Linde Ex Fahrzeuge 2

Linde Material Handling

06.07.2010

English

Linde Material Handling

Ex-Trucks

Potentially explosive-hazardous areas2008

Linde Material Handling

06.07.2010

Content

1 Fundamentals Ex-Protection

3 Ex-Trucks with Gas Safety System

2 Ex-Trucks – Full protection

Linde Material Handling

Fundamentals Ex-Protection

Potentially explosive-hazardous areas2008

Linde Material Handling

06.07.2010

Explosion triangle

Oxyg

en

IgnitionSource

Combustible Material

Linde Material Handling

06.07.2010

Potentially explosive atmosphere

Classification of explosive types of gases

T4 T5 T6(135°C) (100°C) (85°C)

Explosion groups

(450°C)

Temperature classesT3

(200°C)T2

(300°C)T1

IIC

IIB

IIA

(470°C)

Toluenel (535°C)

Acetone (540°C)Ethane (515°C)

Ethyl acetate (460°C)Ammoniac (630°C)

Benzol (555°C)

Acetic acid (485°C)

Carbonic oxide(605°C)

Methanol

Ethyl alcohol (425°C) Fuel (220-300°C)

i-Amyl acetate (375°C) Diesel fuel (220-300°C)

n-Butane (365°C) Kerosene. (220-300°C)

N-Butyl alcoh. (340°C) Fuel oil (220-300°C)

n-Hexane (240°C)

Ethylene (425°C) Ethyl glycol (235°C) Ethyl aether

Ethylene oxide (440°C) Hydrosulphide (270°C) (170°C)

Carbon(95°C)

Town gas

Hydrogen (560°C) Acetylene (305°C)

(560°C)

Propane

(455°C)

Linde Material Handling

06.07.2010

Potentially explosive atmosphere

Classification of dust

— Particle size of dust

— Max. surface temperature 2/3 of the minimum ignition temperature [°C] of the dust cloud

— Max. temperature of the surfaces with dust deposition: Safe distance lower about the minimum ignition temperature of thickest credible layer

Safe distance: 75 K

Minimum ignition temperature of thickness 5 mm = Glow temperature

Classification of dust

— Particle size of dust

— Max. surface temperature 2/3 of the minimum ignition temperature [°C] of the dust cloud

Linde Material Handling

06.07.2010

Example classification Wheat

Particle size: 37 µm

Minimum ignition temperature: 510 °C

2/3 * 510 °C = 340 °C

Glow temperature: 300 °C (Minimum ignition temperature of thickness 5mm) 300 °C – 75 °C = 225 °C

è Classification „T3“ (200 °C)

Potentially explosive atmosphere

Linde Material Handling

06.07.2010

Explosion-hazardous areas are categorized according to their susceptibility in regard to a potential manifestation of dangerous, explosive atmospheres

Flammable gases, vapuror mist

Presence of potentially explosive atmosphere

Potentially explosive area

Flammable dustin form of a dust cloud

0 Continuously, for long periods or frequently

20

1 Occasionally

22

21

2 Not in normal way, only persist for a short period

Linde Material Handling

06.07.2010

Potentially explosive area

Descriptive example

Zone 2

Zone 0

Zone 1

Linde Material Handling

06.07.2010

Potentially explosive area

According to Atex 94/9/EC the EX equipment is classified as follows:

Group of equipment II

Zone CategoryGas [G]/Dust [D]

0

1

2

20

21

22

G

G

G

D

D

D

1G

2G

3G

1D

2D

3D

Linde Material Handling

06.07.2010

Identification of equipment

Manufacturer

Certifying authority (INERIS)

and test-Nr (ATEX)

Ex-truck Group II (Above-ground)

Category 2, Gas

2G à Zone 1Explosion group II B ( e.g. Ethyl eather) Temperature class 4 (135°C)

CE- Symbol and Id-Nr. certifying authority (TÜV Rheinland) of

production plant

1

4

123

2001

3000 kg

Linde Material Handling

06.07.2010

Industrial applications of Ex-Trucks

Industries

— Chemical industry

— Petrochemical industry

— Pharmaceutical industry

— Food industry

— Offshore oil and gas rigs

— Transport / logistics

— Paint production and storage

Linde Material Handling

06.07.2010

Explosion protection measures

Fire protectionaccording to

IEC /ENPressure resistant enclosure 'd`

Basic principle

Components that could ignite an atmosphere that is potentially explosive, are sealed in a pressure tight enclosure, which can withstand an explosion of a potentially explosive mixture within the enclosure and prevents a propagation of the explosion into the external atmosphere around the enclosure

Applications Switching device, command- and display devices, steerages, engines, transformers, lights and other devices that produce sparks

Schematic viewL

Crack - s w

Linde Material Handling

06.07.2010

Upper control enclosure openedLower control enclosure opened

Explosion protection measures

Pressure resistant enclosure 'd`

Control enclosure series 115

Linde Material Handling

06.07.2010

Examples of certified Ex-components

— Control valve

— Battery connection

— Heat exchanger

— Indicator unit

— Axle

— IC- engine

Explosion protection measures

Linde Material Handling

06.07.2010

Other measures

— Antistatic seat

— Antistatic tyres

— Brass coated, non sparking

forks

Explosion protection measures

Linde Material Handling

06.07.2010

Certified third-party products

— Lighting

— Audible warning in reverse

— Flashing beacon

— Micro switch

— Ex- protected batteries

— Attachments

Explosion protection measures