Wolf Safety Lamp Company
ATEX Explained
Ex Equipment
This guide is provided to aid in the selection of Wolf lighting products for use in potentially explosive atmospheres. Information given is based on practice within the EU, as specified in the requirements of the 94/9/EC ATEX (Equipment) Directive and the 99/92/EC ATEX (Workplace) Directive.
ATEX MARKING
II
EC-TYPE EXAMINATION CERTIFICATE NUMBER
Ex EQUIPMENT LABEL
Notified body
responsible for
EC-Type
Serial
Number
BAS
ATEX
2176
2
GD
00
1180
WOLFLITE HANDLAMP H-251A
MARKING FOR DUST
II 2 GD
ATEX MARKING
Examination
(Test House)
IGNITION PROTECTION
EEx e ib IIC T4
CE mark denotes Number of
manufacturers’
declaration
IP66 T135oC
Year Certificate Issued
ATEX Certificate
Notified Body
responsible for
EC monitoring
of production
quality
Defines suitability
of use of Group II
equipment in gas
and/or dust
Specific
Equipment
Group
BAS 00 ATEX 2176
Explosion protection mark (ATEX marking)
mark for
Explosion
Protection
CERTIFICATION CODE
X Suffix denotes special conditions of certification
U Suffix denotes Ex component approval
Battery 4V, 5Ah
type H-66 ONLY
3.6 min. 1.0A max.
of product
gases, vapours & mists
compliance to
all relevant EU
Directives
EC-TYPE EXAMINATION
CERTIFICATE NUMBER
Equipment
Category
HPR 3.75V min. 0.75A max.
Do not open or charge in Ex areas.
Charge in charger unit C-251 HV/LV ONLY.
Recharge battery immediately after use.
Ne pas charger ni ouvrir l’appareil en zones Ex.
Ne recharger que sur des chargeur C-251 HV/LV.
Recharger immediatement les batteries dechargees.
Gerat nicht im Ex-Bereich laden oder öffnen.
Nur mit Ladegerät typ C-251 HV/LV aufladen.
Nach Gebrauch sofort wieder aufladen.
atmospheres
EC NOTIFIED BODIES
Replacement parts specification
MARKING FOR DUST
IGNITION PROTECTION
to EN 50281-1-1
1180
Notified Bodies have been appointed by the governments of individual EC
countries as responsible to carry out part or all of the functions specified in
the ATEX Equipment Directive, such as EC type examination of equipment
and quality assurance assessment of equipment production.
CE mark (ATEX marking)
CERTIFICATION CODE
Safety measures to be applied in service
gases, vapours and mists to EN 50014
Supplementary approval
Lloyds Register of Shipping
marine approval
Serial/batch number
incorporating year of construction
Batch No.
IP66
T135°C
E Ex IIC
e ib
T4
Baseefa (2001) Ltd are responsible for the quality assurance assessment of
equipment manufactured by the Wolf Safety Lamp Company, this is identified
by their notified body number (1180) appearing below the CE mark on
Wolf products.
The Wolf Safety Lamp Company Ltd.
Explosion Protected equipment
‘E’ prefix denotes compliance
with CENELEC Standards in
the EN50014 series
Sheffield - S8 0YA - England
Ingress
Maximum External
Protection Gas Group Temperature
Concepts
Classification
Protection Code
Surface Temperature
Note: ‘EEx’ and Protection Concepts are not marked if a ‘Technical File’
from first principles is applied.
GAS GROUP
EQUIPMENT GROUP & EQUIPMENT CATEGORY
GROUP II GAS SUBDIVISION
Group Typical Hazard
Maximum Safe
Sparking Energy
Intrinsic Safety Ex ia/ib
Maximum Safe Gap
Flameproof Ex d
Applicable
Concepts
Equipment
Group
Equipment
Category
Protection
Level
Hazard
Use
Explosion
INGRESS PROTECTION (IP) CODE to EN 60529
Protected
Equipment
Gas Dust
Ex equipment selection for use in gases, vapours, mists or dusts must take into consideration
the environmental conditions of the area in which it is to be used. Apparatus resistance to
ingress of both solid bodies and water is identified by use of an “IP rating”.
