Wolf H-251AII specifications ATEX Explained, Ex Equipment, Ex Environment

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

	1180			II	2	GD
		Number of
CE mark denotes
manufacturers’		Notified Body	Specific	Equipment		Defines suitability
declaration		responsible for
			mark for	Group		of use of Group II
of product		EC monitoring
			Explosion			equipment in gas
compliance to		of production
			Protection		Equipment	and/or dust
all relevant EU		quality
					Category
Directives						atmospheres

	CERTIFICATION CODE
	gases, vapours and mists to EN 50014
	E Ex	e ib	IIC		T4
Explosion Protected equipment
‘E’ prefix denotes compliance		Protection Gas Group			Temperature
with CENELEC Standards in
the EN50014 series		Concepts		Classification
Note: ‘EEx’ and Protection Concepts are not marked if a ‘Technical File’
from first principles is applied.
EQUIPMENT GROUP & EQUIPMENT CATEGORY
Equipment	Equipment	Protection	Hazard		Use
Group	Category	Level	Gas	Dust
I	M1	Very high	–	–	Operable in Ex
		protection			atmosphere
Mining	M2	High	–	–	De-energised
		protection			in Ex atmosphere
II	1	Very high	G		Zones 0,1,2,
		protection
				D	Zones 20,21,22
	2	High	G		Zones 1,2
		protection
				D	Zones 21,22
Industrial	3	Normal	G		Zones 2
		protection
				D	Zones 22

Equipment Group and Category identify the areas in which equipment may be safely used

Ex EQUIPMENT LABEL

EC-TYPE EXAMINATION CERTIFICATE NUMBER

WOLFLITE HANDLAMP H-251A

Notified body

MARKING FOR DUST

responsible for

BAS

00

ATEX

2176

Serial

ATEX MARKING

EC-Type

Number

II 2 GD

IGNITION PROTECTION

Examination

EEx e ib IIC T4

(Test House)

Year Certificate Issued

ATEX Certificate

IP66 T135oC

CERTIFICATION CODE

BAS 00 ATEX 2176

Explosion protection mark (ATEX marking)

Battery 4V, 5Ah

3.6 min. 1.0A max.

X Suffix denotes special conditions of certification

gases, vapours & mists

type H-66 ONLY

HPR 3.75V min. 0.75A max.

EC-TYPE EXAMINATION

U Suffix denotes Ex component approval

CERTIFICATE NUMBER

Do not open or charge in Ex areas.

Charge in charger unit C-251 HV/LV ONLY.

EC NOTIFIED BODIES

Replacement parts specification

Recharge battery immediately after use.

MARKING FOR DUST

Ne pas charger ni ouvrir l’appareil en zones Ex.

1180

Ne recharger que sur des chargeur C-251 HV/LV.

CE mark (ATEX marking)

IGNITION PROTECTION

Notified Bodies have been appointed by the governments of individual EC

Recharger immediatement les batteries dechargees.

Safety measures to be applied in service

Gerat nicht im Ex-Bereich laden oder öffnen.

to EN 50281-1-1

countries as responsible to carry out part or all of the functions specified in

Serial/batch number

Nur mit Ladegerät typ C-251 HV/LV aufladen.

Supplementary approval

the ATEX Equipment Directive, such as EC type examination of equipment

Nach Gebrauch sofort wieder aufladen.

Lloyds Register of Shipping

and quality assurance assessment of equipment production.

incorporating year of construction

IP66

T135°C

Batch No.

marine approval

The Wolf Safety Lamp Company Ltd.

Baseefa (2001) Ltd are responsible for the quality assurance assessment of

Sheffield - S8 0YA - England

equipment manufactured by the Wolf Safety Lamp Company, this is identified

by their notified body number (1180) appearing below the CE mark on

Ingress

Maximum External

Wolf products.

