bock atex compressors

GEA Refrigeration Technologies

Semi-hermetic Compressors in Explosion-risk

Environments

Bock ATEX Compressors

GEA Refrigeration TechnologiesBock ATEX Compressors

Differences to standard compressors


… 6 model sizes with 20 capacity stages from 5,4 to 122,4 m³/h (50 Hz)

The current program …

D

I

S

P

L

A

C

E

M

E

N

T

EX-HG12P EX-HG22P EX-HG34P EX-HG4 EX-HG5 EX-HG6


Type key – ATEX Compressor


General information about ATEX (french: ATmosphère EXplosibles)

Explosion-risk in nearly all process engineering systems

Static discharge, electrical

equalising currents and

shock waves can trigger

explosions

ATEX

- Creates uniform

minimum standards

- Improves the safety and

health protection of workers

- Legal requirement

since 2003

During manufacturing,

processing, transport and

storage: flammable gases,

vapours and mist are

generated


General measures for explosion-risk areas

Explosion protection document

Adequate Instructions

Written work permit

(in the case of dangerous work)

Warning singns

Probibition of ignition sources

Tests and inspections

GEA Refrigeration Technologies

What does this mean for refrigerating machines?

Bock ATEX Compressors

Refrigerants areflammable

Particular safety measureshave to be taken

An allocation of zones

according to EC directive

1999/92/EC has to be

made

Compressors

Refrigeration- andair-conditioning

systems(with refrigerants ofthe safety group A2

and A3)


Zone 0: The explosive atmosphere is

present constantly, for long periodsof time or frequently

Zone 1: The explosive atmosphere is

occasionally present during normal operation

Zone 2: The explosive atmosphere is not

present during normal operation, oronly briefly

Zone allocation as an obligation of themachine operator


• All components of a refrigeration plant must be examined (compressor, evaporator, condenser,

valves, sensors, …)

• Declaration of the important material properties pertinent to explosion protection

• Use of only correspondingly marked and identified components with the necessary documentation

• Heeding to installation standards and instructions

• Consideration of interactions with other machinery in the system and with the environment

• …

Other obligations of the machine operator

bock atex compressors

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