Risk of ignition
I
Methane
I
M1
M2
Very high
protection
–
–
Operable in Ex
atmosphere
✓
✓
all concepts
Ex d, Ex ia/ib
IIA
IIB
IIC
Mining
High
–
–
De-energised
Mining
1st Numeral
2nd Numeral
protection
in Ex atmosphere
IIA
IIB
IIC
II
Propane
✓
✓
✓
✓
✓
✓
Protection Against Solid Bodies
Protection Against Water
II
1
Very high
protection
G
Zones 0,1,2,
no protection
no protection
0
0
Ethylene
D
Zones 20,21,22
> 50mm
90°
Hydrogen/Acetylene
All Gases
2
3
High
protection
G
G
Zones 1,2
Zones 21,22
Zones 2
II
1
1
Industrial
D
D
> 12.5mm
Ex e, Ex m, Ex p,
Ex o, Ex q, Ex n
15°
Normal
protection
IIB
IIA
IIC
Industrial
2
3
4
5
2
Potentially
Explosive
Zones 22
e
> 2.5mm
Atmospher
60°
Equipment sub-grouping segregates gases according to ease of ignitability by sparks or flames. These apply to flameproof Ex d and
intrinsically safe Ex ia/ib equipment only.
Equipment Group and Category identify the areas in which equipment may be safely used
3
‘CE’ MARKING AND THE 94/9/EC ATEX DIRECTIVE ON EQUIPMENT
AND PROTECTIVE SYSTEMS INTENDED FOR USE IN POTENTIALLY
EXPLOSIVE ATMOSPHERES.
> 1mm
PROTECTION CONCEPTS FOR ELECTRICAL APPARATUS
TEMPERATURE CLASS
4
5
Temperature class relates to the hot surface ignition temperature of a particular explosive
atmosphere. It must not be exceeded by the temperature classification of the equipment
intended to be used in that atmosphere.
Concept
Symbol
–
Icon
Description
Category EN Standard
MANDATORY WITHIN THE EU
‘CE’ marking has been introduced as part of the European Union’s new approach to technical harmonisation
as a means of identifying products that comply with all relevant EC Directives.
360°
–
EN 60079-0
General req.
General requirements
Explosion Protected
Hot surfaces can ignite explosive atmospheres
EN 50015*
(EN 60079-6)
Oil immersion
Ex o
2
Equipment
explosive gas excluded
by immersing ignition
source in oil
Subject to certain safeguards, products bearing the ‘CE’ mark are permitted to be sold throughout the EU
without interference from national regulatory authorities. The Directives have been put in place in order to
remove artificial trade barriers within the European Union previously caused by individual countries’ national
standards, a secondary function is as a means of regulating safety.
Risk of ignition
T1
6
6
7
8
EN 60079-2
Pressurised
Ex p
explosive gas excluded
by surrounding ignition
source with pressurised
inert gas
2
The Explosive Atmospheres 94/9/EC ATEX (Equipment) Directive became
mandatory on 1 July 2003.
T2
T3
On this date the existing Explosive Atmospheres and Gassy Mines Directives were
repealed. Since then only equipment and systems ‘CE’ marked as compliant with the ATEX
Equipment Directive (and all other relevant mandatory directives) may placed on the market within the EU.
450°C
300°C
200°C
135°C
100°C
85°C
EN 50017*
Powder filled
Flameproof
Ex q
Ex d
explosive gas excluded
by immersing ignition
source in sand
2
2
1st numeral and 2nd numeral
combined to identify level of
ingress protection, e.g. dust tight,
protected from high power water
(EN 60079-5)
The Directive applies to all equipment and systems for use in potentially explosive atmospheres within the EU.
The scope of the Directive includes electrical and mechanical equipment for use in Group I (mining) or Group II
(industrial) applications, both on and offshore and considers risks of ignition of potentially explosive gas, vapour,
mist and dust atmospheres. In addition, devices intended for use outside potentially explosive atmospheres that
contribute to the safe functioning of equipment and systems with regard to explosion risk are also included.
