What is IEC 60079-14? Design and Installation of Electrical Systems in Explosive Atmospheres.
Short answer: IEC 60079-14, electrical installations in explosive atmospheres. design, equipment selection and installation It regulates. It is the bridge between area classification (60079-10) and periodic inspection (60079-17): it sets the rule of 'install the right equipment in the right area, in the right way'.
The safety of an explosive atmosphere installation is shaped in three stages: first, the area is classified (60079-10), then the installation is correctly installed (60079-14), and finally, it is inspected throughout its lifespan (60079-17). 60079-14 is the middle link in this chain, and without correct installation, the other two become meaningless. Because even the best equipment can become an ignition source if installed incorrectly.
Equipment Selection: Region and EPL Matching
The first rule of the standard is that the equipment protection level (EPL) must match the zone. Zone 0/20 requires the highest protection (Ga/Da), Zone 1/21 the medium level (Gb/Db), and Zone 2/22 the basic level (Gc/Dc). Additionally, the selected equipment must... gas group (IIA/IIB/IIC) and temperature class (T1–T6) Compatibility with the environment is essential. A mismatch renders even certified equipment unsuitable.
Critical Details During Installation
60079-14 describes the subtle but vital details of the installation. Cable glands It must be suitable for the protection type and cable type; leakproof and IP protection should be provided; grounding and equipotential bonding It must be complete. In intrinsically safe (Ex i) circuits, circuit compatibility calculations are also performed. Unused inputs are sealed with certified plugs. Each of these details is also the source of the most common non-conformities encountered in the field.
Initial Inspection
60079-14, requirements to be met before the installation is commissioned. first examination This includes documenting that the installation was carried out in accordance with standards and forming a reference basis for all subsequent periodic inspections (60079-17). If the initial inspection is skipped, it can never be proven that the installation was done correctly. AES conducts both the initial and periodic inspections under accreditation.
Frequently Asked Questions
What is the difference between 60079-14 and 60079-17?
60079-14 installation design, selection and installation; 60079-17 is after installation. periodic inspection and maintenance organizes.
I've got the right equipment, why is installation important?
Because incorrect cable entry, insufficient grounding, or an open entry will render even the highest quality Ex-grade equipment's protection ineffective. Safety is a combination of equipment and installation.
Install and Document Your Ex-Plumbing System Correctly.
Related service: Explosive Atmosphere (ATEX/Ex-Proof) Inspections.