Protection Code

Surface Temperature

GAS GROUP

Group

Typical Hazard

Maximum Safe

Maximum Safe Gap

Applicable

GROUP II GAS SUBDIVISION

Explosion

Sparking Energy

Flameproof Ex d

Concepts

INGRESS PROTECTION (IP) CODE to EN 60529

Protected

Intrinsic Safety Ex ia/ib

of ignition

Equipment

Ex equipment selection for use in gases, vapours, mists or dusts must take into consideration

Risk

I

Methane

✓

✓ all concepts

the environmental conditions of the area in which it is to be used. Apparatus resistance to

more

wide

IIA

ingress of both solid bodies and water is identified by use of an “IP rating”.

Mining

energyrequired igniteto gas

✓

flameproof gapsize

✓ Ex d, Ex ia/ib

IIB

Ethylene

IIC

1st Numeral

2nd Numeral

IIA

Propane

✓

✓

IIB

Protection Against Solid Bodies

Protection Against Water

less

✓

narrow

✓

no protection

0

0

no protection

II

> 50mm

1

1

IIC

Hydrogen/Acetylene

90°

Industrial

Ex e, Ex m, Ex p,

> 12.5mm

II

All Gases

IIB

IIC

15°

Ex o, Ex q, Ex n

IIA

Potentially

2

2

Explosive

> 2.5mm

Equipment sub-grouping segregates gases according to ease of ignitability by sparks or flames. These apply to flameproof Ex d and

Atmosphere

60°

intrinsically safe Ex ia/ib equipment only.

3 3

‘CE’ MARKING AND THE 94/9/EC ATEX DIRECTIVE ON EQUIPMENT AND PROTECTIVE SYSTEMS INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES.

PROTECTION CONCEPTS FOR ELECTRICAL APPARATUS TEMPERATURE CLASS

> 1mm

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.

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.

The Explosive Atmospheres 94/9/EC ATEX (Equipment) Directive became mandatory on 1 July 2003.

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.

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.

Compliance of products to the ATEX Equipment Directive, through conformity assessment, takes a modular approach, and is generally in two stages; design and production.

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

Concept	Symbol	Icon	Description	Category	EN Standard
General req.	–		General requirements	–	EN 60079-0
Oil immersion	Ex o		explosive gas excluded	2	EN 50015*
			by immersing ignition		(EN 60079-6)
			source in oil
Pressurised	Ex p		explosive gas excluded	2	EN 60079-2
			by surrounding ignition
			source with pressurised
			inert gas
Powder filled	Ex q		explosive gas excluded	2	EN 50017*
			by immersing ignition		(EN 60079-5)
			source in sand
Flameproof	Ex d		ignition within the apparatus	2	EN 60079-1
			enclosure is contained and
			will not ignite surrounding
			explosive atmosphere
Increased	Ex e		design excludes	2	EN 60079-7
safety			the possibility of
			incendive arcs, sparks

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.

Hot surfaces can ignite explosive atmospheres			Explosion Protected
			Equipment
Risk	of	ignition
			T1
450°C			T2
300°C			T3
200°C			T4
135°C			T5
			T6

4	4
	360°
5	5
6	6
	7
1st numeral and 2nd numeral
combined to identify level of
ingress protection, e.g. dust tight,	8
protected from high power water
jets/heavy seas:–
Ingress Protection rating: I P 6	6

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.

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.

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

		or hot surfaces
Intrinsic safety	Ex ia	energy in circuit and	1	EN 50020*
		temperature on
				(EN 60079-11)
	Ex ib	components reduced	2
		to a safe level
Encapsulation	Ex m	flammable gas excluded	2	EN 60079-18
		by encapsulating the
		ignition source in resin
Non-incendive	Ex n	will not ignite explosive	3	EN 60079-15
		gas in normal operation,
		faults unlikely to occur

100°C
85°C				T6
				T5
			T3	T4
		T2		Explosive
	T1			Potentially
				Atmosphere

