A.4 Typical vapour barrier arrangements
A.4.4 Vertical vapour barrier Type 2
Dimensions in millimetres
Key
2 non hazardous area Zone 1: category 2 equipment Zone 2: category 3 equipment
Figure A.4 — Vertical vapour barrier Type 2
200 mm ≥ d ≥ 50 mm
Dimensions in millimetres
Key
2 non hazardous area Zone 1: category 2 equipment Zone 2: category 3 equipment
Figure A.5 — Vertical vapour barrier Type 2
d > 200 mm
Dimensions in millimetres
Key
2 non hazardous area Zone 1: category 2 equipment Zone 2: category 3 equipment
Figure A.6 — Vertical vapour barrier Type 2
Annex B (informative)
Information on explosion protected equipment
The standard EN 1127-1 specifies methods for the identification of hazardous situations that may lead to an explosion. It details the design and construction measures to achieve the required safety. It includes the relationship between categories and zones and the applicable equipment in the different zones.
Information on the control and classification of hazardous places for gases and vapours by the use of ventilation is given in EN 60079-10-1.
Equipment should be in conformity with the requirements for categories as defined in EN 1127-1.
Table B.1 — Standard protection concepts applicable
Protection technique Symbol Standard Zone
0 1 2
Intrinsic safety ia EN 60079-11 A A A
Intrinsic safety ib EN 60079-11 – A A
Flameproof d EN 60079-1 – A A
Increased safety e EN 60079-7 – A A
Oil immersion o EN 60079-6 – A A
Pressurised apparatus p EN 60079-2 – A A
Powder filling q EN 60079-5 – A A
Encapsulation m EN 60079-18 – A A
Non sparking n EN 60079-15 – – A
Intrinsically safe electrical systems i EN 60079-25 A A A Equipment protection level (EPL) Ga – EN 60079-26 A – –
General requirements – EN 60079-0 A A A
A = applicable
Annex C (informative)
Environmental aspects
C.1 Materials should be selected to optimize product durability and lifetime and consideration should be made to avoiding the selection of rare or hazardous materials.
C.2 Consideration should be made to using recycled or re-used materials, and to the selection of materials which can then be subsequently recycled.
C.3 The possibility of marking components to aid to their sorting for disposal/recycling at end of life should also be reviewed.
C.4 Packaging design should consider using recycled materials, and materials that need little energy for their manufacture, and should minimize waste.
C.5 Packaging design should consider subsequent re-use and recycling.
C.6 The size and weight of packaging should be minimized whilst protecting the products to minimize waste through damage. Packaging should be designed to optimize capacity of transportation vehicles whilst facilitating safe loading and unloading.
C.7 Test fluids should be used and disposed of in accordance with manufacturer’s instructions.
C.8 Consideration should be made to reducing the volume of water required for production operations, for example washing and cooling processes. The output water should be of a quality to meet normal drainage requirements.
C.9 Maximum use should be made of high efficiency motors, lighting and displays.
C.10 Within the European Union petrol vapour recovery is not mandatory for all petrol filling stations. For those dispensers manufactured without vapour recovery systems consideration should be made to facilitating the retrofit of vapour recovery systems should the need arise due to local regulations.
C.11 The design should facilitate the manufacturing of the product and packaging using tools which minimize the generation of noise and vibration.
C.12 Components intended to move in normal use, for example motors and pumping units, should be selected and mounted to minimise noise and vibration.
Environmental checklist
Environmental Issue Stages of the life cycle All stages Acquisition Production Use End-of-Life
Raw materials and energy Pre-manu- factured materials & components Production Packaging Use Maintenance and repair Use of additional products Reuse/ Material and Energy Recovery Incineration without energy recovery Final disposal Transportation
Inputs
Materials C.1, C.2 C.1, C.2 C.5 C.2, C.3
C.5
C.2, C.3 C.5
C.2, C.3 C.5
Water C.8
Energy C.4 C.9 C.6
Land
Outputs
Emissions
to air C.7 C.10
Discharges
to water C.8
Discharges to soil
Waste C.4 C.2, C.3
C.5, C.6 Noise,
vibration, radiation, heat
C.11 C.11 C.12
Other relevant aspects
Risk to the environ- ment from accidents or uninten- ded use
See comment
below
7.3
Customer
information 7.2, 7.3
Comments:
These risks are reduced by using nozzles in accordance with EN 13012, safe breaks in accordance with EN 13617-2, and shear valves in accordance with EN 13617-3.
NOTE 1 The stage of packaging refers to the primary packaging of the manufactured product. Secondary or tertiary packaging for transportation, occurring at some or all stages of the life cycle, is included in the stage of transportation.
NOTE 2 Transportation can be dealt with as being a part of all stages (see checklist) or as separate sub-stage. To accommodate specific issues relating to product transportation and packaging, new columns can be included and/or comments can be added.
Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC
This European Standard has been prepared under a mandate given to CEN by the European Commissionand the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 94/9/EC.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative Clauses of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations.
