Explosive atmospheres. Part 37: Non-electrical equipment for explosive atmospheres. Non-electrical type of protection constructional safety ''c'', control of ignition sources ''b'', liquid immersion ''k'' (ISO 80079-37:2016)
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ISO 80079-37:2016 specifies the requirements for the design and construction of non-electrical equipment, intended for use in explosive atmospheres, protected by the types of protection constructional safety "c", control of ignition source "b" and liquid immersion "k". This part of ISO/IEC 80079 supplements and modifies the requirements in ISO 80079-36. Where a requirement of this standard conflicts with the requirement of ISO 80079-36 the requirement of this standard takes precedence. Types of protection "c", "k" and "b" are not applicable for Group I, EPL Ma without additional protective precautions. The types of ignition protection described in the standard can be used either on their own or in combination with each other to meet the requirements for equipment of Group I, Group II, and Group III depending on the ignition hazard assessment in ISO 80079-36. Keywords: constructional safety "c", control of ignition source "b" and liquid immersion "k"
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Sisällysluettelo
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 Determination of suitability
5 Requirements for equipment with Type of Protection constructional safety “c”
5.1 General requirements
5.2 Ingress protection
5.3 Seals for moving parts
5.4 Equipment lubricants, coolants and fluids
5.5 Vibration
5.6 Requirements for moving parts
5.7 Requirements for bearings
5.8 Requirements for power transmission systems
5.9 Requirements for clutches and variable speed couplings
5.10 Flexible couplings
5.11 Requirements for brakes and braking systems
5.12 Requirements for springs and absorbing elements
5.13 Requirements for conveyor belts
6 Requirements for equipment with Type of Protection control of ignition source “b”
6.1 General
6.2 Determination of the control parameters
6.3 Ignition prevention system design and settings
6.4 Ignition protection of sensors and actuators
6.5 Ignition protection types
7 Requirements for equipment with Type of Protection liquid immersion “k”
7.1 Determination of the maximum / minimum criteria
7.2 Protective liquid
7.3 Equipment construction
8 Type tests
8.1 Type tests for equipment with Type of Protection constructional safety “c”
8.2 Type tests for equipment with Type of Protection control of ignition source “b”
8.3 Type tests for equipment with Type of Protection liquid immersion “k”
9 Documentation
9.1 Documentation for equipment with Type of Protection constructional safety “c”
9.2 Documentation for equipment with Type of Protection control of ignition sources “”b”
9.3 Documentation for equipment with Type of Protection liquid immersion “k”
10 Marking
10.1 General
10.2 Safety devices
Annex A Approach and application: equipment with Type of Protection “c” (informative)
Annex B Test requirements (normative)
Annex C Methodology: equipment with Type of Protection “b” (informative)
Annex D Approach to assign the required ignition protection type used for equipment to achieve different EPL (informative)
Annex E Information on functional safety concept (informative)
EN 13237:2012 Potentially explosive atmospheres - Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres
EN 13501-1:2018 Fire classification of construction products and building elements - Part 1: Classification using data from reaction to fire tests
IEC 60079-0:2011
EN 13237:2012 Potentially explosive atmospheres - Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres
EN 13501-1:2018 Fire classification of construction products and building elements - Part 1: Classification using data from reaction to fire tests
IEC 60079-0:2011
IEC 60529:1989
IEC/TS 60079-32-1:2013
ISO 1813:2014 Belt drives -- V-ribbed belts, joined V-belts and V-belts including wide section belts and hexagonal belts -- Electrical conductivity of antistatic belts: Characteristics and methods of test
ISO 19353:2015 Safety of machinery -- Fire prevention and fire protection
ISO 281:2007 Rolling bearings -- Dynamic load ratings and rating life
ISO 4413:2010 Hydraulic fluid power -- General rules and safety requirements for systems and their components
ISO 4414:2010 Pneumatic fluid power -- General rules and safety requirements for systems and their components
ISO 80079-36:2016 Explosive atmospheres -- Part 36: Non-electrical equipment for explosive atmospheres -- Basic method and requirements
ISO 9563:2015 Belt drives -- Electrical conductivity of antistatic endless synchronous belts -- Characteristics and test method