APPARATUS GROUPS AND

TEMPERATURE CLASSES FOR COMMON EXPLOSIVE GASES AND VAPOURS

Gas/Vapour	Gas	Temperature
Temperature	Group	Class
Acetic acid	IIA	T1
Acetone	IIA	T1
Acetylene	IIC	T2
Ammonia	IIA	T1
Benzene	IIA	T1
Butane	IIA	T2
Cumene	IIA	T2

IGNITION

TEMPERATURES

FOR COMMON

COMBUSTIBLE DUSTS

Dust Cloud	Ignition
	Temperature
Aluminium	590°C
Coal dust (Lignite)	380°C
Flour	490°C

interference sources.

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.

The ATEX Equipment Directive in full, and EC Commission guidance on the Directive, may be found on the following website: http://europa.eu.int/comm/enterprise/atex/index.htm

99/92/EC ATEX (WORKPLACE) DIRECTIVE ON MINIMUM REQUIREMENTS FOR IMPROVING THE SAFETY AND HEALTH PROTECTION OF WORKERS POTENTIALLY AT RISK FROM EXPLOSIVE ATMOSPHERES.

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.

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:

Protection concept identifies the means by which explosion protection is achieved. * Shortly to be replaced by standard in brackets.

				AMBIENT TEMPERATURE	+400C
				Equipment approved to the
Area Classification		Zone Criteria	CLASSIFICATION OF	CENELEC standard have T. class
				based on use in an ambient of
			HAZARDOUS AREAS
Gases	Dusts			-20°C to +40°C unless otherwise
		present continuously or for long periods	To EN 60079-10	stated (ie. T amb. = 35°C)	–200C
Zone 0
			Hazardous areas are classified
		(>1000hrs per annum)
	Zone 20		into zones on the basis of the
			frequency and duration of the
Zone 1		likely to occur in normal operation occasionally	occurrence of an explosive
			atmosphere. Durations on
		(>10hrs, <1000hrs per annum)
	Zone 21		table are typical.
Zone 2		unlikely to occur in normal operation,
	Zone 22	if it does will only be for short periods
		(<10hrs per

Cychlohexane	IIA	T3
Ethanol (ethyl alcohol)	IIA	T2
Ethylene	IIB	T2
Hydrogen	IIC	T1
Methane (industrial)	IIA	T1
Methanol	IIA	T1
Petroleum	IIA	T1
Propane	IIA	T1
Toulene	IIA	T1
Turpentine	IIA	T3
Xylene	IIA	T1

A more comprehensive list of gases and vapours is provided in IEC 60079-20

Grain dust	510°C
Methyl cellulose	420°C
Phenolic resin	530°C
Polythene	420°C
PVC	700°C
Soot	810°C
Starch	460°C
Sugar	490°C

A more comprehensive list of dusts is provided in BS 7535. A database of 'Combustion and Explosion Characteristics of Dusts’ is available at www.hvbg.

•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.

•Classification of areas into zones and marking points of entry with safety signs.

•Appropriate training and supervision for workers.

• Use of written instructions and permits to work.

•Special requirements for work equipment:-

–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.

–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:

–Control of releases.

–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.

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.

The ATEX Workplace Directive in full may be found on the following website:

http://europa.eu.int/comm/enterprise/atex/index.htm

DSEAR – THE DANGEROUS SUBSTANCES AND EXPLOSIVE ATMOSPHERES REGULATIONS 2002.

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.

A copy of the DSEAR regulations is available at:

http://www.hmso.gov.uk/si/si2002/20022776.htm

A guide to DSEAR, published by the Health and Safety Executive can be downloaded at: http://www.hse.gov.uk/fireandexplosion/dsear/htm

EXAMPLE OF HAZARDOUS AREA ZONES

This diagram shows how hazardous area zones may occur in typical circumstances.