Table ZA.1 — Essential requirements of Directive 94/9/EC Equipment and protective systems intended for use in potentially explosive atmospheres — Annex II
Essential requirement of Directive 94/9/EC
Subject Relevant clause(s)
in this European Standard 1.0.1 Principles of integrated explosion safety 5.1, 5.2 1.0.3 Special checking and maintenance conditions 7.3
1.04 Surrounding area conditions 5.2
1.0.5 Marking 7.4
1.0.6 (a) All equipment must be accompanied by instructions 7.2 1.0.6 (b) The instructions must be drawn up in one of the Community
languages 7.2
1.0.6 (c) The instructions must contain the drawings and diagrams for the putting into service
7.3
1.1.1 Materials must not trigger off an explosion 5.3.2.1, 5.3.3.1 1.1.3 No reduction in protection due to corrosion, wear, etc. 5.3.3.2
1.2.1 Regard to technological knowledge 5.2
1.2.2 Intended purpose 5.3.1.1.2
1.2.3 Enclosed structures and prevention of leaks 5.3.4
1.2.5 Additional means of protection 5.3.6
1.2.6 Safe opening 5.3.6.2
1.2.7 (a) Physical injury or other harm 5.3.2.5
1.2.9 Flameproof enclosure systems 5.3.5
1.3.1 Hazards arising from different ignition sources 5.1
1.3.2 Hazards arising from static electricity 5.3.3.4, 5.3.4.1 1.3.3 Hazards arising from stray electric and leakage currents 5.3.2.5
1.3.4 Hazards arising from overheating 5.1.2
1.4.1 Safety in presence of voltages humidity vibration etc. 5.3.1.6
1.4.2 Mechanical and thermal stress, aggressive substances 5.3.1.5, 5.3.1.6
Table ZA.1 (continued) Essential
requirement of Directive 94/9/EC
Qualifying remarks/Notes Relevant clause(s) in this European Standard 1.5.1 Detection of failure of safety devices – fail safe 5.3.1.2 1.5.2 System security in the event of safety device failure 5.3.4.2
1.5.3 Emergency stop controls 5.3.1.2
1.5.4 Control and display units 5.3.1.2
1.5.8 Risks arising from software 5.3.1.2
1.6.2 Actuation of emergency shutdown 5.3.2.5.2
2.2.1.1 No sources of ignition in event of operating faults 5.3.2.1, 5.3.2.5.2, 5.3.3.1, 5.3.3.4 2.3.1.1 Equipment must be so designed and constructed as to prevent
foreseeable ignition sources 5.3.2.1,
5.3.3.1 2.3.1.2 Surface temperatures must not exceed the stated maximum
surface temperatures
5.1.2
WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard.
Annex ZB (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide one means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standard in at least one Member State, compliance with the normative clauses of this standard (except 5.1, 5.2; 5.3.1.1.2, 5.3.1.7, 5.3.2.1, 5.3.2.4, 5.3.2.5.2, 5.3.3.1, 5.3.3.4, 5.3.5, 5.3.7, 6.1.4, 6.1.6, the last row of Table 3, and Annex A) confers, within the limits of the scope of this standard, a presumption of conformity with the relevant Essential Requirements (except 1.7.4.2 u)) of that Directive and associated EFTA regulations.
WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard.
Bibliography
[1] EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and heating applications
[2] EN 1127-1, Explosive atmospheres — Explosion prevention and protection – Part 1: Basic concepts and methodology
[3] EN 13617-3, Petrol filling stations — Part 3: Safety requirements for construction and performance of shear valves
[4] CLC/TR 50404, Electrostatics — Code of practice for the avoidance of hazards due to static electricity
[5] EN 60079-2, Explosive atmospheres — Part 2: Equipment protection by pressurized enclosures ''p'' (IEC 60079-2)
[6] EN 60079-5, Explosive atmospheres — Part 5: Equipment protection by powder filling "q"
(IEC 60079-5)
[7] EN 60079-6, Explosive atmospheres — Part 6: Equipment protection by oil immersion "o"
(IEC 60079-6)
[8] EN 60079-11, Explosive atmospheres — Part 11: Equipment protection by intrinsic safety "i"
(IEC 60079-11)
[9] EN 60079-15, Explosive atmospheres — Part 15: Equipment protection by type of protection "n"
(IEC 60079-15)
[10] EN 60079-18, Explosive atmospheres — Part 18: Equipment protection by encapsulation "m"
(IEC 60079-18)
[11] EN 60079-25, Explosive atmospheres — Part 25: Intrinsically safe electrical systems (IEC 60079-25)
[12] EN 60079-26, Explosive atmospheres — Part 26: Equipment with equipment protection level (EPL) Ga (IEC 60079-26)
[13] ISO 9329-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Unalloyed steels with specified room temperature properties
[14] ISO 9329-2, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 2: Unalloyed and alloyed steels with specified elevated temperature properties
[15] ISO 9329-3, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 3: Unalloyed and alloyed steels with specified low temperature properties
[16] ISO 9329-4, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 4: Austenitic stainless steels