What is EX-Proof Product?

What is EX-Proof Product?

Environments with solid, liquid, gaseous and powdery substances that are at risk of burning, scalding and explosion are considered hazardous areas.

“Ex-proof” is an abbreviation of the English words “Explosion proof” meaning “Explosion proof” and is a term that generally describes products suitable for use in hazardous environments.

Ex-proof products are the type that will not cause explosion or fire due to arc or spark in dangerous areas or even if it occurs for any other reason, they are safe and resistant products. Although an ex-proof standard product does not mean that it will not be affected by any explosion, scorching or fire, it is obligatory to use them in such areas as they are much more protected, durable and resistant than other standard products.

Because ex-proof products have different features even though they look like standard products visually. An ex-proof product must have clear structural and technical features. These are also accepted within the scope of some standards. ATEX and IECEX are the most known and accepted international standards in this sense. While ATEX is mostly valid for Europe and European Union countries, IECEX is a standard system that covers all countries.

Ex-proof products must be tested by authorized independent accredited institutions in line with the aforementioned standards and must be certified within the scope of their suitability. Therefore, ex-proof products that have been tested and documented in accordance with international occupational safety and employee health rules should be used for dangerous and risky areas.

 

Factories and facilities where ex-proof products must be used due to the risk of burning, explosion and scalding in all or in prominent areas;

  • Oil refineries
  • Natural gas and LPG facilities, fuel stations
  • Petrochemical factories and facilities
  • Power plants

 

  • Pharmaceutical and chemical factories

 

  • Underground and surface mines

 

  • Metallurgical plants

 

 

 

  • Airports
  • Seaports
  • Shipyards

 

 

  • Underground rail system stations and tunnels

 

 

 

  • Grain Silos
  • Fertilizer factories
  • Alcoholic beverage factories
  • Sugar and flour factories
    paper mills
  • Plants producing wood products

EX-PROOF ÜRÜN SEMBOLLERİ

ATEX

IECEX

EX-PROOF PRODUCT CLASSIFICATIONS

Classes and signs showing the areas where ex-proof products can be used and the applied protection levels.

1.

GROUPS  
Group I Mining
Group II Other Facilities/Non-Mining

 

2.

AREA CLASSIFICATION

 

 

GAS-STEAM-FOG

CATEGORY

DEGREE OF PROTECTION

Zone 0

1

Very High

Zone 1

2

High

Zone 2

3

Standard

 

3.

ENVIRONMENT

 

 

G

GAS

0, 1, 2

D

DUST

20, 21, 22

GD

GAS and DUST

0, 21 / 1, 21 / 2, 22

 

4.

PROTECTION MODES

 

d (gaz)

Flameproof guards

e (gaz)

Elevated security

i (gaz&toz)

Natural security

m (gaz&toz)

Spark and ignition protected

n (gaz)

Non flammable

o (gaz)

Anti-Ignition Oily

p (gaz)

Pressure protection

t (gaz&toz)

Protected against combustible dust

5.

GAS CLASSIFICATION PARAMETERS

 

GROUP

MESG (mm)

MIE (µJ)

IIA

> 0,9

> 250

IIB

0,5 < MESG < 0,9

250 < MIE < 96

IIC

< 0,5

< 96

     

POWDER CLASSIFICATION PARAMETERS

 

GROUP

CONDUCTIVITY

MEASUREMENT

IIA

Combustible powders or blends of fibers

> 500

IIB

Non-conductive

< 500

IIC

Conductive

< 500

     

 

GROUP

GROUP HARMONIES

 

 

IIA

IIA

 

 

IIB

IIA, IIB

 

 

IIC

IIA, IIB, IIC

 

 

           

 

6.

TEMPERATURE CLASSIFICATION

 

 

 

MINIMUM IGNITION TEMPERATURE FOR GAS AND DUST

MAXIMUM SURFACE TEMPERATURE

T1

> 450°C

450°C

T2

> 300°C

300°C

T3

> 200°C

200°C

T4

> 135°C

135°C

T5

> 100°C

100°C

T6

> 85°C

85°C

 

7.

EQUIPMENT PROTECTION LEVEL

EXPLANATION

Ga

Gas Protection for Zone 0

Gb

Gas Protection for Zone 1

Gc

Gas Protection for Zone 2

Da

Dust Protection for Zone 0

Db

Dust Protection for Zone 1

Dc

Dust Protection for Zone 2