T4
T5
ignition within the apparatus
enclosure is contained and
will not ignite surrounding
explosive atmosphere
EN 60079-1
EN 60079-7
jets/heavy seas:
–
Ingress Protection rating: I P
6
6
Compliance of products to the ATEX Equipment Directive, through conformity assessment, takes a modular
approach, and is generally in two stages; design and production.
Increased
safety
Ex e
design excludes
the possibility of
incendive arcs, sparks
or hot surfaces
2
A common route to product design compliance is to apply to a Notified Body (Ex. Test House) for an EC
Type Examination Certificate. To comply, the equipment or system must meet the Essential Health and Safety
Requirements (EHSRs) listed in the Directive. Harmonised EU standards have been adopted by CENELEC and
CEN, relating to the design, construction and testing of equipment; a product complying with these standards
is deemed to meet the EHSRs to which the standards relate. Where apparatus follows a protection concept
not covered by these standards, compliance to the 94/9/EC Directive is still possible by compiling a ‘Technical
File’ from first principles, demonstrating compliance through test and assessment to the EHSRs relating to
design and construction of equipment for use in explosive atmospheres.
T6
APPARATUS GROUPS AND
TEMPERATURE CLASSES FOR
COMMON EXPLOSIVE GASES
AND VAPOURS
energy in circuit and
temperature on
Intrinsic safety
Encapsulation
Non-incendive
Ex ia
Ex ib
EN 50020*
1
2
6
(EN 60079-11)
T
components reduced
to a safe level
5
T
4
IGNITION
TEMPERATURES
FOR COMMON
T
3
T
2
Gas/Vapour
Temperature
Gas
Group Class
Temperature
EN 60079-18
EN 60079-15
Ex m
flammable gas excluded
by encapsulating the
ignition source in resin
2
Potentially Explosive
e
Atmospher
The production quality stage of the conformity assessment procedures ensure continued product compliance
in manufacturing. Typically a manufacturer should have a certified ISO 9000 quality management system and
comply with one of the quality modules in the ATEX Equipment Directive, however this will vary depending on
product equipment category; equipment used in higher risk areas will require more onerous conformity
assessment procedures to be applied.
T
1
T
COMBUSTIBLE DUSTS
Acetic acid
Acetone
Acetylene
Ammonia
Benzene
IIA
IIA
IIC
IIA
IIA
IIA
IIA
IIA
T1
T1
T2
T1
T1
T2
T2
T3
T2
T2
T1
T1
T1
T1
T1
T1
T3
T1
Dust Cloud
Ignition
Temperature
Ex n
will not ignite explosive
gas in normal operation,
faults unlikely to occur
3
In addition to the 94/9/EC ATEX (Equipment) Directive, products for use in potentially explosive atmospheres
may require to be compliant with other Directives including the 89/336/EEC Electro-Magnetic Compatibility
(EMC) Directive, which became mandatory on 1/1/96. This Directive applies to virtually all electrical and
electronic apparatus potentially able to generate interfering emissions or exhibit an undue sensitivity to
interference sources.
Aluminium
Coal dust (Lignite)
Flour
Grain dust
Methyl cellulose
Phenolic resin
Polythene
PVC
590°C
380°C
490°C
510°C
420°C
530°C
420°C
700°C
810°C
460°C
490°C
Butane
Cumene
Protection concept identifies the means by which explosion protection is achieved.
* Shortly to be replaced by standard in brackets.
Cychlohexane
Ethanol (ethyl alcohol) IIA
Ethylene
IIB
IIC
IIA
IIA
IIA
IIA
IIA
IIA
IIA
Once compliance with the relevant Directives is complete and an EC Declaration of Conformity issued by the
manufacturer, the ‘CE’ mark may be applied and the product placed on the market.
0
AMBIENT TEMPERATURE
+40 C
Hydrogen
Methane (industrial)
Methanol
Petroleum
Propane
Equipment approved to the
CENELEC standard have T. class
based on use in an ambient of
-20°C to +40°C unless otherwise
stated (ie. T amb. = 35°C)
The ATEX Equipment Directive in full, and EC Commission guidance on the Directive, may be found on the
Soot
Starch
Sugar
Area Classification
Zone Criteria
CLASSIFICATION OF
HAZARDOUS AREAS
To EN 60079-10
Gases
Dusts
99/92/EC ATEX (WORKPLACE) DIRECTIVE ON MINIMUM
REQUIREMENTS FOR IMPROVING THE SAFETY AND HEALTH
PROTECTION OF WORKERS POTENTIALLY AT RISK FROM
EXPLOSIVE ATMOSPHERES.
