely.

Conclusion

In conclusion. IEC 60079-8: 2011 is an essential standard for protecting electrical equipment and systems from the effects of explosive atmospheres. By following the guidelines outlined in the standard. electrical equipment can be designed and installed safely in hazardous locations. ensuring the safety of workers and the public.