PETROL STATION

			GARAGE
			UNVENTILATED
DECANTING OF FLAMMABLE LIQUID	PETROL STATION FORECOURT		GARAGE
			INSPECTION PIT
FROM CONTAINER
TO CONTAINER
FUEL STORAGE TANK	FLAMMABLE MATERIAL	ZONE 0	ZONE 1	ZONE 2
	IN LIQUID FORM

Ex Environment

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 a hazardous area, i.e. classification of zones, gas groups, ignition temperatures, etc. Both the specifier and user should be thoroughly familiar with the standards mentioned in this guide.

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.

© 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

KEY

Explosive atmosphere

consisting of a mixture with

air of flammable substances in

the form of gas, vapour or

mist, or a cloud of

combustible dust in air.

Spark

Ignition

Flameproof flange gap on

Ex d equipment

<= less than

>= more than

ASSOCIATED STANDARDS

Explosive Atmospheres. Explosion prevention & protection

Basic concepts and methodology EN 1127-1

Electrical equipment for use in potentially explosive gases, vapours and mists - associated non-concept standards

Classification of hazardous areas	EN 60079-10
Electrical installations	EN 60079-14
Inspection and maintenance of electrical installations	EN 60079-17
Repair and overhaul of apparatus	IEC 60079-19
Data for flammable gases and vapours	IEC 60079-20

Electrical apparatus for use in the presence of combustible dusts

Protection of enclosures “tD”	EN 61241-1
Classification of areas	EN 61241-10
Selection, installation and maintenance	EN 61241-14
Protection by encapsulation	EN 61241-18

Non-Electrical Equipment for use in potentially explosive gases, vapours, mists and dusts

Basic method and requirements	EN 13463-1
Protection by constructional safety “c”	EN 13463-5
Protection by liquid immersion “k”	EN 13463-8

These standards relating to apparatus for dust and non electrical equipment are being supplemented by further standards for specific concepts of protection.

Standards available from: British Standards Institution, 369 Chiswick High Road, London W4 4AL www.bsi-global.com

A-TL44A

A-TL45A

Wolf EX GLS Leadlamp

II 2 G EEx d e IIA T3

IBExU03ATEX1018X

For details of our full range of explosion protected lighting products visit our website listed below or contact Wolf to request data sheets.

		Wolflite Rechargeable Handlamp H-251A		Wolf Hazard Lamp HL-95
		II 2 GD EEx e ib IIC T4 IP66 T135°C	Wolf Rechargeable Torch R-30	II 1 G EEx ia IIC T4
		BAS00ATEX2176		BAS99ATEX1044
			II 2 GD EEx e ib IIC T4 IP67 T135°C
			Baseefa05ATEX0068
Wolf ATEX Turbolite		Wolflite Primary Cell Handlamp H-4DCA
II 2 GD II T4 (Tamb=55°C) T135°C		II 2 GD EEx e ib IIC T4 IP66 T135°C
SIRA02ATEX5099X		BAS00ATEX2203
		Wolf Ex-Penlite PL-01	Wolf ‘Zone 0’ Headtorch HT-200
TR-26/TR-24/TR-24+		II 2 G EEx e ia IIC T4	II 1 G EEx ia IIC T4/T3
TS-26/TS-24/TS-24+	Wolf ATEX Safety Torches	TÜV00ATEX1529	Baseefa04ATEX0398	Wolf Flameproof Leadlamp
				II 2 G EEx d e IIC T4/T3
	II 2 GD EEx e ib IIC T6 IP67 T65°C
				DMT03ATEXE279
	II 2 GD EEx e ib IIC T4 (Tamb=40/55°C)
		Wolf LiteTracker™ and Bikelite

IP67 T95°C (Tamb=55°C)	II 1 G EEx ia IIC T4
BAS02ATEX2220X	BAS99ATEX1017

Wolf Safety Lamp Company Saxon Road Works, Sheffield S8 0YA England

tel: 0114 255 1051 fax: 0114 255 7988 e-mail:info@wolf-safety.co.uk web: www.wolf–safety.co.uk