Toulene
present continuously or for long periods
(>1000hrs per annum)
0
Turpentine
Xylene
–20 C
A more comprehensive list of dusts is
provided in BS 7535. A database of
'Combustion and Explosion
Characteristics of Dusts’ is available at
Zone 0
Hazardous areas are classified
into zones on the basis of the
frequency and duration of the
occurrence of an explosive
atmosphere. Durations on
table are typical.
Zone 20
Zone 21
Zone 22
A more comprehensive list of gases and vapours
is provided in IEC 60079-20
WORKPLACES IN OPERATION BEFORE JULY 2003 MUST
COMPLY BY JULY 2006.
WORKPLACES COMING INTO USE AFTER JULY 2003 MUST
COMPLY IMMEDIATELY.
The Directive covers both Group I and Group II activities, on shore and offshore within the EU, and aims to
provide a better level of protection for the health and safety of workers in potentially explosive gas, vapour,
mist and dust atmospheres.
Zone 1
Zone 2
likely to occur in normal operation occasionally
(>10hrs, <1000hrs per annum)
unlikely to occur in normal operation,
if it does will only be for short periods
(<10hrs per annum)
It lists a set of obligations and safety measures for employers, requiring the adoption of a coherent risk
assessment based strategy for the prevention of explosions. These obligations include:
•
Generation of an explosion protection document, evaluating explosion risk, including: likelihood of the
presence of the explosive atmosphere, the presence of ignition sources (including electrostatic discharge),
identification of the substances and processes in use, definition of specific measures taken to safeguard
the health and safety of workers.
KEY
ASSOCIATED STANDARDS
EXAMPLE OF HAZARDOUS AREA ZONES
This diagram shows how hazardous area zones may occur in typical circumstances.
Explosive Atmospheres. Explosion prevention & protection
•
•
•
•
Classification of areas into zones and marking points of entry with safety signs.
Appropriate training and supervision for workers.
Basic concepts and methodology
EN 1127-1
PETROL STATION
Explosive atmosphere
consisting of a mixture with
air of flammable substances in
the form of gas, vapour or
mist, or a cloud of
Electrical equipment for use in potentially explosive gases,
vapours and mists - associated non-concept standards
Use of written instructions and permits to work.
GARAGE
Special requirements for work equipment:-
Classification of hazardous areas
Electrical installations
Inspection and maintenance of electrical installations
Repair and overhaul of apparatus
Data for flammable gases and vapours
EN 60079-10
–
Equipment in service before 30 June 2003 may continue to be used after this date if it has been risk
assessed and the explosion protection document indicates it can be safely used.
EN 60079-14
EN 60079-17
IEC 60079-19
IEC 60079-20
combustible dust in air.
–
Equipment brought into service after 30 June 2003 must be CE marked as compliant with the
94/9/EC ATEX (Equipment) Directive.
• Due consideration of explosion protection measures, encompassing issues such as:
Electrical apparatus for use in the presence of combustible dusts
–
–
–
–
–
–
Control of releases.
Spark
Use of protective measures appropriate to the greatest potential risk.
Selection of appropriate equipment by referencing the explosion protection document.
Ensuring equipment is correctly maintained and operated.
Minimising the risk of explosion and the effect of explosion in the workplace.
Provision of suitable warning and escape facilities.
UNVENTILATED
GARAGE
Protection of enclosures “tD”
Classification of areas
Selection, installation and maintenance
Protection by encapsulation
EN 61241-1
EN 61241-10
EN 61241-14
EN 61241-18
DECANTING OF FLAMMABLE LIQUID
FROM CONTAINER
PETROL STATION FORECOURT
INSPECTION PIT
TO CONTAINER
FLAMMABLE MATERIAL
IN LIQUID FORM
Non-Electrical Equipment for use in potentially explosive gases,
vapours, mists and dusts
ZONE 0
ZONE 1
ZONE 2
FUEL STORAGE TANK
Ignition
99/92/EC is a separate directive specifically covering workers in explosive atmospheres, working
within the more general 89/391/EEC Directive on the introduction of measures to
encourage improvements in the safety and health of workers at work.
