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PD CLC/TR 60079-33:2015

Current
Current

The latest, up-to-date edition.

Explosive atmospheres Equipment protection by special protection \'s\'
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-31-2016

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Independent verifier
6 Design and construction
7 Application of equipment protection levels (EPL)
8 Preparation of assessment and test specification
9 Ignition hazard assessment
10 Application of special protection 's'
11 Type verification and tests
12 Routine verification and test
13 Documentation
14 Ex components
15 Marking
16 Certificate information
17 Instructions
Annex A (informative) - Explanation of the ignition
        hazard assessment procedure
Annex B (informative) - Examples of ignition hazard
        assessment
Bibliography
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications

Provides the specific methodology for the assessment and testing, and requirements for marking of electrical equipment, parts of electrical equipment and Ex components with special protection 's'.

This part of IEC60079 gives the specific methodology for the assessment and testing, and requirements for marking of electrical equipment, parts of electrical equipment and Ex components with special protection “s??. This part of IEC60079 applies to electrical equipment employing a method of protection not covered by any existing standard in the IEC60079 series, electrical equipment employing one or more recognized types of protection where the design and construction is not fully compliant with the standard for the type of protection, electrical equipment where the intended use is outside the parameters of the scope of the standard for the type of protection. This part of IEC60079 is not intended for equipment that is covered by the scope of other IEC60079 equipment standards unless it is clearly demonstrated that compliance with the type of protection is not feasible, and additional measures are applied to establish an equivalent equipment protection level. This part of IEC60079 for special protection “s?? is applicable to Group I, Group II and Group III and for equipment protection levels Ma, Mb, Ga, Gb, Gc, Da, Db and Dc, as defined in IEC60079‑0 . Certain specific guidance for assessment and testing are provided in the annexes to this standard. This standard supplements and modifies the general requirements of IEC60079‑0 . Where a requirement of this standard conflicts with a requirement of IEC60079‑0 , the requirement of this standard shall take precedence. NOTE1 This standard may be used where equipment requires a higher EPL than the underlying protection techniques provide. Additional control measures or additional design and test requirements would be applied. NOTE2 Parts of equipment that can be designed and tested to standardized techniques should be so designed. Only those parts where conformance with essential safety requirements is achieved through alternative controls should be considered for special protection “s??. Equipment similar in attributes and performance to other equipment within a particular type of protection should be reviewed first to that method of protection prior to being considered for the use of Ex ??s??’. Some parts of IEC60079 allow a degree of variance from the equipment requirements and where determined to be close enough by independent verifiers, then it is preferable to prescribe to the original type of protection.

Committee
EXL/31
DevelopmentNote
Renumbers and supersedes BS IEC 60079-33. 2015 version incorporates corrigendum to BS IEC 60079-33. (05/2015)
DocumentType
Standard
Pages
44
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
CLC/TR 60079-33:2015 Identical
IEC 60079-33:2012 Identical

EN 1127-1:2011 Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology
IEC 60079-1:2014 RLV Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"
IEC 60228:2004 Conductors of insulated cables
EN 61508-1:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements
EN 60079-29-1:2016 Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of detectors for flammable gases
EN 60079-0:2012/A11:2013 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS (IEC 60079-0:2011, MODIFIED)
IEC 60079-29-3:2014 Explosive atmospheres - Part 29-3: Gas detectors - Guidance on functional safety of fixed gas detection systems
EN 13463-1:2009 Non-electrical equipment for use in potentially explosive atmospheres - Part 1: Basic method and requirements
IEC/ISO 31010:2009 Risk management - Risk assessment techniques
IEC 60079-18:2014 RLV Explosive atmospheres - Part 18: Equipment protection by encapsulation “m”
EN 15268:2008 Petrol filling stations - Safety requirements for the construction of submersible pump assemblies
IEC 60079-10-1:2015 Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres
EN 50050:2006 Electrical apparatus for potentially explosive atmospheres - Electrostatic hand-held spraying equipment
EN 13463-6:2005 Non-electrical equipment for use in potentially explosive atmospheres - Part 6: Protection by control of ignition source 'b'
ISO 281:2007 Rolling bearings Dynamic load ratings and rating life
UL 79:10ED 2016-04 Power-Operated Pumps for Petroleum Dispensing Products
IEC 60079-11:2011 Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
EN 15198:2007 Methodology for the risk assessment of non-electrical equipment and components for intended use in potentially explosive atmospheres
IEC 60079-29-2:2015 RLV Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
EN 62061:2005/A2:2015 SAFETY OF MACHINERY - FUNCTIONAL SAFETY OF SAFETY-RELATED ELECTRICAL, ELECTRONIC AND PROGRAMMABLE ELECTRONIC CONTROL SYSTEMS (IEC 62061:2005/A2:2015)
ISO 13849-2:2012 Safety of machinery — Safety-related parts of control systems — Part 2: Validation
IEC 60079-0:2011 Explosive atmospheres - Part 0: Equipment - General requirements
IEC 60079-14:2013 Explosive atmospheres - Part 14: Electrical installations design, selection and erection
EN ISO 13849-2:2012 Safety of machinery - Safety-related parts of control systems - Part 2: Validation (ISO 13849-2:2012)
EN ISO 13849-1:2015 Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design (ISO 13849-1:2015)
IEC 61508-1:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements (see Functional Safety and IEC 61508)
IEC 62061:2005+AMD1:2012+AMD2:2015 CSV Safety of machinery - Functional safety of safety-related electrical, electronic and programmable electronic control systems
EN 60079-29-2:2015 Explosive atmospheres - Part 29-2: Gas detectors - Selection, installation, use and maintenance of detectors for flammable gases and oxygen
EN 50495:2010 Safety devices required for the safe functioning of equipment with respect to explosion risks
ISO 13849-1:2015 Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design
IEC 60079-15:2010 Explosive atmospheres - Part 15: Equipment protection by type of protection "n"
IEC 60079-26:2014 RLV Explosive atmospheres - Part 26: Equipment with Equipment Protection Level (EPL) Ga

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