Basic method and requirements
Protection by constructional safety “c”
Protection by liquid immersion “k”
EN 13463-1
EN 13463-5
EN 13463-8
The ATEX Workplace Directive in full may be found on the following website:
Flameproof flange gap on
Ex d equipment
These standards relating to apparatus for dust and non electrical
equipment are being supplemented by further standards for specific
concepts of protection.
Ex Environment
DSEAR – THE DANGEROUS SUBSTANCES AND EXPLOSIVE
ATMOSPHERES REGULATIONS 2002.
< = less than
> = more than
Standards available from: British Standards Institution, 369 Chiswick High Road,
In the UK the 99/92/EC ATEX workplace Directive will be implemented as The Dangerous Substances and
Explosive Atmospheres Regulation 2002 (DSEAR). These regulations will also include the safety aspects of
the 98/24/EC Chemical Agents Directive, resulting in flammable and dangerous substances being covered
by a single set of regulations, thus reducing the volume of legislation covering this area.
It is the user’s responsibility to ascertain if
a
particular product is safe and without risk to health and safety by virtue of its location in
user should be thoroughly familiar with the standards mentioned in this guide.
a
hazardous area, i.e. classification of zones, gas groups, ignition temperatures, etc. Both the specifier and
A copy of the DSEAR regulations is available at:
Whilst every care has been taken in the compilation of this document, the Company regrets that it cannot accept responsibility for any errors or omissions contained herein. Readers should not rely upon the information contained in this
document without seeking specific safety advice and ensuring that their own particular circumstances are in accordance with the matters set out.
A guide to DSEAR, published by the Health and Safety Executive can be downloaded at:
©
The Wolf Safety Lamp Company Limited 2000
&
2005. Do not reproduce without prior permission from the company. MM Design Limited, Sheffield. Printed in England MM/WK/04.05/10K
SL008 ISSUE
1
For details of our full range of explosion protected lighting products visit our website listed below or contact Wolf to request data sheets.
A-TL44A
Wolflite Rechargeable Handlamp H-251A
II 2 GD EEx e ib IIC T4 IP66 T135°C
BAS00ATEX2176
Wolf Hazard Lamp HL-95
II 1 G EEx ia IIC T4
BAS99ATEX1044
Wolf Rechargeable Torch R-30
II 2 GD EEx e ib IIC T4 IP67 T135°C
Baseefa05ATEX0068
A-TL45A
Wolf ATEX Turbolite
Wolflite Primary Cell Handlamp H-4DCA
II 2 GD EEx e ib IIC T4 IP66 T135°C
BAS00ATEX2203
II 2 GD II T4 (Tamb=55°C) T135°C
SIRA02ATEX5099X
Wolf Ex-Penlite PL-01
II 2 G EEx e ia IIC T4
TÜV00ATEX1529
Wolf ‘Zone 0’ Headtorch HT-200
II 1 G EEx ia IIC T4/T3
Baseefa04ATEX0398
TR-26/TR-24/TR-24+
Wolf EX GLS Leadlamp
II 2 G EEx d e IIA T3
IBExU03ATEX1018X
Wolf Flameproof Leadlamp
II 2 G EEx d e IIC T4/T3
DMT03ATEXE279
TS-26/TS-24/TS-24+
Wolf ATEX Safety Torches
II 2 GD EEx e ib IIC T6 IP67 T65°C
II 2 GD EEx e ib IIC T4 (Tamb=40/55°C)
IP67 T95°C (Tamb=55°C)
Wolf LiteTracker™ and Bikelite
II 1 G EEx ia IIC T4
BAS02ATEX2220X
BAS99ATEX1017
Wolf Safety Lamp Company Saxon Road Works, Sheffield S8 0YA England
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